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2019-03-01perf auxtrace: Improve address filter error message when there is no DSOAdrian Hunter1-1/+2
The message does not indicate the possibility that the symbol is not found because the file does not exist. Before: $ perf record -e intel_pt//u --filter 'filter strcmp / strcpy @ foo ' ls Symbol 'strcmp' not found. Note that symbols must be functions. Failed to parse address filter: 'filter strcmp / strcpy @ foo ' Filter format is: filter|start|stop|tracestop <start symbol or address> [/ <end symbol or size>] [@<file name>] Where multiple filters are separated by space or comma. After: $ perf record -e intel_pt//u --filter 'filter strcmp / strcpy @ foo ' ls File 'foo' not found or has no symbols. Symbol 'strcmp' not found. Note that symbols must be functions. Failed to parse address filter: 'filter strcmp / strcpy @ foo ' Filter format is: filter|start|stop|tracestop <start symbol or address> [/ <end symbol or size>] [@<file name>] Where multiple filters are separated by space or comma. Reported-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: https://lkml.kernel.org/n/tip-dvngzxd0jkplzw1ary69dilb@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-03-01perf time-utils: Refactor time range parsing codeJin Yao4-62/+72
Jiri points out that we don't need any time checking and time string parsing if the --time option is not set. That makes sense. This patch refactors the time range parsing code, move the duplicated code from perf report and perf script to time_utils and check if --time option is set before parsing the time string. This patch is no logic change expected. So the usage of --time is same as before. For example: Select the first and second 10% time slices: perf report --time 10%/1,10%/2 perf script --time 10%/1,10%/2 Select the slices from 0% to 10% and from 30% to 40%: perf report --time 0%-10%,30%-40% perf script --time 0%-10%,30%-40% Select the time slices from timestamp 3971 to 3973 perf report --time 3971,3973 perf script --time 3971,3973 Committer testing: Using the above examples, check before and after to see if it remains the same: $ perf record -F 10000 -- find . -name "*.[ch]" -exec cat {} + > /dev/null [ perf record: Woken up 3 times to write data ] [ perf record: Captured and wrote 1.626 MB perf.data (42392 samples) ] $ $ perf report --time 10%/1,10%/2 > /tmp/report.before.1 $ perf script --time 10%/1,10%/2 > /tmp/script.before.1 $ perf report --time 0%-10%,30%-40% > /tmp/report.before.2 $ perf script --time 0%-10%,30%-40% > /tmp/script.before.2 $ perf report --time 180457.375844,180457.377717 > /tmp/report.before.3 $ perf script --time 180457.375844,180457.377717 > /tmp/script.before.3 For example, the 3rd test produces this slice: $ cat /tmp/script.before.3 cat 3147 180457.375844: 2143 cycles:uppp: 7f79362590d9 cfree@GLIBC_2.2.5+0x9 (/usr/lib64/libc-2.28.so) cat 3147 180457.375986: 2245 cycles:uppp: 558b70f3d86e [unknown] (/usr/bin/cat) cat 3147 180457.376012: 2164 cycles:uppp: 7f7936257430 _int_malloc+0x8c0 (/usr/lib64/libc-2.28.so) cat 3147 180457.376140: 2921 cycles:uppp: 558b70f3a554 [unknown] (/usr/bin/cat) cat 3147 180457.376296: 2844 cycles:uppp: 7f7936258abe malloc+0x4e (/usr/lib64/libc-2.28.so) cat 3147 180457.376431: 2717 cycles:uppp: 558b70f3b0ca [unknown] (/usr/bin/cat) cat 3147 180457.376667: 2630 cycles:uppp: 558b70f3d86e [unknown] (/usr/bin/cat) cat 3147 180457.376795: 2442 cycles:uppp: 7f79362bff55 read+0x15 (/usr/lib64/libc-2.28.so) cat 3147 180457.376927: 2376 cycles:uppp: ffffffff9aa00163 [unknown] ([unknown]) cat 3147 180457.376954: 2307 cycles:uppp: 7f7936257438 _int_malloc+0x8c8 (/usr/lib64/libc-2.28.so) cat 3147 180457.377116: 3091 cycles:uppp: 7f7936258a70 malloc+0x0 (/usr/lib64/libc-2.28.so) cat 3147 180457.377362: 2945 cycles:uppp: 558b70f3a3b0 [unknown] (/usr/bin/cat) cat 3147 180457.377517: 2727 cycles:uppp: 558b70f3a9aa [unknown] (/usr/bin/cat) $ Install 'coreutils-debuginfo' to see cat's guts (symbols), but then, the above chunk translates into this 'perf report' output: $ cat /tmp/report.before.3 # To display the perf.data header info, please use --header/--header-only options. # # # Total Lost Samples: 0 # # Samples: 13 of event 'cycles:uppp' (time slices: 180457.375844,180457.377717) # Event count (approx.): 33552 # # Overhead Command Shared Object Symbol # ........ ....... ................ ...................... # 17.69% cat libc-2.28.so [.] malloc 14.53% cat cat [.] 0x000000000000586e 13.33% cat libc-2.28.so [.] _int_malloc 8.78% cat cat [.] 0x00000000000023b0 8.71% cat cat [.] 0x0000000000002554 8.13% cat cat [.] 0x00000000000029aa 8.10% cat cat [.] 0x00000000000030ca 7.28% cat libc-2.28.so [.] read 7.08% cat [unknown] [k] 0xffffffff9aa00163 6.39% cat libc-2.28.so [.] cfree@GLIBC_2.2.5 # # (Tip: Order by the overhead of source file name and line number: perf report -s srcline) # $ Now lets see after applying this patch, nothing should change: $ perf report --time 10%/1,10%/2 > /tmp/report.after.1 $ perf script --time 10%/1,10%/2 > /tmp/script.after.1 $ perf report --time 0%-10%,30%-40% > /tmp/report.after.2 $ perf script --time 0%-10%,30%-40% > /tmp/script.after.2 $ perf report --time 180457.375844,180457.377717 > /tmp/report.after.3 $ perf script --time 180457.375844,180457.377717 > /tmp/script.after.3 $ diff -u /tmp/report.before.1 /tmp/report.after.1 $ diff -u /tmp/script.before.1 /tmp/script.after.1 $ diff -u /tmp/report.before.2 /tmp/report.after.2 --- /tmp/report.before.2 2019-03-01 11:01:53.526094883 -0300 +++ /tmp/report.after.2 2019-03-01 11:09:18.231770467 -0300 @@ -352,5 +352,5 @@ # -# (Tip: Generate a script for your data: perf script -g <lang>) +# (Tip: Treat branches as callchains: perf report --branch-history) # $ diff -u /tmp/script.before.2 /tmp/script.after.2 $ diff -u /tmp/report.before.3 /tmp/report.after.3 --- /tmp/report.before.3 2019-03-01 11:03:08.890045588 -0300 +++ /tmp/report.after.3 2019-03-01 11:09:40.660224002 -0300 @@ -22,5 +22,5 @@ # -# (Tip: Order by the overhead of source file name and line number: perf report -s srcline) +# (Tip: List events using substring match: perf list <keyword>) # $ diff -u /tmp/script.before.3 /tmp/script.after.3 $ Cool, just the 'perf report' tips changed, QED. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1551435186-6008-1-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-03-01selftests/bpf: add btf_dedup test of FWD/STRUCT resolutionAndrii Nakryiko1-0/+45
This patch adds a btf_dedup test exercising logic of STRUCT<->FWD resolution and validating that STRUCT is not resolved to a FWD. It also forces hash collisions, forcing both FWD and STRUCT to be candidates for each other. Previously this condition caused infinite loop due to FWD pointing to STRUCT and STRUCT pointing to its FWD. Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-03-01btf: fix bug with resolving STRUCT/UNION into corresponding FWDAndrii Nakryiko1-3/+17
When checking available canonical candidates for struct/union algorithm utilizes btf_dedup_is_equiv to determine if candidate is suitable. This check is not enough when candidate is corresponding FWD for that struct/union, because according to equivalence logic they are equivalent. When it so happens that FWD and STRUCT/UNION end in hashing to the same bucket, it's possible to create remapping loop from FWD to STRUCT and STRUCT to same FWD, which will cause btf_dedup() to loop forever. This patch fixes the issue by additionally checking that type and canonical candidate are strictly equal (utilizing btf_equal_struct). Fixes: d5caef5b5655 ("btf: add BTF types deduplication algorithm") Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Song Liu <songliubraving@fb.com> Acked-by: Yonghong Song <yhs@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-03-01btf: allow to customize dedup hash table sizeAndrii Nakryiko2-17/+37
Default size of dedup table (16k) is good enough for most binaries, even typical vmlinux images. But there are cases of binaries with huge amount of BTF types (e.g., allyesconfig variants of kernel), which benefit from having bigger dedup table size to lower amount of unnecessary hash collisions. Tools like pahole, thus, can tune this parameter to reach optimal performance. This change also serves double purpose of allowing tests to force hash collisions to test some corner cases, used in follow up patch. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Yonghong Song <yhs@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-03-01libbpf: fix formatting for btf_ext__get_raw_dataAndrii Nakryiko1-1/+1
