Sebastian Andrzej Siewior e681dcbaa4 sched: Fix get_push_task() vs migrate_disable() ... push_rt_task() attempts to move the currently running task away if the next runnable task has migration disabled and therefore is pinned on the current CPU. The current task is retrieved via get_push_task() which only checks for nr_cpus_allowed == 1, but does not check whether the task has migration disabled and therefore cannot be moved either. The consequence is a pointless invocation of the migration thread which correctly observes that the task cannot be moved. Return NULL if the task has migration disabled and cannot be moved to another CPU. Fixes: a7c81556ec ("sched: Fix migrate_disable() vs rt/dl balancing") Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20210826133738.yiotqbtdaxzjsnfj@linutronix.de		2021-08-26 19:02:00 +02:00
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autogroup.c
autogroup.h
clock.c
completion.c
core.c	sched: Fix Core-wide rq->lock for uninitialized CPUs	2021-08-20 12:32:53 +02:00
core_sched.c
cpuacct.c
cpudeadline.c
cpudeadline.h
cpufreq.c
cpufreq_schedutil.c	sched/cpufreq: Consider reduced CPU capacity in energy calculation	2021-06-17 14:11:43 +02:00
cpupri.c
cpupri.h
cputime.c
deadline.c	sched/rt: Fix Deadline utilization tracking during policy change	2021-06-22 16:41:59 +02:00
debug.c	Merge branch 'sched/urgent' into sched/core, to resolve conflicts	2021-06-18 11:31:25 +02:00
fair.c	Three fixes:	2021-07-11 11:13:57 -07:00
features.h
idle.c
isolation.c
loadavg.c
Makefile
membarrier.c
pelt.c
pelt.h	Merge branch 'sched/urgent' into sched/core, to resolve conflicts	2021-06-18 11:31:25 +02:00
psi.c	Merge branch 'for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2021-07-01 17:22:14 -07:00
rt.c	sched/rt: Fix RT utilization tracking during policy change	2021-06-22 16:41:59 +02:00
sched-pelt.h
sched.h	sched: Fix get_push_task() vs migrate_disable()	2021-08-26 19:02:00 +02:00
smp.h
stats.c
stats.h	sched: Introduce task_is_running()	2021-06-18 11:43:07 +02:00
stop_task.c
swait.c
topology.c	sched/topology: Rework CPU capacity asymmetry detection	2021-06-24 09:07:51 +02:00
wait.c
wait_bit.c