perf: Add PERF_SAMPLE_BRANCH_CALL

Add a new branch sample type to cover only call branches (function calls).
The current ANY_CALL included direct, indirect calls and far jumps.

We want to be able to differentiate indirect from direct calls. Therefore
we introduce PERF_SAMPLE_BRANCH_CALL. The implementation is up to each
architecture.

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]>

diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
index 6c72e72e975ce1db61ff449a72aca101ef86d792..651221334f4980c189c9b713d75f5f8f912c40f0 100644 (file)
--- a/include/uapi/linux/perf_event.h
+++ b/include/uapi/linux/perf_event.h
@@ -168,6 +168,7 @@ enum perf_branch_sample_type_shift {
 
        PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT     = 11, /* call/ret stack */
        PERF_SAMPLE_BRANCH_IND_JUMP_SHIFT       = 12, /* indirect jumps */
+       PERF_SAMPLE_BRANCH_CALL_SHIFT           = 13, /* direct call */
 
        PERF_SAMPLE_BRANCH_MAX_SHIFT            /* non-ABI */
 };
@@ -188,6 +189,7 @@ enum perf_branch_sample_type {
 
        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_CALL         = 1U << PERF_SAMPLE_BRANCH_CALL_SHIFT,
 
        PERF_SAMPLE_BRANCH_MAX          = 1U << PERF_SAMPLE_BRANCH_MAX_SHIFT,
 };