John Stultz 27727df240 timekeeping: Avoid taking lock in NMI path with CONFIG_DEBUG_TIMEKEEPING ... When I added some extra sanity checking in timekeeping_get_ns() under CONFIG_DEBUG_TIMEKEEPING, I missed that the NMI safe __ktime_get_fast_ns() method was using timekeeping_get_ns(). Thus the locking added to the debug checks broke the NMI-safety of __ktime_get_fast_ns(). This patch open-codes the timekeeping_get_ns() logic for __ktime_get_fast_ns(), so can avoid any deadlocks in NMI. Fixes: 4ca22c2648 "timekeeping: Add warnings when overflows or underflows are observed" Reported-by: Steven Rostedt <rostedt@goodmis.org> Reported-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: John Stultz <john.stultz@linaro.org> Cc: stable <stable@vger.kernel.org> Link: http://lkml.kernel.org/r/1471993702-29148-2-git-send-email-john.stultz@linaro.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>		2016-08-24 09:34:31 +02:00
..
alarmtimer.c	alarmtimer: Fix comments describing structure fields	2016-06-20 12:47:09 -07:00
clockevents.c	clockevents: Make clockevents_subsys static	2016-07-19 10:48:06 +02:00
clocksource.c	clocksource: Make clocksource insert entry more efficient	2016-06-20 12:46:34 -07:00
hrtimer.c	hrtimer: Convert to hotplug state machine	2016-07-15 10:41:37 +02:00
itimer.c	itimers: Handle relative timers with CONFIG_TIME_LOW_RES proper	2016-01-17 11:13:55 +01:00
jiffies.c	jiffies: Use CLOCKSOURCE_MASK instead of constant	2016-02-27 08:55:31 +01:00
Kconfig	rcu: Drop RCU_USER_QS in favor of NO_HZ_FULL	2015-07-06 13:52:18 -07:00
Makefile	time: Remove development rules from Kbuild/Makefile	2015-07-01 09:57:35 +02:00
ntp_internal.h	ntp: Fix second_overflow's input parameter type to be 64bits	2015-12-16 16:50:56 -08:00
ntp.c	ntp: Fix ADJ_SETOFFSET being used w/ ADJ_NANO	2016-01-22 12:01:42 +01:00
posix-clock.c	posix-clock: Fix return code on the poll method's error path	2015-12-29 11:33:06 +01:00
posix-cpu-timers.c	posix_cpu_timer: Exit early when process has been reaped	2016-07-11 17:20:12 +02:00
posix-timers.c	posix-timers: Handle relative timers with CONFIG_TIME_LOW_RES proper	2016-01-17 11:13:55 +01:00
sched_clock.c	timers, sched/clock: Clean up the code a bit	2015-03-27 08:34:01 +01:00
test_udelay.c	time: Avoid timespec in udelay_test	2016-06-20 12:47:26 -07:00
tick-broadcast-hrtimer.c	tick/broadcast-hrtimer: Set name of the ce_broadcast_hrtimer	2016-07-05 17:02:19 +02:00
tick-broadcast.c	tick: Move the export of tick_broadcast_oneshot_control to the proper place	2015-07-14 12:01:04 +02:00
tick-common.c	clockevents: Remove unused set_mode() callback	2015-09-14 11:00:55 +02:00
tick-internal.h	timers: Forward the wheel clock whenever possible	2016-07-07 10:35:11 +02:00
tick-oneshot.c	clockevents: Provide functions to set and get the state	2015-06-02 14:40:47 +02:00
tick-sched.c	tick/nohz: Optimize nohz idle enter	2016-07-19 13:48:24 +02:00
tick-sched.h	timers/nohz: Convert tick dependency mask to atomic_t	2016-03-29 11:52:11 +02:00
time.c	time: remove timespec_add_safe()	2016-05-19 19:12:14 -07:00
timeconst.bc	timeconst: Update path in comment	2015-10-26 10:06:06 +09:00
timeconv.c	time: Add time64_to_tm()	2016-06-20 12:47:15 -07:00
timecounter.c	timecounter: keep track of accumulated fractional nanoseconds	2014-12-30 18:29:27 -05:00
timekeeping_debug.c	timekeeping: Convert timekeeping core to use timespec64s	2014-07-23 10:17:54 -07:00
timekeeping_internal.h	clocksource: Make clocksource validation work for all clocksources	2015-12-19 15:59:57 +01:00
timekeeping.c	timekeeping: Avoid taking lock in NMI path with CONFIG_DEBUG_TIMEKEEPING	2016-08-24 09:34:31 +02:00
timekeeping.h	hrtimer: Make offset update smarter	2015-04-22 17:06:49 +02:00
timer_list.c	hrtimer: Handle remaining time proper for TIME_LOW_RES	2016-01-17 11:13:55 +01:00
timer_stats.c	timer: Avoid using timespec	2016-06-20 12:47:33 -07:00
timer.c	timers: Fix get_next_timer_interrupt() computation	2016-08-09 09:31:55 +02:00