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Vincent Guittot 0826530de3 sched/fair: Remove update of blocked load from newidle_balance 
newidle_balance runs with both preempt and irq disabled which prevent
local irq to run during this period. The duration for updating the
blocked load of CPUs varies according to the number of CPU cgroups
with non-decayed load and extends this critical period to an uncontrolled
level.

Remove the update from newidle_balance and trigger a normal ILB that
will take care of the update instead.

This reduces the IRQ latency from O(nr_cgroups * nr_nohz_cpus) to
O(nr_cgroups).

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Valentin Schneider <valentin.schneider@arm.com>
Link: https://lkml.kernel.org/r/20210224133007.28644-2-vincent.guittot@linaro.org
2021-03-06 12:40:21 +01:00
..
bpf
idmapped-mounts-v5.12
2021-02-23 13:39:45 -08:00
cgroup
idmapped-mounts-v5.12
2021-02-23 13:39:45 -08:00
configs
staging: ION: remove some references to CONFIG_ION
2021-01-06 17:39:38 +01:00
debug
kgdb: fix to kill breakpoints on initmem after boot
2021-02-26 09:41:05 -08:00
dma
Merge branch 'stable/for-linus-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb
2021-02-26 13:59:32 -08:00
entry
entry: Explicitly flush pending rcuog wakeup before last rescheduling point
2021-02-17 14:12:43 +01:00
events
kernel: delete repeated words in comments
2021-02-26 09:41:03 -08:00
gcov
init/gcov: allow CONFIG_CONSTRUCTORS on UML to fix module gcov
2021-02-05 11:03:47 -08:00
irq
Driver core / debugfs update for 5.12-rc1
2021-02-24 10:13:55 -08:00
kcsan
kcsan: Rewrite kcsan_prandom_u32_max() without prandom_u32_state()
2021-01-04 14:39:07 -08:00
livepatch
kallsyms: refactor {,module_}kallsyms_on_each_symbol
2021-02-08 12:22:08 +01:00
locking
kernel: delete repeated words in comments
2021-02-26 09:41:03 -08:00
power
Merge branches 'powercap' and 'pm-misc'
2021-02-15 18:50:01 +01:00
printk
Merge branch 'printk-rework' into for-linus
2021-02-22 13:43:55 +01:00
rcu
Scheduler updates for v5.12:
2021-02-21 12:35:04 -08:00
sched
sched/fair: Remove update of blocked load from newidle_balance
2021-03-06 12:40:21 +01:00
time
These are the latest RCU updates for v5.12:
2021-02-21 12:04:41 -08:00
trace
tracing: Skip selftests if tracing is disabled
2021-03-04 09:51:25 -05:00
.gitignore
…
acct.c
kernel/acct.c: use #elif instead of #end and #elif
2020-12-15 22:46:15 -08:00
async.c
treewide: Remove uninitialized_var() usage
2020-07-16 12:35:15 -07:00
audit_fsnotify.c
audit_alloc_mark(): don't open-code ERR_CAST()
2021-02-23 10:25:27 -05:00
audit_tree.c
fsnotify: generalize handle_inode_event()
2020-12-03 14:58:35 +01:00
audit_watch.c
fsnotify: generalize handle_inode_event()
2020-12-03 14:58:35 +01:00
audit.c
audit: Remove leftover reference to the audit_tasklet
2021-01-15 11:58:10 -05:00
audit.h
audit: change unnecessary globals into statics
2020-08-17 20:26:58 -04:00
auditfilter.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
auditsc.c
idmapped-mounts-v5.12
2021-02-23 13:39:45 -08:00
backtracetest.c
treewide: Replace DECLARE_TASKLET() with DECLARE_TASKLET_OLD()
2020-07-30 11:15:58 -07:00
bounds.c
