Ingo Molnar f4bb570511 sched/nohz: Remove unnecessarily complex error handling pattern from find_new_ilb() ...

find_new_ilb() returns nr_cpu_ids on failure - which is the usual
cpumask bitops return pattern, but is weird & unnecessary in this
context: not only is it a global variable, it it is a +1 out of
bounds CPU index and also has different signedness ...

Its only user, kick_ilb(), then checks the return against nr_cpu_ids
to decide to return. There's no other use.

So instead of this, use a standard -1 return on failure to find an
idle CPU, as the argument is signed already.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Link: https://lore.kernel.org/r/20231006102518.2452758-4-mingo@kernel.org

2023-10-09 12:21:23 +02:00

..

bpf

Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

2023-09-16 11:16:00 +01:00

cgroup

cgroup: fix build when CGROUP_SCHED is not enabled

2023-09-02 08:27:17 -07:00

configs

Merge tag 'kbuild-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

2023-09-05 11:01:47 -07:00

debug

Merge tag 'printk-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux

2023-09-04 13:20:19 -07:00

dma

swiotlb: fix the check whether a device has used software IO TLB

2023-09-27 11:19:15 +02:00

entry

entry: Remove empty addr_limit_user_check()

2023-08-23 10:32:39 +02:00

events

Merge tag 'powerpc-6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2023-08-31 12:43:10 -07:00

futex

mm/mm_init.c: remove obsolete macro HASH_SMALL

2023-08-18 10:12:07 -07:00

gcov

gcov: shut up missing prototype warnings for internal stubs

2023-08-18 10:18:58 -07:00

irq

Merge tag 'irq-core-2023-08-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2023-08-28 14:33:11 -07:00

kcsan

kcsan: Don't expect 64 bits atomic builtins from 32 bits architectures

2023-06-09 23:29:50 +10:00

livepatch

livepatch: Make 'klp_stack_entries' static

2023-06-05 13:56:52 +02:00

locking

Merge tag 'mm-nonmm-stable-2023-08-28-22-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2023-08-29 14:53:51 -07:00

module

module/decompress: use vmalloc() for zstd decompression workspace

2023-08-29 09:39:08 -07:00

power

PM: hibernate: Fix the exclusive get block device in test_resume mode

2023-09-12 11:45:15 +02:00

printk

Revert "printk: export symbols for debug modules"

2023-09-07 14:19:42 +02:00

rcu

Merge tag 'tty-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2023-09-01 09:38:00 -07:00

sched

sched/nohz: Remove unnecessarily complex error handling pattern from find_new_ilb()

2023-10-09 12:21:23 +02:00

time

Merge tag 'timers-urgent-2023-09-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2023-09-02 09:01:48 -07:00

trace

tracing/user_events: Align set_bit() address for all archs

2023-09-30 16:25:41 -04:00

.gitignore

…

acct.c

Merge tag 'audit-pr-20230829' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit

2023-08-30 08:17:35 -07:00

async.c

…

audit_fsnotify.c

audit: fix potential double free on error path from fsnotify_add_inode_mark

2022-08-22 18:50:06 -04:00

audit_tree.c

…

audit_watch.c

audit_init_parent(): constify path

2022-09-01 17:39:30 -04:00

audit.c

audit: move trailing statements to next line

2023-08-15 18:16:14 -04:00

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

Merge tag 'net-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2023-09-07 18:33:07 -07:00

backtracetest.c

…

bounds.c

mm: multi-gen LRU: minimal implementation

2022-09-26 19:46:09 -07:00

capability.c

lsm: constify the 'target' parameter in security_capget()

2023-08-08 16:48:47 -04:00

cfi.c

cfi: Switch to -fsanitize=kcfi

2022-09-26 10:13:13 -07:00

compat.c

sched_getaffinity: don't assume 'cpumask_size()' is fully initialized

2023-03-14 19:32:38 -07:00

configs.c

…

context_tracking.c

locking/atomic: treewide: use raw_atomic*_<op>()

2023-06-05 09:57:20 +02:00

cpu_pm.c

cpuidle, cpu_pm: Remove RCU fiddling from cpu_pm_{enter,exit}()

