From 58277f502f429baee11725ca2d8cb3c43c7a6429 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 12 Aug 2020 08:30:06 -0300 Subject: perf trace beauty: Add script to autogenerate socket families table To use with 'perf trace', to convert the protocol families to strings, e.g: $ tools/perf/trace/beauty/socket.sh static const char *socket_families[] = { [0] = "UNSPEC", [1] = "LOCAL", [2] = "INET", [3] = "AX25", [4] = "IPX", [5] = "APPLETALK", [6] = "NETROM", [7] = "BRIDGE", [8] = "ATMPVC", [9] = "X25", [10] = "INET6", [11] = "ROSE", [12] = "DECnet", [13] = "NETBEUI", [14] = "SECURITY", [15] = "KEY", [16] = "NETLINK", [17] = "PACKET", [18] = "ASH", [19] = "ECONET", [20] = "ATMSVC", [21] = "RDS", [22] = "SNA", [23] = "IRDA", [24] = "PPPOX", [25] = "WANPIPE", [26] = "LLC", [27] = "IB", [28] = "MPLS", [29] = "CAN", [30] = "TIPC", [31] = "BLUETOOTH", [32] = "IUCV", [33] = "RXRPC", [34] = "ISDN", [35] = "PHONET", [36] = "IEEE802154", [37] = "CAIF", [38] = "ALG", [39] = "NFC", [40] = "VSOCK", [41] = "KCM", [42] = "QIPCRTR", [43] = "SMC", [44] = "XDP", }; $ This uses a copy of include/linux/socket.h that is kept in a directory to be used just for these table generation scripts and for checking if the kernel has a new file that maybe gets something new for these tables. This allows us to: - Avoid accessing files outside tools/, in the kernel sources, that may be changed in unexpected ways and thus break these scripts. - Notice when those files change and thus check if the changes don't break those scripts, update them to automatically get the new definitions, a new socket family, for instance. - Not add then to the tools/include/ where it may end up used while building the tools and end up requiring dragging yet more stuff from the kernel or plain break the build in some of the myriad environments where perf may be built. This will replace the previous static array in tools/perf/ that was dated and was already missing the AF_KCM, AF_QIPCRTR, AF_SMC and AF_XDP families. The next cset will wire this up to the perf build process. At some point this must be made into a library to be used in places such as libtraceevent, bpftrace, etc. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Cc: Steven Rostedt Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/trace/beauty/include/linux/socket.h | 442 +++++++++++++++++++++++++ tools/perf/trace/beauty/socket.sh | 24 ++ 2 files changed, 466 insertions(+) create mode 100644 tools/perf/trace/beauty/include/linux/socket.h create mode 100755 tools/perf/trace/beauty/socket.sh (limited to 'tools') diff --git a/tools/perf/trace/beauty/include/linux/socket.h b/tools/perf/trace/beauty/include/linux/socket.h new file mode 100644 index 000000000000..e9cb30d8cbfb --- /dev/null +++ b/tools/perf/trace/beauty/include/linux/socket.h @@ -0,0 +1,442 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _LINUX_SOCKET_H +#define _LINUX_SOCKET_H + + +#include /* arch-dependent defines */ +#include /* the SIOCxxx I/O controls */ +#include /* iovec support */ +#include /* pid_t */ +#include /* __user */ +#include + +struct file; +struct pid; +struct cred; +struct socket; + +#define __sockaddr_check_size(size) \ + BUILD_BUG_ON(((size) > sizeof(struct __kernel_sockaddr_storage))) + +#ifdef CONFIG_PROC_FS +struct seq_file; +extern void socket_seq_show(struct seq_file *seq); +#endif + +typedef __kernel_sa_family_t sa_family_t; + +/* + * 1003.1g requires sa_family_t and that sa_data is char. + */ + +struct sockaddr { + sa_family_t sa_family; /* address family, AF_xxx */ + char sa_data[14]; /* 14 bytes of protocol address */ +}; + +struct linger { + int l_onoff; /* Linger active */ + int l_linger; /* How long to linger for */ +}; + +#define sockaddr_storage __kernel_sockaddr_storage + +/* + * As we do 4.4BSD message passing we use a 4.4BSD message passing + * system, not 4.3. Thus msg_accrights(len) are now missing. They + * belong in an obscure libc emulation or the bin. + */ + +struct msghdr { + void *msg_name; /* ptr to socket address structure */ + int msg_namelen; /* size of socket address structure */ + struct iov_iter msg_iter; /* data */ + + /* + * Ancillary data. msg_control_user is the user buffer used for the + * recv* side when msg_control_is_user is set, msg_control is the kernel + * buffer used for all other cases. + */ + union { + void *msg_control; + void __user *msg_control_user; + }; + bool msg_control_is_user : 1; + __kernel_size_t msg_controllen; /* ancillary data buffer length */ + unsigned int msg_flags; /* flags on received message */ + struct kiocb *msg_iocb; /* ptr to iocb for async requests */ +}; + +struct user_msghdr { + void __user *msg_name; /* ptr to socket address structure */ + int msg_namelen; /* size of socket address structure */ + struct iovec __user *msg_iov; /* scatter/gather array */ + __kernel_size_t msg_iovlen; /* # elements in msg_iov */ + void __user *msg_control; /* ancillary data */ + __kernel_size_t msg_controllen; /* ancillary data buffer length */ + unsigned int msg_flags; /* flags on received message */ +}; + +/* For recvmmsg/sendmmsg */ +struct mmsghdr { + struct user_msghdr msg_hdr; + unsigned int msg_len; +}; + +/* + * POSIX 1003.1g - ancillary data object information + * Ancillary data consits of a sequence of pairs of + * (cmsghdr, cmsg_data[]) + */ + +struct cmsghdr { + __kernel_size_t cmsg_len; /* data byte count, including hdr */ + int cmsg_level; /* originating protocol */ + int cmsg_type; /* protocol-specific type */ +}; + +/* + * Ancillary data object information MACROS + * Table 5-14 of POSIX 1003.1g + */ + +#define __CMSG_NXTHDR(ctl, len, cmsg) __cmsg_nxthdr((ctl),(len),(cmsg)) +#define CMSG_NXTHDR(mhdr, cmsg) cmsg_nxthdr((mhdr), (cmsg)) + +#define CMSG_ALIGN(len) ( ((len)+sizeof(long)-1) & ~(sizeof(long)-1) ) + +#define CMSG_DATA(cmsg) \ + ((void *)(cmsg) + sizeof(struct cmsghdr)) +#define CMSG_USER_DATA(cmsg) \ + ((void __user *)(cmsg) + sizeof(struct cmsghdr)) +#define CMSG_SPACE(len) (sizeof(struct cmsghdr) + CMSG_ALIGN(len)) +#define CMSG_LEN(len) (sizeof(struct cmsghdr) + (len)) + +#define __CMSG_FIRSTHDR(ctl,len) ((len) >= sizeof(struct cmsghdr) ? \ + (struct cmsghdr *)(ctl) : \ + (struct cmsghdr *)NULL) +#define CMSG_FIRSTHDR(msg) __CMSG_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen) +#define CMSG_OK(mhdr, cmsg) ((cmsg)->cmsg_len >= sizeof(struct cmsghdr) && \ + (cmsg)->cmsg_len <= (unsigned long) \ + ((mhdr)->msg_controllen - \ + ((char *)(cmsg) - (char *)(mhdr)->msg_control))) +#define for_each_cmsghdr(cmsg, msg) \ + for (cmsg = CMSG_FIRSTHDR(msg); \ + cmsg; \ + cmsg = CMSG_NXTHDR(msg, cmsg)) + +/* + * Get the next cmsg header + * + * PLEASE, do not touch this function. If you think, that it is + * incorrect, grep kernel sources and think about consequences + * before trying to improve it. + * + * Now it always returns valid, not truncated ancillary object + * HEADER. But caller still MUST check, that cmsg->cmsg_len is + * inside range, given by msg->msg_controllen before using + * ancillary object DATA. --ANK (980731) + */ + +static inline struct cmsghdr * __cmsg_nxthdr(void *__ctl, __kernel_size_t __size, + struct cmsghdr *__cmsg) +{ + struct cmsghdr * __ptr; + + __ptr = (struct cmsghdr*)(((unsigned char *) __cmsg) + CMSG_ALIGN(__cmsg->cmsg_len)); + if ((unsigned long)((char*)(__ptr+1) - (char *) __ctl) > __size) + return (struct cmsghdr *)0; + + return __ptr; +} + +static inline struct cmsghdr * cmsg_nxthdr (struct msghdr *__msg, struct cmsghdr *__cmsg) +{ + return __cmsg_nxthdr(__msg->msg_control, __msg->msg_controllen, __cmsg); +} + +static inline size_t msg_data_left(struct msghdr *msg) +{ + return iov_iter_count(&msg->msg_iter); +} + +/* "Socket"-level control message types: */ + +#define SCM_RIGHTS 0x01 /* rw: access rights (array of int) */ +#define SCM_CREDENTIALS 0x02 /* rw: struct ucred */ +#define SCM_SECURITY 0x03 /* rw: security label */ + +struct ucred { + __u32 pid; + __u32 uid; + __u32 gid; +}; + +/* Supported address families. */ +#define AF_UNSPEC 0 +#define AF_UNIX 1 /* Unix domain sockets */ +#define AF_LOCAL 1 /* POSIX name for AF_UNIX */ +#define AF_INET 2 /* Internet IP Protocol */ +#define AF_AX25 3 /* Amateur Radio AX.25 */ +#define AF_IPX 4 /* Novell IPX */ +#define AF_APPLETALK 5 /* AppleTalk DDP */ +#define AF_NETROM 6 /* Amateur Radio NET/ROM */ +#define AF_BRIDGE 7 /* Multiprotocol bridge */ +#define AF_ATMPVC 8 /* ATM PVCs */ +#define AF_X25 9 /* Reserved for X.25 project */ +#define AF_INET6 10 /* IP version 6 */ +#define AF_ROSE 11 /* Amateur Radio X.25 PLP */ +#define AF_DECnet 12 /* Reserved for DECnet project */ +#define AF_NETBEUI 13 /* Reserved for 802.2LLC project*/ +#define AF_SECURITY 14 /* Security callback pseudo AF */ +#define AF_KEY 15 /* PF_KEY key management API */ +#define AF_NETLINK 16 +#define AF_ROUTE AF_NETLINK /* Alias to emulate 4.4BSD */ +#define AF_PACKET 17 /* Packet family */ +#define AF_ASH 18 /* Ash */ +#define AF_ECONET 19 /* Acorn Econet */ +#define AF_ATMSVC 20 /* ATM SVCs */ +#define AF_RDS 21 /* RDS sockets */ +#define AF_SNA 22 /* Linux SNA Project (nutters!) */ +#define AF_IRDA 23 /* IRDA sockets */ +#define AF_PPPOX 24 /* PPPoX sockets */ +#define AF_WANPIPE 25 /* Wanpipe API Sockets */ +#define AF_LLC 26 /* Linux LLC */ +#define AF_IB 27 /* Native InfiniBand address */ +#define AF_MPLS 28 /* MPLS */ +#define AF_CAN 29 /* Controller Area Network */ +#define AF_TIPC 30 /* TIPC sockets */ +#define AF_BLUETOOTH 31 /* Bluetooth sockets */ +#define AF_IUCV 32 /* IUCV sockets */ +#define AF_RXRPC 33 /* RxRPC sockets */ +#define AF_ISDN 34 /* mISDN sockets */ +#define AF_PHONET 35 /* Phonet sockets */ +#define AF_IEEE802154 36 /* IEEE802154 sockets */ +#define AF_CAIF 37 /* CAIF sockets */ +#define AF_ALG 38 /* Algorithm sockets */ +#define AF_NFC 39 /* NFC sockets */ +#define AF_VSOCK 40 /* vSockets */ +#define AF_KCM 41 /* Kernel Connection Multiplexor*/ +#define AF_QIPCRTR 42 /* Qualcomm IPC Router */ +#define AF_SMC 43 /* smc sockets: reserve number for + * PF_SMC protocol family that + * reuses AF_INET address family + */ +#define AF_XDP 44 /* XDP sockets */ + +#define AF_MAX 45 /* For now.. */ + +/* Protocol families, same as address families. */ +#define PF_UNSPEC AF_UNSPEC +#define PF_UNIX AF_UNIX +#define PF_LOCAL AF_LOCAL +#define PF_INET AF_INET +#define PF_AX25 AF_AX25 +#define PF_IPX AF_IPX +#define PF_APPLETALK AF_APPLETALK +#define PF_NETROM AF_NETROM +#define PF_BRIDGE AF_BRIDGE +#define PF_ATMPVC AF_ATMPVC +#define PF_X25 AF_X25 +#define PF_INET6 AF_INET6 +#define PF_ROSE AF_ROSE +#define PF_DECnet AF_DECnet +#define PF_NETBEUI AF_NETBEUI +#define PF_SECURITY AF_SECURITY +#define PF_KEY AF_KEY +#define PF_NETLINK AF_NETLINK +#define PF_ROUTE AF_ROUTE +#define PF_PACKET AF_PACKET +#define PF_ASH AF_ASH +#define PF_ECONET AF_ECONET +#define PF_ATMSVC AF_ATMSVC +#define PF_RDS AF_RDS +#define PF_SNA AF_SNA +#define PF_IRDA AF_IRDA +#define PF_PPPOX AF_PPPOX +#define PF_WANPIPE AF_WANPIPE +#define PF_LLC AF_LLC +#define PF_IB AF_IB +#define PF_MPLS AF_MPLS +#define PF_CAN AF_CAN +#define PF_TIPC AF_TIPC +#define PF_BLUETOOTH AF_BLUETOOTH +#define PF_IUCV AF_IUCV +#define PF_RXRPC AF_RXRPC +#define PF_ISDN AF_ISDN +#define PF_PHONET AF_PHONET +#define PF_IEEE802154 AF_IEEE802154 +#define PF_CAIF AF_CAIF +#define PF_ALG AF_ALG +#define PF_NFC AF_NFC +#define PF_VSOCK AF_VSOCK +#define PF_KCM AF_KCM +#define PF_QIPCRTR AF_QIPCRTR +#define PF_SMC AF_SMC +#define PF_XDP AF_XDP +#define PF_MAX AF_MAX + +/* Maximum queue length specifiable by listen. */ +#define SOMAXCONN 4096 + +/* Flags we can use with send/ and recv. + Added those for 1003.1g not all are supported yet + */ + +#define MSG_OOB 1 +#define MSG_PEEK 2 +#define MSG_DONTROUTE 4 +#define MSG_TRYHARD 4 /* Synonym for MSG_DONTROUTE for DECnet */ +#define MSG_CTRUNC 8 +#define MSG_PROBE 0x10 /* Do not send. Only probe path f.e. for MTU */ +#define MSG_TRUNC 0x20 +#define MSG_DONTWAIT 0x40 /* Nonblocking io */ +#define MSG_EOR 0x80 /* End of record */ +#define MSG_WAITALL 0x100 /* Wait for a full request */ +#define MSG_FIN 0x200 +#define MSG_SYN 0x400 +#define MSG_CONFIRM 0x800 /* Confirm path validity */ +#define MSG_RST 0x1000 +#define MSG_ERRQUEUE 0x2000 /* Fetch message from error queue */ +#define MSG_NOSIGNAL 0x4000 /* Do not generate SIGPIPE */ +#define MSG_MORE 0x8000 /* Sender will send more */ +#define MSG_WAITFORONE 0x10000 /* recvmmsg(): block until 1+ packets avail */ +#define MSG_SENDPAGE_NOPOLICY 0x10000 /* sendpage() internal : do no apply policy */ +#define MSG_SENDPAGE_NOTLAST 0x20000 /* sendpage() internal : not the last page */ +#define MSG_BATCH 0x40000 /* sendmmsg(): more messages coming */ +#define MSG_EOF MSG_FIN +#define MSG_NO_SHARED_FRAGS 0x80000 /* sendpage() internal : page frags are not shared */ +#define MSG_SENDPAGE_DECRYPTED 0x100000 /* sendpage() internal : page may carry + * plain text and require encryption + */ + +#define MSG_ZEROCOPY 0x4000000 /* Use user data in kernel path */ +#define MSG_FASTOPEN 0x20000000 /* Send data in TCP SYN */ +#define MSG_CMSG_CLOEXEC 0x40000000 /* Set close_on_exec for file + descriptor received through + SCM_RIGHTS */ +#if defined(CONFIG_COMPAT) +#define MSG_CMSG_COMPAT 0x80000000 /* This message needs 32 bit fixups */ +#else +#define MSG_CMSG_COMPAT 0 /* We never have 32 bit fixups */ +#endif + + +/* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx */ +#define SOL_IP 0 +/* #define SOL_ICMP 1 No-no-no! Due to Linux :-) we cannot use SOL_ICMP=1 */ +#define SOL_TCP 6 +#define SOL_UDP 17 +#define SOL_IPV6 41 +#define SOL_ICMPV6 58 +#define SOL_SCTP 132 +#define SOL_UDPLITE 136 /* UDP-Lite (RFC 3828) */ +#define SOL_RAW 255 +#define SOL_IPX 256 +#define SOL_AX25 257 +#define SOL_ATALK 258 +#define SOL_NETROM 259 +#define SOL_ROSE 260 +#define SOL_DECNET 261 +#define SOL_X25 262 +#define SOL_PACKET 263 +#define SOL_ATM 264 /* ATM layer (cell level) */ +#define SOL_AAL 265 /* ATM Adaption Layer (packet level) */ +#define SOL_IRDA 266 +#define SOL_NETBEUI 267 +#define SOL_LLC 268 +#define SOL_DCCP 269 +#define SOL_NETLINK 270 +#define SOL_TIPC 271 +#define SOL_RXRPC 272 +#define SOL_PPPOL2TP 273 +#define SOL_BLUETOOTH 274 +#define SOL_PNPIPE 275 +#define SOL_RDS 276 +#define SOL_IUCV 277 +#define SOL_CAIF 278 +#define SOL_ALG 279 +#define SOL_NFC 280 +#define SOL_KCM 281 +#define SOL_TLS 282 +#define SOL_XDP 283 + +/* IPX options */ +#define IPX_TYPE 1 + +extern int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr_storage *kaddr); +extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data); + +struct timespec64; +struct __kernel_timespec; +struct old_timespec32; + +struct scm_timestamping_internal { + struct timespec64 ts[3]; +}; + +extern void put_cmsg_scm_timestamping64(struct msghdr *msg, struct scm_timestamping_internal *tss); +extern void put_cmsg_scm_timestamping(struct msghdr *msg, struct scm_timestamping_internal *tss); + +/* The __sys_...msg variants allow MSG_CMSG_COMPAT iff + * forbid_cmsg_compat==false + */ +extern long __sys_recvmsg(int fd, struct user_msghdr __user *msg, + unsigned int flags, bool forbid_cmsg_compat); +extern long __sys_sendmsg(int fd, struct user_msghdr __user *msg, + unsigned int flags, bool forbid_cmsg_compat); +extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, + unsigned int vlen, unsigned int flags, + struct __kernel_timespec __user *timeout, + struct old_timespec32 __user *timeout32); +extern int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg, + unsigned int vlen, unsigned int flags, + bool forbid_cmsg_compat); +extern long __sys_sendmsg_sock(struct socket *sock, struct msghdr *msg, + unsigned int flags); +extern long __sys_recvmsg_sock(struct socket *sock, struct msghdr *msg, + struct user_msghdr __user *umsg, + struct sockaddr __user *uaddr, + unsigned int flags); +extern int sendmsg_copy_msghdr(struct msghdr *msg, + struct user_msghdr __user *umsg, unsigned flags, + struct iovec **iov); +extern int recvmsg_copy_msghdr(struct msghdr *msg, + struct user_msghdr __user *umsg, unsigned flags, + struct sockaddr __user **uaddr, + struct iovec **iov); +extern int __copy_msghdr_from_user(struct msghdr *kmsg, + struct user_msghdr __user *umsg, + struct sockaddr __user **save_addr, + struct iovec __user **uiov, size_t *nsegs); + +/* helpers which do the actual work for syscalls */ +extern int __sys_recvfrom(int fd, void __user *ubuf, size_t size, + unsigned int flags, struct sockaddr __user *addr, + int __user *addr_len); +extern int __sys_sendto(int fd, void __user *buff, size_t len, + unsigned int flags, struct sockaddr __user *addr, + int addr_len); +extern int __sys_accept4_file(struct file *file, unsigned file_flags, + struct sockaddr __user *upeer_sockaddr, + int __user *upeer_addrlen, int flags, + unsigned long nofile); +extern int __sys_accept4(int fd, struct sockaddr __user *upeer_sockaddr, + int __user *upeer_addrlen, int flags); +extern int __sys_socket(int family, int type, int protocol); +extern int __sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen); +extern int __sys_connect_file(struct file *file, struct sockaddr_storage *addr, + int addrlen, int file_flags); +extern int __sys_connect(int fd, struct sockaddr __user *uservaddr, + int addrlen); +extern int __sys_listen(int fd, int backlog); +extern int __sys_getsockname(int fd, struct sockaddr __user *usockaddr, + int __user *usockaddr_len); +extern int __sys_getpeername(int fd, struct sockaddr __user *usockaddr, + int __user *usockaddr_len); +extern int __sys_socketpair(int family, int type, int protocol, + int __user *usockvec); +extern int __sys_shutdown(int fd, int how); + +extern struct ns_common *get_net_ns(struct ns_common *ns); +#endif /* _LINUX_SOCKET_H */ diff --git a/tools/perf/trace/beauty/socket.sh b/tools/perf/trace/beauty/socket.sh new file mode 100755 index 000000000000..3820e5c82293 --- /dev/null +++ b/tools/perf/trace/beauty/socket.sh @@ -0,0 +1,24 @@ +#!/bin/sh +# SPDX-License-Identifier: LGPL-2.1 + +# This one uses a copy from the kernel sources headers that is in a +# place used just for these tools/perf/beauty/ usage, we shouldn't not +# put it in tools/include/linux otherwise they would be used in the +# normal compiler building process and would drag needless stuff from the +# kernel. + +# When what these scripts need is already in tools/include/ then use it, +# otherwise grab and check the copy from the kernel sources just for these +# string table building scripts. + +[ $# -eq 1 ] && header_dir=$1 || header_dir=tools/perf/trace/beauty/include/linux/ + +printf "static const char *socket_families[] = {\n" +# #define AF_LOCAL 1 /* POSIX name for AF_UNIX */ +regex='^#define[[:space:]]+AF_(\w+)[[:space:]]+([[:digit:]]+).