Vincent Guittot 457be908c8 sched/fair: Fix the update of blocked load when newly idle ...

With commit:

  31e77c93e4 ("sched/fair: Update blocked load when newly idle")

... we release the rq->lock when updating blocked load of idle CPUs.

This opens a time window during which another CPU can add a task to this
CPU's cfs_rq.

The check for newly added task of idle_balance() is not in the common path.
Move the out label to include this check.

Reported-by: Heiner Kallweit <hkallweit1@gmail.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
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: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 31e77c93e4 ("sched/fair: Update blocked load when newly idle")
Link: http://lkml.kernel.org/r/20180426103133.GA6953@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2018-05-03 07:38:03 +02:00

..

bpf

bpf: sockmap remove dead check

2018-04-20 22:09:51 +02:00

cgroup

Merge branch 'for-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

2018-04-03 18:00:13 -07:00

configs

Merge tag 'kvm-4.16-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2018-02-10 13:16:35 -08:00

debug

Merge tag 'for_linus-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb

2018-04-12 10:21:19 -07:00

events

Merge tag 'trace-v4.17-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2018-05-02 17:38:37 -10:00

gcov

…

irq

genirq/affinity: Spread irq vectors among present CPUs as far as possible

2018-04-06 12:19:51 +02:00

livepatch

livepatch: Allow to call a custom callback when freeing shadow variables

2018-04-17 13:42:48 +02:00

locking

locking/rwsem: Add DEBUG_RWSEMS to look for lock/unlock mismatches

2018-03-31 07:30:50 +02:00

power

PM / QoS: mark expected switch fall-throughs

2018-04-09 13:49:40 +02:00

printk

Merge tag 'trace-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2018-04-10 11:27:30 -07:00

rcu

Merge branches 'fixes.2018.02.23a', 'srcu.2018.02.20a' and 'torture.2018.02.20a' into HEAD

2018-02-23 15:15:41 -08:00

sched

sched/fair: Fix the update of blocked load when newly idle

2018-05-03 07:38:03 +02:00

time

Revert: Unify CLOCK_MONOTONIC and CLOCK_BOOTTIME

2018-04-26 14:53:32 +02:00

trace

Merge tag 'trace-v4.17-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2018-05-02 17:38:37 -10:00

.gitignore

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acct.c

kernel/acct.c: fix the acct->needcheck check in check_free_space()

2018-01-04 16:45:09 -08:00

async.c

kernel/async.c: revert "async: simplify lowest_in_progress()"

2018-02-06 18:32:44 -08:00

audit_fsnotify.c

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audit_tree.c

audit: track the owner of the command mutex ourselves

2018-02-23 11:22:22 -05:00

audit_watch.c

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audit.c

Merge tag 'audit-pr-20180403' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit

2018-04-06 15:01:25 -07:00

audit.h

audit: track the owner of the command mutex ourselves

2018-02-23 11:22:22 -05:00

auditfilter.c

audit: deprecate the AUDIT_FILTER_ENTRY filter

2018-02-15 14:36:29 -05:00

auditsc.c

audit: bail before bug check if audit disabled

2018-02-15 14:40:25 -05:00

backtracetest.c

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bounds.c

…

capability.c

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compat.c

mm: add kernel_move_pages() helper, move compat syscall to mm/migrate.c

2018-04-02 20:15:32 +02:00

configs.c

…

context_tracking.c

…

cpu_pm.c

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cpu.c

cpu/hotplug: Fix unused function warning

2018-03-15 20:34:40 +01:00

crash_core.c

kexec: export PG_swapbacked to VMCOREINFO

2018-04-13 17:10:27 -07:00

crash_dump.c

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cred.c

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delayacct.c

delayacct: Account blkio completion on the correct task

2018-01-16 03:29:36 +01:00

dma.c

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elfcore.c

…

exec_domain.c

get rid of pointless includes of fs_struct.h

2018-02-22 14:28:50 -05:00

exit.c

kernel: use kernel_wait4() instead of sys_wait4()

