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7bd20b6b87183db2ebf789bcf9d0aa6d06a0defb
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Marcelo Tosatti 7bd20b6b87 workqueue: mark power efficient workqueue as unbounded if nohz_full enabled 
A customer using nohz_full has experienced the following interruption:

oslat-1004510 [018] timer_cancel:         timer=0xffff90a7ca663cf8
oslat-1004510 [018] timer_expire_entry:   timer=0xffff90a7ca663cf8 function=delayed_work_timer_fn now=4709188240 baseclk=4709188240
oslat-1004510 [018] workqueue_queue_work: work struct=0xffff90a7ca663cd8 function=fb_flashcursor workqueue=events_power_efficient req_cpu=8192 cpu=18
oslat-1004510 [018] workqueue_activate_work: work struct 0xffff90a7ca663cd8
oslat-1004510 [018] sched_wakeup:         kworker/18:1:326 [120] CPU:018
oslat-1004510 [018] timer_expire_exit:    timer=0xffff90a7ca663cf8
oslat-1004510 [018] irq_work_entry:       vector=246
oslat-1004510 [018] irq_work_exit:        vector=246
oslat-1004510 [018] tick_stop:            success=0 dependency=SCHED
oslat-1004510 [018] hrtimer_start:        hrtimer=0xffff90a70009cb00 function=tick_sched_timer/0x0 ...
oslat-1004510 [018] softirq_exit:         vec=1 [action=TIMER]
oslat-1004510 [018] softirq_entry:        vec=7 [action=SCHED]
oslat-1004510 [018] softirq_exit:         vec=7 [action=SCHED]
oslat-1004510 [018] tick_stop:            success=0 dependency=SCHED
oslat-1004510 [018] sched_switch:         oslat:1004510 [120] R ==> kworker/18:1:326 [120]
kworker/18:1-326 [018] workqueue_execute_start: work struct 0xffff90a7ca663cd8: function fb_flashcursor
kworker/18:1-326 [018] workqueue_queue_work: work struct=0xffff9078f119eed0 function=drm_fb_helper_damage_work workqueue=events req_cpu=8192 cpu=18
kworker/18:1-326 [018] workqueue_activate_work: work struct 0xffff9078f119eed0
kworker/18:1-326 [018] timer_start:          timer=0xffff90a7ca663cf8 function=delayed_work_timer_fn ...

Set wq_power_efficient to true, in case nohz_full is enabled.
This makes the power efficient workqueue be unbounded, which allows
workqueue items there to be moved to HK CPUs.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2024-01-19 13:55:47 -10:00
..
bpf
Merge tag 'net-next-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
2024-01-11 10:07:29 -08:00
cgroup
Merge tag 'cgroup-for-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
2024-01-08 20:04:02 -08:00
configs
hardening: Provide Kconfig fragments for basic options
2023-09-22 09:50:55 -07:00
debug
kdb: Corrects comment for kdballocenv
2023-11-06 17:13:55 +00:00
dma
Merge tag 'dma-mapping-6.8-2024-01-08' of git://git.infradead.org/users/hch/dma-mapping
2024-01-11 13:46:50 -08:00
entry
entry: Move syscall_enter_from_user_mode() to header file
2023-12-21 23:12:18 +01:00
events
Merge tag 'mm-stable-2024-01-08-15-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2024-01-09 11:18:47 -08:00
futex
plist: Split out plist_types.h
2023-12-20 19:26:31 -05:00
gcov
gcov: annotate struct gcov_iterator with __counted_by
2023-10-18 14:43:22 -07:00
irq
Merge tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2023-11-02 20:53:31 -10:00
kcsan
mm: delete checks for xor_unlock_is_negative_byte()
2023-10-18 14:34:17 -07:00
livepatch
livepatch: Fix missing newline character in klp_resolve_symbols()
2023-09-20 11:24:18 +02:00
locking
Merge tag 'rcu.release.v6.8' of https://github.com/neeraju/linux
2024-01-12 16:35:58 -08:00
module
Merge tag 'modules-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux
2024-01-10 18:00:18 -08:00
power
PM: hibernate: Repair excess function parameter description warning
2023-12-20 19:19:26 +01:00
printk
Merge tag 'tty-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
2023-11-03 15:44:25 -10:00
rcu
Merge branches 'doc.2023.12.13a', 'torture.2023.11.23a', 'fixes.2023.12.13a', 'rcu-tasks.2023.12.12b' and 'srcu.2023.12.13a' into rcu-merge.2023.12.13a
2023-12-14 01:21:31 +05:30
sched
Merge tag 'header_cleanup-2024-01-10' of https://evilpiepirate.org/git/bcachefs
2024-01-10 16:43:55 -08:00
time
Merge tag 'timers-core-2024-01-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2024-01-08 18:44:11 -08:00
trace
Merge tag 'net-next-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
2024-01-11 10:07:29 -08:00
.gitignore
…
acct.c
fs: rename __mnt_{want,drop}_write*() helpers
2023-09-11 15:05:50 +02:00