*' + +egrep $regex ${header_dir}/socket.h | \ + sed -r "s/$regex/\2 \1/g" | \ + xargs printf "\t[%s] = \"%s\",\n" | \ + egrep -v "\"(UNIX|MAX)\"" +printf "};\n" -- cgit v1.2.3-59-g8ed1b From f3cf7fa963c46391da54a0e50f54c089c9b4c450 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 12 Aug 2020 08:43:51 -0300 Subject: perf trace beauty: Use the autogenerated protocol family table That helps us not to lose new protocol families when they are introduced, replacing that hardcoded, dated family->string table. To recap what this allows us to do: # perf trace -e syscalls:sys_enter_socket/max-stack=10/ --filter=family==INET --max-events=1 0.000 fetchmail/41097 syscalls:sys_enter_socket(family: INET, type: DGRAM|CLOEXEC|NONBLOCK, protocol: IP) __GI___socket (inlined) reopen (/usr/lib64/libresolv-2.31.so) send_dg (/usr/lib64/libresolv-2.31.so) __res_context_send (/usr/lib64/libresolv-2.31.so) __GI___res_context_query (inlined) __GI___res_context_search (inlined) _nss_dns_gethostbyname4_r (/usr/lib64/libnss_dns-2.31.so) gaih_inet.constprop.0 (/usr/lib64/libc-2.31.so) __GI_getaddrinfo (inlined) [0x15cb2] (/usr/bin/fetchmail) # More work is still needed to allow for the more natura strace-like syscall name usage instead of the trace event name: # perf trace -e socket/max-stack=10,family==INET/ --max-events=1 I.e. to allow for modifiers to follow the syscall name and for logical expressions to be accepted as filters to use with that syscall, be it as trace event filters or BPF based ones. Using -v we can see how the trace event filter is built: # perf trace -v -e syscalls:sys_enter_socket/call-graph=dwarf/ --filter=family==INET --max-events=2 New filter for syscalls:sys_enter_socket: (family==0x2) && (common_pid != 41384 && common_pid != 2836) $ tools/perf/trace/beauty/socket.sh | grep -w 2 [2] = "INET", $ Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Cc: Steven Rostedt Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Makefile.perf | 9 +++++++++ tools/perf/check-headers.sh | 3 +++ tools/perf/trace/beauty/sockaddr.c | 9 +-------- 3 files changed, 13 insertions(+), 8 deletions(-) (limited to 'tools') diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index 86dbb51bb272..e339e225410c 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -418,6 +418,7 @@ export INSTALL SHELL_PATH SHELL = $(SHELL_PATH) +beauty_linux_dir := $(srctree)/tools/perf/trace/beauty/include/linux/ linux_uapi_dir := $(srctree)/tools/include/uapi/linux asm_generic_uapi_dir := $(srctree)/tools/include/uapi/asm-generic arch_asm_uapi_dir := $(srctree)/tools/arch/$(SRCARCH)/include/uapi/asm/ @@ -501,6 +502,12 @@ socket_ipproto_tbl := $(srctree)/tools/perf/trace/beauty/socket_ipproto.sh $(socket_ipproto_array): $(linux_uapi_dir)/in.h $(socket_ipproto_tbl) $(Q)$(SHELL) '$(socket_ipproto_tbl)' $(linux_uapi_dir) > $@ +socket_arrays := $(beauty_outdir)/socket_arrays.c +socket_tbl := $(srctree)/tools/perf/trace/beauty/socket.sh + +$(socket_arrays): $(beauty_linux_dir)/socket.h $(socket_tbl) + $(Q)$(SHELL) '$(socket_tbl)' $(beauty_linux_dir) > $@ + vhost_virtio_ioctl_array := $(beauty_ioctl_outdir)/vhost_virtio_ioctl_array.c vhost_virtio_hdr_dir := $(srctree)/tools/include/uapi/linux vhost_virtio_ioctl_tbl := $(srctree)/tools/perf/trace/beauty/vhost_virtio_ioctl.sh @@ -697,6 +704,7 @@ prepare: $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)common-cmds.h archheaders $(drm_ioc $(kcmp_type_array) \ $(kvm_ioctl_array) \ $(socket_ipproto_array) \ + $(socket_arrays) \ $(vhost_virtio_ioctl_array) \ $(madvise_behavior_array) \ $(mmap_flags_array) \ @@ -1006,6 +1014,7 @@ clean:: $(LIBTRACEEVENT)-clean $(LIBAPI)-clean $(LIBBPF)-clean $(LIBSUBCMD)-clea $(OUTPUT)$(kvm_ioctl_array) \ $(OUTPUT)$(kcmp_type_array) \ $(OUTPUT)$(socket_ipproto_array) \ + $(OUTPUT)$(socket_arrays) \ $(OUTPUT)$(vhost_virtio_ioctl_array) \ $(OUTPUT)$(perf_ioctl_array) \ $(OUTPUT)$(prctl_option_array) \ diff --git a/tools/perf/check-headers.sh b/tools/perf/check-headers.sh index 94c2bc22c2bb..0b4d6431b072 100755 --- a/tools/perf/check-headers.sh +++ b/tools/perf/check-headers.sh @@ -128,6 +128,9 @@ check arch/x86/lib/insn.c '-I "^#include [\"<]\(../include/\)*asm/in # diff non-symmetric files check_2 tools/perf/arch/x86/entry/syscalls/syscall_64.tbl arch/x86/entry/syscalls/syscall_64.tbl +# These will require a beauty_check when we get some more like that +check_2 tools/perf/trace/beauty/include/linux/socket.h include/linux/socket.h + # check duplicated library files check_2 tools/perf/util/hashmap.h tools/lib/bpf/hashmap.h check_2 tools/perf/util/hashmap.c tools/lib/bpf/hashmap.c diff --git a/tools/perf/trace/beauty/sockaddr.c b/tools/perf/trace/beauty/sockaddr.c index e0c13e6a5788..cd110634ab09 100644 --- a/tools/perf/trace/beauty/sockaddr.c +++ b/tools/perf/trace/beauty/sockaddr.c @@ -7,14 +7,7 @@ #include #include -static const char *socket_families[] = { - "UNSPEC", "LOCAL", "INET", "AX25", "IPX", "APPLETALK", "NETROM", - "BRIDGE", "ATMPVC", "X25", "INET6", "ROSE", "DECnet", "NETBEUI", - "SECURITY", "KEY", "NETLINK", "PACKET", "ASH", "ECONET", "ATMSVC", - "RDS", "SNA", "IRDA", "PPPOX", "WANPIPE", "LLC", "IB", "CAN", "TIPC", - "BLUETOOTH", "IUCV", "RXRPC", "ISDN", "PHONET", "IEEE802154", "CAIF", - "ALG", "NFC", "VSOCK", -}; +#include "trace/beauty/generated/socket_arrays.c" DEFINE_STRARRAY(socket_families, "PF_"); static size_t af_inet__scnprintf(struct sockaddr *sa, char *bf, size_t size) -- cgit v1.2.3-59-g8ed1b From 23db762be2eca6d3a0ee673a2bad2ce5411900f3 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 12 Aug 2020 08:52:32 -0300 Subject: tools headers kvm s390: Sync headers with the kernel sources To pick the changes in: 23a60f834406 ("s390/kvm: diagnose 0x318 sync and reset") None of them trigger any changes in tooling, this time this is just to silence these perf build warnings: Warning: Kernel ABI header at 'tools/arch/s390/include/uapi/asm/kvm.h' differs from latest version at 'arch/s390/include/uapi/asm/kvm.h' diff -u tools/arch/s390/include/uapi/asm/kvm.h arch/s390/include/uapi/asm/kvm.h Cc: Adrian Hunter Cc: Christian Borntraeger Cc: Collin Walling Cc: Jiri Olsa Cc: Namhyung Kim Signed-off-by: Arnaldo Carvalho de Melo --- tools/arch/s390/include/uapi/asm/kvm.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/arch/s390/include/uapi/asm/kvm.h b/tools/arch/s390/include/uapi/asm/kvm.h index 436ec7636927..7a6b14874d65 100644 --- a/tools/arch/s390/include/uapi/asm/kvm.h +++ b/tools/arch/s390/include/uapi/asm/kvm.h @@ -231,11 +231,13 @@ struct kvm_guest_debug_arch { #define KVM_SYNC_GSCB (1UL << 9) #define KVM_SYNC_BPBC (1UL << 10) #define KVM_SYNC_ETOKEN (1UL << 11) +#define KVM_SYNC_DIAG318 (1UL << 12) #define KVM_SYNC_S390_VALID_FIELDS \ (KVM_SYNC_PREFIX | KVM_SYNC_GPRS | KVM_SYNC_ACRS | KVM_SYNC_CRS | \ KVM_SYNC_ARCH0 | KVM_SYNC_PFAULT | KVM_SYNC_VRS | KVM_SYNC_RICCB | \ - KVM_SYNC_FPRS | KVM_SYNC_GSCB | KVM_SYNC_BPBC | KVM_SYNC_ETOKEN) + KVM_SYNC_FPRS | KVM_SYNC_GSCB | KVM_SYNC_BPBC | KVM_SYNC_ETOKEN | \ + KVM_SYNC_DIAG318) /* length and alignment of the sdnx as a power of two */ #define SDNXC 8 @@ -264,7 +266,8 @@ struct kvm_sync_regs { __u8 reserved2 : 7; __u8 padding1[51]; /* riccb needs to be 64byte aligned */ __u8 riccb[64]; /* runtime instrumentation controls block */ - __u8 padding2[192]; /* sdnx needs to be 256byte aligned */ + __u64 diag318; /* diagnose 0x318 info */ + __u8 padding2[184]; /* sdnx needs to be 256byte aligned */ union { __u8 sdnx[SDNXL]; /* state description annex */ struct { -- cgit v1.2.3-59-g8ed1b From fe452fb84329b655324d55220a8da886fc9ba6e7 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 12 Aug 2020 08:57:07 -0300 Subject: tools include UAPI: Sync linux/vhost.h with the kernel sources To get the changes in: 25abc060d282 ("vhost-vdpa: support IOTLB batching hints") This doesn't result in any changes in tooling, no new ioctls to be picked up by the id->string table generators, etc. Silencing this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/vhost.h' differs from latest version at 'include/uapi/linux/vhost.h' diff -u tools/include/uapi/linux/vhost.h include/uapi/linux/vhost.h Cc: Adrian Hunter Cc: Jason Wang Cc: Jiri Olsa Cc: Michael S. Tsirkin Cc: Namhyung Kim Signed-off-by: Arnaldo Carvalho de Melo --- tools/include/uapi/linux/vhost.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'tools') diff --git a/tools/include/uapi/linux/vhost.h b/tools/include/uapi/linux/vhost.h index 0c2349612e77..75232185324a 100644 --- a/tools/include/uapi/linux/vhost.h +++ b/tools/include/uapi/linux/vhost.h @@ -91,6 +91,8 @@ /* Use message type V2 */ #define VHOST_BACKEND_F_IOTLB_MSG_V2 0x1 +/* IOTLB can accept batching hints */ +#define VHOST_BACKEND_F_IOTLB_BATCH 0x2 #define VHOST_SET_BACKEND_FEATURES _IOW(VHOST_VIRTIO, 0x25, __u64) #define VHOST_GET_BACKEND_FEATURES _IOR(VHOST_VIRTIO, 0x26, __u64) -- cgit v1.2.3-59-g8ed1b From 6016e0348792bb65719abaf4424e1e44ed09aeb2 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 12 Aug 2020 09:02:40 -0300 Subject: tools headers UAPI: Sync kvm.h headers with the kernel sources To pick the changes in: 3edd68399dc1 ("KVM: x86: Add a capability for GUEST_MAXPHYADDR < HOST_MAXPHYADDR support") 1aa561b1a4c0 ("kvm: x86: Add "last CPU" to some KVM_EXIT information") 23a60f834406 ("s390/kvm: diagnose 0x318 sync and reset") That do not result in any change in tooling, as the additions are not being used in any table generator. This silences these perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/kvm.h' differs from latest version at 'include/uapi/linux/kvm.h' diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h Cc: Adrian Hunter Cc: Christian Borntraeger Cc: Collin Walling Cc: Jim Mattson Cc: Jiri Olsa Cc: Mohammed Gamal Cc: Namhyung Kim Cc: Paolo Bonzini Signed-off-by: Arnaldo Carvalho de Melo --- tools/include/uapi/linux/kvm.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'tools') diff --git a/tools/include/uapi/linux/kvm.h b/tools/include/uapi/linux/kvm.h index 4fdf30316582..f6d86033c4fa 100644 --- a/tools/include/uapi/linux/kvm.h +++ b/tools/include/uapi/linux/kvm.h @@ -289,6 +289,7 @@ struct kvm_run { /* KVM_EXIT_FAIL_ENTRY */ struct { __u64 hardware_entry_failure_reason; + __u32 cpu; } fail_entry; /* KVM_EXIT_EXCEPTION */ struct { @@ -1031,6 +1032,9 @@ struct kvm_ppc_resize_hpt { #define KVM_CAP_PPC_SECURE_GUEST 181 #define KVM_CAP_HALT_POLL 182 #define KVM_CAP_ASYNC_PF_INT 183 +#define KVM_CAP_LAST_CPU 184 +#define KVM_CAP_SMALLER_MAXPHYADDR 185 +#define KVM_CAP_S390_DIAG318 186 #ifdef KVM_CAP_IRQ_ROUTING -- cgit v1.2.3-59-g8ed1b From 72d69c2a4ee1fe2a66c3296ad42e60d563ba9a36 Mon Sep 17 00:00:00 2001 From: Alexander Gordeev Date: Mon, 10 Aug 2020 08:21:59 +0200 Subject: perf bench numa: Fix number of processes in "2x3-convergence" test Signed-off-by: Alexander Gordeev Acked-by: Namhyung Kim Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Mark Rutland Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/d949f5f48e17fc816f3beecf8479f1b2480345e4.1597004831.git.agordeev@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/bench/numa.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/bench/numa.c b/tools/perf/bench/numa.c index 5797253b9700..3aad1fc6cbca 100644 --- a/tools/perf/bench/numa.c +++ b/tools/perf/bench/numa.c @@ -1755,7 +1755,7 @@ static const char *tests[][MAX_ARGS] = { { " 1x3-convergence,", "mem", "-p", "1", "-t", "3", "-P", "512", OPT_CONV }, { " 1x4-convergence,", "mem", "-p", "1", "-t", "4", "-P", "512", OPT_CONV }, { " 1x6-convergence,", "mem", "-p", "1", "-t", "6", "-P", "1020", OPT_CONV }, - { " 2x3-convergence,", "mem", "-p", "3", "-t", "3", "-P", "1020", OPT_CONV }, + { " 2x3-convergence,", "mem", "-p", "2", "-t", "3", "-P", "1020", OPT_CONV }, { " 3x3-convergence,", "mem", "-p", "3", "-t", "3", "-P", "1020", OPT_CONV }, { " 4x4-convergence,", "mem", "-p", "4", "-t", "4", "-P", "512", OPT_CONV }, { " 4x4-convergence-NOTHP,", -- cgit v1.2.3-59-g8ed1b From 85372c6974aad0e40b97513434694abe84c1017e Mon Sep 17 00:00:00 2001 From: Alexander Gordeev Date: Mon, 10 Aug 2020 08:22:00 +0200 Subject: perf bench numa: Fix benchmark names Standard benchmark names let users know the tests specifics. For example "2x1-bw-process" name tells that two processes one thread each are run and the RAM bandwidth is measured. Several benchmarks names do not correspond to their actual running configuration. Fix that and also some whitespace and comment inconsistencies. Signed-off-by: Alexander Gordeev Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/6b6f2084f132ee8e9203dc7c32f9deb209b87a68.1597004831.git.agordeev@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/bench/numa.c | 35 +++++++++++++++++------------------ 1 file changed, 17 insertions(+), 18 deletions(-) (limited to 'tools') diff --git a/tools/perf/bench/numa.c b/tools/perf/bench/numa.c index 3aad1fc6cbca..31e2601d39c8 100644 --- a/tools/perf/bench/numa.c +++ b/tools/perf/bench/numa.c @@ -813,12 +813,12 @@ static u64 do_work(u8 *__data, long bytes, int nr, int nr_max, int loop, u64 val } } } else if (!g->p.data_backwards || (nr + loop) & 1) { + /* Process data forwards: */ d0 = data + off; d = data + off + 1; d1 = data + words; - /* Process data forwards: */ for (;;) { if (unlikely(d >= d1)) d = data; @@ -836,7 +836,6 @@ static u64 do_work(u8 *__data, long bytes, int nr, int nr_max, int loop, u64 val d = data + off - 1; d1 = data + words; - /* Process data forwards: */ for (;;) { if (unlikely(d < data)) d = data + words-1; @@ -1733,12 +1732,12 @@ err: */ static const char *tests[][MAX_ARGS] = { /* Basic single-stream NUMA bandwidth measurements: */ - { "RAM-bw-local,", "mem", "-p", "1", "-t", "1", "-P", "1024", + { "RAM-bw-local,", "mem", "-p", "1", "-t", "1", "-P", "1024", "-C" , "0", "-M", "0", OPT_BW_RAM }, { "RAM-bw-local-NOTHP,", "mem", "-p", "1", "-t", "1", "-P", "1024", "-C" , "0", "-M", "0", OPT_BW_RAM_NOTHP }, - { "RAM-bw-remote,", "mem", "-p", "1", "-t", "1", "-P", "1024", + { "RAM-bw-remote,", "mem", "-p", "1", "-t", "1", "-P", "1024", "-C" , "0", "-M", "1", OPT_BW_RAM }, /* 2-stream NUMA bandwidth measurements: */ @@ -1780,24 +1779,24 @@ static const char *tests[][MAX_ARGS] = { "mem", "-p", "8", "-t", "1", "-P", " 512", OPT_BW_NOTHP }, { "16x1-bw-process,", "mem", "-p", "16", "-t", "1", "-P", "256", OPT_BW }, - { " 4x1-bw-thread,", "mem", "-p", "1", "-t", "4", "-T", "256", OPT_BW }, - { " 8x1-bw-thread,", "mem", "-p", "1", "-t", "8", "-T", "256", OPT_BW }, - { "16x1-bw-thread,", "mem", "-p", "1", "-t", "16", "-T", "128", OPT_BW }, - { "32x1-bw-thread,", "mem", "-p", "1", "-t", "32", "-T", "64", OPT_BW }, + { " 1x4-bw-thread,", "mem", "-p", "1", "-t", "4", "-T", "256", OPT_BW }, + { " 1x8-bw-thread,", "mem", "-p", "1", "-t", "8", "-T", "256", OPT_BW }, + { "1x16-bw-thread,", "mem", "-p", "1", "-t", "16", "-T", "128", OPT_BW }, + { "1x32-bw-thread,", "mem", "-p", "1", "-t", "32", "-T", "64", OPT_BW }, - { " 2x3-bw-thread,", "mem", "-p", "2", "-t", "3", "-P", "512", OPT_BW }, - { " 4x4-bw-thread,", "mem", "-p", "4", "-t", "4", "-P", "512", OPT_BW }, - { " 4x6-bw-thread,", "mem", "-p", "4", "-t", "6", "-P", "512", OPT_BW }, - { " 4x8-bw-thread,", "mem", "-p", "4", "-t", "8", "-P", "512", OPT_BW }, - { " 4x8-bw-thread-NOTHP,", + { " 2x3-bw-process,", "mem", "-p", "2", "-t", "3", "-P", "512", OPT_BW }, + { " 4x4-bw-process,", "mem", "-p", "4", "-t", "4", "-P", "512", OPT_BW }, + { " 4x6-bw-process,", "mem", "-p", "4", "-t", "6", "-P", "512", OPT_BW }, + { " 4x8-bw-process,", "mem", "-p", "4", "-t", "8", "-P", "512", OPT_BW }, + { " 4x8-bw-process-NOTHP,", "mem", "-p", "4", "-t", "8", "-P", "512", OPT_BW_NOTHP }, - { " 3x3-bw-thread,", "mem", "-p", "3", "-t", "3", "-P", "512", OPT_BW }, - { " 5x5-bw-thread,", "mem", "-p", "5", "-t", "5", "-P", "512", OPT_BW }, + { " 3x3-bw-process,", "mem", "-p", "3", "-t", "3", "-P", "512", OPT_BW }, + { " 5x5-bw-process,", "mem", "-p", "5", "-t", "5", "-P", "512", OPT_BW }, - { "2x16-bw-thread,", "mem", "-p", "2", "-t", "16", "-P", "512", OPT_BW }, - { "1x32-bw-thread,", "mem", "-p", "1", "-t", "32", "-P", "2048", OPT_BW }, + { "2x16-bw-process,", "mem", "-p", "2", "-t", "16", "-P", "512", OPT_BW }, + { "1x32-bw-process,", "mem", "-p", "1", "-t", "32", "-P", "2048", OPT_BW }, - { "numa02-bw,", "mem", "-p", "1", "-t", "32", "-T", "32", OPT_BW }, + { "numa02-bw,", "mem", "-p", "1", "-t", "32", "-T", "32", OPT_BW }, { "numa02-bw-NOTHP,", "mem", "-p", "1", "-t", "32", "-T", "32", OPT_BW_NOTHP }, { "numa01-bw-thread,", "mem", "-p", "2", "-t", "16", "-T", "192", OPT_BW }, { "numa01-bw-thread-NOTHP,", -- cgit v1.2.3-59-g8ed1b From f9f95068266d875d1840ad90abf51773a765f41a Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Wed, 12 Aug 2020 07:46:47 +0100 Subject: perf bench: Fix a couple of spelling mistakes in options text There are a couple of spelling mistakes in the text. Fix these. Signed-off-by: Colin King Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Cc: kernel-janitors@vger.kernel.org Link: http://lore.kernel.org/lkml/20200812064647.200132-1-colin.king@canonical.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/bench/find-bit-bench.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/bench/find-bit-bench.c b/tools/perf/bench/find-bit-bench.c index fa90f3e9d368..73b5bcc5946a 100644 --- a/tools/perf/bench/find-bit-bench.c +++ b/tools/perf/bench/find-bit-bench.c @@ -17,9 +17,9 @@ static unsigned int inner_iterations = 100000; static const struct option options[] = { OPT_UINTEGER('i', "outer-iterations", &outer_iterations, - "Number of outerer iterations used"), + "Number of outer iterations used"), OPT_UINTEGER('j', "inner-iterations", &inner_iterations, - "Number of outerer iterations used"), + "Number of inner iterations used"), OPT_END() }; -- cgit v1.2.3-59-g8ed1b From d566a9c2d482640abf5e602957b44e7b3bbe858d Mon Sep 17 00:00:00 2001 From: David Ahern Date: Fri, 7 Aug 2020 10:48:44 -0600 Subject: perf sched: Prefer sched_waking event when it exists Commit fbd705a0c618 ("sched: Introduce the 'trace_sched_waking' tracepoint") added sched_waking tracepoint which should be preferred over sched_wakeup when analyzing scheduling delays. Update 'perf sched record' to collect sched_waking events if it exists and fallback to sched_wakeup if it does not. Similarly, update timehist command to skip sched_wakeup events if the session includes sched_waking (ie., sched_waking is preferred over sched_wakeup). Signed-off-by: David Ahern Acked-by: Namhyung Kim Cc: Jiri Olsa Link: http://lore.kernel.org/lkml/20200807164844.44870-1-dsahern@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-sched.c | 32 +++++++++++++++++++++++++++++--- 1 file changed, 29 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index 459e4229945e..0c7d599fa555 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -2398,6 +2398,15 @@ static void timehist_print_wakeup_event(struct perf_sched *sched, printf("\n"); } +static int timehist_sched_wakeup_ignore(struct perf_tool *tool __maybe_unused, + union perf_event *event __maybe_unused, + struct evsel *evsel __maybe_unused, + struct perf_sample *sample __maybe_unused, + struct machine *machine __maybe_unused) +{ + return 0; +} + static int timehist_sched_wakeup_event(struct perf_tool *tool, union perf_event *event __maybe_unused, struct evsel *evsel, @@ -2958,9 +2967,10 @@ static int timehist_check_attr(struct perf_sched *sched, static int perf_sched__timehist(struct perf_sched *sched) { - const struct evsel_str_handler handlers[] = { + struct evsel_str_handler handlers[] = { { "sched:sched_switch", timehist_sched_switch_event, }, { "sched:sched_wakeup", timehist_sched_wakeup_event, }, + { "sched:sched_waking", timehist_sched_wakeup_event, }, { "sched:sched_wakeup_new", timehist_sched_wakeup_event, }, }; const struct evsel_str_handler migrate_handlers[] = { @@ -3018,6 +3028,11 @@ static int perf_sched__timehist(struct perf_sched *sched) setup_pager(); + /* prefer sched_waking if it is captured */ + if (perf_evlist__find_tracepoint_by_name(session->evlist, + "sched:sched_waking")) + handlers[1].handler = timehist_sched_wakeup_ignore; + /* setup per-evsel handlers */ if (perf_session__set_tracepoints_handlers(session, handlers)) goto out; @@ -3330,12 +3345,16 @@ static int __cmd_record(int argc, const char **argv) "-e", "sched:sched_stat_iowait", "-e", "sched:sched_stat_runtime", "-e", "sched:sched_process_fork", - "-e", "sched:sched_wakeup", "-e", "sched:sched_wakeup_new", "-e", "sched:sched_migrate_task", }; + struct tep_event *waking_event; - rec_argc = ARRAY_SIZE(record_args) + argc - 1; + /* + * +2 for either "-e", "sched:sched_wakeup" or + * "-e", "sched:sched_waking" + */ + rec_argc = ARRAY_SIZE(record_args) + 2 + argc - 1; rec_argv = calloc(rec_argc + 1, sizeof(char *)); if (rec_argv == NULL) @@ -3344,6 +3363,13 @@ static int __cmd_record(int argc, const char **argv) for (i = 0; i < ARRAY_SIZE(record_args); i++) rec_argv[i] = strdup(record_args[i]); + rec_argv[i++] = "-e"; + waking_event = trace_event__tp_format("sched", "sched_waking"); + if (!IS_ERR(waking_event)) + rec_argv[i++] = strdup("sched:sched_waking"); + else + rec_argv[i++] = strdup("sched:sched_wakeup"); + for (j = 1; j < (unsigned int)argc; j++, i++) rec_argv[i] = argv[j]; -- cgit v1.2.3-59-g8ed1b From 1beaef29c34154ccdcb3f1ae557f6883eda18840 Mon Sep 17 00:00:00 2001 From: Vincent Whitchurch Date: Mon, 10 Aug 2020 15:34:04 +0200 Subject: perf bench mem: Always memset source before memcpy For memcpy, the source pages are memset to zero only when --cycles is used. This leads to wildly different results with or without --cycles, since all sources pages are likely to be mapped to the same zero page without explicit writes. Before this fix: $ export cmd="./perf stat -e LLC-loads -- ./perf bench \ mem memcpy -s 1024MB -l 100 -f default" $ $cmd 2,935,826 LLC-loads 3.821677452 seconds time elapsed $ $cmd --cycles 217,533,436 LLC-loads 8.616725985 seconds time elapsed After this fix: $ $cmd 214,459,686 LLC-loads 8.674301124 seconds time elapsed $ $cmd --cycles 214,758,651 LLC-loads 8.644480006 seconds time elapsed Fixes: 47b5757bac03c338 ("perf bench mem: Move boilerplate memory allocation to the infrastructure") Signed-off-by: Vincent Whitchurch Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Cc: kernel@axis.com Link: http://lore.kernel.org/lkml/20200810133404.30829-1-vincent.whitchurch@axis.