diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-09-24 11:56:36 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-10-11 12:17:10 -0300 |
| commit | b52bc23414124b0d37fd9933b5a894d9b4a9720d (patch) | |
| tree | f40d13837db31708053f73039206645309f7d447 /tools/perf/perf.c | |
| parent | 75b757ca90469e990e6901f4a9497fe4161f7f5a (diff) | |
| download | linux-b52bc23414124b0d37fd9933b5a894d9b4a9720d.tar.bz2 | |
perf trace: Add 'trace' alias to 'perf trace'
Make 'perf trace' more accessible by aliasing it to just 'trace':
[root@zoo linux]# trace --duration 15 -a -e futex sleep 1
110.092 (16.188 ms): libvirtd/1166 futex(uaddr: 0x185b344, op: WAIT|PRIV, val: 174293 ) = 0
110.101 (15.903 ms): libvirtd/1171 futex(uaddr: 0x185b3dc, op: WAIT|PRIV, val: 139265 ) = 0
111.594 (15.776 ms): libvirtd/1165 futex(uaddr: 0x185b344, op: WAIT|PRIV, val: 174295 ) = 0
111.610 (15.969 ms): libvirtd/1169 futex(uaddr: 0x185b3dc, op: WAIT|PRIV, val: 139267 ) = 0
113.556 (16.216 ms): libvirtd/1168 futex(uaddr: 0x185b3dc, op: WAIT|PRIV, val: 139269 ) = 0
291.265 (199.508 ms): chromium-brows/15830 futex(uaddr: 0x7fff2986bcb4, op: WAIT_BITSET|PRIV|CLKRT, val: 1, utime: 0x7fff2986bab0, val3: 4294967295) = -1 ETIMEDOUT Connection timed out
360.354 (69.053 ms): chromium-brows/15830 futex(uaddr: 0x7fff2986bcb4, op: WAIT_BITSET|PRIV|CLKRT, val: 1, utime: 0x7fff2986bab0, val3: 4294967295) = -1 ETIMEDOUT Connection timed out
[root@zoo linux]#
I.e. looking for futex calls that take at least 15ms, system wide, during a one
second window. Now to get callchains into 'trace' to figure out what are those
locks :-)
Requested-by: Ingo Molnar <mingo@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-ch4smqz8b5fmgrte7c5e4fuw@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/perf.c')
| -rw-r--r-- | tools/perf/perf.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/tools/perf/perf.c b/tools/perf/perf.c index 626577830264..8b38b4e80ec2 100644 --- a/tools/perf/perf.c +++ b/tools/perf/perf.c @@ -481,7 +481,14 @@ int main(int argc, const char **argv) fprintf(stderr, "cannot handle %s internally", cmd); goto out; } - +#ifdef HAVE_LIBAUDIT_SUPPORT + if (!prefixcmp(cmd, "trace")) { + set_buildid_dir(); + setup_path(); + argv[0] = "trace"; + return cmd_trace(argc, argv, NULL); + } +#endif /* Look for flags.. */ argv++; argc--; |