Fix invalid formatting of pointer arg. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-03-01selftests/bpf: fix btf_dedup testing codeAndrii Nakryiko2-2/+3
btf_dedup testing code doesn't account for length of struct btf_header when calculating the start of a string section. This patch fixes this problem. Fixes: 49b57e0d01db ("tools/bpf: remove btf__get_strings() superseded by raw data API") Signed-off-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Song Liu <songliubraving@fb.com> Acked-by: Yonghong Song <yhs@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-03-01tools/libbpf: signedness bug in btf_dedup_ref_type()Dan Carpenter1-1/+2
The "ref_type_id" variable needs to be signed for the error handling to work. Fixes: d5caef5b5655 ("btf: add BTF types deduplication algorithm") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-03-01tools: libbpf: make sure readelf shows full names in build checksJakub Kicinski1-2/+2
readelf truncates its output by default to attempt to make it more readable. This can lead to function names getting aliased if they differ late in the string. Use --wide parameter to avoid truncation. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Acked-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-03-01tools: libbpf: add a correctly named define for map iterationJakub Kicinski5-10/+11
For historical reasons the helper to loop over maps in an object is called bpf_map__for_each while it really should be called bpf_object__for_each_map. Rename and add a correctly named define for backward compatibility. Switch all in-tree users to the correct name (Quentin). Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-03-01selftests/bpf: use __bpf_constant_htons in test_prog.c for flow dissectorStanislav Fomichev1-2/+2
Older GCC (<4.8) isn't smart enough to optimize !__builtin_constant_p() branch in bpf_htons. I recently fixed it for pkt_v4 and pkt_v6 in commit a0517a0f7ef23 ("selftests/bpf: use __bpf_constant_htons in test_prog.c"), but later added another bunch of bpf_htons in commit bf0f0fd939451 ("selftests/bpf: add simple BPF_PROG_TEST_RUN examples for flow dissector"). Fixes: bf0f0fd939451 ("selftests/bpf: add simple BPF_PROG_TEST_RUN examples for flow dissector") Signed-off-by: Stanislav Fomichev <sdf@google.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-03-01bpf: add missing entries to bpf_helpers.hWillem de Bruijn1-0/+30
This header defines the BPF functions enumerated in uapi/linux.bpf.h in a callable format. Expand to include all registered functions. Signed-off-by: Willem de Bruijn <willemb@google.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-02-28selftests: rtnetlink: use internal netns switch for ip commandsDavid Ahern1-61/+61
'ip' can switch network namespaces internally and then run a given command relative to that namespace without the need to fork and exec another ip instance. Update all references of the form: ip netns exec "$testns" ip ... to ip -netns "$testns" ... Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-28tools lib traceevent: Fix buffer overflow in arg_evalTony Jones1-1/+1
Fix buffer overflow observed when running perf test. The overflow is when trying to evaluate "1ULL << (64 - 1)" which is resulting in -9223372036854775808 which overflows the 20 character buffer. If is possible this bug has been reported before but I still don't see any fix checked in: See: https://www.spinics.net/lists/linux-perf-users/msg07714.html Reported-by: Michael Sartain <mikesart@fastmail.com> Reported-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: Tony Jones <tonyj@suse.de> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Fixes: f7d82350e597 ("tools/events: Add files to create libtraceevent.a") Link: http://lkml.kernel.org/r/20190228015532.8941-1-tonyj@suse.de Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-28perf probe: Clarify error message about not finding kernel modules debuginfoArnaldo Carvalho de Melo1-3/+6