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/bench/mem-functions.c | 21 +++++++++++---------- 1 file changed, 11 insertions(+), 10 deletions(-) (limited to 'tools') diff --git a/tools/perf/bench/mem-functions.c b/tools/perf/bench/mem-functions.c index 9235b76501be..19d45c377ac1 100644 --- a/tools/perf/bench/mem-functions.c +++ b/tools/perf/bench/mem-functions.c @@ -223,12 +223,8 @@ static int bench_mem_common(int argc, const char **argv, struct bench_mem_info * return 0; } -static u64 do_memcpy_cycles(const struct function *r, size_t size, void *src, void *dst) +static void memcpy_prefault(memcpy_t fn, size_t size, void *src, void *dst) { - u64 cycle_start = 0ULL, cycle_end = 0ULL; - memcpy_t fn = r->fn.memcpy; - int i; - /* Make sure to always prefault zero pages even if MMAP_THRESH is crossed: */ memset(src, 0, size); @@ -237,6 +233,15 @@ static u64 do_memcpy_cycles(const struct function *r, size_t size, void *src, vo * to not measure page fault overhead: */ fn(dst, src, size); +} + +static u64 do_memcpy_cycles(const struct function *r, size_t size, void *src, void *dst) +{ + u64 cycle_start = 0ULL, cycle_end = 0ULL; + memcpy_t fn = r->fn.memcpy; + int i; + + memcpy_prefault(fn, size, src, dst); cycle_start = get_cycles(); for (i = 0; i < nr_loops; ++i) @@ -252,11 +257,7 @@ static double do_memcpy_gettimeofday(const struct function *r, size_t size, void memcpy_t fn = r->fn.memcpy; int i; - /* - * We prefault the freshly allocated memory range here, - * to not measure page fault overhead: - */ - fn(dst, src, size); + memcpy_prefault(fn, size, src, dst); BUG_ON(gettimeofday(&tv_start, NULL)); for (i = 0; i < nr_loops; ++i) -- cgit v1.2.3-59-g8ed1b From 194cb6b50f57676130491341f321394bb16ee624 Mon Sep 17 00:00:00 2001 From: Michael Petlan Date: Wed, 22 Jul 2020 15:58:45 +0200 Subject: perf test: Allow multiple probes in record+script_probe_vfs_getname.sh Sometimes when adding a kprobe by perf, it results in multiple probe points, such as the following: # ./perf probe -l probe:vfs_getname (on getname_flags:73@fs/namei.c with pathname) probe:vfs_getname_1 (on getname_flags:73@fs/namei.c with pathname) probe:vfs_getname_2 (on getname_flags:73@fs/namei.c with pathname) # cat /sys/kernel/debug/tracing/kprobe_events p:probe/vfs_getname _text+5501804 pathname=+0(+0(%gpr31)):string p:probe/vfs_getname_1 _text+5505388 pathname=+0(+0(%gpr31)):string p:probe/vfs_getname_2 _text+5508396 pathname=+0(+0(%gpr31)):string In this test, we need to record all of them and expect any of them in the perf-script output, since it's not clear which one will be used for the desired syscall: # perf stat -e probe:vfs_getname\* -- touch /tmp/nic Performance counter stats for 'touch /tmp/nic': 31 probe:vfs_getname_2 0 probe:vfs_getname_1 1 probe:vfs_getname 0.001421826 seconds time elapsed 0.001506000 seconds user 0.000000000 seconds sys If the test relies only on probe:vfs_getname, it might easily miss the relevant data. Signed-off-by: Michael Petlan Cc: Jiri Olsa LPU-Reference: 20200722135845.29958-1-mpetlan@redhat.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/tests/shell/record+script_probe_vfs_getname.sh | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/shell/record+script_probe_vfs_getname.sh b/tools/perf/tests/shell/record+script_probe_vfs_getname.sh index 54030c18bfc2..bf9e729b3ecf 100755 --- a/tools/perf/tests/shell/record+script_probe_vfs_getname.sh +++ b/tools/perf/tests/shell/record+script_probe_vfs_getname.sh @@ -20,13 +20,13 @@ file=$(mktemp /tmp/temporary_file.XXXXX) record_open_file() { echo "Recording open file:" - perf record -o ${perfdata} -e probe:vfs_getname touch $file + perf record -o ${perfdata} -e probe:vfs_getname\* touch $file } perf_script_filenames() { echo "Looking at perf.data file for vfs_getname records for the file we touched:" perf script -i ${perfdata} | \ - egrep " +touch +[0-9]+ +\[[0-9]+\] +[0-9]+\.[0-9]+: +probe:vfs_getname: +\([[:xdigit:]]+\) +pathname=\"${file}\"" + egrep " +touch +[0-9]+ +\[[0-9]+\] +[0-9]+\.[0-9]+: +probe:vfs_getname[_0-9]*: +\([[:xdigit:]]+\) +pathname=\"${file}\"" } add_probe_vfs_getname || skip_if_no_debuginfo -- cgit v1.2.3-59-g8ed1b From ce746d43a17493108c6754ce9450bd7317b93f7c Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Fri, 7 Aug 2020 13:32:41 -0600 Subject: libperf: Fix man page typos Fix various typos and inconsistent capitalization of CPU in the libperf man pages. Signed-off-by: Rob Herring Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/20200807193241.3904545-1-robh@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/lib/perf/Documentation/libperf-counting.txt | 14 ++++++++------ tools/lib/perf/Documentation/libperf-sampling.txt | 13 +++++++------ tools/lib/perf/Documentation/libperf.txt | 4 ++-- 3 files changed, 17 insertions(+), 14 deletions(-) (limited to 'tools') diff --git a/tools/lib/perf/Documentation/libperf-counting.txt b/tools/lib/perf/Documentation/libperf-counting.txt index cae9757f49c1..8b75efcd67ce 100644 --- a/tools/lib/perf/Documentation/libperf-counting.txt +++ b/tools/lib/perf/Documentation/libperf-counting.txt @@ -7,13 +7,13 @@ libperf-counting - counting interface DESCRIPTION ----------- -The counting interface provides API to meassure and get count for specific perf events. +The counting interface provides API to measure and get count for specific perf events. The following test tries to explain count on `counting.c` example. It is by no means complete guide to counting, but shows libperf basic API for counting. -The `counting.c` comes with libbperf package and can be compiled and run like: +The `counting.c` comes with libperf package and can be compiled and run like: [source,bash] -- @@ -26,7 +26,8 @@ count 176242, enabled 176242, run 176242 It requires root access, because of the `PERF_COUNT_SW_CPU_CLOCK` event, which is available only for root. -The `counting.c` example monitors two events on the current process and displays their count, in a nutshel it: +The `counting.c` example monitors two events on the current process and displays +their count, in a nutshell it: * creates events * adds them to the event list @@ -152,7 +153,7 @@ Configure event list with the thread map and open events: -- Both events are created as disabled (note the `disabled = 1` assignment above), -so we need to enable the whole list explicitely (both events). +so we need to enable the whole list explicitly (both events). From this moment events are counting and we can do our workload. @@ -167,7 +168,8 @@ When we are done we disable the events list. 79 perf_evlist__disable(evlist); -- -Now we need to get the counts from events, following code iterates throught the events list and read counts: +Now we need to get the counts from events, following code iterates through the +events list and read counts: [source,c] -- @@ -178,7 +180,7 @@ Now we need to get the counts from events, following code iterates throught the 85 } -- -And finaly cleanup. +And finally cleanup. We close the whole events list (both events) and remove it together with the threads map: diff --git a/tools/lib/perf/Documentation/libperf-sampling.txt b/tools/lib/perf/Documentation/libperf-sampling.txt index d71a7b4fcf5f..d6ca24f6ef78 100644 --- a/tools/lib/perf/Documentation/libperf-sampling.txt +++ b/tools/lib/perf/Documentation/libperf-sampling.txt @@ -8,13 +8,13 @@ libperf-sampling - sampling interface DESCRIPTION ----------- -The sampling interface provides API to meassure and get count for specific perf events. +The sampling interface provides API to measure and get count for specific perf events. The following test tries to explain count on `sampling.c` example. It is by no means complete guide to sampling, but shows libperf basic API for sampling. -The `sampling.c` comes with libbperf package and can be compiled and run like: +The `sampling.c` comes with libperf package and can be compiled and run like: [source,bash] -- @@ -33,7 +33,8 @@ cpu 0, pid 4465, tid 4470, ip 7f84fe0ebebf, period 176 It requires root access, because it uses hardware cycles event. -The `sampling.c` example profiles/samples all CPUs with hardware cycles, in a nutshel it: +The `sampling.c` example profiles/samples all CPUs with hardware cycles, in a +nutshell it: - creates events - adds them to the event list @@ -90,7 +91,7 @@ Once the setup is complete we start by defining cycles event using the `struct p 36 }; -- -Next step is to prepare cpus map. +Next step is to prepare CPUs map. In this case we will monitor all the available CPUs: @@ -152,7 +153,7 @@ Once the events list is open, we can create memory maps AKA perf ring buffers: -- The event is created as disabled (note the `disabled = 1` assignment above), -so we need to enable the events list explicitely. +so we need to enable the events list explicitly. From this moment the cycles event is sampling. @@ -212,7 +213,7 @@ Each sample needs to get parsed: 106 cpu, pid, tid, ip, period); -- -And finaly cleanup. +And finally cleanup. We close the whole events list (both events) and remove it together with the threads map: diff --git a/tools/lib/perf/Documentation/libperf.txt b/tools/lib/perf/Documentation/libperf.txt index 5a6bb512789d..0c74c30ed23a 100644 --- a/tools/lib/perf/Documentation/libperf.txt +++ b/tools/lib/perf/Documentation/libperf.txt @@ -29,7 +29,7 @@ SYNOPSIS void libperf_init(libperf_print_fn_t fn); -- -*API to handle cpu maps:* +*API to handle CPU maps:* [source,c] -- @@ -217,7 +217,7 @@ Following objects are key to the libperf interface: [horizontal] -struct perf_cpu_map:: Provides a cpu list abstraction. +struct perf_cpu_map:: Provides a CPU list abstraction. struct perf_thread_map:: Provides a thread list abstraction. -- cgit v1.2.3-59-g8ed1b From 1c695c88a1092b4013e3fffbe0ca685149165403 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Sat, 8 Aug 2020 14:21:54 +0200 Subject: perf tools: Rename 'enum dso_kernel_type' to 'enum dso_space_type' Rename enum dso_kernel_type to enum dso_space_type, which seems like better fit. Committer notes: This is used with 'struct dso'->kernel, which once was a boolean, so DSO_SPACE__USER is zero, !zero means some sort of kernel space, be it the host kernel space or a guest kernel space. Signed-off-by: Jiri Olsa Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/dso.c | 2 +- tools/perf/util/dso.h | 10 +++++----- tools/perf/util/header.c | 12 ++++++------ tools/perf/util/machine.c | 16 ++++++++-------- tools/perf/util/map.c | 4 ++-- tools/perf/util/symbol-elf.c | 2 +- tools/perf/util/symbol.c | 24 ++++++++++++------------ 7 files changed, 35 insertions(+), 35 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index be991cbbe9f8..5a3b4755f0b3 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -1265,7 +1265,7 @@ struct dso *dso__new_id(const char *name, struct dso_id *id) dso->has_build_id = 0; dso->has_srcline = 1; dso->a2l_fails = 1; - dso->kernel = DSO_TYPE_USER; + dso->kernel = DSO_SPACE__USER; dso->needs_swap = DSO_SWAP__UNSET; dso->comp = COMP_ID__NONE; RB_CLEAR_NODE(&dso->rb_node); diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h index 31c3a9244938..8ad17f395a19 100644 --- a/tools/perf/util/dso.h +++ b/tools/perf/util/dso.h @@ -46,10 +46,10 @@ enum dso_binary_type { DSO_BINARY_TYPE__NOT_FOUND, }; -enum dso_kernel_type { - DSO_TYPE_USER = 0, - DSO_TYPE_KERNEL, - DSO_TYPE_GUEST_KERNEL +enum dso_space_type { + DSO_SPACE__USER = 0, + DSO_SPACE__KERNEL, + DSO_SPACE__KERNEL_GUEST }; enum dso_swap_type { @@ -160,7 +160,7 @@ struct dso { void *a2l; char *symsrc_filename; unsigned int a2l_fails; - enum dso_kernel_type kernel; + enum dso_space_type kernel; enum dso_swap_type needs_swap; enum dso_binary_type symtab_type; enum dso_binary_type binary_type; diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 251faa9a5789..e1db72c73e89 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -2056,7 +2056,7 @@ static int __event_process_build_id(struct perf_record_header_build_id *bev, struct machine *machine; u16 cpumode; struct dso *dso; - enum dso_kernel_type dso_type; + enum dso_space_type dso_space; machine = perf_session__findnew_machine(session, bev->pid); if (!machine) @@ -2066,14 +2066,14 @@ static int __event_process_build_id(struct perf_record_header_build_id *bev, switch (cpumode) { case PERF_RECORD_MISC_KERNEL: - dso_type = DSO_TYPE_KERNEL; + dso_space = DSO_SPACE__KERNEL; break; case PERF_RECORD_MISC_GUEST_KERNEL: - dso_type = DSO_TYPE_GUEST_KERNEL; + dso_space = DSO_SPACE__KERNEL_GUEST; break; case PERF_RECORD_MISC_USER: case PERF_RECORD_MISC_GUEST_USER: - dso_type = DSO_TYPE_USER; + dso_space = DSO_SPACE__USER; break; default: goto out; @@ -2085,13 +2085,13 @@ static int __event_process_build_id(struct perf_record_header_build_id *bev, dso__set_build_id(dso, &bev->build_id); - if (dso_type != DSO_TYPE_USER) { + if (dso_space != DSO_SPACE__USER) { struct kmod_path m = { .name = NULL, }; if (!kmod_path__parse_name(&m, filename) && m.kmod) dso__set_module_info(dso, &m, machine); else - dso->kernel = dso_type; + dso->kernel = dso_space; free(m.name); } diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index 96af544eac8f..208b813e00ea 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -703,7 +703,7 @@ static struct dso *machine__findnew_module_dso(struct machine *machine, dso__set_module_info(dso, m, machine); dso__set_long_name(dso, strdup(filename), true); - dso->kernel = DSO_TYPE_KERNEL; + dso->kernel = DSO_SPACE__KERNEL; } dso__get(dso); @@ -753,7 +753,7 @@ static int machine__process_ksymbol_register(struct machine *machine, struct dso *dso = dso__new(event->ksymbol.name); if (dso) { - dso->kernel = DSO_TYPE_KERNEL; + dso->kernel = DSO_SPACE__KERNEL; map = map__new2(0, dso); } @@ -971,14 +971,14 @@ static struct dso *machine__get_kernel(struct machine *machine) vmlinux_name = symbol_conf.vmlinux_name; kernel = machine__findnew_kernel(machine, vmlinux_name, - "[kernel]", DSO_TYPE_KERNEL); + "[kernel]", DSO_SPACE__KERNEL); } else { if (symbol_conf.default_guest_vmlinux_name) vmlinux_name = symbol_conf.default_guest_vmlinux_name; kernel = machine__findnew_kernel(machine, vmlinux_name, "[guest.kernel]", - DSO_TYPE_GUEST_KERNEL); + DSO_SPACE__KERNEL_GUEST); } if (kernel != NULL && (!kernel->has_build_id)) @@ -1606,7 +1606,7 @@ static int machine__process_kernel_mmap_event(struct machine *machine, union perf_event *event) { struct map *map; - enum dso_kernel_type kernel_type; + enum dso_space_type dso_space; bool is_kernel_mmap; /* If we have maps from kcore then we do not need or want any others */ @@ -1614,9 +1614,9 @@ static int machine__process_kernel_mmap_event(struct machine *machine, return 0; if (machine__is_host(machine)) - kernel_type = DSO_TYPE_KERNEL; + dso_space = DSO_SPACE__KERNEL; else - kernel_type = DSO_TYPE_GUEST_KERNEL; + dso_space = DSO_SPACE__KERNEL_GUEST; is_kernel_mmap = memcmp(event->mmap.filename, machine->mmap_name, @@ -1676,7 +1676,7 @@ static int machine__process_kernel_mmap_event(struct machine *machine, if (kernel == NULL) goto out_problem; - kernel->kernel = kernel_type; + kernel->kernel = dso_space; if (__machine__create_kernel_maps(machine, kernel) < 0) { dso__put(kernel); goto out_problem; diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index f9dc8c5493ea..1d7210804639 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -486,7 +486,7 @@ u64 map__rip_2objdump(struct map *map, u64 rip) * kernel modules also have DSO_TYPE_USER in dso->kernel, * but all kernel modules are ET_REL, so won't get here. */ - if (map->dso->kernel == DSO_TYPE_USER) + if (map->dso->kernel == DSO_SPACE__USER) return rip + map->dso->text_offset; return map->unmap_ip(map, rip) - map->reloc; @@ -516,7 +516,7 @@ u64 map__objdump_2mem(struct map *map, u64 ip) * kernel modules also have DSO_TYPE_USER in dso->kernel, * but all kernel modules are ET_REL, so won't get here. */ - if (map->dso->kernel == DSO_TYPE_USER) + if (map->dso->kernel == DSO_SPACE__USER) return map->unmap_ip(map, ip - map->dso->text_offset); return ip + map->reloc; diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index 5e43054bffea..48716d216445 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -789,7 +789,7 @@ int symsrc__init(struct symsrc *ss, struct dso *dso, const char *name, if (ss->opdshdr.sh_type != SHT_PROGBITS) ss->opdsec = NULL; - if (dso->kernel == DSO_TYPE_USER) + if (dso->kernel == DSO_SPACE__USER) ss->adjust_symbols = true; else ss->adjust_symbols = elf__needs_adjust_symbols(ehdr); diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 053468ffcb8a..1f5fcb828a21 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -808,7 +808,7 @@ static int maps__split_kallsyms(struct maps *kmaps, struct dso *dso, u64 delta, if (strcmp(curr_map->dso->short_name, module)) { if (curr_map != initial_map && - dso->kernel == DSO_TYPE_GUEST_KERNEL && + dso->kernel == DSO_SPACE__KERNEL_GUEST && machine__is_default_guest(machine)) { /* * We assume all symbols of a module are @@ -865,7 +865,7 @@ static int maps__split_kallsyms(struct maps *kmaps, struct dso *dso, u64 delta, goto add_symbol; } - if (dso->kernel == DSO_TYPE_GUEST_KERNEL) + if (dso->kernel == DSO_SPACE__KERNEL_GUEST) snprintf(dso_name, sizeof(dso_name), "[guest.kernel].