…
capability.c
capability: handle idmapped mounts
2021-01-24 14:27:16 +01:00
compat.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
configs.c
…
context_tracking.c
…
cpu_pm.c
notifier: Fix broken error handling pattern
2020-09-01 09:58:03 +02:00
cpu.c
cpu/hotplug: Add lockdep_is_cpus_held()
2021-01-06 16:24:59 -08:00
crash_core.c
kdump: append uts_namespace.name offset to VMCOREINFO
2020-12-15 22:46:18 -08:00
crash_dump.c
…
cred.c
…
delayacct.c
…
dma.c
…
exec_domain.c
…
exit.c
kernel/io_uring: cancel io_uring before task works
2020-12-30 19:36:54 -07:00
extable.c
…
fail_function.c
fault-injection: handle EI_ETYPE_TRUE
2020-12-15 22:46:19 -08:00
fork.c
kernel: provide create_io_thread() helper
2021-03-04 15:45:03 -07:00
freezer.c
…
futex.c
Merge branch 'linus' into locking/core, to pick up upstream fixes
2021-02-12 12:54:58 +01:00
gen_kheaders.sh
…
groups.c
groups: simplify struct group_info allocation
2021-02-26 09:41:03 -08:00
hung_task.c
kernel/hung_task.c: make type annotations consistent
2020-11-02 12:14:19 -08:00
iomem.c
…
irq_work.c
irq_work: Optimize irq_work_single()
2020-11-24 16:47:49 +01:00
jump_label.c
jump_label: Fix usage in module __init
2020-12-18 16:53:12 +01:00
kallsyms.c
kallsyms: only build {,module_}kallsyms_on_each_symbol when required
2021-02-08 12:24:04 +01:00
kcmp.c
Merge branch 'exec-update-lock-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2020-12-15 19:36:48 -08:00
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.locks
…
Kconfig.preempt
preempt: Introduce CONFIG_PREEMPT_DYNAMIC
2021-02-17 14:12:24 +01:00
kcov.c
kernel: make kcov_common_handle consider the current context
2020-11-02 18:00:20 -08:00
kexec_core.c
Merge branch 'work.elf-compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2021-02-21 09:29:23 -08:00
kexec_elf.c
…
kexec_file.c
ima: Free IMA measurement buffer after kexec syscall
2021-02-10 15:49:38 -05:00
kexec_internal.h
kexec: move machine_kexec_post_load() to public interface
2021-02-22 12:33:26 +00:00
kexec.c
LSM: Introduce kernel_post_load_data() hook
2020-10-05 13:37:03 +02:00
kheaders.c
…
kmod.c
kmod: remove redundant "be an" in the comment
2020-08-12 10:58:01 -07:00
kprobes.c
kprobes: Fix to delay the kprobes jump optimization
2021-02-19 14:57:12 -05:00
ksysfs.c
…
kthread.c
- Correct the marking of kthreads which are supposed to run on a specific,
2021-01-24 10:09:20 -08:00
latencytop.c
…
Makefile
kcmp: Support selection of SYS_kcmp without CHECKPOINT_RESTORE
2021-02-16 09:59:41 +01:00
module_signature.c
module: harden ELF info handling
2021-01-19 10:24:45 +01:00
module_signing.c
module: harden ELF info handling
2021-01-19 10:24:45 +01:00
module-internal.h
…
module.c
module: potential uninitialized return in module_kallsyms_on_each_symbol()
2021-02-10 16:57:04 +01:00
notifier.c
notifier: Fix broken error handling pattern
2020-09-01 09:58:03 +02:00
nsproxy.c
fixes-v5.11
2020-12-14 16:40:27 -08:00
padata.c
padata: fix possible padata_works_lock deadlock
2020-09-04 17:51:55 +10:00
panic.c
panic: don't dump stack twice on warn
2020-11-14 11:26:04 -08:00
params.c
Modules updates for v5.11
2020-12-17 13:01:31 -08:00
pid_namespace.c
