1 files changed, 3 insertions, 1106 deletions

diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index f4afbb858ebb..fc1e5a991008 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -1,16 +1,16 @@
-#include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <inttypes.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
+#include <perf/cpumap.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <unistd.h>
 #include <uapi/linux/mman.h> /* To get things like MAP_HUGETLB even on older libc headers */
-#include <api/fs/fs.h>
 #include <linux/perf_event.h>
 #include <linux/zalloc.h>
+#include "cpumap.h"
 #include "dso.h"
 #include "event.h"
 #include "debug.h"
@@ -24,6 +24,7 @@
 #include "time-utils.h"
 #include <linux/ctype.h>
 #include "map.h"
+#include "util/namespaces.h"
 #include "symbol.h"
 #include "symbol/kallsyms.h"
 #include "asm/bug.h"
@@ -33,8 +34,6 @@
 #include "tool.h"
 #include "../perf.h"
 
-#define DEFAULT_PROC_MAP_PARSE_TIMEOUT 500
-
 static const char *perf_event__names[] = {
 	[0]					= "TOTAL",
 	[PERF_RECORD_MMAP]			= "MMAP",
@@ -75,18 +74,6 @@ static const char *perf_event__names[] = {
 	[PERF_RECORD_COMPRESSED]		= "COMPRESSED",
 };
 
-static const char *perf_ns__names[] = {
-	[NET_NS_INDEX]		= "net",
-	[UTS_NS_INDEX]		= "uts",
-	[IPC_NS_INDEX]		= "ipc",
-	[PID_NS_INDEX]		= "pid",
-	[USER_NS_INDEX]		= "user",
-	[MNT_NS_INDEX]		= "mnt",
-	[CGROUP_NS_INDEX]	= "cgroup",
-};
-
-unsigned int proc_map_timeout = DEFAULT_PROC_MAP_PARSE_TIMEOUT;
-
 const char *perf_event__name(unsigned int id)
 {
 	if (id >= ARRAY_SIZE(perf_event__names))
@@ -96,775 +83,6 @@ const char *perf_event__name(unsigned int id)
 	return perf_event__names[id];
 }
 
-static const char *perf_ns__name(unsigned int id)
-{
-	if (id >= ARRAY_SIZE(perf_ns__names))
-		return "UNKNOWN";
-	return perf_ns__names[id];
-}
-
-int perf_tool__process_synth_event(struct perf_tool *tool,
-				   union perf_event *event,
-				   struct machine *machine,
-				   perf_event__handler_t process)
-{
-	struct perf_sample synth_sample = {
-	.pid	   = -1,
-	.tid	   = -1,
-	.time	   = -1,
-	.stream_id = -1,
-	.cpu	   = -1,
-	.period	   = 1,
-	.cpumode   = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK,
-	};
-
-	return process(tool, event, &synth_sample, machine);
-};
-
-/*
- * Assumes that the first 4095 bytes of /proc/pid/stat contains
- * the comm, tgid and ppid.
- */
-static int perf_event__get_comm_ids(pid_t pid, char *comm, size_t len,
-				    pid_t *tgid, pid_t *ppid)
-{
-	char filename[PATH_MAX];
-	char bf[4096];
-	int fd;
-	size_t size = 0;
-	ssize_t n;
-	char *name, *tgids, *ppids;
-
-	*tgid = -1;
-	*ppid = -1;
-
-	snprintf(filename, sizeof(filename), "/proc/%d/status", pid);
-
-	fd = open(filename, O_RDONLY);
-	if (fd < 0) {
-		pr_debug("couldn't open %s\n", filename);
-		return -1;
-	}
-
-	n = read(fd, bf, sizeof(bf) - 1);
-	close(fd);
-	if (n <= 0) {
-		pr_warning("Couldn't get COMM, tigd and ppid for pid %d\n",
-			   pid);
-		return -1;
-	}
-	bf[n] = '\0';
-
-	name = strstr(bf, "Name:");
-	tgids = strstr(bf, "Tgid:");
-	ppids = strstr(bf, "PPid:");
-
-	if (name) {
-		char *nl;
-
-		name = skip_spaces(name + 5);  /* strlen("Name:") */
-		nl = strchr(name, '\n');
-		if (nl)
-			*nl = '\0';
-
-		size = strlen(name);
-		if (size >= len)
-			size = len - 1;
-		memcpy(comm, name, size);
-		comm[size] = '\0';
-	} else {
-		pr_debug("Name: string not found for pid %d\n", pid);
-	}
-
-	if (tgids) {
-		tgids += 5;  /* strlen("Tgid:") */
-		*tgid = atoi(tgids);
-	} else {
-		pr_debug("Tgid: string not found for pid %d\n", pid);
-	}
-
-	if (ppids) {
-		ppids += 5;  /* strlen("PPid:") */