%d", kernel_range++); @@ -909,7 +909,7 @@ discard_symbol: } if (curr_map != initial_map && - dso->kernel == DSO_TYPE_GUEST_KERNEL && + dso->kernel == DSO_SPACE__KERNEL_GUEST && machine__is_default_guest(kmaps->machine)) { dso__set_loaded(curr_map->dso); } @@ -1387,7 +1387,7 @@ static int dso__load_kcore(struct dso *dso, struct map *map, * Set the data type and long name so that kcore can be read via * dso__data_read_addr(). */ - if (dso->kernel == DSO_TYPE_GUEST_KERNEL) + if (dso->kernel == DSO_SPACE__KERNEL_GUEST) dso->binary_type = DSO_BINARY_TYPE__GUEST_KCORE; else dso->binary_type = DSO_BINARY_TYPE__KCORE; @@ -1451,7 +1451,7 @@ int __dso__load_kallsyms(struct dso *dso, const char *filename, symbols__fixup_end(&dso->symbols); symbols__fixup_duplicate(&dso->symbols); - if (dso->kernel == DSO_TYPE_GUEST_KERNEL) + if (dso->kernel == DSO_SPACE__KERNEL_GUEST) dso->symtab_type = DSO_BINARY_TYPE__GUEST_KALLSYMS; else dso->symtab_type = DSO_BINARY_TYPE__KALLSYMS; @@ -1537,17 +1537,17 @@ static bool dso__is_compatible_symtab_type(struct dso *dso, bool kmod, case DSO_BINARY_TYPE__MIXEDUP_UBUNTU_DEBUGINFO: case DSO_BINARY_TYPE__BUILDID_DEBUGINFO: case DSO_BINARY_TYPE__OPENEMBEDDED_DEBUGINFO: - return !kmod && dso->kernel == DSO_TYPE_USER; + return !kmod && dso->kernel == DSO_SPACE__USER; case DSO_BINARY_TYPE__KALLSYMS: case DSO_BINARY_TYPE__VMLINUX: case DSO_BINARY_TYPE__KCORE: - return dso->kernel == DSO_TYPE_KERNEL; + return dso->kernel == DSO_SPACE__KERNEL; case DSO_BINARY_TYPE__GUEST_KALLSYMS: case DSO_BINARY_TYPE__GUEST_VMLINUX: case DSO_BINARY_TYPE__GUEST_KCORE: - return dso->kernel == DSO_TYPE_GUEST_KERNEL; + return dso->kernel == DSO_SPACE__KERNEL_GUEST; case DSO_BINARY_TYPE__GUEST_KMODULE: case DSO_BINARY_TYPE__GUEST_KMODULE_COMP: @@ -1650,9 +1650,9 @@ int dso__load(struct dso *dso, struct map *map) dso->symtab_type == DSO_BINARY_TYPE__GUEST_KMODULE_COMP; if (dso->kernel && !kmod) { - if (dso->kernel == DSO_TYPE_KERNEL) + if (dso->kernel == DSO_SPACE__KERNEL) ret = dso__load_kernel_sym(dso, map); - else if (dso->kernel == DSO_TYPE_GUEST_KERNEL) + else if (dso->kernel == DSO_SPACE__KERNEL_GUEST) ret = dso__load_guest_kernel_sym(dso, map); machine = map__kmaps(map)->machine; @@ -1882,7 +1882,7 @@ int dso__load_vmlinux(struct dso *dso, struct map *map, else symbol__join_symfs(symfs_vmlinux, vmlinux); - if (dso->kernel == DSO_TYPE_GUEST_KERNEL) + if (dso->kernel == DSO_SPACE__KERNEL_GUEST) symtab_type = DSO_BINARY_TYPE__GUEST_VMLINUX; else symtab_type = DSO_BINARY_TYPE__VMLINUX; @@ -1894,7 +1894,7 @@ int dso__load_vmlinux(struct dso *dso, struct map *map, symsrc__destroy(&ss); if (err > 0) { - if (dso->kernel == DSO_TYPE_GUEST_KERNEL) + if (dso->kernel == DSO_SPACE__KERNEL_GUEST) dso->binary_type = DSO_BINARY_TYPE__GUEST_VMLINUX; else dso->binary_type = DSO_BINARY_TYPE__VMLINUX; -- cgit v1.2.3-59-g8ed1b From b2fe96a350deb93d080ee7136b1e9fcf6cda83e2 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Sat, 8 Aug 2020 14:26:56 +0200 Subject: perf tools: Fix module symbol processing The 'dso->kernel' condition is true also for kernel modules now, and there are several places that were omited by the initial change: - we need to identify modules separately in dso__process_kernel_symbol - we need to set 'dso->kernel' for module from buildid table - there's no need to use 'dso->kernel || kmodule' in one condition Committer testing: Before: # perf test -v object Objdump command is: objdump -z -d --start-address=0xffffffff813e682f --stop-address=0xffffffff813e68af /usr/lib/debug/lib/modules/5.7.14-200.fc32.x86_64/vmlinux Bytes read match those read by objdump Reading object code for memory address: 0xffffffffc02dc257 File is: /lib/modules/5.7.14-200.fc32.x86_64/kernel/arch/x86/crypto/crc32c-intel.ko.xz On file address is: 0xffffffffc02dc2e7 dso__data_read_offset failed test child finished with -1 ---- end ---- Object code reading: FAILED! # After: # perf test object 26: Object code reading : Ok # perf test object 26: Object code reading : Ok # perf test object 26: Object code reading : Ok # perf test object 26: Object code reading : Ok # perf test object 26: Object code reading : Ok # Fixes: 02213cec64bb ("perf maps: Mark module DSOs with kernel type") Reported-by: Arnaldo Carvalho de Melo Tested-by: Arnaldo Carvalho de Melo Cc: Adrian Hunter Cc: Namhyung Kim Signed-off-by: Jiri Olsa --- tools/perf/util/header.c | 3 +-- tools/perf/util/symbol-elf.c | 6 +++--- 2 files changed, 4 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index e1db72c73e89..9cf4efdcbbbd 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -2090,9 +2090,8 @@ static int __event_process_build_id(struct perf_record_header_build_id *bev, if (!kmod_path__parse_name(&m, filename) && m.kmod) dso__set_module_info(dso, &m, machine); - else - dso->kernel = dso_space; + dso->kernel = dso_space; free(m.name); } diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index 48716d216445..8cc4b0059fb0 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -872,7 +872,7 @@ static int dso__process_kernel_symbol(struct dso *dso, struct map *map, * kallsyms and identity maps. Overwrite it to * map to the kernel dso. */ - if (*remap_kernel && dso->kernel) { + if (*remap_kernel && dso->kernel && !kmodule) { *remap_kernel = false; map->start = shdr->sh_addr + ref_reloc(kmap); map->end = map->start + shdr->sh_size; @@ -1068,7 +1068,7 @@ int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *syms_ss, * Initial kernel and module mappings do not map to the dso. * Flag the fixups. */ - if (dso->kernel || kmodule) { + if (dso->kernel) { remap_kernel = true; adjust_kernel_syms = dso->adjust_symbols; } @@ -1130,7 +1130,7 @@ int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *syms_ss, (sym.st_value & 1)) --sym.st_value; - if (dso->kernel || kmodule) { + if (dso->kernel) { if (dso__process_kernel_symbol(dso, map, &sym, &shdr, kmaps, kmap, &curr_dso, &curr_map, section_name, adjust_kernel_syms, kmodule, &remap_kernel)) goto out_elf_end; -- cgit v1.2.3-59-g8ed1b From fa5c893181ed2ca2f96552f50073786d2cfce6c0 Mon Sep 17 00:00:00 2001 From: Daniel Díaz Date: Wed, 12 Aug 2020 17:15:17 -0500 Subject: tools build feature: Quote CC and CXX for their arguments MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When using a cross-compilation environment, such as OpenEmbedded, the CC an CXX variables are set to something more than just a command: there are arguments (such as --sysroot) that need to be passed on to the compiler so that the right set of headers and libraries are used. For the particular case that our systems detected, CC is set to the following: export CC="aarch64-linaro-linux-gcc --sysroot=/oe/build/tmp/work/machine/perf/1.0-r9/recipe-sysroot" Without quotes, detection is as follows: Auto-detecting system features: ... dwarf: [ OFF ] ... dwarf_getlocations: [ OFF ] ... glibc: [ OFF ] ... gtk2: [ OFF ] ... libbfd: [ OFF ] ... libcap: [ OFF ] ... libelf: [ OFF ] ... libnuma: [ OFF ] ... numa_num_possible_cpus: [ OFF ] ... libperl: [ OFF ] ... libpython: [ OFF ] ... libcrypto: [ OFF ] ... libunwind: [ OFF ] ... libdw-dwarf-unwind: [ OFF ] ... zlib: [ OFF ] ... lzma: [ OFF ] ... get_cpuid: [ OFF ] ... bpf: [ OFF ] ... libaio: [ OFF ] ... libzstd: [ OFF ] ... disassembler-four-args: [ OFF ] Makefile.config:414: *** No gnu/libc-version.h found, please install glibc-dev[el]. Stop. Makefile.perf:230: recipe for target 'sub-make' failed make[1]: *** [sub-make] Error 2 Makefile:69: recipe for target 'all' failed make: *** [all] Error 2 With CC and CXX quoted, some of those features are now detected. Fixes: e3232c2f39ac ("tools build feature: Use CC and CXX from parent") Signed-off-by: Daniel Díaz Reviewed-by: Thomas Hebb Cc: Alexei Starovoitov Cc: Andrii Nakryiko Cc: Daniel Borkmann Cc: Jiri Olsa Cc: John Fastabend Cc: KP Singh Cc: Martin KaFai Lau Cc: Namhyung Kim Cc: Song Liu Cc: Stephane Eranian Cc: Yonghong Song Link: http://lore.kernel.org/lkml/20200812221518.2869003-1-daniel.diaz@linaro.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/build/Makefile.feature | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature index 774f0b0ca28a..e7818b44b48e 100644 --- a/tools/build/Makefile.feature +++ b/tools/build/Makefile.feature @@ -8,7 +8,7 @@ endif feature_check = $(eval $(feature_check_code)) define feature_check_code - feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CC=$(CC) CXX=$(CXX) CFLAGS="$(EXTRA_CFLAGS) $(FEATURE_CHECK_CFLAGS-$(1))" CXXFLAGS="$(EXTRA_CXXFLAGS) $(FEATURE_CHECK_CXXFLAGS-$(1))" LDFLAGS="$(LDFLAGS) $(FEATURE_CHECK_LDFLAGS-$(1))" -C $(feature_dir) $(OUTPUT_FEATURES)test-$1.bin >/dev/null 2>/dev/null && echo 1 || echo 0) + feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CC="$(CC)" CXX="$(CXX)" CFLAGS="$(EXTRA_CFLAGS) $(FEATURE_CHECK_CFLAGS-$(1))" CXXFLAGS="$(EXTRA_CXXFLAGS) $(FEATURE_CHECK_CXXFLAGS-$(1))" LDFLAGS="$(LDFLAGS) $(FEATURE_CHECK_LDFLAGS-$(1))" -C $(feature_dir) $(OUTPUT_FEATURES)test-$1.bin >/dev/null 2>/dev/null && echo 1 || echo 0) endef feature_set = $(eval $(feature_set_code)) -- cgit v1.2.3-59-g8ed1b From 509f68e327d0c87e9bc93cb138e445c506ae9ce9 Mon Sep 17 00:00:00 2001 From: Alexander Gordeev Date: Thu, 13 Aug 2020 13:30:42 +0200 Subject: perf bench numa: Fix cpumask memory leak in node_has_cpus() Couple numa_allocate_cpumask() and numa_free_cpumask() functions Signed-off-by: Alexander Gordeev Reviewed-by: Srikar Dronamraju Cc: Alexander Shishkin Cc: Balamuruhan S Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Naveen N. Rao Cc: Peter Zijlstra Cc: Satheesh Rajendran Link: http://lore.kernel.org/lkml/20200813113041.GA1685@oc3871087118.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/bench/numa.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/perf/bench/numa.c b/tools/perf/bench/numa.c index 31e2601d39c8..9066511aed47 100644 --- a/tools/perf/bench/numa.c +++ b/tools/perf/bench/numa.c @@ -248,16 +248,21 @@ static int is_node_present(int node) static bool node_has_cpus(int node) { struct bitmask *cpu = numa_allocate_cpumask(); + bool ret = false; /* fall back to nocpus */ unsigned int i; - if (cpu && !numa_node_to_cpus(node, cpu)) { + BUG_ON(!cpu); + if (!numa_node_to_cpus(node, cpu)) { for (i = 0; i < cpu->size; i++) { - if (numa_bitmask_isbitset(cpu, i)) - return true; + if (numa_bitmask_isbitset(cpu, i)) { + ret = true; + break; + } } } + numa_free_cpumask(cpu); - return false; /* lets fall back to nocpus safely */ + return ret; } static cpu_set_t bind_to_cpu(int target_cpu) -- cgit v1.2.3-59-g8ed1b From 2db13a9b30f7e438777eb1a462c4b055ba948b89 Mon Sep 17 00:00:00 2001 From: Alexander Gordeev Date: Thu, 13 Aug 2020 13:32:48 +0200 Subject: perf bench numa: Use numa_node_to_cpus() to bind tasks to nodes It is currently assumed that each node contains at most nr_cpus/nr_nodes CPUs and nodes' CPU ranges do not overlap. That assumption is generally incorrect as there are archs where a CPU number does not depend on to its node number. This update removes the described assumption by simply calling numa_node_to_cpus() interface and using the returned mask for binding CPUs to nodes. Also, variable types and names made consistent in functions using cpumask. Signed-off-by: Alexander Gordeev Reviewed-by: Srikar Dronamraju Cc: Alexander Shishkin Cc: Balamuruhan S Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Naveen N. Rao Cc: Peter Zijlstra Cc: Satheesh Rajendran Link: http://lore.kernel.org/lkml/20200813113247.GA2014@oc3871087118.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/bench/numa.c | 33 ++++++++++++++++----------------- 1 file changed, 16 insertions(+), 17 deletions(-) (limited to 'tools') diff --git a/tools/perf/bench/numa.c b/tools/perf/bench/numa.c index 9066511aed47..6d5c890478cb 100644 --- a/tools/perf/bench/numa.c +++ b/tools/perf/bench/numa.c @@ -247,20 +247,20 @@ static int is_node_present(int node) */ static bool node_has_cpus(int node) { - struct bitmask *cpu = numa_allocate_cpumask(); + struct bitmask *cpumask = numa_allocate_cpumask(); bool ret = false; /* fall back to nocpus */ - unsigned int i; + int cpu; - BUG_ON(!cpu); - if (!numa_node_to_cpus(node, cpu)) { - for (i = 0; i < cpu->size; i++) { - if (numa_bitmask_isbitset(cpu, i)) { + BUG_ON(!cpumask); + if (!numa_node_to_cpus(node, cpumask)) { + for (cpu = 0; cpu < (int)cpumask->size; cpu++) { + if (numa_bitmask_isbitset(cpumask, cpu)) { ret = true; break; } } } - numa_free_cpumask(cpu); + numa_free_cpumask(cpumask); return ret; } @@ -293,14 +293,10 @@ static cpu_set_t bind_to_cpu(int target_cpu) static cpu_set_t bind_to_node(int target_node) { - int cpus_per_node = g->p.nr_cpus / nr_numa_nodes(); cpu_set_t orig_mask, mask; int cpu; int ret; - BUG_ON(cpus_per_node * nr_numa_nodes() != g->p.nr_cpus); - BUG_ON(!cpus_per_node); - ret = sched_getaffinity(0, sizeof(orig_mask), &orig_mask); BUG_ON(ret); @@ -310,13 +306,16 @@ static cpu_set_t bind_to_node(int target_node) for (cpu = 0; cpu < g->p.nr_cpus; cpu++) CPU_SET(cpu, &mask); } else { - int cpu_start = (target_node + 0) * cpus_per_node; - int cpu_stop = (target_node + 1) * cpus_per_node; - - BUG_ON(cpu_stop > g->p.nr_cpus); + struct bitmask *cpumask = numa_allocate_cpumask(); - for (cpu = cpu_start; cpu < cpu_stop; cpu++) - CPU_SET(cpu, &mask); + BUG_ON(!cpumask); + if (!numa_node_to_cpus(target_node, cpumask)) { + for (cpu = 0; cpu < (int)cpumask->size; cpu++) { + if (numa_bitmask_isbitset(cpumask, cpu)) + CPU_SET(cpu, &mask); + } + } + numa_free_cpumask(cpumask); } ret = sched_setaffinity(0, sizeof(mask), &mask); -- cgit v1.2.3-59-g8ed1b From eb6d31ae22d7767789e3c079444157ea40114884 Mon Sep 17 00:00:00 2001 From: Changbin Du Date: Sat, 8 Aug 2020 10:31:24 +0800 Subject: perf ftrace: Select function/function_graph tracer automatically The '-g/-G' options have already implied function_graph tracer should be used instead of function tracer. So we don't need extra option '--tracer' in this case. This patch changes the behavior as below: - If '-g' or '-G' option is on, then function_graph tracer is used. - If '-T' or '-N' option is on, then function tracer is used. - The function_graph has priority over function tracer. - The option '--tracer' only take effect if neither -g/-G nor -T/-N is specified. Here are some examples. This will start tracing all functions using default tracer: $ sudo perf ftrace This will trace all functions using function graph tracer: $ sudo perf ftrace -G '*' This will trace function vfs_read using function graph tracer: $ sudo perf ftrace -G vfs_read This will trace function vfs_read using function tracer: $ sudo perf ftrace -T vfs_read Committer notes: Using '-h -G' will tell what that option is about, so to further clarify the above examples: # perf ftrace -h -G -G, --graph-funcs Set graph filter on given functions # perf ftrace -h -g -g, --nograph-funcs Set nograph filter on given functions # perf ftrace -h -T -T, --trace-funcs trace given functions only # perf ftrace -h -N -N, --notrace-funcs do not trace given functions # Signed-off-by: Changbin Du Tested-by: Arnaldo Carvalho de Melo Acked-by: Namhyung Kim Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Steven Rostedt (VMware) Link: http://lore.kernel.org/lkml/20200808023141.14227-2-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-config.txt | 5 ++-- tools/perf/Documentation/perf-ftrace.txt | 41 +++++++++++++++++--------------- tools/perf/builtin-ftrace.c | 25 +++++++++++++++++-- 3 files changed, 48 insertions(+), 23 deletions(-) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt index c7d3df5798e2..76408d986aed 100644 --- a/tools/perf/Documentation/perf-config.txt +++ b/tools/perf/Documentation/perf-config.txt @@ -614,8 +614,9 @@ trace.*:: ftrace.*:: ftrace.tracer:: - Can be used to select the default tracer. Possible values are - 'function' and 'function_graph'. + Can be used to select the default tracer when neither -G nor + -F option is not specified. Possible values are 'function' and + 'function_graph'. llvm.*:: llvm.clang-path:: diff --git a/tools/perf/Documentation/perf-ftrace.txt b/tools/perf/Documentation/perf-ftrace.txt index b80c84307dc9..821d4d334a09 100644 --- a/tools/perf/Documentation/perf-ftrace.txt +++ b/tools/perf/Documentation/perf-ftrace.txt @@ -24,7 +24,8 @@ OPTIONS -t:: --tracer=:: - Tracer to use: function_graph or function. + Tracer to use when neither -G nor -F option is not + specified: function_graph or function. -v:: --verbose=:: @@ -50,33 +51,35 @@ OPTIONS -T:: --trace-funcs=:: - Only trace functions given by the argument. Multiple functions - can be given by using this option more than once. The function - argument also can be a glob pattern. It will be passed to - 'set_ftrace_filter' in tracefs. + Select function tracer and set function filter on the given + function (or a glob pattern). Multiple functions can be given + by using this option more than once. The function argument also + can be a glob pattern. It will be passed to 'set_ftrace_filter' + in tracefs. -N:: --notrace-funcs=:: - Do not trace functions given by the argument. Like -T option, - this can be used more than once to specify multiple functions - (or glob patterns). It will be passed to 'set_ftrace_notrace' - in tracefs. + Select function tracer and do not trace functions given by the + argument. Like -T option, this can be used more than once to + specify multiple functions (or glob patterns). It will be + passed to 'set_ftrace_notrace' in tracefs. -G:: --graph-funcs=:: - Set graph filter on the given function (or a glob pattern). - This is useful for the function_graph tracer only and enables - tracing for functions executed from the given function. - This can be used more than once to specify multiple functions. - It will be passed to 'set_graph_function' in tracefs. + Select function_graph tracer and set graph filter on the given + function (or a glob pattern). This is useful to trace for + functions executed from the given function. This can be used more + than once to specify multiple functions. It will be passed to + 'set_graph_function' in tracefs. -g:: --nograph-funcs=:: - Set graph notrace filter on the given function (or a glob pattern). - Like -G option, this is useful for the function_graph tracer only - and disables tracing for function executed from the given function. - This can be used more than once to specify multiple functions. - It will be passed to 'set_graph_notrace' in tracefs. + Select function_graph tracer and set graph notrace filter on the + given function (or a glob pattern). Like -G option, this is useful + for the function_graph tracer only and disables tracing for function + executed from the given function. This can be used more than once to + specify multiple functions. It will be passed to 'set_graph_notrace' + in tracefs. -D:: --graph-depth=:: diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index 2bfc1b0db536..048a11192b59 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -455,6 +455,23 @@ static void delete_filter_func(struct list_head *head) } } +static