diff options
| author | Wang Nan <[email protected]> | 2016-10-08 04:16:25 +0000 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <[email protected]> | 2016-10-17 11:24:18 -0300 |
| commit | 2d470b62fa24f8d0024e8d392d28814c287ee1f1 (patch) | |
| tree | c7d167b43e9c5f4fa06a2b1b6c18b7c9d46999dc | |
| parent | f957a5308dbbdf67aa4f8ac3233a61e802bd2373 (diff) | |
perf jevents: Handle events including .c and .o
This patch helps with Sukadev's vendor event tree where such events can happen.
>From Andi Kleen:
Any event including a .c/.o/.bpf currently triggers BPF compilation or loading
and then an error. This can happen for some Intel vendor events, which cannot
be used.
This patch fixes this problem by forbidding BPF file patch containing '{', '}'
and ',', make sure flex consumes the leading '{', instead of matching it using
a BPF file path.
Tested result:
$ perf stat -e '{unc_p_clockticks,unc_p_power_state_occupancy.cores_c0}' -a -I 1000
invalid or unsupported event: '{unc_p_clockticks,unc_p_power_state_occupancy.cores_c0}'
Run 'perf list' for a list of valid events
(as expected, interperted as event)
$ perf stat -e 'aaa.c' -a -I 1000
ERROR: problems with path aaa.c: No such file or directory
(as expected, interpreted as BPF source)
$ perf stat -e 'aaa.ccc' -a -I 1000
invalid or unsupported event: 'aaa.ccc'
(as expected, interpreted as event)
$ perf stat -e '{aaa.c}' -a -I 1000
ERROR: problems with path aaa.c: No such file or directory
event syntax error: '{aaa.c}'
<SKIP>
(as expected, interpreted as BPF source)
$ perf stat -e '{cycles,aaa.c}' -a -I 1000
ERROR: problems with path aaa.c: No such file or directory
event syntax error: '{cycles,aaa.c}'
(as expected, interpreted as BPF source)
Signed-off-by: Wang Nan <[email protected]>
Tested-by: Arnaldo Carvalho de Melo <[email protected]>
Reported-by: Andi Kleen <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Sukadev Bhattiprolu <[email protected]>
Cc: Zefan Li <[email protected]>
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
| -rw-r--r-- | tools/perf/util/parse-events.l | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l index 9f43fda2570f..660fca05bc93 100644 --- a/tools/perf/util/parse-events.l +++ b/tools/perf/util/parse-events.l @@ -136,8 +136,8 @@ do { \ group [^,{}/]*[{][^}]*[}][^,{}/]* event_pmu [^,{}/]+[/][^/]*[/][^,{}/]* event [^,{}/]+ -bpf_object .*\.(o|bpf) -bpf_source .*\.c +bpf_object [^,{}]+\.(o|bpf) +bpf_source [^,{}]+\.c num_dec [0-9]+ num_hex 0x[a-fA-F0-9]+ |