'perf probe' supports using just the kernel module name, but that will work only when the module is loaded, or using the full pathname to the file with the DWARF debug info, but the warning was cryptic: Before: # perf probe -m cls_flower -L fl_change Failed to find the path for cls_flower: No such file or directory Error: Failed to show lines. # After: # perf probe -m cls_flower -L fl_change Module cls_flower is not loaded, please specify its full path name. Error: Failed to show lines. # perf probe -m /lib/modules/5.0.0-rc7+/kernel/net/sched/cls_flower.ko -L fl_change | head -7 <fl_change@/home/acme/git/linux/net/sched/cls_flower.c:0> 0 static int fl_change(struct net *net, struct sk_buff *in_skb, struct tcf_proto *tp, unsigned long base, u32 handle, struct nlattr **tca, void **arg, bool ovr, struct netlink_ext_ack *extack) 4 { 5 struct cls_fl_head *head = rtnl_dereference(tp->root); # The behaviour doesn't change when the module is loaded: # modprobe cls_flower # perf probe -m cls_flower -L fl_change | head -7 <fl_change@/home/acme/git/linux/net/sched/cls_flower.c:0> 0 static int fl_change(struct net *net, struct sk_buff *in_skb, struct tcf_proto *tp, unsigned long base, u32 handle, struct nlattr **tca, void **arg, bool ovr, struct netlink_ext_ack *extack) 4 { 5 struct cls_fl_head *head = rtnl_dereference(tp->root); # Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Marcelo Ricardo Leitner <mleitner@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-q4njvk9mshra00jacqjbzfn5@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-28Merge tag 'perf-core-for-mingo-5.1-20190225' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/coreIngo Molnar37-390/+945
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: perf annotate: Wei Li: - Fix getting source line failure perf script: Andi Kleen: - Handle missing fields with -F +... perf data: Jiri Olsa: - Prep work to support per-cpu files in a directory. Intel PT: Adrian Hunter: - Improve thread_stack__no_call_return() - Hide x86 retpolines in thread stacks. - exported SQL viewer refactorings, new 'top calls' report.. Alexander Shishkin: - Copy parent's address filter offsets on clone - Fix address filters for vmas with non-zero offset. Applies to ARM's CoreSight as well. python scripts: Tony Jones: - Python3 support for several 'perf script' python scripts. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-02-28Merge tag 'perf-core-for-mingo-5.1-20190220' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/coreIngo Molnar21-256/+530
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: perf report: He Kuang: - Don't shadow inlined symbol with different addr range. perf script: Jiri Olsa: - Allow +- operator to ask for -F to add/remove fields to the default set, for instance to ask for the removal of the 'cpu' field in tracepoint events, adding 'period' to that kind of events, etc. perf test: Thomas Richter: - Fix scheduler tracepoint signedness of COMM fields failure of 'evsel-tp-sched' test on s390 and other arches. Tommi Rantala: - Skip trace+probe_vfs_getname.sh when 'perf trace' is not built. perf trace: Arnaldo Carvalho de Melo: - Add initial BPF map dumper, initially just for the current, minimal needs of the augmented_raw_syscalls BPF example used to collect pointer args payloads that uses BPF maps for pid and syscall filtering, but will in time have features similar to 'perf stat' --interval-print, --interval-clear, ways to signal from a BPF event that a specific map (or range of that map) should be printed, optionally as a histogram, etc. General: Jiri Olsa: - Add CPU and NUMA topologies classes for further reuse, fixing some issues in the process. - Fixup some warnings and debug levels. - Make rm_rf() remove single file, not just directories. Documentation: Jonas Rabenstein: - Fix HEADER_CMDLINE description in perf.data documentation. - Fix documentation of the Flags section in perf.data. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-02-28Merge branch 'linus' into perf/core, to pick up fixesIngo Molnar18-38/+1115
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-02-28lockdep/lib/tests: Test dynamic key registrationBart Van Assche3-5/+17
Make sure that the lockdep_register_key() and lockdep_unregister_key() code is tested when running the lockdep tests. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Waiman Long <longman@redhat.com> Cc: Will Deacon <will.deacon@arm.com> Cc: johannes.berg@intel.com Cc: tj@kernel.org Link: https://lkml.kernel.org/r/20190214230058.196511-24-bvanassche@acm.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-02-28lockdep/lib/tests: Fix run_tests.shBart Van Assche1-3/+3