async.c
Merge tag 'header_cleanup-2024-01-10' of https://evilpiepirate.org/git/bcachefs
2024-01-10 16:43:55 -08:00
audit_fsnotify.c
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audit_tree.c
Merge tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2023-11-02 20:53:31 -10:00
audit_watch.c
audit: don't WARN_ON_ONCE(!current->mm) in audit_exe_compare()
2023-11-14 17:34:27 -05:00
audit.c
audit: Send netlink ACK before setting connection in auditd_set
2023-11-12 22:33:49 -05:00
audit.h
audit: correct audit_filter_inodes() definition
2023-07-21 12:17:25 -04:00
auditfilter.c
audit: move trailing statements to next line
2023-08-15 18:16:14 -04:00
auditsc.c
audit,io_uring: io_uring openat triggers audit reference count underflow
2023-10-13 18:34:46 +02:00
backtracetest.c
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bounds.c
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capability.c
lsm: constify the 'target' parameter in security_capget()
2023-08-08 16:48:47 -04:00
cfi.c
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compat.c
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configs.c
…
context_tracking.c
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cpu_pm.c
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cpu.c
Merge tag 'slab-for-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
2024-01-09 10:36:07 -08:00
crash_core.c
Merge tag 'mm-nonmm-stable-2024-01-09-10-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2024-01-09 11:46:20 -08:00
crash_dump.c
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cred.c
cred: get rid of CONFIG_DEBUG_CREDENTIALS
2023-12-15 14:19:48 -08:00
delayacct.c
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dma.c
…
exec_domain.c
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exit.c
Merge tag 'header_cleanup-2024-01-10' of https://evilpiepirate.org/git/bcachefs
2024-01-10 16:43:55 -08:00
exit.h
exit: add internal include file with helpers
2023-09-21 12:03:50 -06:00
extable.c
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fail_function.c
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fork.c
Merge tag 'header_cleanup-2024-01-10' of https://evilpiepirate.org/git/bcachefs
2024-01-10 16:43:55 -08:00
freezer.c
Merge tag 'v6.7-rc6' into sched/core, to pick up fixes
2023-12-23 15:52:13 +01:00
gen_kheaders.sh
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groups.c
groups: Convert group_info.usage to refcount_t
2023-09-29 11:28:39 -07:00
hung_task.c
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iomem.c
kernel/iomem.c: remove __weak ioremap_cache helper
2023-08-21 13:37:28 -07:00
irq_work.c
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jump_label.c
…
kallsyms_internal.h
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kallsyms_selftest.c
Merge tag 'modules-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux
2023-08-29 17:32:32 -07:00
kallsyms_selftest.h
…
kallsyms.c
kallsyms: Change func signature for cleanup_symbol_name()
2023-08-25 15:00:36 -07:00
kcmp.c
file: convert to SLAB_TYPESAFE_BY_RCU
2023-10-19 11:02:48 +02:00
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.kexec
kexec: select CRYPTO from KEXEC_FILE instead of depending on it
2023-12-20 13:46:19 -08:00
Kconfig.locks
…
Kconfig.preempt
…
kcov.c
…
kexec_core.c
kexec_core: fix the assignment to kimage->control_page
2023-12-29 12:22:29 -08:00
kexec_elf.c
…
kexec_file.c
kexec_file: fix incorrect temp_start value in locate_mem_hole_top_down()
2023-12-29 12:22:25 -08:00
kexec_internal.h
…
kexec.c
kernel: kexec: copy user-array safely
2023-10-09 16:59:47 +10:00
kheaders.c
…
kprobes.c
kprobes: consistent rcu api usage for kretprobe holder
2023-12-01 14:53:55 +09:00
ksyms_common.c
…
ksysfs.c
crash: hotplug support for kexec_load()
2023-08-24 16:25:14 -07:00
kthread.c
Merge tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2023-11-02 20:53:31 -10:00
latencytop.c
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Makefile
kernel/numa.c: Move logging out of numa.h
2023-12-20 19:26:30 -05:00
module_signature.c
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notifier.c
…
nsproxy.c
nsproxy: Convert nsproxy.count to refcount_t
2023-08-21 11:29:12 -07:00
numa.c
kernel/numa.c: Move logging out of numa.h
2023-12-20 19:26:30 -05:00
padata.c
padata: Fix refcnt handling in padata_free_shell()
2023-10-27 18:04:24 +08:00
panic.c
