Peter Zijlstra cd9626e9eb sched/fair: Fix external p->on_rq users ... Sean noted that ever since commit 152e11f6df ("sched/fair: Implement delayed dequeue") KVM's preemption notifiers have started mis-classifying preemption vs blocking. Notably p->on_rq is no longer sufficient to determine if a task is runnable or blocked -- the aforementioned commit introduces tasks that remain on the runqueue even through they will not run again, and should be considered blocked for many cases. Add the task_is_runnable() helper to classify things and audit all external users of the p->on_rq state. Also add a few comments. Fixes: 152e11f6df ("sched/fair: Implement delayed dequeue") Reported-by: Sean Christopherson <seanjc@google.com> Tested-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lkml.kernel.org/r/20241010091843.GK33184@noisy.programming.kicks-ass.net		2024-10-14 09:14:35 +02:00
..
callchain.c	sysctl: treewide: constify the ctl_table argument of proc_handlers	2024-07-24 20:59:29 +02:00
core.c	sched/fair: Fix external p->on_rq users	2024-10-14 09:14:35 +02:00
hw_breakpoint_test.c	perf/hw_breakpoint: remove MODULE_LICENSE in non-modules	2023-04-13 13:13:52 -07:00
hw_breakpoint.c	perf/hw_breakpoint: Remove arch breakpoint hooks	2023-08-16 23:54:50 +10:00
internal.h	perf/aux: Fix AUX buffer serialization	2024-09-04 18:22:56 +02:00
Makefile	perf/hw_breakpoint: Add KUnit test for constraints accounting	2022-08-30 10:56:20 +02:00
ring_buffer.c	perf/aux: Fix AUX buffer serialization	2024-09-04 18:22:56 +02:00
uprobes.c	uprobes: fix kernel info leak via "[uprobes]" vma	2024-09-30 08:19:11 +09:00