-		*ppid = atoi(ppids);
-	} else {
-		pr_debug("PPid: string not found for pid %d\n", pid);
-	}
-
-	return 0;
-}
-
-static int perf_event__prepare_comm(union perf_event *event, pid_t pid,
-				    struct machine *machine,
-				    pid_t *tgid, pid_t *ppid)
-{
-	size_t size;
-
-	*ppid = -1;
-
-	memset(&event->comm, 0, sizeof(event->comm));
-
-	if (machine__is_host(machine)) {
-		if (perf_event__get_comm_ids(pid, event->comm.comm,
-					     sizeof(event->comm.comm),
-					     tgid, ppid) != 0) {
-			return -1;
-		}
-	} else {
-		*tgid = machine->pid;
-	}
-
-	if (*tgid < 0)
-		return -1;
-
-	event->comm.pid = *tgid;
-	event->comm.header.type = PERF_RECORD_COMM;
-
-	size = strlen(event->comm.comm) + 1;
-	size = PERF_ALIGN(size, sizeof(u64));
-	memset(event->comm.comm + size, 0, machine->id_hdr_size);
-	event->comm.header.size = (sizeof(event->comm) -
-				(sizeof(event->comm.comm) - size) +
-				machine->id_hdr_size);
-	event->comm.tid = pid;
-
-	return 0;
-}
-
-pid_t perf_event__synthesize_comm(struct perf_tool *tool,
-					 union perf_event *event, pid_t pid,
-					 perf_event__handler_t process,
-					 struct machine *machine)
-{
-	pid_t tgid, ppid;
-
-	if (perf_event__prepare_comm(event, pid, machine, &tgid, &ppid) != 0)
-		return -1;
-
-	if (perf_tool__process_synth_event(tool, event, machine, process) != 0)
-		return -1;
-
-	return tgid;
-}
-
-static void perf_event__get_ns_link_info(pid_t pid, const char *ns,
-					 struct perf_ns_link_info *ns_link_info)
-{
-	struct stat64 st;
-	char proc_ns[128];
-
-	sprintf(proc_ns, "/proc/%u/ns/%s", pid, ns);
-	if (stat64(proc_ns, &st) == 0) {
-		ns_link_info->dev = st.st_dev;
-		ns_link_info->ino = st.st_ino;
-	}
-}
-
-int perf_event__synthesize_namespaces(struct perf_tool *tool,
-				      union perf_event *event,
-				      pid_t pid, pid_t tgid,
-				      perf_event__handler_t process,
-				      struct machine *machine)
-{
-	u32 idx;
-	struct perf_ns_link_info *ns_link_info;
-
-	if (!tool || !tool->namespace_events)
-		return 0;
-
-	memset(&event->namespaces, 0, (sizeof(event->namespaces) +
-	       (NR_NAMESPACES * sizeof(struct perf_ns_link_info)) +
-	       machine->id_hdr_size));
-
-	event->namespaces.pid = tgid;
-	event->namespaces.tid = pid;
-
-	event->namespaces.nr_namespaces = NR_NAMESPACES;
-
-	ns_link_info = event->namespaces.link_info;
-
-	for (idx = 0; idx < event->namespaces.nr_namespaces; idx++)
-		perf_event__get_ns_link_info(pid, perf_ns__name(idx),
-					     &ns_link_info[idx]);
-
-	event->namespaces.header.type = PERF_RECORD_NAMESPACES;
-
-	event->namespaces.header.size = (sizeof(event->namespaces) +
-			(NR_NAMESPACES * sizeof(struct perf_ns_link_info)) +
-			machine->id_hdr_size);
-
-	if (perf_tool__process_synth_event(tool, event, machine, process) != 0)
-		return -1;
-
-	return 0;
-}
-
-static int perf_event__synthesize_fork(struct perf_tool *tool,
-				       union perf_event *event,
-				       pid_t pid, pid_t tgid, pid_t ppid,
-				       perf_event__handler_t process,
-				       struct machine *machine)
-{
-	memset(&event->fork, 0, sizeof(event->fork) + machine->id_hdr_size);
-
-	/*
-	 * for main thread set parent to ppid from status file. For other
-	 * threads set parent pid to main thread. ie., assume main thread
-	 * spawns all threads in a process
-	*/
-	if (tgid == pid) {
-		event->fork.ppid = ppid;
-		event->fork.ptid = ppid;
-	} else {
-		event->fork.ppid = tgid;
-		event->fork.ptid = tgid;
-	}
-	event->fork.pid  = tgid;
-	event->fork.tid  = pid;
-	event->fork.header.type = PERF_RECORD_FORK;
-	event->fork.header.misc = PERF_RECORD_MISC_FORK_EXEC;
-
-	event->fork.header.size = (sizeof(event->fork) + machine->id_hdr_size);