2023-01-13 11:48:15 +01:00

cpu.c

cpu/hotplug: Prevent self deadlock on CPU hot-unplug

2023-08-30 12:24:22 +02:00

crash_core.c

Crash: add lock to serialize crash hotplug handling

2023-09-29 17:20:48 -07:00

crash_dump.c

…

cred.c

cred: convert printks to pr_<level>

2023-08-18 10:18:49 -07:00

delayacct.c

delayacct: track delays from IRQ/SOFTIRQ

2023-04-18 16:39:34 -07:00

dma.c

…

exec_domain.c

…

exit.c

fork, vhost: Use CLONE_THREAD to fix freezer/ps regression

2023-06-01 17:15:33 -04:00

extable.c

…

fail_function.c

kernel/fail_function: fix memory leak with using debugfs_lookup()

2023-02-08 13:36:22 +01:00

fork.c

Merge tag 'percpu-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu

2023-09-01 15:44:45 -07:00

freezer.c

freezer,sched: Use saved_state to reduce some spurious wakeups

2023-09-18 08:14:36 +02:00

gen_kheaders.sh

Revert "kheaders: substituting --sort in archive creation"

2023-05-28 16:20:21 +09:00

groups.c

…

hung_task.c

kernel/hung_task.c: set some hung_task.c variables storage-class-specifier to static

2023-04-08 13:45:37 -07:00

iomem.c

kernel/iomem.c: remove __weak ioremap_cache helper

2023-08-21 13:37:28 -07:00

irq_work.c

trace: Add trace_ipi_send_cpu()

2023-03-24 11:01:29 +01:00

jump_label.c

jump_label: Prevent key->enabled int overflow

2022-12-01 15:53:05 -08:00

kallsyms_internal.h

kallsyms: Reduce the memory occupied by kallsyms_seqs_of_names[]

2022-11-12 18:47:36 -08:00

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: Add self-test facility

2022-11-15 00:42:02 -08:00

kallsyms.c

kallsyms: Change func signature for cleanup_symbol_name()

2023-08-25 15:00:36 -07:00

kcmp.c

…

Kconfig.freezer

…

Kconfig.hz

…

Kconfig.kexec

crash: hotplug support for kexec_load()

2023-08-24 16:25:14 -07:00

Kconfig.locks

…

Kconfig.preempt

…

kcov.c

kcov: add prototypes for helper functions

2023-06-09 17:44:17 -07:00

kexec_core.c

crash: add generic infrastructure for crash hotplug support

2023-08-24 16:25:13 -07:00

kexec_elf.c

…

kexec_file.c

Merge tag 'integrity-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity

2023-08-30 09:16:56 -07:00

kexec_internal.h

panic, kexec: make __crash_kexec() NMI safe

2022-09-11 21:55:06 -07:00

kexec.c

crash: hotplug support for kexec_load()

2023-08-24 16:25:14 -07:00

kheaders.c

kheaders: Use array declaration instead of char

2023-03-24 20:10:59 -07:00

kprobes.c

kernel: kprobes: Use struct_size()

2023-08-23 09:38:17 +09:00

ksyms_common.c

kallsyms: make kallsyms_show_value() as generic function

2023-06-08 12:27:20 -07:00

ksysfs.c

crash: hotplug support for kexec_load()

2023-08-24 16:25:14 -07:00

kthread.c

kthread: unexport __kthread_should_park()

2023-08-18 10:18:59 -07:00

latencytop.c

latencytop: use the last element of latency_record of system

2022-09-11 21:55:12 -07:00

Makefile

Merge tag 'v6.5-rc1-modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux

2023-06-28 15:51:08 -07:00

module_signature.c

…

notifier.c

notifiers: add tracepoints to the notifiers infrastructure

2023-04-08 13:45:38 -07:00

nsproxy.c

nsproxy: Convert nsproxy.count to refcount_t

2023-08-21 11:29:12 -07:00

padata.c

padata: use alignment when calculating the number of worker threads

2023-03-14 17:06:44 +08:00

panic.c

panic: Reenable preemption in WARN slowpath

2023-09-15 11:28:08 +02:00

params.c

kernel: params: Remove unnecessary ‘0’ values from err

2023-07-10 12:47:01 -07:00

pid_namespace.c

memfd: replace ratcheting feature from vm.memfd_noexec with hierarchy

2023-08-21 13:37:59 -07:00

pid_sysctl.h

memfd: replace ratcheting feature from vm.memfd_noexec with hierarchy

2023-08-21 13:37:59 -07:00

pid.c

pidfd: prevent a kernel-doc warning

2023-09-19 13:21:33 -07:00

profile.c

kernel/profile.c: simplify duplicated code in profile_setup()

