Vincent Guittot d71744b5c1 sched/fair: Fix O(nr_cgroups) in the load balancing path ...

commit 039ae8bcf7 upstream.

This re-applies the commit reverted here:

  commit c40f7d74c7 ("sched/fair: Fix infinite loop in update_blocked_averages() by reverting a9e7f6544b9c")

I.e. now that cfs_rq can be safely removed/added in the list, we can re-apply:

 commit a9e7f6544b ("sched/fair: Fix O(nr_cgroups) in load balance path")

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: sargun@sargun.me
Cc: tj@kernel.org
Cc: xiexiuqi@huawei.com
Cc: xiezhipeng1@huawei.com
Link: https://lkml.kernel.org/r/1549469662-13614-3-git-send-email-vincent.guittot@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Vishnu Rangayyan <vishnu.rangayyan@apple.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2020-03-05 16:42:21 +01:00

..

autogroup.c

sched/autogroup: Fix possible Spectre-v1 indexing for sched_prio_to_weight[]

2018-05-05 08:34:42 +02:00

autogroup.h

…

clock.c

sched/clock: Disable interrupts when calling generic_sched_clock_init()

2018-07-30 19:33:35 +02:00

completion.c

sched/Documentation: Update wake_up() & co. memory-barrier guarantees

2018-07-17 09:30:34 +02:00

core.c

sched/core: Avoid spurious lock dependencies

2019-12-13 08:51:04 +01:00

cpuacct.c

…

cpudeadline.c

…

cpudeadline.h

…

cpufreq_schedutil.c

cpufreq: Avoid leaving stale IRQ work items during CPU offline

2019-12-31 16:36:22 +01:00

cpufreq.c

cpufreq: Avoid leaving stale IRQ work items during CPU offline

2019-12-31 16:36:22 +01:00

cpupri.c

…

cpupri.h

…

cputime.c

sched/vtime: Fix guest/system mis-accounting on task switch

2019-11-06 13:06:01 +01:00

deadline.c

sched/deadline: Fix bandwidth accounting at all levels after offline migration

2019-10-05 13:09:36 +02:00

debug.c

jump_label: move 'asm goto' support test to Kconfig

2019-06-04 08:02:34 +02:00

fair.c

sched/fair: Fix O(nr_cgroups) in the load balancing path

2020-03-05 16:42:21 +01:00

features.h

…

idle.c

idle: Prevent late-arriving interrupts from disrupting offline

2019-10-05 13:09:40 +02:00

isolation.c

…

loadavg.c

…

Makefile

sched/pelt: Move PELT related code in a dedicated file

2018-07-15 23:51:20 +02:00

membarrier.c

sched/membarrier: Fix private expedited registration check

2019-10-11 18:21:22 +02:00

pelt.c

sched/pelt: Fix warning and clean up IRQ PELT config

2018-12-19 19:19:49 +01:00

pelt.h

sched/pelt: Fix warning and clean up IRQ PELT config

2018-12-19 19:19:49 +01:00

rt.c

sched/rt: Check integer overflow at usec to nsec conversion

2019-05-31 06:46:19 -07:00

sched-pelt.h

sched/fair: Fix "runnable_avg_yN_inv" not used warnings

2019-07-26 09:14:08 +02:00

sched.h

sched/debug: Explicitly cast sched_feat() to bool

2019-11-20 18:46:13 +01:00

stats.c

proc: introduce proc_create_seq{,_data}

2018-05-16 07:23:35 +02:00

stats.h

…

stop_task.c

…

swait.c

sched/swait: Rename to exclusive

2018-06-20 11:35:56 +02:00

topology.c

sched/topology: Fix off by one bug

2019-12-01 09:17:16 +01:00

wait_bit.c

…

wait.c

sched/wait: assert the wait_queue_head lock is held in __wake_up_common

2018-08-22 10:52:47 -07:00