Apparently the execute bits were set for the tests/*.sh scripts on my test setup but these are not set in the kernel tree. Fix this by adding the interpreter path in front of the script paths. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Waiman Long <longman@redhat.com> Cc: Will Deacon <will.deacon@arm.com> Cc: johannes.berg@intel.com Cc: tj@kernel.org Fixes: 5ecb8e94b494 ("tools/lib/lockdep/tests: Improve testing accuracy") # v5.0-rc1 Link: https://lkml.kernel.org/r/20190214230058.196511-23-bvanassche@acm.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-02-28Merge branch 'linus' into locking/core, to pick up fixesIngo Molnar29-68/+1203
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-02-27selftests: pmtu: add explicit tests for PMTU exceptions cleanupPaolo Abeni1-1/+67
Add a couple of new tests, explicitly checking that the kernel timely releases PMTU exceptions on related device removal. This is mostly a regression test vs the issue fixed by commit f5b51fe804ec ("ipv6: route: purge exception on removal") Only 2 new test cases have been added, instead of extending all the existing ones, because the reproducer requires executing several commands and would slow down too much the tests otherwise. v2 -> v3: - more cleanup, still from Stefano v1 -> v2: - several script cleanups, as suggested by Stefano Signed-off-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-27selftests: pmtu: disable DAD in all namespacesPaolo Abeni1-15/+13
Otherwise, the configured IPv6 address could be still "tentative" at test time, possibly causing tests failures. We can also drop some sleep along the code and decrease the timeout for most commands so that the test runtime decreases. v1 -> v2: - fix comment (Stefano) Fixes: d1f1b9cbf34c ("selftests: net: Introduce first PMTU test") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-27tools/bpf: selftests: add map lookup to test_map_in_map bpf progYonghong Song1-0/+4
The bpf_map_lookup_elem is added in the bpf program. Without previous patch, the test change will trigger the following error: $ ./test_maps ... ; value_p = bpf_map_lookup_elem(map, &key); 20: (bf) r1 = r7 21: (bf) r2 = r8 22: (85) call bpf_map_lookup_elem#1 ; if (!value_p || *value_p != 123) 23: (15) if r0 == 0x0 goto pc+16 R0=map_value(id=2,off=0,ks=4,vs=4,imm=0) R6=inv1 R7=map_ptr(id=0,off=0,ks=4,vs=4,imm=0) R8=fp-8,call_-1 R10=fp0,call_-1 fp-8=mmmmmmmm ; if (!value_p || *value_p != 123) 24: (61) r1 = *(u32 *)(r0 +0) R0=map_value(id=2,off=0,ks=4,vs=4,imm=0) R6=inv1 R7=map_ptr(id=0,off=0,ks=4,vs=4,imm=0) R8=fp-8,call_-1 R10=fp0,call_-1 fp-8=mmmmmmmm bpf_spin_lock cannot be accessed directly by load/store With the kernel fix in the previous commit, the error goes away. Signed-off-by: Yonghong Song <yhs@fb.com> Acked-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-02-27tools/bpftool: recognize bpf_prog_info run_time_ns and run_cntAlexei Starovoitov2-1/+10
$ bpftool p s 1: kprobe tag a56587d488d216c9 gpl run_time_ns 79786 run_cnt 8 loaded_at 2019-02-22T12:22:51-0800 uid 0 xlated 352B not jited memlock 4096B $ bpftool --json --pretty p s [{ "id": 1, "type": "kprobe", "tag": "a56587d488d216c9", "gpl_compatible": true, "run_time_ns": 79786, "run_cnt": 8, "loaded_at": 1550866971, "uid": 0, "bytes_xlated": 352, "jited": false, "bytes_memlock": 4096 } ] Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-02-27tools/bpf: sync bpf.h into toolsAlexei Starovoitov1-0/+2
sync bpf.h into tools directory Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-02-27netfilter: nat: merge nf_nat_ipv4,6 into nat coreFlorian Westphal1-2/+1
before: text data bss dec hex filename 16566 1576 4136 22278 5706 nf_nat.ko 3598 844 0 4442 115a nf_nat_ipv6.ko 3187 844 0 4031 fbf nf_nat_ipv4.ko after: text data bss dec hex filename 22948 1612 4136 28696 7018 nf_nat.ko ... with ipv4/v6 nat now provided directly via nf_nat.ko. Also changes: ret = nf_nat_ipv4_fn(priv, skb, state); if (ret != NF_DROP && ret != NF_STOLEN && into if (ret != NF_ACCEPT) return ret; everywhere. The nat hooks never should return anything other than ACCEPT or DROP (and the latter only in rare error cases). The original code uses multi-line ANDing including assignment-in-if: if (ret != NF_DROP && ret != NF_STOLEN && !