Frederic Weisbecker dad6a09f31 hrtimer: Report offline hrtimer enqueue ... The hrtimers migration on CPU-down hotplug process has been moved earlier, before the CPU actually goes to die. This leaves a small window of opportunity to queue an hrtimer in a blind spot, leaving it ignored. For example a practical case has been reported with RCU waking up a SCHED_FIFO task right before the CPUHP_AP_IDLE_DEAD stage, queuing that way a sched/rt timer to the local offline CPU. Make sure such situations never go unnoticed and warn when that happens. Fixes: 5c0930ccaa ("hrtimers: Push pending hrtimers away from outgoing CPU earlier") Reported-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20240129235646.3171983-4-boqun.feng@gmail.com		2024-02-06 10:56:35 +01:00
..
alarmtimer.c	alarmtimer: Use maximum alarm time for suspend	2023-10-09 15:03:28 +02:00
clockevents.c	clockevents: Repair kernel-doc for clockevent_delta2ns()	2022-12-01 13:35:41 +01:00
clocksource-wdtest.c	clocksource: Make clocksource watchdog test safe for slow-HZ systems	2021-08-28 17:01:32 +02:00
clocksource.c	clocksource: Skip watchdog check for large watchdog intervals	2024-01-25 09:13:16 +01:00
hrtimer.c	hrtimer: Report offline hrtimer enqueue	2024-02-06 10:56:35 +01:00
itimer.c	time: Prevent undefined behaviour in timespec64_to_ns()	2020-10-26 11:48:11 +01:00
jiffies.c	clocksource: Make clocksource watchdog test safe for slow-HZ systems	2021-08-28 17:01:32 +02:00
Kconfig	clocksource: Loosen clocksource watchdog constraints	2023-01-03 20:43:45 -08:00
Makefile	time: Improve performance of time64_to_tm()	2021-06-24 11:51:59 +02:00
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: Make the RTC synchronization more reliable	2020-12-11 10:40:52 +01:00
ntp.c	timekeeping, clocksource: Fix various typos in comments	2021-03-22 23:06:48 +01:00
posix-clock.c	posix-clock: introduce posix_clock_context concept	2023-10-15 20:07:52 +01:00
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	posix-clocks: Introduce clock_get_ktime() callback	2020-01-14 12:20:51 +01:00
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/common: Align tick period during sched_timer setup	2023-06-16 20:45:28 +02:00
tick-internal.h	time: Make sysfs_get_uname() function visible in header	2023-11-22 14:12:10 +01:00
tick-legacy.c	timekeeping: remove xtime_update	2020-10-30 21:57:07 +01:00
tick-oneshot.c	time: Fix various kernel-doc problems	2023-01-03 11:07:58 +01:00
tick-sched.c	tick/sched: Preserve number of idle sleeps across CPU hotplug events	2024-01-25 09:52:40 +01:00
tick-sched.h	timers/nohz: Protect idle/iowait sleep time under seqcount	2023-04-18 16:35:12 +02:00
time_test.c	kunit: time: Mark test as slow using test attributes	2023-07-26 13:29:35 -06:00
time.c	time: add kernel-doc in time.c	2023-07-14 13:47:07 -06:00
timeconst.bc	time: Add SPDX license identifiers	2018-11-23 11:51:20 +01:00
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/debug: No need to check return value of debugfs_create functions	2019-01-29 20:08:41 +01:00
timekeeping_internal.h	timekeeping/vsyscall: Provide vdso_update_begin/end()	2020-08-06 10:57:30 +02:00
timekeeping.c	seqlock/latch: Provide raw_read_seqcount_latch_retry()	2023-06-05 21:11:03 +02:00
timekeeping.h	asm-generic: cross-architecture timer cleanup	2020-12-16 00:07:17 -08:00
timer_list.c	timer_list: Print name of per-cpu wakeup device	2021-05-31 17:04:49 +02:00
timer.c	timers: Fix nextevt calculation when no timers are pending	2023-12-20 16:49:39 +01:00
vsyscall.c	timekeeping, clocksource: Fix various typos in comments	2021-03-22 23:06:48 +01:00