linux-stable/kernel
Joel Fernandes (Google) ea134c3e80 tick/nohz: Fix cpu_is_hotpluggable() by checking with nohz subsystem
[ Upstream commit 58d7668242 ]

For CONFIG_NO_HZ_FULL systems, the tick_do_timer_cpu cannot be offlined.
However, cpu_is_hotpluggable() still returns true for those CPUs. This causes
torture tests that do offlining to end up trying to offline this CPU causing
test failures. Such failure happens on all architectures.

Fix the repeated error messages thrown by this (even if the hotplug errors are
harmless) by asking the opinion of the nohz subsystem on whether the CPU can be
hotplugged.

[ Apply Frederic Weisbecker feedback on refactoring tick_nohz_cpu_down(). ]

For drivers/base/ portion:
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Frederic Weisbecker <frederic@kernel.org>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Zhouyi Zhou <zhouzhouyi@gmail.com>
Cc: Will Deacon <will@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: rcu <rcu@vger.kernel.org>
Cc: stable@vger.kernel.org
Fixes: 2987557f52 ("driver-core/cpu: Expose hotpluggability to the rest of the kernel")
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-05-17 11:13:22 +02:00
..
bpf bpf: Adjust insufficient default bpf_jit_limit 2023-04-05 11:15:34 +02:00
cgroup cgroup/cpuset: Wake up cpuset_attach_wq tasks in cpuset_cancel_attach() 2023-04-20 12:04:40 +02:00
configs
debug kdb: Make memory allocations more robust 2021-03-04 09:39:31 +01:00
dma swiotlb: skip swiotlb_bounce when orig_addr is zero 2022-07-02 16:27:40 +02:00
events perf/core: Fix hardlockup failure caused by perf throttle 2023-05-17 11:13:18 +02:00
gcov gcov: add support for checksum field 2023-01-18 11:30:39 +01:00
irq irqdomain: Drop bogus fwspec-mapping error handling 2023-03-11 16:31:52 +01:00
livepatch livepatch: fix race between fork and KLP transition 2022-10-26 13:19:23 +02:00
locking locking/lockdep: Avoid RCU-induced noinstr fail 2021-11-26 11:36:04 +01:00
power PM: hibernate: Allow hybrid sleep to work with s2idle 2022-11-03 23:52:31 +09:00
printk printk: fix return value of printk.devkmsg __setup handler 2022-04-15 14:14:45 +02:00
rcu rcu: Suppress smp_processor_id() complaint in synchronize_rcu_expedited_wait() 2023-03-11 16:31:45 +01:00
sched sched_getaffinity: don't assume 'cpumask_size()' is fully initialized 2023-04-05 11:15:39 +02:00
time tick/nohz: Fix cpu_is_hotpluggable() by checking with nohz subsystem 2023-05-17 11:13:22 +02:00
trace ring-buffer: Sync IRQ works before buffer destruction 2023-05-17 11:13:07 +02:00
.gitignore
acct.c acct: fix potential integer overflow in encode_comp_t() 2023-01-18 11:30:34 +01:00
async.c Revert "module, async: async_synchronize_full() on module init iff async is used" 2022-02-23 11:58:38 +01:00
audit.c audit: improve audit queue handling when "audit=1" on cmdline 2022-02-08 18:23:13 +01:00
audit.h audit: fix a net reference leak in audit_list_rules_send() 2020-06-22 09:05:13 +02:00
audit_fsnotify.c audit: fix potential double free on error path from fsnotify_add_inode_mark 2022-09-05 10:26:28 +02:00
audit_tree.c audit: Embed key into chunk 2019-12-13 08:51:11 +01:00
audit_watch.c audit: CONFIG_CHANGE don't log internal bookkeeping as an event 2020-10-01 13:14:33 +02:00
auditfilter.c audit: fix a net reference leak in audit_list_rules_send() 2020-06-22 09:05:13 +02:00
auditsc.c audit: print empty EXECVE args 2019-12-01 09:17:17 +01:00
backtracetest.c
bounds.c kbuild: fix kernel/bounds.c 'W=1' warning 2018-11-13 11:08:47 -08:00
capability.c LSM: generalize flag passing to security_capable 2020-01-23 08:21:29 +01:00
compat.c sched_getaffinity: don't assume 'cpumask_size()' is fully initialized 2023-04-05 11:15:39 +02:00
configs.c
context_tracking.c
cpu.c random: clear fast pool, crng, and batches in cpuhp bring up 2022-06-25 11:49:07 +02:00
cpu_pm.c kernel/cpu_pm: Fix uninitted local in cpu_pm 2020-06-22 09:05:28 +02:00
crash_core.c kernel/crash_core.c: print timestamp using time64_t 2018-08-22 10:52:47 -07:00
crash_dump.c
cred.c memcg: account security cred as well to kmemcg 2020-01-09 10:19:00 +01:00
delayacct.c
dma.c
exec_domain.c
exit.c exit: Use READ_ONCE() for all oops/warn limit reads 2023-02-06 07:49:46 +01:00
extable.c
fail_function.c fail_function: Remove a redundant mutex unlock 2020-11-24 13:27:23 +01:00
fork.c mm/hugetlb: initialize hugetlb_usage in mm_init 2021-09-22 11:48:09 +02:00