(IPCB(skb)->flags & IPSKB_XFRM_TRANSFORMED) && (ct = nf_ct_get(skb, &ctinfo)) != NULL) { I removed this while moving, breaking those in separate conditionals and moving the assignments into extra lines. checkpatch still generates some warnings: 1. Overly long lines (of moved code). Breaking them is even more ugly. so I kept this as-is. 2. use of extern function declarations in a .c file. This is necessary evil, we must call nf_nat_l3proto_register() from the nat core now. All l3proto related functions are removed later in this series, those prototypes are then removed as well. v2: keep empty nf_nat_ipv6_csum_update stub for CONFIG_IPV6=n case. v3: remove IS_ENABLED(NF_NAT_IPV4/6) tests, NF_NAT_IPVx toggles are removed here. v4: also get rid of the assignments in conditionals. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2019-02-26tc-testing: gitignore, ignore local tdc config fileVlad Buslov1-0/+1
Comment in tdc_config.py recommends putting customizations in tdc_config_local.py file that wasn't included in gitignore. Add the local config file to gitignore. Signed-off-by: Vlad Buslov <vladbu@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-26tools: selftests: rtnetlink: add testcases for vxlan flag setsRoopa Prabhu1-0/+52
This patch extends rtnetlink.sh to cover some vxlan flag netlink attribute sets. Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-26selftests/powerpc: Remove duplicate headerMichael Ellerman1-1/+0
Remove duplicate headers which are included twice. Signed-off-by: Sabyasachi Gupta <sabyasachi.linux@gmail.com> Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> [mpe: Split out of larger patch] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-02-25libbpf: add support for using AF_XDP socketsMagnus Karlsson8-3/+1080
This commit adds AF_XDP support to libbpf. The main reason for this is to facilitate writing applications that use AF_XDP by offering higher-level APIs that hide many of the details of the AF_XDP uapi. This is in the same vein as libbpf facilitates XDP adoption by offering easy-to-use higher level interfaces of XDP functionality. Hopefully this will facilitate adoption of AF_XDP, make applications using it simpler and smaller, and finally also make it possible for applications to benefit from optimizations in the AF_XDP user space access code. Previously, people just copied and pasted the code from the sample application into their application, which is not desirable. The interface is composed of two parts: * Low-level access interface to the four rings and the packet * High-level control plane interface for creating and setting up umems and af_xdp sockets as well as a simple XDP program. Tested-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-02-25selftests/bpf: make sure signal interrupts BPF_PROG_TEST_RUNStanislav Fomichev1-0/+44
Simple test that I used to reproduce the issue in the previous commit: Do BPF_PROG_TEST_RUN with max iterations, each program is 4096 simple move instructions. File alarm in 0.1 second and check that bpf_prog_test_run is interrupted (i.e. test doesn't hang). Note: reposting this for bpf-next to avoid linux-next conflict. In this version I test both BPF_PROG_TYPE_SOCKET_FILTER (which uses generic bpf_test_run implementation) and BPF_PROG_TYPE_FLOW_DISSECTOR (which has it own loop with preempt handling in bpf_prog_test_run_flow_dissector). Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-02-25perf script python: Add Python3 support to syscall-counts-by-pid.pyTony Jones1-10/+12
Support both Python2 and Python3 in the syscall-counts-by-pid.py script There may be differences in the ordering of output lines due to differences in dictionary ordering etc. However the format within lines should be unchanged. The use of 'from __future__' implies the minimum supported Python2 version is now v2.6 Signed-off-by: Tony Jones <tonyj@suse.de> Link: http://lkml.kernel.org/r/20190222230619.17887-15-tonyj@suse.de Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-25perf script python: Add Python3 support to syscall-counts.pyTony Jones1-8/+10