-
-	if (perf_tool__process_synth_event(tool, event, machine, process) != 0)
-		return -1;
-
-	return 0;
-}
-
-int perf_event__synthesize_mmap_events(struct perf_tool *tool,
-				       union perf_event *event,
-				       pid_t pid, pid_t tgid,
-				       perf_event__handler_t process,
-				       struct machine *machine,
-				       bool mmap_data)
-{
-	char filename[PATH_MAX];
-	FILE *fp;
-	unsigned long long t;
-	bool truncation = false;
-	unsigned long long timeout = proc_map_timeout * 1000000ULL;
-	int rc = 0;
-	const char *hugetlbfs_mnt = hugetlbfs__mountpoint();
-	int hugetlbfs_mnt_len = hugetlbfs_mnt ? strlen(hugetlbfs_mnt) : 0;
-
-	if (machine__is_default_guest(machine))
-		return 0;
-
-	snprintf(filename, sizeof(filename), "%s/proc/%d/task/%d/maps",
-		 machine->root_dir, pid, pid);
-
-	fp = fopen(filename, "r");
-	if (fp == NULL) {
-		/*
-		 * We raced with a task exiting - just return:
-		 */
-		pr_debug("couldn't open %s\n", filename);
-		return -1;
-	}
-
-	event->header.type = PERF_RECORD_MMAP2;
-	t = rdclock();
-
-	while (1) {
-		char bf[BUFSIZ];
-		char prot[5];
-		char execname[PATH_MAX];
-		char anonstr[] = "//anon";
-		unsigned int ino;
-		size_t size;
-		ssize_t n;
-
-		if (fgets(bf, sizeof(bf), fp) == NULL)
-			break;
-
-		if ((rdclock() - t) > timeout) {
-			pr_warning("Reading %s time out. "
-				   "You may want to increase "
-				   "the time limit by --proc-map-timeout\n",
-				   filename);
-			truncation = true;
-			goto out;
-		}
-
-		/* ensure null termination since stack will be reused. */
-		strcpy(execname, "");
-
-		/* 00400000-0040c000 r-xp 00000000 fd:01 41038  /bin/cat */
-		n = sscanf(bf, "%"PRI_lx64"-%"PRI_lx64" %s %"PRI_lx64" %x:%x %u %[^\n]\n",
-		       &event->mmap2.start, &event->mmap2.len, prot,
-		       &event->mmap2.pgoff, &event->mmap2.maj,
-		       &event->mmap2.min,
-		       &ino, execname);
-
-		/*
- 		 * Anon maps don't have the execname.
- 		 */
-		if (n < 7)
-			continue;
-
-		event->mmap2.ino = (u64)ino;
-
-		/*
-		 * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c
-		 */
-		if (machine__is_host(machine))
-			event->header.misc = PERF_RECORD_MISC_USER;
-		else
-			event->header.misc = PERF_RECORD_MISC_GUEST_USER;
-
-		/* map protection and flags bits */
-		event->mmap2.prot = 0;
-		event->mmap2.flags = 0;
-		if (prot[0] == 'r')
-			event->mmap2.prot |= PROT_READ;
-		if (prot[1] == 'w')
-			event->mmap2.prot |= PROT_WRITE;
-		if (prot[2] == 'x')
-			event->mmap2.prot |= PROT_EXEC;
-
-		if (prot[3] == 's')
-			event->mmap2.flags |= MAP_SHARED;
-		else
-			event->mmap2.flags |= MAP_PRIVATE;
-
-		if (prot[2] != 'x') {
-			if (!mmap_data || prot[0] != 'r')
-				continue;
-
-			event->header.misc |= PERF_RECORD_MISC_MMAP_DATA;
-		}
-
-out:
-		if (truncation)
-			event->header.misc |= PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT;
-
-		if (!strcmp(execname, ""))
-			strcpy(execname, anonstr);
-
-		if (hugetlbfs_mnt_len &&
-		    !strncmp(execname, hugetlbfs_mnt, hugetlbfs_mnt_len)) {
-			strcpy(execname, anonstr);
-			event->mmap2.flags |= MAP_HUGETLB;
-		}
-
-		size = strlen(execname) + 1;
-		memcpy(event->mmap2.filename, execname, size);
-		size = PERF_ALIGN(size, sizeof(u64));
-		event->mmap2.len -= event->mmap.start;
-		event->mmap2.header.size = (sizeof(event->mmap2) -
-					(sizeof(event->mmap2.filename) - size));
-		memset(event->mmap2.filename + size, 0, machine->id_hdr_size);
-		event->mmap2.header.size += machine->id_hdr_size;
-		event->mmap2.pid = tgid;
-		event->mmap2.tid = pid;
-
-		if (perf_tool__process_synth_event(tool, event, machine, process) != 0) {
