Sebastien Dugue 94df7de028 hrtimers: allow the hot-unplugging of all cpus ... Impact: fix CPU hotplug hang on Power6 testbox On architectures that support offlining all cpus (at least powerpc/pseries), hot-unpluging the tick_do_timer_cpu can result in a system hang. This comes from the fact that if the cpu going down happens to be the cpu doing the tick, then as the tick_do_timer_cpu handover happens after the cpu is dead (via the CPU_DEAD notification), we're left without ticks, jiffies are frozen and any task relying on timers (msleep, ...) is stuck. That's particularly the case for the cpu looping in __cpu_die() waiting for the dying cpu to be dead. This patch addresses this by having the tick_do_timer_cpu handover happen earlier during the CPU_DYING notification. For this, a new clockevent notification type is introduced (CLOCK_EVT_NOTIFY_CPU_DYING) which is triggered in hrtimer_cpu_notify(). Signed-off-by: Sebastien Dugue <sebastien.dugue@bull.net> Cc: <stable@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>		2009-01-30 22:35:29 +01:00
..
clockevents.c
clocksource.c
jiffies.c	trivial: fix then -> than typos in comments and documentation	2009-01-06 11:28:06 +01:00
Kconfig
Makefile
ntp.c
tick-broadcast.c
tick-common.c	hrtimers: allow the hot-unplugging of all cpus	2009-01-30 22:35:29 +01:00
tick-internal.h
tick-oneshot.c
tick-sched.c	time-sched.c: tick_nohz_update_jiffies should be static	2009-01-15 12:06:56 +01:00
timekeeping.c
timer_list.c
timer_stats.c