void select_tracer(struct perf_ftrace *ftrace) +{ + bool graph = !list_empty(&ftrace->graph_funcs) || + !list_empty(&ftrace->nograph_funcs); + bool func = !list_empty(&ftrace->filters) || + !list_empty(&ftrace->notrace); + + /* The function_graph has priority over function tracer. */ + if (graph) + ftrace->tracer = "function_graph"; + else if (func) + ftrace->tracer = "function"; + /* Otherwise, the default tracer is used. */ + + pr_debug("%s tracer is used\n", ftrace->tracer); +} + int cmd_ftrace(int argc, const char **argv) { int ret; @@ -479,11 +496,13 @@ int cmd_ftrace(int argc, const char **argv) OPT_STRING('C', "cpu", &ftrace.target.cpu_list, "cpu", "list of cpus to monitor"), OPT_CALLBACK('T', "trace-funcs", &ftrace.filters, "func", - "trace given functions only", parse_filter_func), + "trace given functions using function tracer", + parse_filter_func), OPT_CALLBACK('N', "notrace-funcs", &ftrace.notrace, "func", "do not trace given functions", parse_filter_func), OPT_CALLBACK('G', "graph-funcs", &ftrace.graph_funcs, "func", - "Set graph filter on given functions", parse_filter_func), + "trace given functions using function_graph tracer", + parse_filter_func), OPT_CALLBACK('g', "nograph-funcs", &ftrace.nograph_funcs, "func", "Set nograph filter on given functions", parse_filter_func), OPT_INTEGER('D', "graph-depth", &ftrace.graph_depth, @@ -505,6 +524,8 @@ int cmd_ftrace(int argc, const char **argv) if (!argc && target__none(&ftrace.target)) ftrace.target.system_wide = true; + select_tracer(&ftrace); + ret = target__validate(&ftrace.target); if (ret) { char errbuf[512]; -- cgit v1.2.3-59-g8ed1b From d6d81bfe429ee7e3e59388d16741b354a2484f0f Mon Sep 17 00:00:00 2001 From: Changbin Du Date: Sat, 8 Aug 2020 10:31:25 +0800 Subject: perf ftrace: Add option '-F/--funcs' to list available functions This adds an option '-F/--funcs' to list all available functions to trace, which is read from tracing file 'available_filter_functions'. $ sudo ./perf ftrace -F | head trace_initcall_finish_cb initcall_blacklisted do_one_initcall do_one_initcall trace_initcall_start_cb run_init_process try_to_run_init_process match_dev_by_label match_dev_by_uuid rootfs_init_fs_context $ Committer notes: This is the same command line option and for the same purpose as in 'perf probe'. Signed-off-by: Changbin Du Tested-by: Arnaldo Carvalho de Melo Acked-by: Namhyung Kim Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Steven Rostedt (VMware) Link: http://lore.kernel.org/lkml/20200808023141.14227-3-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-ftrace.txt | 4 +++ tools/perf/builtin-ftrace.c | 46 ++++++++++++++++++++++++++++++++ 2 files changed, 50 insertions(+) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-ftrace.txt b/tools/perf/Documentation/perf-ftrace.txt index 821d4d334a09..4f5628445a63 100644 --- a/tools/perf/Documentation/perf-ftrace.txt +++ b/tools/perf/Documentation/perf-ftrace.txt @@ -31,6 +31,10 @@ OPTIONS --verbose=:: Verbosity level. +-F:: +--funcs:: + List all available functions to trace. + -p:: --pid=:: Trace on existing process id (comma separated list). diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index 048a11192b59..1ebf71ecc1a8 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -33,6 +33,7 @@ struct perf_ftrace { struct evlist *evlist; struct target target; const char *tracer; + bool list_avail_functions; struct list_head filters; struct list_head notrace; struct list_head graph_funcs; @@ -128,6 +129,46 @@ static int append_tracing_file(const char *name, const char *val) return __write_tracing_file(name, val, true); } +static int read_tracing_file_to_stdout(const char *name) +{ + char buf[4096]; + char *file; + int fd; + int ret = -1; + + file = get_tracing_file(name); + if (!file) { + pr_debug("cannot get tracing file: %s\n", name); + return -1; + } + + fd = open(file, O_RDONLY); + if (fd < 0) { + pr_debug("cannot open tracing file: %s: %s\n", + name, str_error_r(errno, buf, sizeof(buf))); + goto out; + } + + /* read contents to stdout */ + while (true) { + int n = read(fd, buf, sizeof(buf)); + if (n == 0) + break; + else if (n < 0) + goto out_close; + + if (fwrite(buf, n, 1, stdout) != 1) + goto out_close; + } + ret = 0; + +out_close: + close(fd); +out: + put_tracing_file(file); + return ret; +} + static int reset_tracing_cpu(void); static void reset_tracing_filters(void); @@ -302,6 +343,9 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) signal(SIGCHLD, sig_handler); signal(SIGPIPE, sig_handler); + if (ftrace->list_avail_functions) + return read_tracing_file_to_stdout("available_filter_functions"); + if (reset_tracing_files(ftrace) < 0) { pr_err("failed to reset ftrace\n"); goto out; @@ -487,6 +531,8 @@ int cmd_ftrace(int argc, const char **argv) const struct option ftrace_options[] = { OPT_STRING('t', "tracer", &ftrace.tracer, "tracer", "tracer to use: function_graph(default) or function"), + OPT_BOOLEAN('F', "funcs", &ftrace.list_avail_functions, + "Show available functions to filter"), OPT_STRING('p', "pid", &ftrace.target.pid, "pid", "trace on existing process id"), OPT_INCR('v', "verbose", &verbose, -- cgit v1.2.3-59-g8ed1b From 68faab0f934d83d374b3d696d861d8502641fa19 Mon Sep 17 00:00:00 2001 From: Changbin Du Date: Sat, 8 Aug 2020 10:31:26 +0800 Subject: perf ftrace: Factor out function write_tracing_file_int() We will reuse this function later. Signed-off-by: Changbin Du Acked-by: Namhyung Kim Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Steven Rostedt (VMware) Link: http://lore.kernel.org/lkml/20200808023141.14227-4-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-ftrace.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index 1ebf71ecc1a8..4b3fcee5725a 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -169,6 +169,17 @@ out: return ret; } +static int write_tracing_file_int(const char *name, int value) +{ + char buf[16]; + + snprintf(buf, sizeof(buf), "%d", value); + if (write_tracing_file(name, buf) < 0) + return -1; + + return 0; +} + static int reset_tracing_cpu(void); static void reset_tracing_filters(void); @@ -299,8 +310,6 @@ static void reset_tracing_filters(void) static int set_tracing_depth(struct perf_ftrace *ftrace) { - char buf[16]; - if (ftrace->graph_depth == 0) return 0; @@ -309,9 +318,7 @@ static int set_tracing_depth(struct perf_ftrace *ftrace) return -1; } - snprintf(buf, sizeof(buf), "%d", ftrace->graph_depth); - - if (write_tracing_file("max_graph_depth", buf) < 0) + if (write_tracing_file_int("max_graph_depth", ftrace->graph_depth) < 0) return -1; return 0; -- cgit v1.2.3-59-g8ed1b From 846e1939801a0893ea71a6a56d8dbe2bf46682d1 Mon Sep 17 00:00:00 2001 From: Changbin Du Date: Sat, 8 Aug 2020 10:31:27 +0800 Subject: perf ftrace: Add option '-m/--buffer-size' to set per-cpu buffer size This adds an option '-m/--buffer-size' to allow us set the size of per-cpu tracing buffer. Committer testing: Before running with this option: # find /sys/kernel/tracing/ -name buffer_size_kb | xargs cat 1408 1408 1408 1408 1408 1408 1408 1408 1408 # Then, run: # perf ftrace -m 2048K | head -10 2) | mutex_unlock() { 2) ==========> | 2) | smp_irq_work_interrupt() { 2) | irq_enter() { 2) 0.121 us | rcu_irq_enter(); 2) 0.128 us | irqtime_account_irq(); 2) 0.719 us | } 2) | __wake_up() { 2) | __wake_up_common_lock() { 2) 0.105 us | _raw_spin_lock_irqsave(); # Now look at those tracefs knobs: # find /sys/kernel/tracing/ -name buffer_size_kb | xargs cat 2048 2048 2048 2048 2048 2048 2048 2048 2048 # This should be similar to the -m option in the other perf tools, such as 'perf record', 'perf trace', etc. Signed-off-by: Changbin Du Acked-by: Namhyung Kim Tested-by: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Steven Rostedt (VMware) Link: http://lore.kernel.org/lkml/20200808023141.14227-5-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-ftrace.txt | 5 +++ tools/perf/builtin-ftrace.c | 55 ++++++++++++++++++++++++++++++++ 2 files changed, 60 insertions(+) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-ftrace.txt b/tools/perf/Documentation/perf-ftrace.txt index 4f5628445a63..7a5d915f60b0 100644 --- a/tools/perf/Documentation/perf-ftrace.txt +++ b/tools/perf/Documentation/perf-ftrace.txt @@ -53,6 +53,11 @@ OPTIONS Ranges of CPUs are specified with -: 0-2. Default is to trace on all online CPUs. +-m:: +--buffer-size:: + Set the size of per-cpu tracing buffer, is expected to + be a number with appended unit character - B/K/M/G. + -T:: --trace-funcs=:: Select function tracer and set function filter on the given diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index 4b3fcee5725a..a3a4f4be9dde 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -26,6 +26,7 @@ #include "thread_map.h" #include "util/cap.h" #include "util/config.h" +#include "util/units.h" #define DEFAULT_TRACER "function_graph" @@ -39,6 +40,7 @@ struct perf_ftrace { struct list_head graph_funcs; struct list_head nograph_funcs; int graph_depth; + unsigned long percpu_buffer_size; }; struct filter_entry { @@ -324,6 +326,21 @@ static int set_tracing_depth(struct perf_ftrace *ftrace) return 0; } +static int set_tracing_percpu_buffer_size(struct perf_ftrace *ftrace) +{ + int ret; + + if (ftrace->percpu_buffer_size == 0) + return 0; + + ret = write_tracing_file_int("buffer_size_kb", + ftrace->percpu_buffer_size / 1024); + if (ret < 0) + return ret; + + return 0; +} + static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) { char *trace_file; @@ -388,6 +405,11 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) goto out_reset; } + if (set_tracing_percpu_buffer_size(ftrace) < 0) { + pr_err("failed to set tracing per-cpu buffer size\n"); + goto out_reset; + } + if (write_tracing_file("current_tracer", ftrace->tracer) < 0) { pr_err("failed to set current_tracer to %s\n", ftrace->tracer); goto out_reset; @@ -506,6 +528,37 @@ static void delete_filter_func(struct list_head *head) } } +static int parse_buffer_size(const struct option *opt, + const char *str, int unset) +{ + unsigned long *s = (unsigned long *)opt->value; + static struct parse_tag tags_size[] = { + { .tag = 'B', .mult = 1 }, + { .tag = 'K', .mult = 1 << 10 }, + { .tag = 'M', .mult = 1 << 20 }, + { .tag = 'G', .mult = 1 << 30 }, + { .tag = 0 }, + }; + unsigned long val; + + if (unset) { + *s = 0; + return 0; + } + + val = parse_tag_value(str, tags_size); + if (val != (unsigned long) -1) { + if (val < 1024) { + pr_err("buffer size too small, must larger than 1KB."); + return -1; + } + *s = val; + return 0; + } + + return -1; +} + static void select_tracer(struct perf_ftrace *ftrace) { bool graph = !list_empty(&ftrace->graph_funcs) || @@ -560,6 +613,8 @@ int cmd_ftrace(int argc, const char **argv) "Set nograph filter on given functions", parse_filter_func), OPT_INTEGER('D', "graph-depth", &ftrace.graph_depth, "Max depth for function graph tracer"), + OPT_CALLBACK('m', "buffer-size", &ftrace.percpu_buffer_size, "size", + "size of per cpu buffer", parse_buffer_size), OPT_END() }; -- cgit v1.2.3-59-g8ed1b From 81523c1e579bb95106e22b864fbef687d585f2b9 Mon Sep 17 00:00:00 2001 From: Changbin Du Date: Sat, 8 Aug 2020 10:31:28 +0800 Subject: perf ftrace: Show trace column header This makes 'perf ftrace' display column header before printing trace. $ sudo perf ftrace # tracer: function # # entries-in-buffer/entries-written: 0/0 #P:8 # # TASK-PID CPU# TIMESTAMP FUNCTION # | | | | | <...>-9246 [006] 10726.262760: mutex_unlock <-rb_simple_write <...>-9246 [006] 10726.262764: __fsnotify_parent <-vfs_write <...>-9246 [006] 10726.262765: fsnotify <-vfs_write <...>-9246 [006] 10726.262766: __sb_end_write <-vfs_write <...>-9246 [006] 10726.262767: fpregs_assert_state_consistent <-do_syscall_64 Signed-off-by: Changbin Du Acked-by: Namhyung Kim Tested-by: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Steven Rostedt (VMware) Link: http://lore.kernel.org/lkml/20200808023141.14227-6-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-ftrace.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'tools') diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index a3a4f4be9dde..39c694be2b71 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -435,6 +435,9 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) fcntl(trace_fd, F_SETFL, O_NONBLOCK); pollfd.fd = trace_fd; + /* display column headers */ + read_tracing_file_to_stdout("trace"); + if (write_tracing_file("tracing_on", "1") < 0) { pr_err("can't enable tracing\n"); goto out_close_fd; -- cgit v1.2.3-59-g8ed1b From 5b34747238686021a39495f7ae0bfadc27fe3e83 Mon Sep 17 00:00:00 2001 From: Changbin Du Date: Sat, 8 Aug 2020 10:31:29 +0800 Subject: perf ftrace: Add option '--inherit' to trace children processes This adds an option '--inherit' to allow us trace children processes spawned by our target. Signed-off-by: Changbin Du Acked-by: Namhyung Kim Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Steven Rostedt (VMware) Link: http://lore.kernel.org/lkml/20200808023141.14227-7-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-ftrace.txt | 3 +++ tools/perf/builtin-ftrace.c | 38 ++++++++++++++++++++++++++++++++ 2 files changed, 41 insertions(+) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-ftrace.txt b/tools/perf/Documentation/perf-ftrace.txt index 7a5d915f60b0..c46d0a09b38c 100644 --- a/tools/perf/Documentation/perf-ftrace.txt +++ b/tools/perf/Documentation/perf-ftrace.txt @@ -58,6 +58,9 @@ OPTIONS Set the size of per-cpu tracing buffer, is expected to be a number with appended unit character - B/K/M/G. +--inherit:: + Trace children processes spawned by our target. + -T:: --trace-funcs=:: Select function tracer and set function filter on the given diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index 39c694be2b71..07b81d0c1658 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -41,6 +41,7 @@ struct perf_ftrace { struct list_head nograph_funcs; int graph_depth; unsigned long percpu_buffer_size; + bool inherit; }; struct filter_entry { @@ -182,9 +183,27 @@ static int write_tracing_file_int(const char *name, int value) return 0; } +static int write_tracing_option_file(const char *name, const char *val) +{ + char *file; + int ret; + + if (asprintf(&file, "options/%s", name) < 0) + return -1; + + ret = __write_tracing_file(file, val, false); + free(file); + return ret; +} + static int reset_tracing_cpu(void); static void reset_tracing_filters(void); +static void reset_tracing_options(struct perf_ftrace *ftrace __maybe_unused) +{ + write_tracing_option_file("function-fork", "0"); +} + static int reset_tracing_files(struct perf_ftrace *ftrace __maybe_unused) { if (write_tracing_file("tracing_on", "0") < 0) @@ -203,6 +222,7 @@ static int reset_tracing_files(struct perf_ftrace *ftrace __maybe_unused) return -1; reset_tracing_filters(); + reset_tracing_options(ftrace); return 0; } @@ -341,6 +361,17 @@ static int set_tracing_percpu_buffer_size(struct perf_ftrace *ftrace) return 0; } +static int set_tracing_trace_inherit(struct perf_ftrace *ftrace) +{ + if (!ftrace->inherit) + return 0; + + if (write_tracing_option_file("function-fork", "1") < 0) + return -1; + + return 0; +} + static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) { char *trace_file; @@ -410,6 +441,11 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) goto out_reset; } + if (set_tracing_trace_inherit(ftrace) < 0) { + pr_err("failed to set tracing option function-fork\n"); + goto out_reset; + } + if (write_tracing_file("current_tracer", ftrace->tracer) < 0) { pr_err("failed to set current_tracer to %s\n", ftrace->tracer); goto out_reset; @@ -618,6 +654,8 @@ int cmd_ftrace(int argc, const char **argv) "Max depth for function graph tracer"), OPT_CALLBACK('m', "buffer-size", &ftrace.percpu_buffer_size, "size", "size of per cpu buffer", parse_buffer_size), + OPT_BOOLEAN(0, "inherit", &ftrace.inherit, + "trace children processes"), OPT_END() }; -- cgit v1.2.3-59-g8ed1b From a80abe2a9a8a420b4dd88713ba0ad3c163e7a79b Mon Sep 17 00:00:00 2001 From: Changbin Du Date: Sat, 8 Aug 2020 10:31:30 +0800 Subject: perf tools: Add general function to parse sublevel options This factors out a general function perf_parse_sublevel_options() to parse sublevel options. The 'sublevel' options is something like the '--debug' options which allow more sublevel options. Signed-off-by: Changbin Du Acked-by: Namhyung Kim Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Steven Rostedt (VMware) Link: http://lore.kernel.org/lkml/20200808023141.14227-8-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/Build | 1 + tools/perf/util/debug.c | 61 ++++++++-------------------- tools/perf/util/parse-sublevel-options.c | 70 ++++++++++++++++++++++++++++++++ tools/perf/util/parse-sublevel-options.h | 11 +++++ 4 files changed, 99 insertions(+), 44 deletions(-) create mode 100644 tools/perf/util/parse-sublevel-options.c create mode 100644 tools/perf/util/parse-sublevel-options.h (limited to 'tools') diff --git a/tools/perf/util/Build b/tools/perf/util/Build index 494626e303f5..cd5e41960e64 100644 --- a/tools/perf/util/Build +++ b/tools/perf/util/Build @@ -117,6 +117,7 @@ endif perf-y += parse-branch-options.o perf-y += dump-insn.o perf-y += parse-regs-options.o +perf-y += parse-sublevel-options.o perf-y += term.o perf-y += help-unknown-cmd.o perf-y += mem-events.o diff --git a/tools/perf/util/debug.c b/tools/perf/util/debug.c index adb656745ecc..5cda5565777a 100644 --- a/tools/perf/util/debug.c +++ b/tools/perf/util/debug.c @@ -20,6 +20,7 @@ #include "target.h" #include "ui/helpline.h" #include "ui/ui.h" +#include "util/parse-sublevel-options.h" #include @@ -173,65 +174,37 @@ void trace_event(union perf_event *event) trace_event_printer, event); } -static struct debug_variable { - const char *name; - int *ptr; -} debug_variables[] = { - { .name = "verbose", .ptr = &verbose }, - { .name = "ordered-events", .ptr = &debug_ordered_events}, - { .name = "stderr", .ptr = &redirect_to_stderr}, - { .name = "data-convert", .ptr = &debug_data_convert }, - { .name = "perf-event-open", .ptr = &debug_peo_args }, +static struct sublevel_option debug_opts[] = { + { .name = "verbose", .value_ptr = &verbose }, + { .name = "ordered-events", .value_ptr = &debug_ordered_events}, + { .name = "stderr", .value_ptr = &redirect_to_stderr}, + { .name = "data-convert", .value_ptr = &debug_data_convert }, + { .name = "perf-event-open", .value_ptr = &debug_peo_args }, { .name = NULL, } }; int perf_debug_option(const char *str) { - struct debug_variable *var = &debug_variables[0]; - char *vstr, *s = strdup(str); - int v = 1; - - vstr = strchr(s, '='); - if (vstr) - *vstr++ = 0; - - while (var->name) { - if (!strcmp(s, var->name)) - break; - var++; - } - - if (!var->name) { - pr_err("Unknown debug variable name '%s'\n", s); - free(s); - return -1; - } + int ret; - if (vstr) { - v = atoi(vstr); - /* - * Allow only values in range (0, 10), - * otherwise set 0. - */ - v = (v < 0) || (v > 10) ? 0 : v; - } + ret = perf_parse_sublevel_options(str, debug_opts); + if (ret) + return ret; - if (quiet) - v = -1; + /* Allow only verbose value in range (0, 10), otherwise set 0. */ + verbose = (verbose < 0) || (verbose > 10) ? 