-			rc = -1;
-			break;
-		}
-
-		if (truncation)
-			break;
-	}
-
-	fclose(fp);
-	return rc;
-}
-
-int perf_event__synthesize_modules(struct perf_tool *tool,
-				   perf_event__handler_t process,
-				   struct machine *machine)
-{
-	int rc = 0;
-	struct map *pos;
-	struct maps *maps = machine__kernel_maps(machine);
-	union perf_event *event = zalloc((sizeof(event->mmap) +
-					  machine->id_hdr_size));
-	if (event == NULL) {
-		pr_debug("Not enough memory synthesizing mmap event "
-			 "for kernel modules\n");
-		return -1;
-	}
-
-	event->header.type = PERF_RECORD_MMAP;
-
-	/*
-	 * kernel uses 0 for user space maps, see kernel/perf_event.c
-	 * __perf_event_mmap
-	 */
-	if (machine__is_host(machine))
-		event->header.misc = PERF_RECORD_MISC_KERNEL;
-	else
-		event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
-
-	for (pos = maps__first(maps); pos; pos = map__next(pos)) {
-		size_t size;
-
-		if (!__map__is_kmodule(pos))
-			continue;
-
-		size = PERF_ALIGN(pos->dso->long_name_len + 1, sizeof(u64));
-		event->mmap.header.type = PERF_RECORD_MMAP;
-		event->mmap.header.size = (sizeof(event->mmap) -
-				        (sizeof(event->mmap.filename) - size));
-		memset(event->mmap.filename + size, 0, machine->id_hdr_size);
-		event->mmap.header.size += machine->id_hdr_size;
-		event->mmap.start = pos->start;
-		event->mmap.len   = pos->end - pos->start;
-		event->mmap.pid   = machine->pid;
-
-		memcpy(event->mmap.filename, pos->dso->long_name,
-		       pos->dso->long_name_len + 1);
-		if (perf_tool__process_synth_event(tool, event, machine, process) != 0) {
-			rc = -1;
-			break;
-		}
-	}
-
-	free(event);
-	return rc;
-}
-
-static int __event__synthesize_thread(union perf_event *comm_event,
-				      union perf_event *mmap_event,
-				      union perf_event *fork_event,
-				      union perf_event *namespaces_event,
-				      pid_t pid, int full,
-				      perf_event__handler_t process,
-				      struct perf_tool *tool,
-				      struct machine *machine,
-				      bool mmap_data)
-{
-	char filename[PATH_MAX];
-	DIR *tasks;
-	struct dirent *dirent;
-	pid_t tgid, ppid;
-	int rc = 0;
-
-	/* special case: only send one comm event using passed in pid */
-	if (!full) {
-		tgid = perf_event__synthesize_comm(tool, comm_event, pid,
-						   process, machine);
-
-		if (tgid == -1)
-			return -1;
-
-		if (perf_event__synthesize_namespaces(tool, namespaces_event, pid,
-						      tgid, process, machine) < 0)
-			return -1;
-
-		/*
-		 * send mmap only for thread group leader
-		 * see thread__init_map_groups
-		 */
-		if (pid == tgid &&
-		    perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
-						       process, machine, mmap_data))
-			return -1;
-
-		return 0;
-	}
-
-	if (machine__is_default_guest(machine))
-		return 0;
-
-	snprintf(filename, sizeof(filename), "%s/proc/%d/task",
-		 machine->root_dir, pid);
-
-	tasks = opendir(filename);
-	if (tasks == NULL) {
-		pr_debug("couldn't open %s\n", filename);
-		return 0;
-	}
-
-	while ((dirent = readdir(tasks)) != NULL) {
-		char *end;
-		pid_t _pid;
-
-		_pid = strtol(dirent->d_name, &end, 10);
-		if (*end)
-			continue;
-
-		rc = -1;
-		if (perf_event__prepare_comm(comm_event, _pid, machine,
-					     &tgid, &ppid) != 0)
-			break;
-
-		if (perf_event__synthesize_fork(tool, fork_event, _pid, tgid,
-						ppid, process, machine) < 0)
-			break;
-
-		if (perf_event__synthesize_namespaces(tool, namespaces_event, _pid,
-						      tgid, process, machine) < 0)
-			break;
-
-		/*
-		 * Send the prepared comm event
-		 */
-		if (perf_tool__process_synth_event(tool, comm_event, machine, process) != 0)
-			break;
-
-		rc = 0;
