Oleg Nesterov 07c54cc598 tick/nohz_full: Don't abuse smp_call_function_single() in tick_setup_device() ... After the recent commit 5097cbcb38 ("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		2024-06-10 20:18:13 +02:00
..
alarmtimer.c	rtc: class: make rtc_class constant	2024-03-08 12:05:10 +01:00
clockevents.c	clockevents: Convert s[n]printf() to sysfs_emit()	2024-04-09 12:32:37 +02:00
clocksource-wdtest.c	clocksource: Scale the watchdog read retries automatically	2024-02-21 12:00:42 +01:00
clocksource.c	clocksource: Convert s[n]printf() to sysfs_emit()	2024-04-09 12:32:37 +02:00
hrtimer.c	hrtimer: Rename __hrtimer_hres_active() to hrtimer_hres_active()	2024-04-22 16:13:19 +02:00
itimer.c
jiffies.c	clocksource: Make clocksource watchdog test safe for slow-HZ systems	2021-08-28 17:01:32 +02:00
Kconfig	clocksource: Make the int help prompt unit readable in ncurses	2024-04-30 00:12:22 +02:00
Makefile	timers: Implement the hierarchical pull model	2024-02-22 17:52:32 +01:00
namespace.c	vdso/timens: Refactor copy-pasted find_timens_vvar_page() helper into one copy	2022-12-01 11:35:40 +01:00
ntp_internal.h
ntp.c	timekeeping, clocksource: Fix various typos in comments	2021-03-22 23:06:48 +01:00
posix-clock.c	Fix memory leak in posix_clock_open()	2024-03-27 09:03:22 -07:00
posix-cpu-timers.c	posix-cpu-timers: Implement the missing timer_wait_running callback	2023-04-21 15:34:33 +02:00
posix-stubs.c	posix-timers: Get rid of [COMPAT_]SYS_NI() uses	2023-12-20 21:30:27 -08:00
posix-timers.c	posix-timers: Refer properly to CONFIG_HIGH_RES_TIMERS	2023-06-18 22:41:53 +02:00
posix-timers.h
sched_clock.c	time/sched_clock: Provide sched_clock_noinstr()	2023-06-05 21:11:04 +02:00
test_udelay.c	time/debug: Fix memory leak with using debugfs_lookup()	2023-02-09 20:12:27 +01:00
tick-broadcast-hrtimer.c	time/tick-broadcast: Remove RCU_NONIDLE() usage	2023-01-13 11:48:16 +01:00
tick-broadcast.c	tick/broadcast: Make broadcast device replacement work correctly	2023-05-08 23:18:16 +02:00
tick-common.c	tick/nohz_full: Don't abuse smp_call_function_single() in tick_setup_device()	2024-06-10 20:18:13 +02:00
tick-internal.h	tick: Move broadcast cancellation up to CPUHP_AP_TICK_DYING	2024-02-26 11:37:32 +01:00
tick-legacy.c
tick-oneshot.c	time: Fix various kernel-doc problems	2023-01-03 11:07:58 +01:00
tick-sched.c	timekeeping: Use READ/WRITE_ONCE() for tick_do_timer_cpu	2024-04-10 10:13:42 +02:00
tick-sched.h	tick/sched: Fix struct tick_sched doc warnings	2024-04-01 10:36:35 +02:00
time_test.c	time: test: Fix incorrect format specifier	2024-02-27 15:26:08 -07:00
time.c	time: add kernel-doc in time.c	2023-07-14 13:47:07 -06:00
timeconst.bc
timeconv.c	time: Improve performance of time64_to_tm()	2021-06-24 11:51:59 +02:00
timecounter.c	time/timecounter: Mark 1st argument of timecounter_cyc2time() as const	2021-04-16 21:03:50 +02:00
timekeeping_debug.c
timekeeping_internal.h
timekeeping.c	timekeeping: Let timekeeping_cycles_to_ns() handle both under and overflow	2024-04-08 15:03:08 +02:00
timekeeping.h
timer_list.c	tick: Split nohz and highres features from nohz_mode	2024-02-26 11:37:32 +01:00
timer_migration.c	timers/migration: Prevent out of bounds access on failure	2024-05-08 11:19:43 +02:00
timer_migration.h	timers: Implement the hierarchical pull model	2024-02-22 17:52:32 +01:00
timer.c	sysctl changes for v6.10-rc1	2024-05-17 17:31:24 -07:00
vsyscall.c	vdso: Add vdso_data:: Max_cycles	2024-04-08 15:03:07 +02:00