0 : verbose; - *var->ptr = v; - free(s); return 0; } int perf_quiet_option(void) { - struct debug_variable *var = &debug_variables[0]; + struct sublevel_option *opt = &debug_opts[0]; /* disable all debug messages */ - while (var->name) { - *var->ptr = -1; - var++; + while (opt->name) { + *opt->value_ptr = -1; + opt++; } return 0; diff --git a/tools/perf/util/parse-sublevel-options.c b/tools/perf/util/parse-sublevel-options.c new file mode 100644 index 000000000000..a841d17ffd57 --- /dev/null +++ b/tools/perf/util/parse-sublevel-options.c @@ -0,0 +1,70 @@ +#include +#include +#include +#include + +#include "util/debug.h" +#include "util/parse-sublevel-options.h" + +static int parse_one_sublevel_option(const char *str, + struct sublevel_option *opts) +{ + struct sublevel_option *opt = opts; + char *vstr, *s = strdup(str); + int v = 1; + + if (!s) { + pr_err("no memory\n"); + return -1; + } + + vstr = strchr(s, '='); + if (vstr) + *vstr++ = 0; + + while (opt->name) { + if (!strcmp(s, opt->name)) + break; + opt++; + } + + if (!opt->name) { + pr_err("Unknown option name '%s'\n", s); + free(s); + return -1; + } + + if (vstr) + v = atoi(vstr); + + *opt->value_ptr = v; + free(s); + return 0; +} + +/* parse options like --foo a=,b,c... */ +int perf_parse_sublevel_options(const char *str, struct sublevel_option *opts) +{ + char *s = strdup(str); + char *p = NULL; + int ret; + + if (!s) { + pr_err("no memory\n"); + return -1; + } + + p = strtok(s, ","); + while (p) { + ret = parse_one_sublevel_option(p, opts); + if (ret) { + free(s); + return ret; + } + + p = strtok(NULL, ","); + } + + free(s); + return 0; +} diff --git a/tools/perf/util/parse-sublevel-options.h b/tools/perf/util/parse-sublevel-options.h new file mode 100644 index 000000000000..9b9efcc2aaad --- /dev/null +++ b/tools/perf/util/parse-sublevel-options.h @@ -0,0 +1,11 @@ +#ifndef _PERF_PARSE_SUBLEVEL_OPTIONS_H +#define _PERF_PARSE_SUBLEVEL_OPTIONS_H + +struct sublevel_option { + const char *name; + int *value_ptr; +}; + +int perf_parse_sublevel_options(const char *str, struct sublevel_option *opts); + +#endif \ No newline at end of file -- cgit v1.2.3-59-g8ed1b From b1d84af6f58022a0d75f5745367624549cd0bfbf Mon Sep 17 00:00:00 2001 From: Changbin Du Date: Sat, 8 Aug 2020 10:31:31 +0800 Subject: perf ftrace: Add support for tracing option 'func_stack_trace' This adds support to display call trace for function tracer. To do this, just specify a '--func-opts call-graph' option. Example: $ sudo perf ftrace -T vfs_read --func-opts call-graph iio-sensor-prox-855 [003] 6168.369657: vfs_read <-ksys_read iio-sensor-prox-855 [003] 6168.369677: => vfs_read => ksys_read => __x64_sys_read => do_syscall_64 => entry_SYSCALL_64_after_hwframe ... Signed-off-by: Changbin Du Acked-by: Namhyung Kim Tested-by: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Steven Rostedt (VMware) Link: http://lore.kernel.org/lkml/20200808023141.14227-9-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-ftrace.txt | 4 +++ tools/perf/builtin-ftrace.c | 42 ++++++++++++++++++++++++++++++++ 2 files changed, 46 insertions(+) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-ftrace.txt b/tools/perf/Documentation/perf-ftrace.txt index c46d0a09b38c..8f08ad0992c2 100644 --- a/tools/perf/Documentation/perf-ftrace.txt +++ b/tools/perf/Documentation/perf-ftrace.txt @@ -76,6 +76,10 @@ OPTIONS specify multiple functions (or glob patterns). It will be passed to 'set_ftrace_notrace' in tracefs. +--func-opts:: + List of options allowed to set: + call-graph - Display kernel stack trace for function tracer. + -G:: --graph-funcs=:: Select function_graph tracer and set graph filter on the given diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index 07b81d0c1658..469b89748c42 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -27,6 +27,7 @@ #include "util/cap.h" #include "util/config.h" #include "util/units.h" +#include "util/parse-sublevel-options.h" #define DEFAULT_TRACER "function_graph" @@ -42,6 +43,7 @@ struct perf_ftrace { int graph_depth; unsigned long percpu_buffer_size; bool inherit; + int func_stack_trace; }; struct filter_entry { @@ -202,6 +204,7 @@ static void reset_tracing_filters(void); static void reset_tracing_options(struct perf_ftrace *ftrace __maybe_unused) { write_tracing_option_file("function-fork", "0"); + write_tracing_option_file("func_stack_trace", "0"); } static int reset_tracing_files(struct perf_ftrace *ftrace __maybe_unused) @@ -278,6 +281,17 @@ static int set_tracing_cpu(struct perf_ftrace *ftrace) return set_tracing_cpumask(cpumap); } +static int set_tracing_func_stack_trace(struct perf_ftrace *ftrace) +{ + if (!ftrace->func_stack_trace) + return 0; + + if (write_tracing_option_file("func_stack_trace", "1") < 0) + return -1; + + return 0; +} + static int reset_tracing_cpu(void) { struct perf_cpu_map *cpumap = perf_cpu_map__new(NULL); @@ -426,6 +440,11 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) goto out_reset; } + if (set_tracing_func_stack_trace(ftrace) < 0) { + pr_err("failed to set tracing option func_stack_trace\n"); + goto out_reset; + } + if (set_tracing_filters(ftrace) < 0) { pr_err("failed to set tracing filters\n"); goto out_reset; @@ -598,6 +617,26 @@ static int parse_buffer_size(const struct option *opt, return -1; } +static int parse_func_tracer_opts(const struct option *opt, + const char *str, int unset) +{ + int ret; + struct perf_ftrace *ftrace = (struct perf_ftrace *) opt->value; + struct sublevel_option func_tracer_opts[] = { + { .name = "call-graph", .value_ptr = &ftrace->func_stack_trace }, + { .name = NULL, } + }; + + if (unset) + return 0; + + ret = perf_parse_sublevel_options(str, func_tracer_opts); + if (ret) + return ret; + + return 0; +} + static void select_tracer(struct perf_ftrace *ftrace) { bool graph = !list_empty(&ftrace->graph_funcs) || @@ -645,6 +684,9 @@ int cmd_ftrace(int argc, const char **argv) parse_filter_func), OPT_CALLBACK('N', "notrace-funcs", &ftrace.notrace, "func", "do not trace given functions", parse_filter_func), + OPT_CALLBACK(0, "func-opts", &ftrace, "options", + "function tracer options, available options: call-graph", + parse_func_tracer_opts), OPT_CALLBACK('G', "graph-funcs", &ftrace.graph_funcs, "func", "trace given functions using function_graph tracer", parse_filter_func), -- cgit v1.2.3-59-g8ed1b From 38988f2e7ed515784b8b19e2be265c9c6984ce6f Mon Sep 17 00:00:00 2001 From: Changbin Du Date: Sat, 8 Aug 2020 10:31:32 +0800 Subject: perf ftrace: Add support for trace option sleep-time This adds an option '--graph-opts nosleep-time' which allow us only to measure on-CPU time. This option is function_graph tracer only. Signed-off-by: Changbin Du Acked-by: Namhyung Kim Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Steven Rostedt (VMware) Link: http://lore.kernel.org/lkml/20200808023141.14227-10-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-ftrace.txt | 4 ++++ tools/perf/builtin-ftrace.c | 41 ++++++++++++++++++++++++++++++++ 2 files changed, 45 insertions(+) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-ftrace.txt b/tools/perf/Documentation/perf-ftrace.txt index 8f08ad0992c2..3380a2e2c9ad 100644 --- a/tools/perf/Documentation/perf-ftrace.txt +++ b/tools/perf/Documentation/perf-ftrace.txt @@ -101,6 +101,10 @@ OPTIONS --graph-depth=:: Set max depth for function graph tracer to follow +--graph-opts:: + List of options allowed to set: + nosleep-time - Measure on-CPU time only for function_graph tracer. + SEE ALSO -------- linkperf:perf-record[1], linkperf:perf-trace[1] diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index 469b89748c42..47d63bba6a48 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -44,6 +44,7 @@ struct perf_ftrace { unsigned long percpu_buffer_size; bool inherit; int func_stack_trace; + int graph_nosleep_time; }; struct filter_entry { @@ -205,6 +206,7 @@ static void reset_tracing_options(struct perf_ftrace *ftrace __maybe_unused) { write_tracing_option_file("function-fork", "0"); write_tracing_option_file("func_stack_trace", "0"); + write_tracing_option_file("sleep-time", "1"); } static int reset_tracing_files(struct perf_ftrace *ftrace __maybe_unused) @@ -386,6 +388,17 @@ static int set_tracing_trace_inherit(struct perf_ftrace *ftrace) return 0; } +static int set_tracing_sleep_time(struct perf_ftrace *ftrace) +{ + if (!ftrace->graph_nosleep_time) + return 0; + + if (write_tracing_option_file("sleep-time", "0") < 0) + return -1; + + return 0; +} + static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) { char *trace_file; @@ -465,6 +478,11 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) goto out_reset; } + if (set_tracing_sleep_time(ftrace) < 0) { + pr_err("failed to set tracing option sleep-time\n"); + goto out_reset; + } + if (write_tracing_file("current_tracer", ftrace->tracer) < 0) { pr_err("failed to set current_tracer to %s\n", ftrace->tracer); goto out_reset; @@ -637,6 +655,26 @@ static int parse_func_tracer_opts(const struct option *opt, return 0; } +static int parse_graph_tracer_opts(const struct option *opt, + const char *str, int unset) +{ + int ret; + struct perf_ftrace *ftrace = (struct perf_ftrace *) opt->value; + struct sublevel_option graph_tracer_opts[] = { + { .name = "nosleep-time", .value_ptr = &ftrace->graph_nosleep_time }, + { .name = NULL, } + }; + + if (unset) + return 0; + + ret = perf_parse_sublevel_options(str, graph_tracer_opts); + if (ret) + return ret; + + return 0; +} + static void select_tracer(struct perf_ftrace *ftrace) { bool graph = !list_empty(&ftrace->graph_funcs) || @@ -694,6 +732,9 @@ int cmd_ftrace(int argc, const char **argv) "Set nograph filter on given functions", parse_filter_func), OPT_INTEGER('D', "graph-depth", &ftrace.graph_depth, "Max depth for function graph tracer"), + OPT_CALLBACK(0, "graph-opts", &ftrace, "options", + "graph tracer options, available options: nosleep-time", + parse_graph_tracer_opts), OPT_CALLBACK('m', "buffer-size", &ftrace.percpu_buffer_size, "size", "size of per cpu buffer", parse_buffer_size), OPT_BOOLEAN(0, "inherit", &ftrace.inherit, -- cgit v1.2.3-59-g8ed1b From d1bcf17cda8001e2826d409019866b33adb82219 Mon Sep 17 00:00:00 2001 From: Changbin Du Date: Sat, 8 Aug 2020 10:31:33 +0800 Subject: perf ftrace: Add support for trace option funcgraph-irqs This adds an option '--graph-opts noirqs' to filter out functions executed in irq context. Signed-off-by: Changbin Du Acked-by: Namhyung Kim Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Steven Rostedt (VMware) Link: http://lore.kernel.org/lkml/20200808023141.14227-11-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-ftrace.txt | 1 + tools/perf/builtin-ftrace.c | 21 ++++++++++++++++++++- 2 files changed, 21 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-ftrace.txt b/tools/perf/Documentation/perf-ftrace.txt index 3380a2e2c9ad..fca55ac55ff3 100644 --- a/tools/perf/Documentation/perf-ftrace.txt +++ b/tools/perf/Documentation/perf-ftrace.txt @@ -104,6 +104,7 @@ OPTIONS --graph-opts:: List of options allowed to set: nosleep-time - Measure on-CPU time only for function_graph tracer. + noirqs - Ignore functions that happen inside interrupt. SEE ALSO -------- diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index 47d63bba6a48..b4c821be4fb5 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -45,6 +45,7 @@ struct perf_ftrace { bool inherit; int func_stack_trace; int graph_nosleep_time; + int graph_noirqs; }; struct filter_entry { @@ -207,6 +208,7 @@ static void reset_tracing_options(struct perf_ftrace *ftrace __maybe_unused) write_tracing_option_file("function-fork", "0"); write_tracing_option_file("func_stack_trace", "0"); write_tracing_option_file("sleep-time", "1"); + write_tracing_option_file("funcgraph-irqs", "1"); } static int reset_tracing_files(struct perf_ftrace *ftrace __maybe_unused) @@ -399,6 +401,17 @@ static int set_tracing_sleep_time(struct perf_ftrace *ftrace) return 0; } +static int set_tracing_funcgraph_irqs(struct perf_ftrace *ftrace) +{ + if (!ftrace->graph_noirqs) + return 0; + + if (write_tracing_option_file("funcgraph-irqs", "0") < 0) + return -1; + + return 0; +} + static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) { char *trace_file; @@ -483,6 +496,11 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) goto out_reset; } + if (set_tracing_funcgraph_irqs(ftrace) < 0) { + pr_err("failed to set tracing option funcgraph-irqs\n"); + goto out_reset; + } + if (write_tracing_file("current_tracer", ftrace->tracer) < 0) { pr_err("failed to set current_tracer to %s\n", ftrace->tracer); goto out_reset; @@ -662,6 +680,7 @@ static int parse_graph_tracer_opts(const struct option *opt, struct perf_ftrace *ftrace = (struct perf_ftrace *) opt->value; struct sublevel_option graph_tracer_opts[] = { { .name = "nosleep-time", .value_ptr = &ftrace->graph_nosleep_time }, + { .name = "noirqs", .value_ptr = &ftrace->graph_noirqs }, { .name = NULL, } }; @@ -733,7 +752,7 @@ int cmd_ftrace(int argc, const char **argv) OPT_INTEGER('D', "graph-depth", &ftrace.graph_depth, "Max depth for function graph tracer"), OPT_CALLBACK(0, "graph-opts", &ftrace, "options", - "graph tracer options, available options: nosleep-time", + "graph tracer options, available options: nosleep-time,noirqs", parse_graph_tracer_opts), OPT_CALLBACK('m', "buffer-size", &ftrace.percpu_buffer_size, "size", "size of per cpu buffer", parse_buffer_size), -- cgit v1.2.3-59-g8ed1b From c81fc34e318503f28c571250d3434d8a788ca747 Mon Sep 17 00:00:00 2001 From: Changbin Du Date: Sat, 8 Aug 2020 10:31:34 +0800 Subject: perf ftrace: Add support for tracing option 'irq-info' This adds support to display irq context info for function tracer. To do this, just specify a '--func-opts irq-info' option. Signed-off-by: Changbin Du Acked-by: Namhyung Kim Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Steven Rostedt (VMware) Link: http://lore.kernel.org/lkml/20200808023141.14227-12-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-ftrace.txt | 1 + tools/perf/builtin-ftrace.c | 21 ++++++++++++++++++++- 2 files changed, 21 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-ftrace.txt b/tools/perf/Documentation/perf-ftrace.txt index fca55ac55ff3..37ea3ea97922 100644 --- a/tools/perf/Documentation/perf-ftrace.txt +++ b/tools/perf/Documentation/perf-ftrace.txt @@ -79,6 +79,7 @@ OPTIONS --func-opts:: List of options allowed to set: call-graph - Display kernel stack trace for function tracer. + irq-info - Display irq context info for function tracer. -G:: --graph-funcs=:: diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index b4c821be4fb5..d1241febe143 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -44,6 +44,7 @@ struct perf_ftrace { unsigned long percpu_buffer_size; bool inherit; int func_stack_trace; + int func_irq_info; int graph_nosleep_time; int graph_noirqs; }; @@ -209,6 +210,7 @@ static void reset_tracing_options(struct perf_ftrace *ftrace __maybe_unused) write_tracing_option_file("func_stack_trace", "0"); write_tracing_option_file("sleep-time", "1"); write_tracing_option_file("funcgraph-irqs", "1"); + write_tracing_option_file("irq-info", "0"); } static int reset_tracing_files(struct perf_ftrace *ftrace __maybe_unused) @@ -296,6 +298,17 @@ static int set_tracing_func_stack_trace(struct perf_ftrace *ftrace) return 0; } +static int set_tracing_func_irqinfo(struct perf_ftrace *ftrace) +{ + if (!ftrace->func_irq_info) + return 0; + + if (write_tracing_option_file("irq-info", "1") < 0) + return -1; + + return 0; +} + static int reset_tracing_cpu(void) { struct perf_cpu_map *cpumap = perf_cpu_map__new(NULL); @@ -471,6 +484,11 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) goto out_reset; } + if (set_tracing_func_irqinfo(ftrace) < 0) { + pr_err("failed to set tracing option irq-info\n"); + goto out_reset; + } + if (set_tracing_filters(ftrace) < 0) { pr_err("failed to set tracing filters\n"); goto out_reset; @@ -660,6 +678,7 @@ static int parse_func_tracer_opts(const struct option *opt, struct perf_ftrace *ftrace = (struct perf_ftrace *) opt->value; struct sublevel_option func_tracer_opts[] = { { .name = "call-graph", .value_ptr = &ftrace->func_stack_trace }, + { .name = "irq-info", .value_ptr = &ftrace->func_irq_info }, { .name = NULL, } }; @@ -742,7 +761,7 @@ int cmd_ftrace(int argc, const char **argv) OPT_CALLBACK('N', "notrace-funcs", &ftrace.notrace, "func", "do not trace given functions", parse_filter_func), OPT_CALLBACK(0, "func-opts", &ftrace, "options", - "function tracer options, available options: call-graph", + "function tracer options, available options: call-graph,irq-info", parse_func_tracer_opts), OPT_CALLBACK('G', "graph-funcs", &ftrace.graph_funcs, "func", "trace given functions using function_graph tracer", -- cgit v1.2.3-59-g8ed1b From 59486fb0c8bfda4ecd32b905d4cf2af92ec49f4c Mon Sep 17 00:00:00 2001 From: Changbin Du Date: Sat, 8 Aug 2020 10:31:35 +0800 Subject: perf ftrace: Add option 'verbose' to show more info for graph tracer Sometimes we want ftrace display more and longer information about the trace. $ sudo perf ftrace -G '*' 2) 0.979 us | mutex_unlock(); 2) 1.540 us | __fsnotify_parent(); 2) 0.433 us | fsnotify(); $ sudo perf ftrace -G '*' --graph-opts verbose 14160.770883 | 0) <...>-47814 | .... | 1.289 us | mutex_unlock(); 14160.770886 | 0) <...>-47814 | .... | 1.624 us | __fsnotify_parent(); 14160.770887 | 0) <...>-47814 | .... | 0.636 us | fsnotify(); 14160.770888 | 0) <...>-47814 | .... | 0.328 us | __sb_end_write(); 14160.770888 | 0) <...>-47814 | d... | 0.430 us | fpregs_assert_state_consistent(); 14160.770889 | 0) <...>-47814 | d... | | do_syscall_64() { 14160.770889 | 0) <...