Support both Python2 and Python3 in the syscall-counts.py script There may be differences in the ordering of output lines due to differences in dictionary ordering etc. However the format within lines should be unchanged. The use of 'from __future__' implies the minimum supported Python2 version is now v2.6 Signed-off-by: Tony Jones <tonyj@suse.de> Link: http://lkml.kernel.org/r/20190222230619.17887-14-tonyj@suse.de Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-25perf script python: Add Python3 support to stat-cpi.pyTony Jones1-4/+6
Support both Python2 and Python3 in the stat-cpi.py script There may be differences in the ordering of output lines due to differences in dictionary ordering etc. However the format within lines should be unchanged. The use of 'from __future__' implies the minimum supported Python2 version is now v2.6 Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20190222230619.17887-13-tonyj@suse.de Signed-off-by: Tony Jones <tonyj@suse.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-25perf script python: Add Python3 support to stackcollapse.pyTony Jones1-3/+4
Support both Python2 and Python3 in the stackcollapse.py script There may be differences in the ordering of output lines due to differences in dictionary ordering etc. However the format within lines should be unchanged. The use of 'from __future__' implies the minimum supported Python2 version is now v2.6 Signed-off-by: Tony Jones <tonyj@suse.de> Cc: Paolo Bonzini <pbonzini@redhat.com> <pbonzini@redhat.com> Link: http://lkml.kernel.org/r/20190222230619.17887-12-tonyj@suse.de Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-25perf script python: Add Python3 support to sctop.pyTony Jones1-8/+16
Support both Python2 and Python3 in the sctop.py script There may be differences in the ordering of output lines due to differences in dictionary ordering etc. However the format within lines should be unchanged. The use of 'from __future__' implies the minimum supported Python2 version is now v2.6 Signed-off-by: Tony Jones <tonyj@suse.de> Cc: Tom Zanussi <tzanussi@gmail.com> Link: http://lkml.kernel.org/r/20190222230619.17887-11-tonyj@suse.de Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-25perf script python: Add Python3 support to powerpc-hcalls.pyTony Jones1-8/+10
Support both Python2 and Python3 in the powerpc-hcalls.py script There may be differences in the ordering of output lines due to differences in dictionary ordering etc. However the format within lines should be unchanged. The use of 'from __future__' implies the minimum supported Python2 version is now v2.6 Signed-off-by: Tony Jones <tonyj@suse.de> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Link: http://lkml.kernel.org/r/20190222230619.17887-10-tonyj@suse.de Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-25perf script python: Add Python3 support to net_dropmonitor.pyTony Jones1-4/+6
Support both Python2 and Python3 in the net_dropmonitor.py script There may be differences in the ordering of output lines due to differences in dictionary ordering etc. However the format within lines should be unchanged. The use of 'from __future__' implies the minimum supported Python2 version is now v2.6 Signed-off-by: Tony Jones <tonyj@suse.de> Acked-by: Neil Horman <nhorman@tuxdriver.com> Link: http://lkml.kernel.org/r/20190222230619.17887-9-tonyj@suse.de Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-25perf script python: Add Python3 support to mem-phys-addr.pyTony Jones1-10/+14
Support both Python2 and Python3 in the mem-phys-addr.py script There may be differences in the ordering of output lines due to differences in dictionary ordering etc. However the format within lines should be unchanged. The use of 'from __future__' implies the minimum supported Python2 version is now v2.6 Signed-off-by: Tony Jones <tonyj@suse.de> Link: http://lkml.kernel.org/r/20190222230619.17887-8-tonyj@suse.de Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-25perf script python: Add Python3 support to failed-syscalls-by-pid.pyTony Jones1-10/+11
Support both Python2 and Python3 in the failed-syscalls-by-pid.py script There may be differences in the ordering of output lines due to differences in dictionary ordering etc. However the format within lines should be unchanged. The use of 'from __future__' implies the minimum supported Python2 version is now v2.6 Signed-off-by: Tony Jones <tonyj@suse.de> Cc: Tom Zanussi <tzanussi@gmail.com> Link: http://lkml.kernel.org/r/20190222230619.17887-5-tonyj@suse.de Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-25perf script python: Add Python3 support to netdev-times.pyTony Jones1-40/+42
