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perf: Add branch_sample_call_stack

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Add a helper function to check call stack sample type.

The later patch will invoke the function in several places.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20231025201626.3000228-3-kan.liang@linux.intel.com
This commit is contained in:
Kan Liang 2023-10-25 13:16:21 -07:00 committed by Peter Zijlstra
parent 85846b2707
commit 1f2376cd03
2 changed files with 6 additions and 1 deletions
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2
arch/x86/events/core.c
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@ -601,7 +601,7 @@ int x86_pmu_hw_config(struct perf_event *event)
}
}
if (event->attr.branch_sample_type & PERF_SAMPLE_BRANCH_CALL_STACK)
if (branch_sample_call_stack(event))
event->attach_state |= PERF_ATTACH_TASK_DATA;
/*

5
include/linux/perf_event.h
View File

@ -1144,6 +1144,11 @@ static inline bool branch_sample_counters(const struct perf_event *event)
return event->attr.branch_sample_type & PERF_SAMPLE_BRANCH_COUNTERS;
}
static inline bool branch_sample_call_stack(const struct perf_event *event)
{
return event->attr.branch_sample_type & PERF_SAMPLE_BRANCH_CALL_STACK;
}
struct perf_sample_data {
/*
* Fields set by perf_sample_data_init() unconditionally,