freezer.c PM / reboot: Eliminate race between reboot and suspend 2018-08-06 12:35:20 +02:00
futex.c mm, futex: fix shared futex pgoff on shmem huge page 2021-07-11 12:49:30 +02:00
groups.c
hung_task.c kernel: hung_task.c: disable on suspend 2019-04-20 09:16:02 +02:00
iomem.c
irq_work.c irq_work: Do not raise an IPI when queueing work on the local CPU 2019-05-31 06:46:19 -07:00
jump_label.c locking/static_key: Fix false positive warnings on concurrent dec/inc 2021-03-04 09:39:30 +01:00
kallsyms.c kallsyms: Refactor kallsyms_show_value() to take cred 2020-07-16 08:17:26 +02:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c kernel/kcov.c: mark write_comp_data() as notrace 2019-02-12 19:47:20 +01:00
kexec.c
kexec_core.c kernel: kexec: remove the lock operation of system_transition_mutex 2021-02-03 23:23:23 +01:00
kexec_file.c kexec_file: drop weak attribute from arch_kexec_apply_relocations[_add] 2022-07-02 16:27:39 +02:00
kexec_internal.h
kmod.c kmod: make request_module() return an error when autoloading is disabled 2020-04-17 10:48:52 +02:00
kprobes.c x86/kprobes: Fix arch_check_optimized_kprobe check within optimized_kprobe range 2023-03-11 16:31:51 +01:00
ksysfs.c
kthread.c kthread: prevent deadlock when kthread_mod_delayed_work() races with kthread_cancel_delayed_work_sync() 2021-07-11 12:49:31 +02:00
latencytop.c
Makefile elfcore: fix building with clang 2021-02-10 09:21:06 +01:00
memremap.c mm/memory_hotplug: shrink zones when offlining memory 2020-01-29 16:43:27 +01:00
module-internal.h
module.c module: Don't wait for GOING modules 2023-02-06 07:49:41 +01:00
module_signing.c
notifier.c x86/mm: split vmalloc_sync_all() 2020-03-25 08:06:13 +01:00
nsproxy.c
padata.c padata: add separate cpuhp node for CPUHP_PADATA_DEAD 2021-08-08 08:54:30 +02:00
panic.c exit: Use READ_ONCE() for all oops/warn limit reads 2023-02-06 07:49:46 +01:00
params.c
pid.c Fix failure path in alloc_pid() 2019-01-13 09:51:06 +01:00
pid_namespace.c memcg: enable accounting for pids in nested pid namespaces 2021-09-22 11:48:09 +02:00
profile.c profiling: fix shift too large makes kernel panic 2022-08-25 11:15:20 +02:00
ptrace.c ptrace: Reimplement PTRACE_KILL by always sending SIGKILL 2022-06-14 16:59:14 +02:00
range.c
reboot.c reboot: fix overflow parsing reboot cpu number 2020-11-18 19:18:52 +01:00
relay.c relay: fix type mismatch when allocating memory in relay_create_buf() 2023-01-18 11:30:08 +01:00
resource.c resource: fix locking in find_next_iomem_res() 2019-09-16 08:22:20 +02:00
rseq.c
seccomp.c seccomp: Invalidate seccomp mode to catch death failures 2022-02-16 12:51:47 +01:00
signal.c signal handling: don't use BUG_ON() for debugging 2022-07-21 21:09:32 +02:00
smp.c smp: Fix offline cpu check in flush_smp_call_function_queue() 2022-04-20 09:12:50 +02:00
smpboot.c kthread: Extract KTHREAD_IS_PER_CPU 2021-02-07 14:48:38 +01:00
smpboot.h
softirq.c
stacktrace.c
stop_machine.c Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-08-13 11:25:07 -07:00
sys.c prlimit: do_prlimit needs to have a speculation check 2023-01-24 07:11:49 +01:00
sys_ni.c kernel/sys_ni: add compat entry for fadvise64_64 2022-09-05 10:26:28 +02:00
sysctl.c proc: proc_skip_spaces() shouldn't think it is working on C strings 2022-12-08 11:18:32 +01:00
sysctl_binary.c
task_work.c
taskstats.c taskstats: fix data-race 2020-01-09 10:18:59 +01:00
test_kprobes.c
torture.c
tracepoint.c tracepoint: Add tracepoint_probe_register_may_exist() for BPF tracing 2021-07-20 16:15:42 +02:00
tsacct.c taskstats: Cleanup the use of task->exit_code 2022-02-23 11:58:39 +01:00
ucount.c
uid16.c
uid16.h
umh.c usermodehelper: reset umask to default before executing user process 2020-10-14 10:31:21 +02:00
up.c smp: Fix smp_call_function_single_async prototype 2021-05-22 10:59:39 +02:00
user-return-notifier.c
user.c userns: use irqsave variant of refcount_dec_and_lock() 2018-08-22 10:52:47 -07:00
user_namespace.c userns: also map extents in the reverse map to kernel IDs 2018-11-13 11:09:00 -08:00
utsname.c
utsname_sysctl.c sys: don't hold uts_sem while accessing userspace memory 2018-08-11 02:05:53 -05:00
watchdog.c watchdog: export lockup_detector_reconfigure 2022-08-25 11:15:46 +02:00
watchdog_hld.c watchdog: Mark watchdog touch functions as notrace 2018-08-30 12:56:40 +02:00
workqueue.c workqueue: don't skip lockdep work dependency in cancel_work_sync() 2022-09-28 11:02:58 +02:00
workqueue_internal.h