Re: [PATCH 3/6] sched,perf,kvm: Fix preemption condition
From: Peter Zijlstra <peterz@infradead.org>
Date: 2021-06-02 14:24:02
Also in:
dm-devel, kvm, linux-block, linux-fsdevel, linux-mm, linux-perf-users, linux-pm, linux-usb, lkml, netdev, rcu
On Wed, Jun 02, 2021 at 10:15:16AM -0400, Mathieu Desnoyers wrote:
----- On Jun 2, 2021, at 9:12 AM, Peter Zijlstra peterz@infradead.org wrote: [...]quoted
--- a/kernel/events/core.c +++ b/kernel/events/core.c@@ -8568,13 +8568,12 @@ static void perf_event_switch(struct tas}, }; - if (!sched_in && task->state == TASK_RUNNING) + if (!sched_in && current->on_rq) { switch_event.event_id.header.misc |= PERF_RECORD_MISC_SWITCH_OUT_PREEMPT; + } - perf_iterate_sb(perf_event_switch_output, - &switch_event, - NULL); + perf_iterate_sb(perf_event_switch_output, &switch_event, NULL); }There is a lot of code cleanup going on here which does not seem to belong to a "Fix" patch.
Maybe, but I so hate whitespace only patches :-/