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authorLinus Torvalds <torvalds@linux-foundation.org>2020-12-27 20:03:41 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-12-27 20:03:41 +0300
commit2eeefc60ad70ffb7a5daf9f47aef5b1ebd1f39ad (patch)
tree0ebab4a8e90013c61459efb074e80dddc924b571 /kernel/time/tick-sched.c
parent3b80dee70eaa5f9a120db058c30cc8e63c443571 (diff)
parentf6f5cd840ae782680c5e94048c72420e4e6857f9 (diff)
downloadlinux-2eeefc60ad70ffb7a5daf9f47aef5b1ebd1f39ad.tar.xz
Merge tag 'timers-urgent-2020-12-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Ingo Molnar: "Update/fix two CPU sanity checks in the hotplug and the boot code, and fix a typo in the Kconfig help text. [ Context: the first two commits are the result of an ongoing annotation+review work of (intentional) tick_do_timer_cpu() data races reported by KCSAN, but the annotations aren't fully cooked yet ]" * tag 'timers-urgent-2020-12-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: timekeeping: Fix spelling mistake in Kconfig "fullfill" -> "fulfill" tick/sched: Remove bogus boot "safety" check tick: Remove pointless cpu valid check in hotplug code
Diffstat (limited to 'kernel/time/tick-sched.c')
-rw-r--r--kernel/time/tick-sched.c7
1 files changed, 0 insertions, 7 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 030282994b3e..e10a4af88737 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -989,13 +989,6 @@ static bool can_stop_idle_tick(int cpu, struct tick_sched *ts)
*/
if (tick_do_timer_cpu == cpu)
return false;
- /*
- * Boot safety: make sure the timekeeping duty has been
- * assigned before entering dyntick-idle mode,
- * tick_do_timer_cpu is TICK_DO_TIMER_BOOT
- */
- if (unlikely(tick_do_timer_cpu == TICK_DO_TIMER_BOOT))
- return false;
/* Should not happen for nohz-full */
if (WARN_ON_ONCE(tick_do_timer_cpu == TICK_DO_TIMER_NONE))