>-47814 | .... | | __x64_sys_close() { Signed-off-by: Changbin Du Acked-by: Namhyung Kim Tested-by: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Steven Rostedt (VMware) Link: http://lore.kernel.org/lkml/20200808023141.14227-13-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-ftrace.txt | 1 + tools/perf/builtin-ftrace.c | 29 ++++++++++++++++++++++++++++- 2 files changed, 29 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-ftrace.txt b/tools/perf/Documentation/perf-ftrace.txt index 37ea3ea97922..a2056aaf2ece 100644 --- a/tools/perf/Documentation/perf-ftrace.txt +++ b/tools/perf/Documentation/perf-ftrace.txt @@ -106,6 +106,7 @@ OPTIONS List of options allowed to set: nosleep-time - Measure on-CPU time only for function_graph tracer. noirqs - Ignore functions that happen inside interrupt. + verbose - Show process names, PIDs, timestamps, etc. SEE ALSO -------- diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index d1241febe143..8ee5287bd84a 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -47,6 +47,7 @@ struct perf_ftrace { int func_irq_info; int graph_nosleep_time; int graph_noirqs; + int graph_verbose; }; struct filter_entry { @@ -210,6 +211,9 @@ static void reset_tracing_options(struct perf_ftrace *ftrace __maybe_unused) write_tracing_option_file("func_stack_trace", "0"); write_tracing_option_file("sleep-time", "1"); write_tracing_option_file("funcgraph-irqs", "1"); + write_tracing_option_file("funcgraph-proc", "0"); + write_tracing_option_file("funcgraph-abstime", "0"); + write_tracing_option_file("latency-format", "0"); write_tracing_option_file("irq-info", "0"); } @@ -425,6 +429,23 @@ static int set_tracing_funcgraph_irqs(struct perf_ftrace *ftrace) return 0; } +static int set_tracing_funcgraph_verbose(struct perf_ftrace *ftrace) +{ + if (!ftrace->graph_verbose) + return 0; + + if (write_tracing_option_file("funcgraph-proc", "1") < 0) + return -1; + + if (write_tracing_option_file("funcgraph-abstime", "1") < 0) + return -1; + + if (write_tracing_option_file("latency-format", "1") < 0) + return -1; + + return 0; +} + static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) { char *trace_file; @@ -519,6 +540,11 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) goto out_reset; } + if (set_tracing_funcgraph_verbose(ftrace) < 0) { + pr_err("failed to set tracing option funcgraph-proc/funcgraph-abstime\n"); + goto out_reset; + } + if (write_tracing_file("current_tracer", ftrace->tracer) < 0) { pr_err("failed to set current_tracer to %s\n", ftrace->tracer); goto out_reset; @@ -700,6 +726,7 @@ static int parse_graph_tracer_opts(const struct option *opt, struct sublevel_option graph_tracer_opts[] = { { .name = "nosleep-time", .value_ptr = &ftrace->graph_nosleep_time }, { .name = "noirqs", .value_ptr = &ftrace->graph_noirqs }, + { .name = "verbose", .value_ptr = &ftrace->graph_verbose }, { .name = NULL, } }; @@ -771,7 +798,7 @@ int cmd_ftrace(int argc, const char **argv) OPT_INTEGER('D', "graph-depth", &ftrace.graph_depth, "Max depth for function graph tracer"), OPT_CALLBACK(0, "graph-opts", &ftrace, "options", - "graph tracer options, available options: nosleep-time,noirqs", + "graph tracer options, available options: nosleep-time,noirqs,verbose", parse_graph_tracer_opts), OPT_CALLBACK('m', "buffer-size", &ftrace.percpu_buffer_size, "size", "size of per cpu buffer", parse_buffer_size), -- cgit v1.2.3-59-g8ed1b From 00c85d5f45b6b366f68c876cd89b8b790f50ea0f Mon Sep 17 00:00:00 2001 From: Changbin Du Date: Sat, 8 Aug 2020 10:31:36 +0800 Subject: perf ftrace: Add support for trace option tracing_thresh This adds an option '--graph-opts thresh' to setup trace duration threshold for funcgraph tracer. $ sudo ./perf ftrace -G '*' --graph-opts thresh=100 3) ! 184.060 us | } /* schedule */ 3) ! 185.600 us | } /* exit_to_usermode_loop */ 2) ! 225.989 us | } /* schedule_idle */ 2) # 4140.051 us | } /* do_idle */ Signed-off-by: Changbin Du Acked-by: Namhyung Kim Tested-by: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Steven Rostedt (VMware) Link: http://lore.kernel.org/lkml/20200808023141.14227-14-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-ftrace.txt | 1 + tools/perf/builtin-ftrace.c | 26 +++++++++++++++++++++++++- 2 files changed, 26 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-ftrace.txt b/tools/perf/Documentation/perf-ftrace.txt index a2056aaf2ece..6fa927e5971b 100644 --- a/tools/perf/Documentation/perf-ftrace.txt +++ b/tools/perf/Documentation/perf-ftrace.txt @@ -107,6 +107,7 @@ OPTIONS nosleep-time - Measure on-CPU time only for function_graph tracer. noirqs - Ignore functions that happen inside interrupt. verbose - Show process names, PIDs, timestamps, etc. + thresh= - Setup trace duration threshold in microseconds. SEE ALSO -------- diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index 8ee5287bd84a..ca61f8b8bbf6 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -48,6 +48,7 @@ struct perf_ftrace { int graph_nosleep_time; int graph_noirqs; int graph_verbose; + int graph_thresh; }; struct filter_entry { @@ -234,6 +235,9 @@ static int reset_tracing_files(struct perf_ftrace *ftrace __maybe_unused) if (write_tracing_file("max_graph_depth", "0") < 0) return -1; + if (write_tracing_file("tracing_thresh", "0") < 0) + return -1; + reset_tracing_filters(); reset_tracing_options(ftrace); return 0; @@ -446,6 +450,20 @@ static int set_tracing_funcgraph_verbose(struct perf_ftrace *ftrace) return 0; } +static int set_tracing_thresh(struct perf_ftrace *ftrace) +{ + int ret; + + if (ftrace->graph_thresh == 0) + return 0; + + ret = write_tracing_file_int("tracing_thresh", ftrace->graph_thresh); + if (ret < 0) + return ret; + + return 0; +} + static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) { char *trace_file; @@ -545,6 +563,11 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) goto out_reset; } + if (set_tracing_thresh(ftrace) < 0) { + pr_err("failed to set tracing thresh\n"); + goto out_reset; + } + if (write_tracing_file("current_tracer", ftrace->tracer) < 0) { pr_err("failed to set current_tracer to %s\n", ftrace->tracer); goto out_reset; @@ -727,6 +750,7 @@ static int parse_graph_tracer_opts(const struct option *opt, { .name = "nosleep-time", .value_ptr = &ftrace->graph_nosleep_time }, { .name = "noirqs", .value_ptr = &ftrace->graph_noirqs }, { .name = "verbose", .value_ptr = &ftrace->graph_verbose }, + { .name = "thresh", .value_ptr = &ftrace->graph_thresh }, { .name = NULL, } }; @@ -798,7 +822,7 @@ int cmd_ftrace(int argc, const char **argv) OPT_INTEGER('D', "graph-depth", &ftrace.graph_depth, "Max depth for function graph tracer"), OPT_CALLBACK(0, "graph-opts", &ftrace, "options", - "graph tracer options, available options: nosleep-time,noirqs,verbose", + "graph tracer options, available options: nosleep-time,noirqs,verbose,thresh=", parse_graph_tracer_opts), OPT_CALLBACK('m', "buffer-size", &ftrace.percpu_buffer_size, "size", "size of per cpu buffer", parse_buffer_size), -- cgit v1.2.3-59-g8ed1b From a8f87a5cb466888bb70330b9ba55cdc0b9a1c20e Mon Sep 17 00:00:00 2001 From: Changbin Du Date: Sat, 8 Aug 2020 10:31:37 +0800 Subject: perf: ftrace: Allow set graph depth by '--graph-opts' This is to have a consistent view of all graph tracer options. The original option '--graph-depth' is marked as deprecated. Signed-off-by: Changbin Du Acked-by: Namhyung Kim Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Steven Rostedt (VMware) Link: http://lore.kernel.org/lkml/20200808023141.14227-15-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-ftrace.txt | 5 +---- tools/perf/builtin-ftrace.c | 5 ++--- 2 files changed, 3 insertions(+), 7 deletions(-) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-ftrace.txt b/tools/perf/Documentation/perf-ftrace.txt index 6fa927e5971b..08216634d2bc 100644 --- a/tools/perf/Documentation/perf-ftrace.txt +++ b/tools/perf/Documentation/perf-ftrace.txt @@ -98,16 +98,13 @@ OPTIONS specify multiple functions. It will be passed to 'set_graph_notrace' in tracefs. --D:: ---graph-depth=:: - Set max depth for function graph tracer to follow - --graph-opts:: List of options allowed to set: nosleep-time - Measure on-CPU time only for function_graph tracer. noirqs - Ignore functions that happen inside interrupt. verbose - Show process names, PIDs, timestamps, etc. thresh= - Setup trace duration threshold in microseconds. + depth= - Set max depth for function graph tracer to follow. SEE ALSO -------- diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index ca61f8b8bbf6..bc3b35d18167 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -751,6 +751,7 @@ static int parse_graph_tracer_opts(const struct option *opt, { .name = "noirqs", .value_ptr = &ftrace->graph_noirqs }, { .name = "verbose", .value_ptr = &ftrace->graph_verbose }, { .name = "thresh", .value_ptr = &ftrace->graph_thresh }, + { .name = "depth", .value_ptr = &ftrace->graph_depth }, { .name = NULL, } }; @@ -819,10 +820,8 @@ int cmd_ftrace(int argc, const char **argv) parse_filter_func), OPT_CALLBACK('g', "nograph-funcs", &ftrace.nograph_funcs, "func", "Set nograph filter on given functions", parse_filter_func), - OPT_INTEGER('D', "graph-depth", &ftrace.graph_depth, - "Max depth for function graph tracer"), OPT_CALLBACK(0, "graph-opts", &ftrace, "options", - "graph tracer options, available options: nosleep-time,noirqs,verbose,thresh=", + "graph tracer options, available options: nosleep-time,noirqs,verbose,thresh=,depth=", parse_graph_tracer_opts), OPT_CALLBACK('m', "buffer-size", &ftrace.percpu_buffer_size, "size", "size of per cpu buffer", parse_buffer_size), -- cgit v1.2.3-59-g8ed1b From 6555c2f6db2196ef1b6d7149e7d342d0ba2ec57e Mon Sep 17 00:00:00 2001 From: Changbin Du Date: Sat, 8 Aug 2020 10:31:38 +0800 Subject: perf ftrace: Add option -D/--delay to delay tracing This adds an option '-D/--delay' to allow us to start tracing some times later after workload is launched. Signed-off-by: Changbin Du Acked-by: Namhyung Kim Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Steven Rostedt (VMware) Link: http://lore.kernel.org/lkml/20200808023141.14227-16-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-ftrace.txt | 4 ++++ tools/perf/builtin-ftrace.c | 19 ++++++++++++++++--- 2 files changed, 20 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-ftrace.txt b/tools/perf/Documentation/perf-ftrace.txt index 08216634d2bc..29c684b3b3fd 100644 --- a/tools/perf/Documentation/perf-ftrace.txt +++ b/tools/perf/Documentation/perf-ftrace.txt @@ -39,6 +39,10 @@ OPTIONS --pid=:: Trace on existing process id (comma separated list). +-D:: +--delay:: + Time (ms) to wait before starting tracing after program start. + -a:: --all-cpus:: Force system-wide collection. Scripts run without a diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index bc3b35d18167..5f9a9ebea0a2 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -49,6 +49,7 @@ struct perf_ftrace { int graph_noirqs; int graph_verbose; int graph_thresh; + unsigned int initial_delay; }; struct filter_entry { @@ -596,13 +597,23 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) /* display column headers */ read_tracing_file_to_stdout("trace"); - if (write_tracing_file("tracing_on", "1") < 0) { - pr_err("can't enable tracing\n"); - goto out_close_fd; + if (!ftrace->initial_delay) { + if (write_tracing_file("tracing_on", "1") < 0) { + pr_err("can't enable tracing\n"); + goto out_close_fd; + } } perf_evlist__start_workload(ftrace->evlist); + if (ftrace->initial_delay) { + usleep(ftrace->initial_delay * 1000); + if (write_tracing_file("tracing_on", "1") < 0) { + pr_err("can't enable tracing\n"); + goto out_close_fd; + } + } + while (!done) { if (poll(&pollfd, 1, -1) < 0) break; @@ -827,6 +838,8 @@ int cmd_ftrace(int argc, const char **argv) "size of per cpu buffer", parse_buffer_size), OPT_BOOLEAN(0, "inherit", &ftrace.inherit, "trace children processes"), + OPT_UINTEGER('D', "delay", &ftrace.initial_delay, + "ms to wait before starting tracing after program start"), OPT_END() }; -- cgit v1.2.3-59-g8ed1b From 42145d71ddf369a536940a1b0d63b9aef6468516 Mon Sep 17 00:00:00 2001 From: Changbin Du Date: Sat, 8 Aug 2020 10:31:39 +0800 Subject: perf ftrace: Add option --tid to filter by thread id This allows us to trace single thread instead of the whole process. Signed-off-by: Changbin Du Acked-by: Namhyung Kim Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Steven Rostedt (VMware) Link: http://lore.kernel.org/lkml/20200808023141.14227-17-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-ftrace.txt | 3 +++ tools/perf/builtin-ftrace.c | 3 +++ 2 files changed, 6 insertions(+) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-ftrace.txt b/tools/perf/Documentation/perf-ftrace.txt index 29c684b3b3fd..78358af9a1c4 100644 --- a/tools/perf/Documentation/perf-ftrace.txt +++ b/tools/perf/Documentation/perf-ftrace.txt @@ -39,6 +39,9 @@ OPTIONS --pid=:: Trace on existing process id (comma separated list). +--tid=:: + Trace on existing thread id (comma separated list). + -D:: --delay:: Time (ms) to wait before starting tracing after program start. diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index 5f9a9ebea0a2..13abb737fd12 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -812,6 +812,9 @@ int cmd_ftrace(int argc, const char **argv) "Show available functions to filter"), OPT_STRING('p', "pid", &ftrace.target.pid, "pid", "trace on existing process id"), + /* TODO: Add short option -t after -t/--tracer can be removed. */ + OPT_STRING(0, "tid", &ftrace.target.tid, "tid", + "trace on existing thread id (exclusive to --pid)"), OPT_INCR('v', "verbose", &verbose, "be more verbose"), OPT_BOOLEAN('a', "all-cpus", &ftrace.target.system_wide, -- cgit v1.2.3-59-g8ed1b From 3c4dc21b75a74d4a8458624649a3e09af399a384 Mon Sep 17 00:00:00 2001 From: Changbin Du Date: Sat, 8 Aug 2020 10:31:40 +0800 Subject: perf: ftrace: Add set_tracing_options() to set all trace options Now the __cmd_ftrace() becomes a bit long. This moves the trace option setting code to a separate function set_tracing_options(). Suggested-by: Namhyung Kim Signed-off-by: Changbin Du Acked-by: Namhyung Kim Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Steven Rostedt (VMware) Link: http://lore.kernel.org/lkml/20200808023141.14227-18-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-ftrace.c | 118 +++++++++++++++++++++++--------------------- 1 file changed, 63 insertions(+), 55 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index 13abb737fd12..9da38dc8b542 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -465,110 +465,118 @@ static int set_tracing_thresh(struct perf_ftrace *ftrace) return 0; } -static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) +static int set_tracing_options(struct perf_ftrace *ftrace) { - char *trace_file; - int trace_fd; - char buf[4096]; - struct pollfd pollfd = { - .events = POLLIN, - }; - - if (!(perf_cap__capable(CAP_PERFMON) || - perf_cap__capable(CAP_SYS_ADMIN))) { - pr_err("ftrace only works for %s!\n", -#ifdef HAVE_LIBCAP_SUPPORT - "users with the CAP_PERFMON or CAP_SYS_ADMIN capability" -#else - "root" -#endif - ); - return -1; - } - - signal(SIGINT, sig_handler); - signal(SIGUSR1, sig_handler); - signal(SIGCHLD, sig_handler); - signal(SIGPIPE, sig_handler); - - if (ftrace->list_avail_functions) - return read_tracing_file_to_stdout("available_filter_functions"); - - if (reset_tracing_files(ftrace) < 0) { - pr_err("failed to reset ftrace\n"); - goto out; - } - - /* reset ftrace buffer */ - if (write_tracing_file("trace", "0") < 0) - goto out; - - if (argc && perf_evlist__prepare_workload(ftrace->evlist, - &ftrace->target, argv, false, - ftrace__workload_exec_failed_signal) < 0) { - goto out; - } - if (set_tracing_pid(ftrace) < 0) { pr_err("failed to set ftrace pid\n"); - goto out_reset; + return -1; } if (set_tracing_cpu(ftrace) < 0) { pr_err("failed to set tracing cpumask\n"); - goto out_reset; + return -1; } if (set_tracing_func_stack_trace(ftrace) < 0) { pr_err("failed to set tracing option func_stack_trace\n"); - goto out_reset; + return -1; } if (set_tracing_func_irqinfo(ftrace) < 0) { pr_err("failed to set tracing option irq-info\n"); - goto out_reset; + return -1; } if (set_tracing_filters(ftrace) < 0) { pr_err("failed to set tracing filters\n"); - goto out_reset; + return -1; } if (set_tracing_depth(ftrace) < 0) { pr_err("failed to set graph depth\n"); - goto out_reset; + return -1; } if (set_tracing_percpu_buffer_size(ftrace) < 0) { pr_err("failed to set tracing per-cpu buffer size\n"); - goto out_reset; + return -1; } if (set_tracing_trace_inherit(ftrace) < 0) { pr_err("failed to set tracing option function-fork\n"); - goto out_reset; + return -1; } if (set_tracing_sleep_time(ftrace) < 0) { pr_err("failed to set tracing option sleep-time\n"); - goto out_reset; + return -1; } if (set_tracing_funcgraph_irqs(ftrace) < 0) { pr_err("failed to set tracing option funcgraph-irqs\n"); - goto out_reset; + return -1; } if (set_tracing_funcgraph_verbose(ftrace) < 0) { pr_err("failed to set tracing option funcgraph-proc/funcgraph-abstime\n"); - goto out_reset; + return -1; } if (set_tracing_thresh(ftrace) < 0) { pr_err("failed to set tracing thresh\n"); - goto out_reset; + return -1; + } + + return 0; +} + +static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) +{ + char *trace_file; + int trace_fd; + char buf[4096]; + struct pollfd pollfd = { + .events = POLLIN, + }; + + if (!(perf_cap__capable(CAP_PERFMON) || + perf_cap__capable(CAP_SYS_ADMIN))) { + pr_err("ftrace only works for %s!\n", +#ifdef HAVE_LIBCAP_SUPPORT + "users with the CAP_PERFMON or CAP_SYS_ADMIN capability" +#else + "root" +#endif + ); + return -1; } + signal(SIGINT, sig_handler); + signal(SIGUSR1, sig_handler); + signal(SIGCHLD, sig_handler); + signal(SIGPIPE, sig_handler); + + if (ftrace->list_avail_functions) + return read_tracing_file_to_stdout("available_filter_functions"); + + if (reset_tracing_files(ftrace) < 0) { + pr_err("failed to reset ftrace\n"); + goto out; + } + + /* reset ftrace buffer */ + if (write_tracing_file("trace", "0") < 0) + goto out; + + if (argc && perf_evlist__prepare_workload(ftrace->evlist, + &ftrace->target, argv, false, + ftrace__workload_exec_failed_signal) < 0) { + goto out; + } + + if (set_tracing_options(ftrace) < 0) + goto out_reset; + if (write_tracing_file("current_tracer", ftrace->tracer) < 0) { pr_err("failed to set current_tracer to %s\n", ftrace->tracer); goto out_reset; -- cgit v1.2.3-59-g8ed1b From 0094024a186045ac1a48d839bdb56c42b8f8279d Mon Sep 17 00:00:00 2001 From: Changbin Du Date: Sat, 8 Aug 2020 10:31:41 +0800 Subject: perf ftrace: Add change log Add a change log after previous enhancements. Signed-off-by: Changbin Du Acked-by: Namhyung Kim Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Steven Rostedt (VMware) Link: http://lore.kernel.org/lkml/20200808023141.14227-19-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-ftrace.c | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index 9da38dc8b542..167f1f57aba3 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -3,6 +3,7 @@ * builtin-ftrace.c * * Copyright (c) 2013 LG Electronics, Namhyung Kim + * Copyright (c) 2020 Changbin Du , significant enhancement. */ #include "builtin.h" -- cgit v1.2.3-59-g8ed1b From 8989f5f076051f3ceb1da083181b7d69808fff0e Mon Sep 17 00:00:00 2001 From: "Paul A. Clarke" Date: Thu, 13 Aug 2020 17:21:55 -0500 Subject: perf stat: Update POWER9 metrics to utilize other metrics These changes take advantage of the new capability added in merge commit 00e4db51259a5f936fec1424b884f029479d3981 "Allow using computed metrics in calculating other metrics". The net is a simplification of the expressions for a handful of metrics, but no functional change. Signed-off-by: Paul Clarke Reviewed-by: Kajol Jain Acked-by: Ian Rogers Cc: Jiri Olsa Cc: Madhavan Srinivasan Link: http://lore.kernel.org/lkml/20200813222155.268183-1-pc@us.