-		if (_pid == pid) {
-			/* process the parent's maps too */
-			rc = perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
-						process, machine, mmap_data);
-			if (rc)
-				break;
-		}
-	}
-
-	closedir(tasks);
-	return rc;
-}
-
-int perf_event__synthesize_thread_map(struct perf_tool *tool,
-				      struct perf_thread_map *threads,
-				      perf_event__handler_t process,
-				      struct machine *machine,
-				      bool mmap_data)
-{
-	union perf_event *comm_event, *mmap_event, *fork_event;
-	union perf_event *namespaces_event;
-	int err = -1, thread, j;
-
-	comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
-	if (comm_event == NULL)
-		goto out;
-
-	mmap_event = malloc(sizeof(mmap_event->mmap2) + machine->id_hdr_size);
-	if (mmap_event == NULL)
-		goto out_free_comm;
-
-	fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size);
-	if (fork_event == NULL)
-		goto out_free_mmap;
-
-	namespaces_event = malloc(sizeof(namespaces_event->namespaces) +
-				  (NR_NAMESPACES * sizeof(struct perf_ns_link_info)) +
-				  machine->id_hdr_size);
-	if (namespaces_event == NULL)
-		goto out_free_fork;
-
-	err = 0;
-	for (thread = 0; thread < threads->nr; ++thread) {
-		if (__event__synthesize_thread(comm_event, mmap_event,
-					       fork_event, namespaces_event,
-					       perf_thread_map__pid(threads, thread), 0,
-					       process, tool, machine,
-					       mmap_data)) {
-			err = -1;
-			break;
-		}
-
-		/*
-		 * comm.pid is set to thread group id by
-		 * perf_event__synthesize_comm
-		 */
-		if ((int) comm_event->comm.pid != perf_thread_map__pid(threads, thread)) {
-			bool need_leader = true;
-
-			/* is thread group leader in thread_map? */
-			for (j = 0; j < threads->nr; ++j) {
-				if ((int) comm_event->comm.pid == perf_thread_map__pid(threads, j)) {
-					need_leader = false;
-					break;
-				}
-			}
-
-			/* if not, generate events for it */
-			if (need_leader &&
-			    __event__synthesize_thread(comm_event, mmap_event,
-						       fork_event, namespaces_event,
-						       comm_event->comm.pid, 0,
-						       process, tool, machine,
-						       mmap_data)) {
-				err = -1;
-				break;
-			}
-		}
-	}
-	free(namespaces_event);
-out_free_fork:
-	free(fork_event);
-out_free_mmap:
-	free(mmap_event);
-out_free_comm:
-	free(comm_event);
-out:
-	return err;
-}
-
-static int __perf_event__synthesize_threads(struct perf_tool *tool,
-					    perf_event__handler_t process,
-					    struct machine *machine,
-					    bool mmap_data,
-					    struct dirent **dirent,
-					    int start,
-					    int num)
-{
-	union perf_event *comm_event, *mmap_event, *fork_event;
-	union perf_event *namespaces_event;
-	int err = -1;
-	char *end;
-	pid_t pid;
-	int i;
-
-	comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
-	if (comm_event == NULL)
-		goto out;
-
-	mmap_event = malloc(sizeof(mmap_event->mmap2) + machine->id_hdr_size);
-	if (mmap_event == NULL)
-		goto out_free_comm;
-
-	fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size);
-	if (fork_event == NULL)
-		goto out_free_mmap;
-
-	namespaces_event = malloc(sizeof(namespaces_event->namespaces) +
-				  (NR_NAMESPACES * sizeof(struct perf_ns_link_info)) +
-				  machine->id_hdr_size);
-	if (namespaces_event == NULL)
-		goto out_free_fork;
-
-	for (i = start; i < start + num; i++) {
-		if (!isdigit(dirent[i]->d_name[0]))
-			continue;
-
-		pid = (pid_t)strtol(dirent[i]->d_name, &end, 10);
-		/* only interested in proper numerical dirents */
-		if (*end)
-			continue;
-		/*
-		 * We may race with exiting thread, so don't stop just because
-		 * one thread couldn't be synthesized.
