Messages in this thread Patch in this message | | | From | Stephane Eranian <> | Subject | [PATCH v1 1/3] perf: add new PERF_SAMPLE_BRANCH_IND_JUMP branch sample type | Date | Thu, 14 May 2015 23:09:58 +0200 |
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This patch adds a new branch_sample_type flag to enable filtering branch sampling to indirect jumps. The support is subject to hardware or kernel software support on each architecture.
Filtering on indirect jump is useful to study the targets of the jump.
Signed-off-by: Stephane Eranian <eranian@google.com> --- include/uapi/linux/perf_event.h | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h index 309211b..c4622f1 100644 --- a/include/uapi/linux/perf_event.h +++ b/include/uapi/linux/perf_event.h @@ -167,6 +167,7 @@ enum perf_branch_sample_type_shift { PERF_SAMPLE_BRANCH_COND_SHIFT = 10, /* conditional branches */ PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT = 11, /* call/ret stack */ + PERF_SAMPLE_BRANCH_IND_JUMP_SHIFT = 12, /* indirect jumps */ PERF_SAMPLE_BRANCH_MAX_SHIFT /* non-ABI */ }; @@ -186,6 +187,7 @@ enum perf_branch_sample_type { PERF_SAMPLE_BRANCH_COND = 1U << PERF_SAMPLE_BRANCH_COND_SHIFT, PERF_SAMPLE_BRANCH_CALL_STACK = 1U << PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT, + PERF_SAMPLE_BRANCH_IND_JUMP = 1U << PERF_SAMPLE_BRANCH_IND_JUMP_SHIFT, PERF_SAMPLE_BRANCH_MAX = 1U << PERF_SAMPLE_BRANCH_MAX_SHIFT, }; -- 1.9.1
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