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- .../pmu-events/arch/powerpc/power9/metrics.json | 48 +++++++++++----------- 1 file changed, 24 insertions(+), 24 deletions(-) (limited to 'tools') diff --git a/tools/perf/pmu-events/arch/powerpc/power9/metrics.json b/tools/perf/pmu-events/arch/powerpc/power9/metrics.json index 80816d6402e9..f8784c608479 100644 --- a/tools/perf/pmu-events/arch/powerpc/power9/metrics.json +++ b/tools/perf/pmu-events/arch/powerpc/power9/metrics.json @@ -60,7 +60,7 @@ }, { "BriefDescription": "Stalls due to short latency decimal floating ops.", - "MetricExpr": "(PM_CMPLU_STALL_DFU - PM_CMPLU_STALL_DFLONG)/PM_RUN_INST_CMPL", + "MetricExpr": "dfu_stall_cpi - dflong_stall_cpi", "MetricGroup": "cpi_breakdown", "MetricName": "dfu_other_stall_cpi" }, @@ -72,7 +72,7 @@ }, { "BriefDescription": "Completion stall by Dcache miss which resolved off node memory/cache", - "MetricExpr": "(PM_CMPLU_STALL_DMISS_L3MISS - PM_CMPLU_STALL_DMISS_L21_L31 - PM_CMPLU_STALL_DMISS_LMEM - PM_CMPLU_STALL_DMISS_REMOTE)/PM_RUN_INST_CMPL", + "MetricExpr": "dmiss_non_local_stall_cpi - dmiss_remote_stall_cpi", "MetricGroup": "cpi_breakdown", "MetricName": "dmiss_distant_stall_cpi" }, @@ -90,7 +90,7 @@ }, { "BriefDescription": "Completion stall due to cache miss that resolves in the L2 or L3 without conflict", - "MetricExpr": "(PM_CMPLU_STALL_DMISS_L2L3 - PM_CMPLU_STALL_DMISS_L2L3_CONFLICT)/PM_RUN_INST_CMPL", + "MetricExpr": "dmiss_l2l3_stall_cpi - dmiss_l2l3_conflict_stall_cpi", "MetricGroup": "cpi_breakdown", "MetricName": "dmiss_l2l3_noconflict_stall_cpi" }, @@ -114,7 +114,7 @@ }, { "BriefDescription": "Completion stall by Dcache miss which resolved outside of local memory", - "MetricExpr": "(PM_CMPLU_STALL_DMISS_L3MISS - PM_CMPLU_STALL_DMISS_L21_L31 - PM_CMPLU_STALL_DMISS_LMEM)/PM_RUN_INST_CMPL", + "MetricExpr": "dmiss_l3miss_stall_cpi - dmiss_l21_l31_stall_cpi - dmiss_lmem_stall_cpi", "MetricGroup": "cpi_breakdown", "MetricName": "dmiss_non_local_stall_cpi" }, @@ -126,7 +126,7 @@ }, { "BriefDescription": "Stalls due to short latency double precision ops.", - "MetricExpr": "(PM_CMPLU_STALL_DP - PM_CMPLU_STALL_DPLONG)/PM_RUN_INST_CMPL", + "MetricExpr": "dp_stall_cpi - dplong_stall_cpi", "MetricGroup": "cpi_breakdown", "MetricName": "dp_other_stall_cpi" }, @@ -155,7 +155,7 @@ "MetricName": "emq_full_stall_cpi" }, { - "MetricExpr": "(PM_CMPLU_STALL_ERAT_MISS + PM_CMPLU_STALL_EMQ_FULL)/PM_RUN_INST_CMPL", + "MetricExpr": "erat_miss_stall_cpi + emq_full_stall_cpi", "MetricGroup": "cpi_breakdown", "MetricName": "emq_stall_cpi" }, @@ -173,7 +173,7 @@ }, { "BriefDescription": "Completion stall due to execution units for other reasons.", - "MetricExpr": "(PM_CMPLU_STALL_EXEC_UNIT - PM_CMPLU_STALL_FXU - PM_CMPLU_STALL_DP - PM_CMPLU_STALL_DFU - PM_CMPLU_STALL_PM - PM_CMPLU_STALL_CRYPTO - PM_CMPLU_STALL_VFXU - PM_CMPLU_STALL_VDP)/PM_RUN_INST_CMPL", + "MetricExpr": "exec_unit_stall_cpi - scalar_stall_cpi - vector_stall_cpi", "MetricGroup": "cpi_breakdown", "MetricName": "exec_unit_other_stall_cpi" }, @@ -197,7 +197,7 @@ }, { "BriefDescription": "Stalls due to short latency integer ops", - "MetricExpr": "(PM_CMPLU_STALL_FXU - PM_CMPLU_STALL_FXLONG)/PM_RUN_INST_CMPL", + "MetricExpr": "fxu_stall_cpi - fxlong_stall_cpi", "MetricGroup": "cpi_breakdown", "MetricName": "fxu_other_stall_cpi" }, @@ -221,7 +221,7 @@ }, { "BriefDescription": "Instruction Completion Table other stalls", - "MetricExpr": "(PM_ICT_NOSLOT_CYC - PM_ICT_NOSLOT_IC_MISS - PM_ICT_NOSLOT_BR_MPRED_ICMISS - PM_ICT_NOSLOT_BR_MPRED - PM_ICT_NOSLOT_DISP_HELD)/PM_RUN_INST_CMPL", + "MetricExpr": "nothing_dispatched_cpi - ict_noslot_ic_miss_cpi - ict_noslot_br_mpred_icmiss_cpi - ict_noslot_br_mpred_cpi - ict_noslot_disp_held_cpi", "MetricGroup": "cpi_breakdown", "MetricName": "ict_noslot_cyc_other_cpi" }, @@ -245,7 +245,7 @@ }, { "BriefDescription": "ICT_NOSLOT_DISP_HELD_OTHER_CPI", - "MetricExpr": "(PM_ICT_NOSLOT_DISP_HELD - PM_ICT_NOSLOT_DISP_HELD_HB_FULL - PM_ICT_NOSLOT_DISP_HELD_SYNC - PM_ICT_NOSLOT_DISP_HELD_TBEGIN - PM_ICT_NOSLOT_DISP_HELD_ISSQ)/PM_RUN_INST_CMPL", + "MetricExpr": "ict_noslot_disp_held_cpi - ict_noslot_disp_held_hb_full_cpi - ict_noslot_disp_held_sync_cpi - ict_noslot_disp_held_tbegin_cpi - ict_noslot_disp_held_issq_cpi", "MetricGroup": "cpi_breakdown", "MetricName": "ict_noslot_disp_held_other_cpi" }, @@ -263,7 +263,7 @@ }, { "BriefDescription": "ICT_NOSLOT_IC_L2_CPI", - "MetricExpr": "(PM_ICT_NOSLOT_IC_MISS - PM_ICT_NOSLOT_IC_L3 - PM_ICT_NOSLOT_IC_L3MISS)/PM_RUN_INST_CMPL", + "MetricExpr": "ict_noslot_ic_miss_cpi - ict_noslot_ic_l3_cpi - ict_noslot_ic_l3miss_cpi", "MetricGroup": "cpi_breakdown", "MetricName": "ict_noslot_ic_l2_cpi" }, @@ -286,7 +286,7 @@ "MetricName": "ict_noslot_ic_miss_cpi" }, { - "MetricExpr": "(PM_NTC_ISSUE_HELD_DARQ_FULL + PM_NTC_ISSUE_HELD_ARB + PM_NTC_ISSUE_HELD_OTHER)/PM_RUN_INST_CMPL", + "MetricExpr": "ntc_issue_held_darq_full_cpi + ntc_issue_held_arb_cpi + ntc_issue_held_other_cpi", "MetricGroup": "cpi_breakdown", "MetricName": "issue_hold_cpi" }, @@ -327,7 +327,7 @@ "MetricName": "lrq_other_stall_cpi" }, { - "MetricExpr": "(PM_CMPLU_STALL_LMQ_FULL + PM_CMPLU_STALL_ST_FWD + PM_CMPLU_STALL_LHS + PM_CMPLU_STALL_LSU_MFSPR + PM_CMPLU_STALL_LARX + PM_CMPLU_STALL_LRQ_OTHER)/PM_RUN_INST_CMPL", + "MetricExpr": "lmq_full_stall_cpi + st_fwd_stall_cpi + lhs_stall_cpi + lsu_mfspr_stall_cpi + larx_stall_cpi + lrq_other_stall_cpi", "MetricGroup": "cpi_breakdown", "MetricName": "lrq_stall_cpi" }, @@ -338,7 +338,7 @@ "MetricName": "lsaq_arb_stall_cpi" }, { - "MetricExpr": "(PM_CMPLU_STALL_LRQ_FULL + PM_CMPLU_STALL_SRQ_FULL + PM_CMPLU_STALL_LSAQ_ARB)/PM_RUN_INST_CMPL", + "MetricExpr": "lrq_full_stall_cpi + srq_full_stall_cpi + lsaq_arb_stall_cpi", "MetricGroup": "cpi_breakdown", "MetricName": "lsaq_stall_cpi" }, @@ -362,7 +362,7 @@ }, { "BriefDescription": "Completion LSU stall for other reasons", - "MetricExpr": "(PM_CMPLU_STALL_LSU - PM_CMPLU_STALL_LSU_FIN - PM_CMPLU_STALL_STORE_FINISH - PM_CMPLU_STALL_STORE_DATA - PM_CMPLU_STALL_EIEIO - PM_CMPLU_STALL_STCX - PM_CMPLU_STALL_SLB - PM_CMPLU_STALL_TEND - PM_CMPLU_STALL_PASTE - PM_CMPLU_STALL_TLBIE - PM_CMPLU_STALL_STORE_PIPE_ARB - PM_CMPLU_STALL_STORE_FIN_ARB - PM_CMPLU_STALL_LOAD_FINISH + PM_CMPLU_STALL_DCACHE_MISS - PM_CMPLU_STALL_LMQ_FULL - PM_CMPLU_STALL_ST_FWD - PM_CMPLU_STALL_LHS - PM_CMPLU_STALL_LSU_MFSPR - PM_CMPLU_STALL_LARX - PM_CMPLU_STALL_LRQ_OTHER + PM_CMPLU_STALL_ERAT_MISS + PM_CMPLU_STALL_EMQ_FULL - PM_CMPLU_STALL_LRQ_FULL - PM_CMPLU_STALL_SRQ_FULL - PM_CMPLU_STALL_LSAQ_ARB) / PM_RUN_INST_CMPL", + "MetricExpr": "lsu_stall_cpi - lsu_fin_stall_cpi - store_finish_stall_cpi - srq_stall_cpi - load_finish_stall_cpi + lsu_stall_dcache_miss_cpi - lrq_stall_cpi + emq_stall_cpi - lsaq_stall_cpi", "MetricGroup": "cpi_breakdown", "MetricName": "lsu_other_stall_cpi" }, @@ -434,13 +434,13 @@ }, { "BriefDescription": "Cycles unaccounted for.", - "MetricExpr": "(PM_RUN_CYC - PM_1PLUS_PPC_CMPL - PM_CMPLU_STALL_THRD - PM_CMPLU_STALL - PM_ICT_NOSLOT_CYC)/PM_RUN_INST_CMPL", + "MetricExpr": "run_cpi - completion_cpi - thread_block_stall_cpi - stall_cpi - nothing_dispatched_cpi", "MetricGroup": "cpi_breakdown", "MetricName": "other_cpi" }, { "BriefDescription": "Completion stall for other reasons", - "MetricExpr": "(PM_CMPLU_STALL - PM_CMPLU_STALL_NTC_DISP_FIN - PM_CMPLU_STALL_NTC_FLUSH - PM_CMPLU_STALL_LSU - PM_CMPLU_STALL_EXEC_UNIT - PM_CMPLU_STALL_BRU)/PM_RUN_INST_CMPL", + "MetricExpr": "stall_cpi - ntc_disp_fin_stall_cpi - ntc_flush_stall_cpi - lsu_stall_cpi - exec_unit_stall_cpi - bru_stall_cpi", "MetricGroup": "cpi_breakdown", "MetricName": "other_stall_cpi" }, @@ -469,7 +469,7 @@ "MetricName": "run_cyc_cpi" }, { - "MetricExpr": "(PM_CMPLU_STALL_FXU + PM_CMPLU_STALL_DP + PM_CMPLU_STALL_DFU + PM_CMPLU_STALL_PM + PM_CMPLU_STALL_CRYPTO)/PM_RUN_INST_CMPL", + "MetricExpr": "fxu_stall_cpi + dp_stall_cpi + dfu_stall_cpi + pm_stall_cpi + crypto_stall_cpi", "MetricGroup": "cpi_breakdown", "MetricName": "scalar_stall_cpi" }, @@ -492,7 +492,7 @@ "MetricName": "srq_full_stall_cpi" }, { - "MetricExpr": "(PM_CMPLU_STALL_STORE_DATA + PM_CMPLU_STALL_EIEIO + PM_CMPLU_STALL_STCX + PM_CMPLU_STALL_SLB + PM_CMPLU_STALL_TEND + PM_CMPLU_STALL_PASTE + PM_CMPLU_STALL_TLBIE + PM_CMPLU_STALL_STORE_PIPE_ARB + PM_CMPLU_STALL_STORE_FIN_ARB)/PM_RUN_INST_CMPL", + "MetricExpr": "store_data_stall_cpi + eieio_stall_cpi + stcx_stall_cpi + slb_stall_cpi + tend_stall_cpi + paste_stall_cpi + tlbie_stall_cpi + store_pipe_arb_stall_cpi + store_fin_arb_stall_cpi", "MetricGroup": "cpi_breakdown", "MetricName": "srq_stall_cpi" }, @@ -558,7 +558,7 @@ }, { "BriefDescription": "Vector stalls due to small latency double precision ops", - "MetricExpr": "(PM_CMPLU_STALL_VDP - PM_CMPLU_STALL_VDPLONG)/PM_RUN_INST_CMPL", + "MetricExpr": "vdp_stall_cpi - vdplong_stall_cpi", "MetricGroup": "cpi_breakdown", "MetricName": "vdp_other_stall_cpi" }, @@ -575,7 +575,7 @@ "MetricName": "vdplong_stall_cpi" }, { - "MetricExpr": "(PM_CMPLU_STALL_VFXU + PM_CMPLU_STALL_VDP)/PM_RUN_INST_CMPL", + "MetricExpr": "vfxu_stall_cpi + vdp_stall_cpi", "MetricGroup": "cpi_breakdown", "MetricName": "vector_stall_cpi" }, @@ -587,7 +587,7 @@ }, { "BriefDescription": "Vector stalls due to small latency integer ops", - "MetricExpr": "(PM_CMPLU_STALL_VFXU - PM_CMPLU_STALL_VFXLONG)/PM_RUN_INST_CMPL", + "MetricExpr": "vfxu_stall_cpi - vfxlong_stall_cpi", "MetricGroup": "cpi_breakdown", "MetricName": "vfxu_other_stall_cpi" }, @@ -1844,7 +1844,7 @@ }, { "BriefDescription": "% of DL1 reloads from Private L3, other core per Inst", - "MetricExpr": "(PM_DATA_FROM_L31_MOD + PM_DATA_FROM_L31_SHR) * 100 / PM_RUN_INST_CMPL", + "MetricExpr": "dl1_reload_from_l31_mod_rate_percent + dl1_reload_from_l31_shr_rate_percent", "MetricName": "dl1_reload_from_l31_rate_percent" }, { @@ -1979,7 +1979,7 @@ }, { "BriefDescription": "Completion stall because a different thread was using the completion pipe", - "MetricExpr": "(PM_CMPLU_STALL_THRD - PM_CMPLU_STALL_EXCEPTION - PM_CMPLU_STALL_ANY_SYNC - PM_CMPLU_STALL_SYNC_PMU_INT - PM_CMPLU_STALL_SPEC_FINISH - PM_CMPLU_STALL_FLUSH_ANY_THREAD - PM_CMPLU_STALL_LSU_FLUSH_NEXT - PM_CMPLU_STALL_NESTED_TBEGIN - PM_CMPLU_STALL_NESTED_TEND - PM_CMPLU_STALL_MTFPSCR)/PM_RUN_INST_CMPL", + "MetricExpr": "thread_block_stall_cpi - exception_stall_cpi - any_sync_stall_cpi - sync_pmu_int_stall_cpi - spec_finish_stall_cpi - flush_any_thread_stall_cpi - lsu_flush_next_stall_cpi - nested_tbegin_stall_cpi - nested_tend_stall_cpi - mtfpscr_stall_cpi", "MetricName": "other_thread_cmpl_stall" }, { -- cgit v1.2.3-59-g8ed1b From a508d061ef04b163a85f55ba8a748c026f89da45 Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Fri, 14 Aug 2020 18:44:54 +0800 Subject: perf bench numa: Remove dead code in parse_nodes_opt() In the function parse_nodes_opt(), the statement "return 0;" is dead code, remove it. Signed-off-by: Peng Fan Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/1597401894-27549-1-git-send-email-fanpeng@loongson.cn Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/bench/numa.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/bench/numa.c b/tools/perf/bench/numa.c index 6d5c890478cb..f85bceccc459 100644 --- a/tools/perf/bench/numa.c +++ b/tools/perf/bench/numa.c @@ -733,8 +733,6 @@ static int parse_nodes_opt(const struct option *opt __maybe_unused, return -1; return parse_node_list(arg); - - return 0; } #define BIT(x) (1ul << x) -- cgit v1.2.3-59-g8ed1b From c7a14fdcb3fa77368273b3daab52ad8e86d358b6 Mon Sep 17 00:00:00 2001 From: "Frank Ch. Eigler" Date: Thu, 13 Aug 2020 10:22:04 +0200 Subject: perf build-ids: Fall back to debuginfod query if debuginfo not found During a perf-record, use the -ldebuginfod API to query a debuginfod server, should the debug data not be found in the usual system locations. If successful, the usual $HOME/.debug dir is populated. Tested with: $ find . . ./ctags-debuginfo-5.8-26.fc31.x86_64.rpm ./usr ./usr/lib ./usr/lib/debug ./usr/lib/debug/.build-id ./usr/lib/debug/.build-id/ca ./usr/lib/debug/.build-id/ca/46f6ae6a0cee57d85abc1d461c49074248908d ./usr/lib/debug/.build-id/ca/46f6ae6a0cee57d85abc1d461c49074248908d.debug ./usr/lib/debug/usr ./usr/lib/debug/usr/bin ./usr/lib/debug/usr/bin/ctags-5.8-26.fc31.x86_64.debug $ debuginfod -F . ... $ rm -rf ~/.debug/ ; mkdir ~/.debug $ perf record make tags BUILD: Doing 'make -j8' parallel build GEN tags [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.107 MB perf.data (1483 samples) ] $ find ~/.debug | grep ctags /home/jolsa/.debug/usr/bin/ctags /home/jolsa/.debug/usr/bin/ctags/ca46f6ae6a0cee57d85abc1d461c49074248908d /home/jolsa/.debug/usr/bin/ctags/ca46f6ae6a0cee57d85abc1d461c49074248908d/elf /home/jolsa/.debug/usr/bin/ctags/ca46f6ae6a0cee57d85abc1d461c49074248908d/probes $ rm -rf ~/.debug/ ; mkdir ~/.debug $ DEBUGINFOD_URLS=http://localhost:8002 perf record make tags BUILD: Doing 'make -j8' parallel build GEN tags [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.108 MB perf.data (1531 samples) ] $ find ~/.debug | grep ctag /home/jolsa/.debug/usr/bin/ctags /home/jolsa/.debug/usr/bin/ctags/ca46f6ae6a0cee57d85abc1d461c49074248908d /home/jolsa/.debug/usr/bin/ctags/ca46f6ae6a0cee57d85abc1d461c49074248908d/debug /home/jolsa/.debug/usr/bin/ctags/ca46f6ae6a0cee57d85abc1d461c49074248908d/elf /home/jolsa/.debug/usr/bin/ctags/ca46f6ae6a0cee57d85abc1d461c49074248908d/probes Note the 'debug' file is created in the last run. Note that currently the debuginfo data are downloaded only on record path, we still need add this support to perf build-id/report.. and test ;-) Tested-by: Jiri Olsa Signed-off-by: Jiri Olsa Signed-off-by: Frank Ch. Eigler Signed-off-by: Arnaldo Carvalho de Melo --- tools/build/Makefile.feature | 3 ++- tools/build/feature/Makefile | 4 ++++ tools/build/feature/test-libdebuginfod.c | 8 ++++++++ tools/perf/Makefile.config | 8 ++++++++ tools/perf/Makefile.perf | 2 ++ tools/perf/util/build-id.c | 19 +++++++++++++++++++ 6 files changed, 43 insertions(+), 1 deletion(-) create mode 100644 tools/build/feature/test-libdebuginfod.c (limited to 'tools') diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature index e7818b44b48e..c1daf4d57518 100644 --- a/tools/build/Makefile.feature +++ b/tools/build/Makefile.feature @@ -98,7 +98,8 @@ FEATURE_TESTS_EXTRA := \ llvm-version \ clang \ libbpf \ - libpfm4 + libpfm4 \ + libdebuginfod FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC) diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile index 846ee1341a5c..d220fe952747 100644 --- a/tools/build/feature/Makefile +++ b/tools/build/feature/Makefile @@ -26,6 +26,7 @@ FILES= \ test-libelf-gelf_getnote.bin \ test-libelf-getshdrstrndx.bin \ test-libelf-mmap.bin \ + test-libdebuginfod.bin \ test-libnuma.bin \ test-numa_num_possible_cpus.bin \ test-libperl.bin \ @@ -157,6 +158,9 @@ $(OUTPUT)test-libelf-gelf_getnote.bin: $(OUTPUT)test-libelf-getshdrstrndx.bin: $(BUILD) -lelf +$(OUTPUT)test-libdebuginfod.bin: + $(BUILD) -ldebuginfod + $(OUTPUT)test-libnuma.bin: $(BUILD) -lnuma diff --git a/tools/build/feature/test-libdebuginfod.c b/tools/build/feature/test-libdebuginfod.c new file mode 100644 index 000000000000..da22548b8413 --- /dev/null +++ b/tools/build/feature/test-libdebuginfod.c @@ -0,0 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 +#include + +int main(void) +{ + debuginfod_client* c = debuginfod_begin(); + return (long)c; +} diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index 513633809c81..190be4fa5c21 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -501,6 +501,14 @@ ifndef NO_LIBELF CFLAGS += -DHAVE_ELF_GETSHDRSTRNDX_SUPPORT endif + ifndef NO_LIBDEBUGINFOD + $(call feature_check,libdebuginfod) + ifeq ($(feature-libdebuginfod), 1) + CFLAGS += -DHAVE_DEBUGINFOD_SUPPORT + EXTLIBS += -ldebuginfod + endif + endif + ifndef NO_DWARF ifeq ($(origin PERF_HAVE_DWARF_REGS), undefined) msg := $(warning DWARF register mappings have not been defined for architecture $(SRCARCH), DWARF support disabled); diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index e339e225410c..6031167939ae 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -124,6 +124,8 @@ include ../scripts/utilities.mak # # Define LIBPFM4 to enable libpfm4 events extension. # +# Define NO_LIBDEBUGINFOD if you do not want support debuginfod +# # As per kernel Makefile, avoid funny character set dependencies unexport LC_ALL diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c index c076fc7fe025..31207b6e2066 100644 --- a/tools/perf/util/build-id.c +++ b/tools/perf/util/build-id.c @@ -31,6 +31,10 @@ #include "probe-file.h" #include "strlist.h" +#ifdef HAVE_DEBUGINFOD_SUPPORT +#include +#endif + #include #include @@ -636,6 +640,21 @@ static char *build_id_cache__find_debug(const char *sbuild_id, if (realname && access(realname, R_OK)) zfree(&realname); nsinfo__mountns_exit(&nsc); + +#ifdef HAVE_DEBUGINFOD_SUPPORT + if (realname == NULL) { + debuginfod_client* c = debuginfod_begin(); + if (c != NULL) { + int fd = debuginfod_find_debuginfo(c, + (const unsigned char*)sbuild_id, 0, + &realname); + if (fd >= 0) + close(fd); /* retaining reference by realname */ + debuginfod_end(c); + } + } +#endif + out: free(debugfile); return realname; -- cgit v1.2.3-59-g8ed1b From 492e4edba6e2fc0620a69266d33f29c4a1f9ac1e Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Fri, 14 Aug 2020 09:55:33 -0300 Subject: perf ftrace: Make option description initials all capital letters And improve a bit the -m description to state that a B/K/M/G suffix is needed. Cc: Changbin Du Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Steven Rostedt (VMware) Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-ftrace.c | 28 ++++++++++++++-------------- 1 file changed, 14 insertions(+), 14 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index 167f1f57aba3..1d44bc2f63d8 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -816,42 +816,42 @@ int cmd_ftrace(int argc, const char **argv) }; const struct option ftrace_options[] = { OPT_STRING('t', "tracer", &ftrace.tracer, "tracer", - "tracer to use: function_graph(default) or function"), + "Tracer to use: function_graph(default) or function"), OPT_BOOLEAN('F', "funcs", &ftrace.list_avail_functions, "Show available functions to filter"), OPT_STRING('p', "pid", &ftrace.target.pid, "pid", - "trace on existing process id"), + "Trace on existing process id"), /* TODO: Add short option -t after -t/--tracer can be removed. */ OPT_STRING(0, "tid", &ftrace.target.tid, "tid", - "trace on existing thread id (exclusive to --pid)"), + "Trace on existing thread id (exclusive to --pid)"), OPT_INCR('v', "verbose", &verbose, - "be more verbose"), + "Be more verbose"), OPT_BOOLEAN('a', "all-cpus", &ftrace.target.system_wide, - "system-wide collection from all CPUs"), + "System-wide collection from all CPUs"), OPT_STRING('C', "cpu", &ftrace.target.cpu_list, "cpu", - "list of cpus to monitor"), + "List of cpus to monitor"), OPT_CALLBACK('T', "trace-funcs", &ftrace.filters, "func", - "trace given functions using function tracer", + "Trace given functions using function tracer", parse_filter_func), OPT_CALLBACK('N', "notrace-funcs", &ftrace.notrace, "func", - "do not trace given functions", parse_filter_func), + "Do not trace given functions", parse_filter_func), OPT_CALLBACK(0, "func-opts", &ftrace, "options", - "function tracer options, available options: call-graph,irq-info", + "Function tracer options, available options: call-graph,irq-info", parse_func_tracer_opts), OPT_CALLBACK('G', "graph-funcs", &ftrace.graph_funcs, "func", - "trace given functions using function_graph tracer", + "Trace given functions using function_graph tracer", parse_filter_func), OPT_CALLBACK('g', "nograph-funcs", &ftrace.nograph_funcs, "func", "Set nograph filter on given functions", parse_filter_func), OPT_CALLBACK(0, "graph-opts", &ftrace, "options", - "graph tracer options, available options: nosleep-time,noirqs,verbose,thresh=,depth=", + "Graph tracer options, available options: nosleep-time,noirqs,verbose,thresh=,depth=", parse_graph_tracer_opts), OPT_CALLBACK('m', "buffer-size", &ftrace.percpu_buffer_size, "size", - "size of per cpu buffer", parse_buffer_size), + "Size of per cpu buffer, needs to use a B, K, M or G suffix.", parse_buffer_size), OPT_BOOLEAN(0, "inherit", &ftrace.inherit, - "trace children processes"), + "Trace children processes"), OPT_UINTEGER('D', "delay", &ftrace.initial_delay, - "ms to wait before starting tracing after program start"), + "Number of milliseconds to wait before starting tracing after program start"), OPT_END() }; -- cgit v1.2.3-59-g8ed1b