-		 */
-		__event__synthesize_thread(comm_event, mmap_event, fork_event,
-					   namespaces_event, pid, 1, process,
-					   tool, machine, mmap_data);
-	}
-	err = 0;
-
-	free(namespaces_event);
-out_free_fork:
-	free(fork_event);
-out_free_mmap:
-	free(mmap_event);
-out_free_comm:
-	free(comm_event);
-out:
-	return err;
-}
-
-struct synthesize_threads_arg {
-	struct perf_tool *tool;
-	perf_event__handler_t process;
-	struct machine *machine;
-	bool mmap_data;
-	struct dirent **dirent;
-	int num;
-	int start;
-};
-
-static void *synthesize_threads_worker(void *arg)
-{
-	struct synthesize_threads_arg *args = arg;
-
-	__perf_event__synthesize_threads(args->tool, args->process,
-					 args->machine, args->mmap_data,
-					 args->dirent,
-					 args->start, args->num);
-	return NULL;
-}
-
-int perf_event__synthesize_threads(struct perf_tool *tool,
-				   perf_event__handler_t process,
-				   struct machine *machine,
-				   bool mmap_data,
-				   unsigned int nr_threads_synthesize)
-{
-	struct synthesize_threads_arg *args = NULL;
-	pthread_t *synthesize_threads = NULL;
-	char proc_path[PATH_MAX];
-	struct dirent **dirent;
-	int num_per_thread;
-	int m, n, i, j;
-	int thread_nr;
-	int base = 0;
-	int err = -1;
-
-
-	if (machine__is_default_guest(machine))
-		return 0;
-
-	snprintf(proc_path, sizeof(proc_path), "%s/proc", machine->root_dir);
-	n = scandir(proc_path, &dirent, 0, alphasort);
-	if (n < 0)
-		return err;
-
-	if (nr_threads_synthesize == UINT_MAX)
-		thread_nr = sysconf(_SC_NPROCESSORS_ONLN);
-	else
-		thread_nr = nr_threads_synthesize;
-
-	if (thread_nr <= 1) {
-		err = __perf_event__synthesize_threads(tool, process,
-						       machine, mmap_data,
-						       dirent, base, n);
-		goto free_dirent;
-	}
-	if (thread_nr > n)
-		thread_nr = n;
-
-	synthesize_threads = calloc(sizeof(pthread_t), thread_nr);
-	if (synthesize_threads == NULL)
-		goto free_dirent;
-
-	args = calloc(sizeof(*args), thread_nr);
-	if (args == NULL)
-		goto free_threads;
-
-	num_per_thread = n / thread_nr;
-	m = n % thread_nr;
-	for (i = 0; i < thread_nr; i++) {
-		args[i].tool = tool;
-		args[i].process = process;
-		args[i].machine = machine;
-		args[i].mmap_data = mmap_data;
-		args[i].dirent = dirent;
-	}
-	for (i = 0; i < m; i++) {
-		args[i].num = num_per_thread + 1;
-		args[i].start = i * args[i].num;
-	}
-	if (i != 0)
-		base = args[i-1].start + args[i-1].num;
-	for (j = i; j < thread_nr; j++) {
-		args[j].num = num_per_thread;
-		args[j].start = base + (j - i) * args[i].num;
-	}
-
-	for (i = 0; i < thread_nr; i++) {
-		if (pthread_create(&synthesize_threads[i], NULL,
-				   synthesize_threads_worker, &args[i]))
-			goto out_join;
-	}
-	err = 0;
-out_join:
-	for (i = 0; i < thread_nr; i++)
-		pthread_join(synthesize_threads[i], NULL);
-	free(args);
-free_threads:
-	free(synthesize_threads);
-free_dirent:
-	for (i = 0; i < n; i++)
-		zfree(&dirent[i]);
-	free(dirent);
-
-	return err;
-}
-
 struct process_symbol_args {
 	const char *name;
 	u64	   start;
@@ -899,327 +117,6 @@ int kallsyms__get_function_start(const char *kallsyms_filename,
 	return 0;
 }
 
-int __weak perf_event__synthesize_extra_kmaps(struct perf_tool *tool __maybe_unused,
-					      perf_event__handler_t process __maybe_unused,
-					      struct machine *machine __maybe_unused)
-{
-	return 0;
-}
-
-static int __perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
-						perf_event__handler_t process,
-						struct machine *machine)
-{
-	size_t size;
-	struct map *map = machine__kernel_map(machine);
-	struct kmap *kmap;
-	int err;
-	union perf_event *event;
-
-	if (map == NULL)
-		return -1;
-
-	kmap = map__kmap(map);
-	if (!kmap->ref_reloc_sym)
-		return -1;
-
-	/*
-	 * We should get this from /sys/kernel/sections/.text, but till that is
-	 * available use this, and after it is use this as a fallback for older
-	 * kernels.
