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| author | Peter Zijlstra <peterz@infradead.org> | 2024-08-07 13:29:26 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2024-08-08 12:27:31 +0200 |
| commit | 9a32bd9901fe5b1dcf544389dbf04f3b0a2fbab4 (patch) | |
| tree | 215ee21ba47fe8bf55f5d231eae4bc51a4ace77f /kernel/events | |
| parent | perf: Optimize context reschedule for single PMU cases (diff) | |
| download | linux-9a32bd9901fe5b1dcf544389dbf04f3b0a2fbab4.tar.xz linux-9a32bd9901fe5b1dcf544389dbf04f3b0a2fbab4.zip | |
perf: Extract a few helpers
The context time update code is repeated verbatim a few times.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20240807115550.031212518@infradead.org
Diffstat (limited to 'kernel/events')
| -rw-r--r-- | kernel/events/core.c | 39 |
1 files changed, 22 insertions, 17 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index dad2b9ac42c0..eb03c9ab1670 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -2330,6 +2330,24 @@ group_sched_out(struct perf_event *group_event, struct perf_event_context *ctx) event_sched_out(event, ctx); } +static inline void +ctx_time_update(struct perf_cpu_context *cpuctx, struct perf_event_context *ctx) +{ + if (ctx->is_active & EVENT_TIME) { + update_context_time(ctx); + update_cgrp_time_from_cpuctx(cpuctx, false); + } +} + +static inline void +ctx_time_update_event(struct perf_event_context *ctx, struct perf_event *event) +{ + if (ctx->is_active & EVENT_TIME) { + update_context_time(ctx); + update_cgrp_time_from_event(event); + } +} + #define DETACH_GROUP 0x01UL #define DETACH_CHILD 0x02UL #define DETACH_DEAD 0x04UL @@ -2349,10 +2367,7 @@ __perf_remove_from_context(struct perf_event *event, struct perf_event_pmu_context *pmu_ctx = event->pmu_ctx; unsigned long flags = (unsigned long)info; - if (ctx->is_active & EVENT_TIME) { - update_context_time(ctx); - update_cgrp_time_from_cpuctx(cpuctx, false); - } + ctx_time_update(cpuctx, ctx); /* * Ensure event_sched_out() switches to OFF, at the very least @@ -2437,12 +2452,8 @@ static void __perf_event_disable(struct perf_event *event, if (event->state < PERF_EVENT_STATE_INACTIVE) return; - if (ctx->is_active & EVENT_TIME) { - update_context_time(ctx); - update_cgrp_time_from_event(event); - } - perf_pmu_disable(event->pmu_ctx->pmu); + ctx_time_update_event(ctx, event); if (event == event->group_leader) group_sched_out(event, ctx); @@ -4529,10 +4540,7 @@ static void __perf_event_read(void *info) return; raw_spin_lock(&ctx->lock); - if (ctx->is_active & EVENT_TIME) { - update_context_time(ctx); - update_cgrp_time_from_event(event); - } + ctx_time_update_event(ctx, event); perf_event_update_time(event); if (data->group) @@ -4732,10 +4740,7 @@ again: * May read while context is not active (e.g., thread is * blocked), in that case we cannot update context time */ - if (ctx->is_active & EVENT_TIME) { - update_context_time(ctx); - update_cgrp_time_from_event(event); - } + ctx_time_update_event(ctx, event); perf_event_update_time(event); if (group) |