perf record: Add ability to sample call branches
authorStephane Eranian <eranian@google.com>
Tue, 13 Oct 2015 07:09:11 +0000 (09:09 +0200)
committerIngo Molnar <mingo@kernel.org>
Tue, 20 Oct 2015 08:30:55 +0000 (10:30 +0200)
commit43e41adc9e8c36545888d78fed2ef8d102a938dc
tree0051dce83d96592204b55d24d5b2ff114d983857
parent24f1a79a5fc10858e05ee0bf651ec99abfc0319b
perf record: Add ability to sample call branches

This patch add a new branch type sampling filter to perf record.
It is named 'call' and maps to PERF_SAMPLE_BRANCH_CALL. It samples
direct call branches only, unlike 'any_call' which includes indirect
calls as well.

 $ perf record -j call -e cycles .....

The man page is updated accordingly.

Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: khandual@linux.vnet.ibm.com
Link: http://lkml.kernel.org/r/1444720151-10275-5-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
tools/perf/Documentation/perf-record.txt
tools/perf/util/parse-branch-options.c