-	 */
-	event = zalloc((sizeof(event->mmap) + machine->id_hdr_size));
-	if (event == NULL) {
-		pr_debug("Not enough memory synthesizing mmap event "
-			 "for kernel modules\n");
-		return -1;
-	}
-
-	if (machine__is_host(machine)) {
-		/*
-		 * kernel uses PERF_RECORD_MISC_USER for user space maps,
-		 * see kernel/perf_event.c __perf_event_mmap
-		 */
-		event->header.misc = PERF_RECORD_MISC_KERNEL;
-	} else {
-		event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
-	}
-
-	size = snprintf(event->mmap.filename, sizeof(event->mmap.filename),
-			"%s%s", machine->mmap_name, kmap->ref_reloc_sym->name) + 1;
-	size = PERF_ALIGN(size, sizeof(u64));
-	event->mmap.header.type = PERF_RECORD_MMAP;
-	event->mmap.header.size = (sizeof(event->mmap) -
-			(sizeof(event->mmap.filename) - size) + machine->id_hdr_size);
-	event->mmap.pgoff = kmap->ref_reloc_sym->addr;
-	event->mmap.start = map->start;
-	event->mmap.len   = map->end - event->mmap.start;
-	event->mmap.pid   = machine->pid;
-
-	err = perf_tool__process_synth_event(tool, event, machine, process);
-	free(event);
-
-	return err;
-}
-
-int perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
-				       perf_event__handler_t process,
-				       struct machine *machine)
-{
-	int err;
-
-	err = __perf_event__synthesize_kernel_mmap(tool, process, machine);
-	if (err < 0)
-		return err;
-
-	return perf_event__synthesize_extra_kmaps(tool, process, machine);
-}
-
-int perf_event__synthesize_thread_map2(struct perf_tool *tool,
-				      struct perf_thread_map *threads,
-				      perf_event__handler_t process,
-				      struct machine *machine)
-{
-	union perf_event *event;
-	int i, err, size;
-
-	size  = sizeof(event->thread_map);
-	size +=	threads->nr * sizeof(event->thread_map.entries[0]);
-
-	event = zalloc(size);
-	if (!event)
-		return -ENOMEM;
-
-	event->header.type = PERF_RECORD_THREAD_MAP;
-	event->header.size = size;
-	event->thread_map.nr = threads->nr;
-
-	for (i = 0; i < threads->nr; i++) {
-		struct perf_record_thread_map_entry *entry = &event->thread_map.entries[i];
-		char *comm = perf_thread_map__comm(threads, i);
-
-		if (!comm)
-			comm = (char *) "";
-
-		entry->pid = perf_thread_map__pid(threads, i);
-		strncpy((char *) &entry->comm, comm, sizeof(entry->comm));
-	}
-
-	err = process(tool, event, NULL, machine);
-
-	free(event);
-	return err;
-}
-
-static void synthesize_cpus(struct cpu_map_entries *cpus,
-			    struct perf_cpu_map *map)
-{
-	int i;
-
-	cpus->nr = map->nr;
-
-	for (i = 0; i < map->nr; i++)
-		cpus->cpu[i] = map->map[i];
-}
-
-static void synthesize_mask(struct perf_record_record_cpu_map *mask,
-			    struct perf_cpu_map *map, int max)
-{
-	int i;
-
-	mask->nr = BITS_TO_LONGS(max);
-	mask->long_size = sizeof(long);
-
-	for (i = 0; i < map->nr; i++)
-		set_bit(map->map[i], mask->mask);
-}
-
-static size_t cpus_size(struct perf_cpu_map *map)
-{
-	return sizeof(struct cpu_map_entries) + map->nr * sizeof(u16);
-}
-
-static size_t mask_size(struct perf_cpu_map *map, int *max)
-{
-	int i;
-
-	*max = 0;
-
-	for (i = 0; i < map->nr; i++) {
-		/* bit possition of the cpu is + 1 */
-		int bit = map->map[i] + 1;
-
-		if (bit > *max)
-			*max = bit;
-	}
-
-	return sizeof(struct perf_record_record_cpu_map) + BITS_TO_LONGS(*max) * sizeof(long);
-}
-
-void *cpu_map_data__alloc(struct perf_cpu_map *map, size_t *size, u16 *type, int *max)
-{
-	size_t size_cpus, size_mask;
-	bool is_dummy = perf_cpu_map__empty(map);
-
-	/*
-	 * Both array and mask data have variable size based
-	 * on the number of cpus and their actual values.
-	 * The size of the 'struct perf_record_cpu_map_data' is:
-	 *
-	 *   array = size of 'struct cpu_map_entries' +
-	 *           number of cpus * sizeof(u64)
-	 *
-	 *   mask  = size of 'struct perf_record_record_cpu_map' +
-	 *           maximum cpu bit converted to size of longs
-	 *
-	 * and finaly + the size of 'struct perf_record_cpu_map_data'.
