From 1f2376cd03dd3b965d130ed46a7c92769d614ba1 Mon Sep 17 00:00:00 2001 From: Kan Liang Date: Wed, 25 Oct 2023 13:16:21 -0700 Subject: [PATCH] perf: Add branch_sample_call_stack 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 Signed-off-by: Peter Zijlstra (Intel) Link: https://lkml.kernel.org/r/20231025201626.3000228-3-kan.liang@linux.intel.com --- arch/x86/events/core.c | 2 +- include/linux/perf_event.h | 5 +++++ 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c index 40c9af124128d..09050641ce5d3 100644 --- a/arch/x86/events/core.c +++ b/arch/x86/events/core.c @@ -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; /* diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 7897ef0660272..ac1a59c1f2522 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -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, -- 2.30.2