Thomas Gleixner
e3ff9c3678
timekeeping: Repair ktime_get_coarse*() granularity
...
Jason reported that the coarse ktime based time getters advance only once
per second and not once per tick as advertised.
The code reads only the monotonic base time, which advances once per
second. The nanoseconds are accumulated on every tick in xtime_nsec up to
a second and the regular time getters take this nanoseconds offset into
account, but the ktime_get_coarse*() implementation fails to do so.
Add the accumulated xtime_nsec value to the monotonic base time to get the
proper per tick advancing coarse tinme.
Fixes: b9ff604cff ("timekeeping: Add ktime_get_coarse_with_offset")
Reported-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Jason A. Donenfeld <Jason@zx2c4.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Clemens Ladisch <clemens@ladisch.de>
Cc: Sultan Alsawaf <sultan@kerneltoast.com>
Cc: Waiman Long <longman@redhat.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/alpine.DEB.2.21.1906132136280.1791@nanos.tec.linutronix.de
2019-06-14 11:51:44 +02:00
..
alarmtimer.c
alarmtimer: Return correct remaining time
2019-04-10 15:23:26 +02:00
clockevents.c
tick: Remove outgoing CPU from broadcast masks
2019-03-23 18:26:43 +01:00
clocksource.c
time: Remove license boilerplate
2018-11-23 11:51:21 +01:00
hrtimer.c
Merge branch 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-03-05 14:08:26 -08:00
itimer.c
time: Remove useless filenames in top level comments
2018-11-23 11:51:20 +01:00
jiffies.c
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-05-06 14:50:46 -07:00
Kconfig
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
Makefile
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ntp.c
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-05-16 11:00:20 -07:00
ntp_internal.h
ntp: Audit NTP parameters adjustment
2019-04-15 18:14:01 -04:00
posix-clock.c
timex: use __kernel_timex internally
2019-02-07 00:13:27 +01:00
posix-cpu-timers.c
posix-cpu-timers: Remove private interval storage
2019-01-15 16:36:13 +01:00
posix-stubs.c
y2038: syscalls: rename y2038 compat syscalls
2019-02-07 00:13:27 +01:00
posix-timers.c
y2038: syscalls: rename y2038 compat syscalls
2019-02-07 00:13:27 +01:00
posix-timers.h
timex: use __kernel_timex internally
2019-02-07 00:13:27 +01:00
sched_clock.c
Printk changes for 5.2
2019-05-07 09:18:12 -07:00
test_udelay.c
time/debug: Remove license boilerplate
2018-11-23 11:51:21 +01:00
tick-broadcast-hrtimer.c
time: Remove useless filenames in top level comments
2018-11-23 11:51:20 +01:00
tick-broadcast.c
tick: Fix typos in comments
2019-04-19 19:17:04 +02:00
tick-common.c
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-05-06 14:50:46 -07:00
tick-internal.h
tick: Remove outgoing CPU from broadcast masks
2019-03-23 18:26:43 +01:00
tick-oneshot.c
hrtimers/tick/clockevents: Remove sloppy license references
2018-11-23 11:51:21 +01:00
tick-sched.c
Power management updates for 5.2-rc1
2019-05-06 19:40:31 -07:00
tick-sched.h
tick/sched: Update tick_sched struct documentation
2019-03-24 20:29:32 +01:00
time.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2019-05-07 22:03:58 -07:00
timeconst.bc
time: Add SPDX license identifiers
2018-11-23 11:51:20 +01:00
timeconv.c
time: Add SPDX license identifiers
2018-11-23 11:51:20 +01:00
timecounter.c
time: Remove license boilerplate
2018-11-23 11:51:21 +01:00
timekeeping.c
timekeeping: Repair ktime_get_coarse*() granularity
2019-06-14 11:51:44 +02:00
timekeeping.h
timers/sched_clock: Prevent generic sched_clock wrap caused by tick_freeze()
2019-04-18 14:34:53 +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/ntp: Constify some function arguments
2018-07-19 17:08:05 -07:00
timer.c
Printk changes for 5.2
2019-05-07 09:18:12 -07:00
timer_list.c
hrtimers/tick/clockevents: Remove sloppy license references
2018-11-23 11:51:21 +01:00