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| author | Alexander Shishkin <alexander.shishkin@linux.intel.com> | 2019-08-06 17:41:01 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-08-14 16:59:59 +0300 |
| commit | ce7b0e426ef359ee1d4a6126314ee3547a8eed87 (patch) | |
| tree | 6d8433c74638b13e9a262e58c7c4e4456fa1058c /tools/perf/perf.h | |
| parent | 73e5de70dca00344cb48e018131a4cadec0fabf0 (diff) | |
| download | linux-ce7b0e426ef359ee1d4a6126314ee3547a8eed87.tar.xz | |
perf record: Add an option to take an AUX snapshot on exit
It is sometimes useful to generate a snapshot when perf record exits;
I've been using a wrapper script around the workload that would do a
killall -USR2 perf when the workload exits.
This patch makes it easier and also works when perf record is attached
to a pre-existing task. A new snapshot option 'e' can be specified in
-S to enable this behavior:
root@elsewhere:~# perf record -e intel_pt// -Se sleep 1
[ perf record: Woken up 2 times to write data ]
[ perf record: Captured and wrote 0.085 MB perf.data ]
Co-developed-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190806144101.62892-1-alexander.shishkin@linux.intel.com
[ Fixed up !HAVE_AUXTRACE_SUPPORT build in builtin-record.c, adding 2 missing __maybe_unused ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/perf.h')
| -rw-r--r-- | tools/perf/perf.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/perf.h b/tools/perf/perf.h index 74d0124d38f3..dc0a7a237887 100644 --- a/tools/perf/perf.h +++ b/tools/perf/perf.h @@ -57,6 +57,7 @@ struct record_opts { bool running_time; bool full_auxtrace; bool auxtrace_snapshot_mode; + bool auxtrace_snapshot_on_exit; bool record_namespaces; bool record_switch_events; bool all_kernel; |