Support both Python2 and Python3 in the netdev-times.py script There may be differences in the ordering of output lines due to differences in dictionary ordering etc. However the format within lines should be unchanged. The use of 'from __future__' implies the minimum supported Python2 version is now v2.6. Signed-off-by: Tony Jones <tonyj@suse.de> Cc: Sanagi Koki <sanagi.koki@jp.fujitsu.com> Link: http://lkml.kernel.org/r/20190222230619.17887-2-tonyj@suse.de Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-25selftests/ftrace: Handle the absence of tputJuerg Haefliger1-2/+2
In environments where tput is not available, we get the following error $ ./ftracetest: 163: [: Illegal number: because ncolors is an empty string. Fix that by setting it to 0 if the tput command fails. Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Juerg Haefliger <juergh@canonical.com> Signed-off-by: Shuah Khan <shuah@kernel.org>
2019-02-25perf tools: Add perf_exe() helper to find perf binaryAndi Kleen3-9/+15
Also convert one existing user. Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/20190224153722.27020-9-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-25perf script: Handle missing fields with -F +..Andi Kleen1-3/+7
When using -F + syntax to add a field the existing defaults are currently all marked user_set. This can cause errors when some field is missing in the perf.data This patch tracks the actually user set fields separately, so that we don't error out in this case. Before: % perf record true % perf script -F +metric Samples for 'cycles:ppp' event do not have CPU attribute set. Cannot print 'cpu' field. % After: 5 perf record true % perf script -F +metric perf 28936 278636.237688: 1 cycles:ppp: ffffffff8117da99 perf_event_exec+0x59 (/lib/modules/4.20.0-odilo/build/vmlinux) ... % Signed-off-by: Andi Kleen <ak@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/20190224153722.27020-2-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-25perf data: Add perf_data__open_dir_data functionJiri Olsa2-0/+60
Add perf_data__open_dir_data to open files inside 'struct perf_data' path directory: static int perf_data__open_dir(struct perf_data *data); Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/20190224190656.30163-10-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-25perf data: Add perf_data__(create_dir|close_dir) functionsJiri Olsa2-0/+55
Add perf_data__create_dir() to create nr files inside 'struct perf_data' path directory: int perf_data__create_dir(struct perf_data *data, int nr); and function to close that data: void perf_data__close_dir(struct perf_data *data); Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/20190224190656.30163-9-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-25perf data: Fail check_backup in case of errorJiri Olsa1-3/+18
And display the error message from removing the old data file: $ perf record ls Can't remove old data: Permission denied (perf.data.old) Perf session creation failed. $ perf record ls Can't remove old data: Unknown file found (perf.data.old) Perf session creation failed. Not sure how to make fail the rename (after we successfully remove the destination file/dir) to show the message, anyway let's have it there. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/20190224190656.30163-8-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-25perf data: Make check_backup work over directoriesJiri Olsa1-4/+7
Change check_backup() to call rm_rf_perf_data() instead of unlink() to work over directory paths. Also move the call earlier in the code, before we fork for file/dir, so it can backup also directory data. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/20190224190656.30163-7-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-25perf tools: Add rm_rf_perf_data functionJiri Olsa2-0/+12
To remove perf.data including the directory, with checking on expected files and no other directories inside. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Suggested-by: Andi Kleen <ak@linux.intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/20190224190656.30163-4-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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