From: Peter Zijlstra <peterz@infradead.org>
Date: Wed, 16 Apr 2025 09:36:24 +0000 (+0200)
Subject: perf/core: Fix event timekeeping merge
X-Git-Tag: v6.16-rc1~196^2~42
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b02b41c827de9f4b785f57e82d76d0826cc8398b;p=thirdparty%2Flinux.git

perf/core: Fix event timekeeping merge

Due to an oversight in merging:

  da916e96e2de ("perf: Make perf_pmu_unregister() useable")

on top of:

  a3c3c66670ce ("perf/core: Fix child_total_time_enabled accounting bug at task exit")

the timekeeping fix from this latter patch got undone.

Redo it.

Fixes: da916e96e2de ("perf: Make perf_pmu_unregister() useable")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lkml.kernel.org/r/20250417080815.GI38216@noisy.programming.kicks-ass.net
---

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 43d87de3d4f24..07414cb1279bd 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -2500,14 +2500,14 @@ __perf_remove_from_context(struct perf_event *event,
 		state = PERF_EVENT_STATE_DEAD;
 	}
 	event_sched_out(event, ctx);
+	perf_event_set_state(event, min(event->state, state));
+
 	if (flags & DETACH_GROUP)
 		perf_group_detach(event);
 	if (flags & DETACH_CHILD)
 		perf_child_detach(event);
 	list_del_event(event, ctx);
 
-	event->state = min(event->state, state);
-
 	if (!pmu_ctx->nr_events) {
 		pmu_ctx->rotate_necessary = 0;