2018-04-02 20:14:51 +02:00

extable.c

extable: Make init_kernel_text() global

2018-02-21 16:54:06 +01:00

fail_function.c

error-injection: Fix to prohibit jump optimization

2018-03-12 16:16:00 +01:00

fork.c

fork: unconditionally clear stack on fork

2018-04-20 17:18:35 -07:00

freezer.c

…

futex_compat.c

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futex.c

pids: introduce find_get_task_by_vpid() helper

2018-02-06 18:32:46 -08:00

groups.c

kernel: make groups_sort calling a responsibility group_info allocators

2017-12-14 16:00:49 -08:00

hung_task.c

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irq_work.c

irq/work: Improve the flag definitions

2018-01-08 19:43:15 +01:00

jump_label.c

jump_label: Disable jump labels in __exit code

2018-03-20 08:57:17 +01:00

kallsyms.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk

2018-02-01 13:36:15 -08:00

kcmp.c

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Kconfig.freezer

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Kconfig.hz

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Kconfig.locks

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Kconfig.preempt

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kcov.c

kcov: detect double association with a single task

2018-02-06 18:32:46 -08:00

kexec_core.c

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kexec_file.c

kernel/kexec_file.c: allow archs to set purgatory load address

2018-04-13 17:10:28 -07:00

kexec_internal.h

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kexec.c

kexec: call do_kexec_load() in compat syscall directly

2018-04-02 20:15:01 +02:00

kmod.c

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kprobes.c

kprobes: Fix random address output of blacklist file

2018-04-25 10:27:56 -04:00

ksysfs.c

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kthread.c

treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts

2017-11-21 16:35:54 -08:00

latencytop.c

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Makefile

error-injection: Support fault injection framework

2018-01-12 17:33:38 -08:00

memremap.c

kernel/memremap: Remove stale devres_free() call

2018-03-06 10:58:54 -08:00

module_signing.c

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module-internal.h

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module.c

module: Fix display of wrong module .text address

2018-04-18 22:59:46 +02:00

notifier.c

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nsproxy.c

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padata.c

padata: add SPDX identifier

2018-01-05 18:43:00 +11:00

panic.c

taint: add taint for randstruct

2018-04-11 10:28:35 -07:00

params.c

kernel/params.c: downgrade warning for unsafe parameters

2018-04-11 10:28:37 -07:00

pid_namespace.c

Merge branch 'userns-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

2018-04-03 19:15:32 -07:00

pid.c

xarray: add the xa_lock to the radix_tree_root

2018-04-11 10:28:39 -07:00

profile.c

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ptrace.c

pids: introduce find_get_task_by_vpid() helper

2018-02-06 18:32:46 -08:00

range.c

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reboot.c

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relay.c

kernel/relay.c: limit kmalloc size to KMALLOC_MAX_SIZE

2018-02-21 15:35:43 -08:00

resource.c

resource: fix integer overflow at reallocation

2018-04-13 17:10:27 -07:00

seccomp.c

Merge tag 'seccomp-v4.16-rc3' of https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux into fixes-v4.16-rc3

2018-02-22 10:50:24 -08:00

signal.c

Merge branch 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security

2018-04-07 11:11:41 -07:00

smp.c

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smpboot.c

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smpboot.h

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softirq.c

softirq: Consolidate common code in tasklet_[hi]_action()

2018-03-09 11:50:55 +01:00

stacktrace.c

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stop_machine.c

stop_machine, sched: Fix migrate_swap() vs. active_balance() deadlock

2018-05-03 07:38:03 +02:00

sys_ni.c

syscalls/core: Prepare CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y for compat syscalls

2018-04-05 16:59:38 +02:00

sys.c

kernel: add ksys_setsid() helper; remove in-kernel call to sys_setsid()

2018-04-02 20:16:06 +02:00

sysctl_binary.c

staging: irda: remove remaining remants of irda code removal

2018-04-16 11:26:49 +02:00

sysctl.c

kernel/sysctl.c: add kdoc comments to do_proc_do{u}intvec_minmax_conv_param

2018-04-11 10:28:38 -07:00

task_work.c

locking/barriers: Convert users of lockless_dereference() to READ_ONCE()

2017-12-17 13:57:15 +01:00

taskstats.c

pids: introduce find_get_task_by_vpid() helper

2018-02-06 18:32:46 -08:00

test_kprobes.c

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torture.c

torture: Save a line in stutter_wait(): while -> for

2017-12-11 09:18:30 -08:00

tracepoint.c

tracepoint: Do not warn on ENOMEM

2018-04-30 12:09:56 -04:00

tsacct.c

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ucount.c

headers: untangle kmemleak.h from mm.h

2018-04-05 21:36:27 -07:00

uid16.c

fs: add do_fchownat(), ksys_fchown() helpers and ksys_{,l}chown() wrappers

2018-04-02 20:15:59 +02:00

uid16.h

kernel: provide ksys_*() wrappers for syscalls called by kernel/uid16.c

2018-04-02 20:15:30 +02:00

umh.c

kernel: use kernel_wait4() instead of sys_wait4()

2018-04-02 20:14:51 +02:00

up.c

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user_namespace.c

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user-return-notifier.c

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user.c

efivarfs: Limit the rate for non-root to read files

2018-02-22 10:21:02 -08:00

utsname_sysctl.c

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utsname.c

uts: create "struct uts_namespace" from kmem_cache

2018-04-11 10:28:35 -07:00

watchdog_hld.c

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watchdog.c

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workqueue_internal.h

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workqueue.c

Merge branch 'for-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

2018-04-03 18:00:13 -07:00