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authorAlexander Shishkin <alexander.shishkin@linux.intel.com>2019-08-06 17:41:01 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2019-08-14 16:59:59 +0300
commitce7b0e426ef359ee1d4a6126314ee3547a8eed87 (patch)
tree6d8433c74638b13e9a262e58c7c4e4456fa1058c /tools/perf/perf.h
parent73e5de70dca00344cb48e018131a4cadec0fabf0 (diff)
downloadlinux-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.h1
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;