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perf thread-stack: Add thread_stack__br_sample_late()

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Add a thread stack function to create a branch stack for hardware events
where the sample records get created some time after the event occurred.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lore.kernel.org/lkml/20200429150751.12570-7-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter
2020-04-29 18:07:48 +03:00
committed by Arnaldo Carvalho de Melo
parent 6cd2cbfc68
commit 3749e0bbde
2 changed files with 107 additions and 0 deletions
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tools/perf/util/thread-stack.h
+3
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@@ -91,6 +91,9 @@ void thread_stack__sample_late(struct thread *thread, int cpu,
u64 kernel_start);
void thread_stack__br_sample(struct thread *thread, int cpu,
struct branch_stack *dst, unsigned int sz);
void thread_stack__br_sample_late(struct thread *thread, int cpu,
struct branch_stack *dst, unsigned int sz,
u64 sample_ip, u64 kernel_start);
int thread_stack__flush(struct thread *thread);
void thread_stack__free(struct thread *thread);
size_t thread_stack__depth(struct thread *thread, int cpu);