panic: use atomic_try_cmpxchg in panic() and nmi_panic()
2023-10-04 10:41:56 -07:00
params.c
params: Fix multi-line comment style
2023-12-01 09:51:44 -08:00
pid_namespace.c
wait: Remove uapi header file from main header file
2023-12-20 19:26:31 -05:00
pid_sysctl.h
memfd: replace ratcheting feature from vm.memfd_noexec with hierarchy
2023-08-21 13:37:59 -07:00
pid.c
file: remove __receive_fd()
2023-12-12 14:24:14 +01:00
profile.c
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ptrace.c
Merge tag 'mm-nonmm-stable-2024-01-09-10-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2024-01-09 11:46:20 -08:00
range.c
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reboot.c
Merge tag 'thermal-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2024-01-09 16:20:17 -08:00
regset.c
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relay.c
kernel: relay: remove relay_file_splice_read dead code, doesn't work
2023-12-29 12:22:27 -08:00
resource_kunit.c
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resource.c
Merge tag 'mm-nonmm-stable-2024-01-09-10-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2024-01-09 11:46:20 -08:00
rseq.c
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scftorture.c
scftorture: Pause testing after memory-allocation failure
2023-07-14 15:02:57 -07:00
scs.c
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seccomp.c
file: remove __receive_fd()
2023-12-12 14:24:14 +01:00
signal.c
kernel/signal.c: simplify force_sig_info_to_task(), kill recalc_sigpending_and_wake()
2023-12-10 17:21:32 -08:00
smp.c
Merge tag 'csd-lock.2023.10.23a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
2023-10-30 17:56:53 -10:00
smpboot.c
kthread: add kthread_stop_put
2023-10-04 10:41:57 -07:00
smpboot.h
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softirq.c
sched/core: introduce sched_core_idle_cpu()
2023-07-13 15:21:50 +02:00
stackleak.c
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stacktrace.c
stacktrace: fix kernel-doc typo
2023-12-29 12:22:29 -08:00
static_call_inline.c
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static_call.c
…
stop_machine.c
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sys_ni.c
Merge tag 'lsm-pr-20240105' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm
2024-01-09 12:57:46 -08:00
sys.c
prctl: Disable prctl(PR_SET_MDWE) on parisc
2023-11-18 19:35:31 +01:00
sysctl-test.c
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sysctl.c
Merge tag 'asm-generic-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
2023-11-01 15:28:33 -10:00
task_work.c
task_work: add kerneldoc annotation for 'data' argument
2023-09-19 13:21:32 -07:00
taskstats.c
taskstats: fill_stats_for_tgid: use for_each_thread()
2023-10-04 10:41:57 -07:00
torture.c
torture: Print out torture module parameters
2023-09-24 17:24:01 +02:00
tracepoint.c
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tsacct.c
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ucount.c
sysctl: Add size to register_sysctl
2023-08-15 15:26:17 -07:00
uid16.c
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uid16.h
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umh.c
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up.c
smp: Change function signatures to use call_single_data_t
2023-09-13 14:59:24 +02:00
user_namespace.c
mnt_idmapping: decouple from namespaces
2023-11-28 14:08:47 +01:00
user-return-notifier.c
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user.c
binfmt_misc: enable sandboxed mounts
2023-10-11 08:46:01 -07:00
usermode_driver.c
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utsname_sysctl.c
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utsname.c
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vhost_task.c
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watch_queue.c
watch_queue: fix kcalloc() arguments order
2023-12-21 13:17:54 +01:00
watchdog_buddy.c
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watchdog_perf.c
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watchdog.c
watchdog: if panicking and we dumped everything, don't re-enable dumping
2023-12-29 12:22:30 -08:00
workqueue_internal.h
workqueue: Drop the special locking rule for worker->flags and worker_pool->flags
2023-08-07 15:57:22 -10:00
workqueue.c
workqueue: mark power efficient workqueue as unbounded if nohz_full enabled
2024-01-19 13:55:47 -10:00