linux-stable/kernel/sched
Gautham R. Shenoy 02dbb7246c sched/fair: Fix clearing of has_idle_cores flag in select_idle_cpu()
In commit:

  9fe1f127b9 ("sched/fair: Merge select_idle_core/cpu()")

in select_idle_cpu(), we check if an idle core is present in the LLC
of the target CPU via the flag "has_idle_cores". We look for the idle
core in select_idle_cores(). If select_idle_cores() isn't able to find
an idle core/CPU, we need to unset the has_idle_cores flag in the LLC
of the target to prevent other CPUs from going down this route.

However, the current code is unsetting it in the LLC of the current
CPU instead of the target CPU. This patch fixes this issue.

Fixes: 9fe1f127b9 ("sched/fair: Merge select_idle_core/cpu()")
Signed-off-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Link: https://lore.kernel.org/r/1620746169-13996-1-git-send-email-ego@linux.vnet.ibm.com
2021-05-12 10:41:28 +02:00
..
autogroup.c sched/autogroup: Make autogroup_path() always available 2019-06-24 19:23:40 +02:00
autogroup.h
clock.c sched: Fix various typos 2021-03-22 00:11:52 +01:00
completion.c completion: Use lockdep_assert_RT_in_threaded_ctx() in complete_all() 2020-03-23 18:40:25 +01:00
core.c sched: Fix out-of-bound access in uclamp 2021-05-06 15:33:26 +02:00
cpuacct.c sched: Fix various typos 2021-03-22 00:11:52 +01:00
cpudeadline.c sched,rt: Use the full cpumask for balancing 2020-11-10 18:39:00 +01:00
cpudeadline.h
cpufreq.c cpufreq: Avoid leaving stale IRQ work items during CPU offline 2019-12-12 17:59:43 +01:00
cpufreq_schedutil.c Scheduler updates for this cycle are: 2021-04-28 13:33:57 -07:00
cpupri.c sched: Fix various typos 2021-03-22 00:11:52 +01:00
cpupri.h sched/cpupri: Add CPUPRI_HIGHER 2020-10-29 11:00:30 +01:00
cputime.c Scheduler updates for this cycle are: 2021-04-28 13:33:57 -07:00
deadline.c sched: Fix various typos 2021-03-22 00:11:52 +01:00
debug.c sched/debug: Fix cgroup_path[] serialization 2021-04-21 13:55:42 +02:00
fair.c sched/fair: Fix clearing of has_idle_cores flag in select_idle_cpu() 2021-05-12 10:41:28 +02:00
features.h sched: Warn on long periods of pending need_resched 2021-04-21 13:55:41 +02:00
idle.c sched: Fix various typos 2021-03-22 00:11:52 +01:00
isolation.c isolcpus: Affine unbound kernel threads to housekeeping cpus 2020-06-15 14:10:03 +02:00
loadavg.c sched: Fix various typos 2021-03-22 00:11:52 +01:00
Makefile kcsan: Improve various small stylistic details 2019-11-20 10:47:23 +01:00
membarrier.c sched/membarrier: fix missing local execution of ipi_sync_rq_state() 2021-03-06 12:40:21 +01:00
pelt.c sched: Fix various typos 2021-03-22 00:11:52 +01:00
pelt.h sched: Fix various typos 2021-03-22 00:11:52 +01:00
psi.c psi: Fix psi state corruption when schedule() races with cgroup move 2021-05-06 15:33:26 +02:00
rt.c sched: Fix various typos 2021-03-22 00:11:52 +01:00
sched-pelt.h sched/fair: Fix "runnable_avg_yN_inv" not used warnings 2019-06-17 12:15:58 +02:00
sched.h sched: Warn on long periods of pending need_resched 2021-04-21 13:55:41 +02:00
smp.h sched/headers: Split out open-coded prototypes into kernel/sched/smp.h 2020-05-28 11:03:20 +02:00
stats.c sched: Fix various typos 2021-03-22 00:11:52 +01:00
stats.h psi: Optimize task switch inside shared cgroups 2021-03-06 12:40:23 +01:00
stop_task.c sched: Remove select_task_rq()'s sd_flag parameter 2020-11-10 18:39:06 +01:00
swait.c sched/swait: Prepare usage in completions 2020-03-21 16:00:23 +01:00
topology.c sched/debug: Rename the sched_debug parameter to sched_verbose 2021-04-17 13:22:44 +02:00
wait.c sched/wait: Add add_wait_queue_priority() 2020-11-15 09:49:09 -05:00
wait_bit.c sched/wait: fix ___wait_var_event(exclusive) 2019-12-17 13:32:50 +01:00