Commit-ID: 43e41adc9e8c36545888d78fed2ef8d102a938dc Gitweb: http://git.kernel.org/tip/43e41adc9e8c36545888d78fed2ef8d102a938dc Author: Stephane Eranian <[email protected]> AuthorDate: Tue, 13 Oct 2015 09:09:11 +0200 Committer: Ingo Molnar <[email protected]> CommitDate: Tue, 20 Oct 2015 10:30:55 +0200
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]> --- tools/perf/Documentation/perf-record.txt | 1 + tools/perf/util/parse-branch-options.c | 1 + 2 files changed, 2 insertions(+) diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index 2e9ce77..b027d28 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 a3b1e13..355eecf 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 }; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
