diff options
| author | Stephane Eranian <[email protected]> | 2015-10-13 09:09:11 +0200 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2015-10-20 10:30:55 +0200 |
| commit | 43e41adc9e8c36545888d78fed2ef8d102a938dc (patch) | |
| tree | 0051dce83d96592204b55d24d5b2ff114d983857 | |
| parent | 24f1a79a5fc10858e05ee0bf651ec99abfc0319b (diff) | |
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 <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Vince Weaver <[email protected]>
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
| -rw-r--r-- | tools/perf/Documentation/perf-record.txt | 1 | ||||
| -rw-r--r-- | tools/perf/util/parse-branch-options.c | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index 2e9ce77b5e14..b027d28658f2 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -236,6 +236,7 @@ following filters are defined: - any_call: any function call or system call - any_ret: any function return or system call return - ind_call: any indirect branch + - call: direct calls, including far (to/from kernel) calls - u: only when the branch target is at the user level - k: only when the branch target is in the kernel - hv: only when the target is at the hypervisor level diff --git a/tools/perf/util/parse-branch-options.c b/tools/perf/util/parse-branch-options.c index a3b1e13a05c0..355eecf6bf59 100644 --- a/tools/perf/util/parse-branch-options.c +++ b/tools/perf/util/parse-branch-options.c @@ -27,6 +27,7 @@ static const struct branch_mode branch_modes[] = { BRANCH_OPT("no_tx", PERF_SAMPLE_BRANCH_NO_TX), BRANCH_OPT("cond", PERF_SAMPLE_BRANCH_COND), BRANCH_OPT("ind_jmp", PERF_SAMPLE_BRANCH_IND_JUMP), + BRANCH_OPT("call", PERF_SAMPLE_BRANCH_CALL), BRANCH_END }; |