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android_kernel_motorola_sm6375/kernel/time
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Repository files (latest commit first)
Filename Latest commit message Latest commit date
Oleg Nesterov fd093ae0d3 tick/nohz_full: Don't abuse smp_call_function_single() in tick_setup_device() 
commit 07c54cc5988f19c9642fd463c2dbdac7fc52f777 upstream.

After the recent commit 5097cbcb38e6 ("sched/isolation: Prevent boot crash
when the boot CPU is nohz_full") the kernel no longer crashes, but there is
another problem.

In this case tick_setup_device() calls tick_take_do_timer_from_boot() to
update tick_do_timer_cpu and this triggers the WARN_ON_ONCE(irqs_disabled)
in smp_call_function_single().

Kill tick_take_do_timer_from_boot() and just use WRITE_ONCE(), the new
comment explains why this is safe (thanks Thomas!).

Fixes: 08ae95f4fd ("nohz_full: Allow the boot CPU to be nohz_full")
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240528122019.GA28794@redhat.com
Link: https://lore.kernel.org/all/20240522151742.GA10400@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-07-05 09:08:19 +02:00
..
alarmtimer.c alarmtimer: Prevent starvation by small intervals and SIG_IGN 2023-02-25 11:53:26 +01:00
clockevents.c
clocksource.c clocksource: Retry clock read if long delays detected 2021-07-14 16:53:18 +02:00
hrtimer.c hrtimer: Report offline hrtimer enqueue 2024-02-23 08:25:08 +01:00
itimer.c
jiffies.c timekeeping: Split jiffies seqlock 2023-05-17 11:35:39 +02:00
Kconfig
Makefile
ntp.c
ntp_internal.h
posix-clock.c
posix-cpu-timers.c Revert "posix-cpu-timers: Force next expiration recalc after itimer reset" 2021-09-16 12:56:13 +02:00
posix-stubs.c timers: Prevent union confusion from unexpected restart_syscall() 2023-03-11 16:43:54 +01:00
posix-timers.c posix-timers: Ensure timer ID search-loop limit is valid 2023-07-27 08:37:42 +02:00
posix-timers.h
sched_clock.c
test_udelay.c
tick-broadcast-hrtimer.c
tick-broadcast.c tick: Get rid of tick_period 2023-05-17 11:35:40 +02:00
tick-common.c tick/nohz_full: Don't abuse smp_call_function_single() in tick_setup_device() 2024-07-05 09:08:19 +02:00
tick-internal.h tick: Get rid of tick_period 2023-05-17 11:35:40 +02:00
tick-oneshot.c
tick-sched.c tick/sched: Preserve number of idle sleeps across CPU hotplug events 2024-02-23 08:24:53 +01:00
tick-sched.h
time.c
timeconst.bc
timeconv.c
timecounter.c
timekeeping.c timekeeping: Fix cross-timestamp interpolation for non-x86 2024-03-26 18:22:14 -04:00
timekeeping.h timekeeping: Split jiffies seqlock 2023-05-17 11:35:39 +02:00
timekeeping_debug.c
timekeeping_internal.h
timer.c timers: Rename del_timer_sync() to timer_delete_sync() 2024-04-13 12:51:21 +02:00
timer_list.c
vsyscall.c