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
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Kconfig	…
Makefile	…
alarmtimer.c	…
clockevents.c	…
clocksource-wdtest.c	…
clocksource.c	…
hrtimer.c	…
itimer.c	…
jiffies.c	…
namespace.c	…
ntp.c	…
ntp_internal.h	…
posix-clock.c	…
posix-cpu-timers.c	…
posix-stubs.c	…
posix-timers.c	…
posix-timers.h	…
sched_clock.c	…
test_udelay.c	…
tick-broadcast-hrtimer.c	…
tick-broadcast.c	…
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-legacy.c	…
tick-oneshot.c	…
tick-sched.c	…
tick-sched.h	…
time.c	…
time_test.c	…
timeconst.bc	…
timeconv.c	…
timecounter.c	…
timekeeping.c	…
timekeeping.h	…
timekeeping_debug.c	…
timekeeping_internal.h	…
timer.c	sysctl changes for v6.10-rc1	2024-05-17 17:31:24 -07:00
timer_list.c	…
timer_migration.c	…
timer_migration.h	…
vsyscall.c	…