2022-09-11 21:55:12 -07:00

ptrace.c

ptrace: Provide set/get interface for syscall user dispatch

2023-04-16 14:23:07 +02:00

range.c

…

reboot.c

kernel/reboot: Add SYS_OFF_MODE_RESTART_PREPARE mode

2022-10-04 15:59:36 +02:00

regset.c

…

relay.c

kernel: relay: remove unnecessary NULL values from relay_open_buf

2023-08-18 10:18:55 -07:00

resource_kunit.c

…

resource.c

dax/kmem: Fix leak of memory-hotplug resources

2023-02-17 14:58:01 -08:00

rseq.c

rseq: Extend struct rseq with per-memory-map concurrency ID

2022-12-27 12:52:12 +01:00

scftorture.c

scftorture: Pause testing after memory-allocation failure

2023-07-14 15:02:57 -07:00

scs.c

scs: add support for dynamic shadow call stacks

2022-11-09 18:06:35 +00:00

seccomp.c

seccomp: Add missing kerndoc notations

2023-08-17 12:32:15 -07:00

signal.c

signal: print comm and exe name on fatal signals

2023-08-18 10:18:50 -07:00

smp.c

smp: Reduce NMI traffic from CSD waiters to CSD destination

2023-07-10 14:19:04 -07:00

smpboot.c

cpu/hotplug: Remove unused state functions

2023-05-15 13:45:00 +02:00

smpboot.h

…

softirq.c

sched/core: introduce sched_core_idle_cpu()

2023-07-13 15:21:50 +02:00

stackleak.c

stackleak: allow to specify arch specific stackleak poison function

2023-04-20 11:36:35 +02:00

stacktrace.c

…

static_call_inline.c

static_call: Add call depth tracking support

2022-10-17 16:41:16 +02:00

static_call.c

…

stop_machine.c

…

sys_ni.c

x86/shstk: Introduce map_shadow_stack syscall

2023-08-02 15:01:51 -07:00

sys.c

prctl: move PR_GET_AUXV out of PR_MCE_KILL

2023-07-17 12:53:21 -07:00

sysctl-test.c

kernel/sysctl-test: use SYSCTL_{ZERO/ONE_HUNDRED} instead of i_{zero/one_hundred}

2022-09-08 16:56:45 -07:00

sysctl.c

Merge tag 'v6.5-rc1-sysctl-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux

2023-06-28 16:05:21 -07:00

task_work.c

task_work: add kerneldoc annotation for 'data' argument

2023-09-19 13:21:32 -07:00

taskstats.c

genetlink: start to validate reserved header bytes

2022-08-29 12:47:15 +01:00

torture.c

torture: Stop right-shifting torture_random() return values

2023-08-14 15:01:08 -07:00

tracepoint.c

tracepoint: Allow livepatch module add trace event

2023-02-18 14:34:36 -05:00

tsacct.c

…

ucount.c

sysctl: Add size to register_sysctl

2023-08-15 15:26:17 -07:00

uid16.c

…

uid16.h

…

umh.c

sysctl: fix unused proc_cap_handler() function warning

2023-06-29 15:19:43 -07:00

up.c

…

user_namespace.c

userns: fix a struct's kernel-doc notation

2023-02-02 22:50:04 -08:00

user-return-notifier.c

…

user.c

kernel/user: Allow user_struct::locked_vm to be usable for iommufd

2022-11-30 20:16:49 -04:00

usermode_driver.c

…

utsname_sysctl.c

utsname: simplify one-level sysctl registration for uts_kern_table

2023-04-13 11:49:35 -07:00

utsname.c

…

vhost_task.c

vhost: Fix worker hangs due to missed wake up calls

2023-06-08 15:43:09 -04:00

watch_queue.c

watch_queue: prevent dangling pipe pointer

2023-06-06 10:47:04 +02:00

watchdog_buddy.c

watchdog/hardlockup: move SMP barriers from common code to buddy code

2023-06-19 16:25:28 -07:00

watchdog_perf.c

watchdog/perf: add a weak function for an arch to detect if perf can use NMIs

2023-06-09 17:44:21 -07:00

watchdog.c

watchdog/hardlockup: avoid large stack frames in watchdog_hardlockup_check()

2023-08-18 10:19:00 -07:00

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: Fix missed pwq_release_worker creation in wq_cpu_intensive_thresh_init()

2023-09-18 08:50:31 -10:00