-	 */
-	size_cpus = cpus_size(map);
-	size_mask = mask_size(map, max);
-
-	if (is_dummy || (size_cpus < size_mask)) {
-		*size += size_cpus;
-		*type  = PERF_CPU_MAP__CPUS;
-	} else {
-		*size += size_mask;
-		*type  = PERF_CPU_MAP__MASK;
-	}
-
-	*size += sizeof(struct perf_record_cpu_map_data);
-	*size = PERF_ALIGN(*size, sizeof(u64));
-	return zalloc(*size);
-}
-
-void cpu_map_data__synthesize(struct perf_record_cpu_map_data *data, struct perf_cpu_map *map,
-			      u16 type, int max)
-{
-	data->type = type;
-
-	switch (type) {
-	case PERF_CPU_MAP__CPUS:
-		synthesize_cpus((struct cpu_map_entries *) data->data, map);
-		break;
-	case PERF_CPU_MAP__MASK:
-		synthesize_mask((struct perf_record_record_cpu_map *)data->data, map, max);
-	default:
-		break;
-	};
-}
-
-static struct perf_record_cpu_map *cpu_map_event__new(struct perf_cpu_map *map)
-{
-	size_t size = sizeof(struct perf_record_cpu_map);
-	struct perf_record_cpu_map *event;
-	int max;
-	u16 type;
-
-	event = cpu_map_data__alloc(map, &size, &type, &max);
-	if (!event)
-		return NULL;
-
-	event->header.type = PERF_RECORD_CPU_MAP;
-	event->header.size = size;
-	event->data.type   = type;
-
-	cpu_map_data__synthesize(&event->data, map, type, max);
-	return event;
-}
-
-int perf_event__synthesize_cpu_map(struct perf_tool *tool,
-				   struct perf_cpu_map *map,
-				   perf_event__handler_t process,
-				   struct machine *machine)
-{
-	struct perf_record_cpu_map *event;
-	int err;
-
-	event = cpu_map_event__new(map);
-	if (!event)
-		return -ENOMEM;
-
-	err = process(tool, (union perf_event *) event, NULL, machine);
-
-	free(event);
-	return err;
-}
-
-int perf_event__synthesize_stat_config(struct perf_tool *tool,
-				       struct perf_stat_config *config,
-				       perf_event__handler_t process,
-				       struct machine *machine)
-{
-	struct perf_record_stat_config *event;
-	int size, i = 0, err;
-
-	size  = sizeof(*event);
-	size += (PERF_STAT_CONFIG_TERM__MAX * sizeof(event->data[0]));
-
-	event = zalloc(size);
-	if (!event)
-		return -ENOMEM;
-
-	event->header.type = PERF_RECORD_STAT_CONFIG;
-	event->header.size = size;
-	event->nr          = PERF_STAT_CONFIG_TERM__MAX;
-
-#define ADD(__term, __val)					\
-	event->data[i].tag = PERF_STAT_CONFIG_TERM__##__term;	\
-	event->data[i].val = __val;				\
-	i++;
-
-	ADD(AGGR_MODE,	config->aggr_mode)
-	ADD(INTERVAL,	config->interval)
-	ADD(SCALE,	config->scale)
-
-	WARN_ONCE(i != PERF_STAT_CONFIG_TERM__MAX,
-		  "stat config terms unbalanced\n");
-#undef ADD
-
-	err = process(tool, (union perf_event *) event, NULL, machine);
-
-	free(event);
-	return err;
-}
-
-int perf_event__synthesize_stat(struct perf_tool *tool,
-				u32 cpu, u32 thread, u64 id,
-				struct perf_counts_values *count,
-				perf_event__handler_t process,
-				struct machine *machine)
-{
-	struct perf_record_stat event;
-
-	event.header.type = PERF_RECORD_STAT;
-	event.header.size = sizeof(event);
-	event.header.misc = 0;
-
-	event.id        = id;
-	event.cpu       = cpu;
-	event.thread    = thread;
-	event.val       = count->val;
-	event.ena       = count->ena;
-	event.run       = count->run;
-
-	return process(tool, (union perf_event *) &event, NULL, machine);
-}
-
-int perf_event__synthesize_stat_round(struct perf_tool *tool,
-				      u64 evtime, u64 type,
-				      perf_event__handler_t process,
-				      struct machine *machine)
-{
-	struct perf_record_stat_round event;
-
-	event.header.type = PERF_RECORD_STAT_ROUND;
-	event.header.size = sizeof(event);
-	event.header.misc = 0;
-
-	event.time = evtime;
-	event.type = type;
-
-	return process(tool, (union perf_event *) &event, NULL, machine);
-}
-
 void perf_event__read_stat_config(struct perf_stat_config *config,
 				  struct perf_record_stat_config *event)
 {