fixes-v5.11
2020-12-14 16:40:27 -08:00
pid.c
Merge branch 'exec-update-lock-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2020-12-15 19:36:48 -08:00
profile.c
…
ptrace.c
kernel: treat PF_IO_WORKER like PF_KTHREAD for ptrace/signals
2021-02-21 17:25:22 -07:00
range.c
kernel.h: split out min()/max() et al. helpers
2020-10-16 11:11:19 -07:00
reboot.c
reboot: hide from sysfs not applicable settings
2020-12-15 22:46:19 -08:00
regset.c
regset: kill ->get()
2020-07-27 14:31:12 -04:00
relay.c
relay: allow the use of const callback structs
2020-12-15 22:46:18 -08:00
resource_kunit.c
resource: provide meaningful MODULE_LICENSE() in test suite
2020-11-25 18:52:35 +01:00
resource.c
resource: Move devmem revoke code to resource framework
2021-01-12 14:26:31 +01:00
rseq.c
…
scftorture.c
scftorture: Add debug output for wrong-CPU warning
2021-01-04 13:53:41 -08:00
scs.c
scs: switch to vmapped shadow stacks
2020-12-01 10:30:28 +00:00
seccomp.c
seccomp: Improve performace by optimizing rmb()
2021-02-10 12:40:11 -08:00
signal.c
kernel: treat PF_IO_WORKER like PF_KTHREAD for ptrace/signals
2021-02-21 17:25:22 -07:00
smp.c
smp: Process pending softirqs in flush_smp_call_function_from_idle()
2021-02-17 14:12:42 +01:00
smpboot.c
kthread: Extract KTHREAD_IS_PER_CPU
2021-01-22 15:09:42 +01:00
smpboot.h
…
softirq.c
softirq: Move do_softirq_own_stack() to generic asm header
2021-02-10 23:34:16 +01:00
stackleak.c
stackleak: let stack_erasing_sysctl take a kernel pointer buffer
2020-09-19 13:13:39 -07:00
stacktrace.c
stacktrace: Remove reliable argument from arch_stack_walk() callback
2020-09-18 14:24:16 +01:00
static_call.c
static_call: Allow module use without exposing static_call_key
2021-02-17 14:12:42 +01:00
stop_machine.c
Merge branch 'linus' into sched/core, to resolve semantic conflict
2020-11-27 11:10:50 +01:00
sys_ni.c
epoll: wire up syscall epoll_pwait2
2020-12-19 11:18:38 -08:00
sys.c
Kbuild updates for v5.12
2021-02-25 10:17:31 -08:00
sysctl-test.c
…
sysctl.c
sysctl.c: fix underflow value setting risk in vm_table
2021-02-26 09:41:03 -08:00
task_work.c
task_work: remove legacy TWA_SIGNAL path
2020-12-12 09:17:38 -07:00
taskstats.c
treewide: rename nla_strlcpy to nla_strscpy.
2020-11-16 08:08:54 -08:00
test_kprobes.c
…
torture.c
torture: Maintain torture-specific set of CPUs-online books
2021-01-06 17:17:22 -08:00
tracepoint.c
tracepoints: Code clean up
2021-02-09 12:27:29 -05:00
tsacct.c
…
ucount.c
…
uid16.c
…
uid16.h
…
umh.c
usermodehelper: reset umask to default before executing user process
2020-10-06 10:31:52 -07:00
up.c
…
user_namespace.c
fixes-v5.11
2020-12-14 16:40:27 -08:00
user-return-notifier.c
…
user.c
user: Use generic ns_common::count
2020-08-19 14:14:12 +02:00
usermode_driver.c
…
utsname_sysctl.c
…
utsname.c
uts: Use generic ns_common::count
2020-08-19 14:13:20 +02:00
watch_queue.c
watch_queue: rectify kernel-doc for init_watch()
2021-01-26 11:16:34 +00:00
watchdog_hld.c
…
watchdog.c
kernel/watchdog: fix watchdog_allowed_mask not used warning
2020-11-14 11:26:03 -08:00
workqueue_internal.h
…
workqueue.c
Merge branch 'for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
2021-02-22 17:06:54 -08:00