Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Peter Hilber be26970980 timekeeping: Fix cross-timestamp interpolation for non-x86 ... [ Upstream commit 14274d0bd31b4debf28284604589f596ad2e99f2 ] So far, get_device_system_crosststamp() unconditionally passes system_counterval.cycles to timekeeping_cycles_to_ns(). But when interpolating system time (do_interp == true), system_counterval.cycles is before tkr_mono.cycle_last, contrary to the timekeeping_cycles_to_ns() expectations. On x86, CONFIG_CLOCKSOURCE_VALIDATE_LAST_CYCLE will mitigate on interpolating, setting delta to 0. With delta == 0, xtstamp->sys_monoraw and xtstamp->sys_realtime are then set to the last update time, as implicitly expected by adjust_historical_crosststamp(). On other architectures, the resulting nonsense xtstamp->sys_monoraw and xtstamp->sys_realtime corrupt the xtstamp (ts) adjustment in adjust_historical_crosststamp(). Fix this by deriving xtstamp->sys_monoraw and xtstamp->sys_realtime from the last update time when interpolating, by using the local variable "cycles". The local variable already has the right value when interpolating, unlike system_counterval.cycles. Fixes: 2c756feb18 ("time: Add history to cross timestamp interface supporting slower devices") Signed-off-by: Peter Hilber <peter.hilber@opensynergy.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: John Stultz <jstultz@google.com> Link: https://lore.kernel.org/r/20231218073849.35294-4-peter.hilber@opensynergy.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-03-26 18:22:14 -04:00
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alarmtimer.c	alarmtimer: Prevent starvation by small intervals and SIG_IGN	2023-02-25 11:53:26 +01:00
clockevents.c
clocksource.c
hrtimer.c	hrtimer: Report offline hrtimer enqueue	2024-02-23 08:25:08 +01:00
itimer.c
jiffies.c	timekeeping: Split jiffies seqlock	2023-05-17 11:35:39 +02:00
Kconfig
Makefile
ntp.c
ntp_internal.h
posix-clock.c
posix-cpu-timers.c
posix-stubs.c	timers: Prevent union confusion from unexpected restart_syscall()	2023-03-11 16:43:54 +01:00
posix-timers.c	posix-timers: Ensure timer ID search-loop limit is valid	2023-07-27 08:37:42 +02:00
posix-timers.h
sched_clock.c
test_udelay.c
tick-broadcast-hrtimer.c
tick-broadcast.c	tick: Get rid of tick_period	2023-05-17 11:35:40 +02:00
tick-common.c	tick/common: Align tick period during sched_timer setup	2023-06-28 10:18:36 +02:00
tick-internal.h	tick: Get rid of tick_period	2023-05-17 11:35:40 +02:00
tick-oneshot.c
tick-sched.c	tick/sched: Preserve number of idle sleeps across CPU hotplug events	2024-02-23 08:24:53 +01:00
tick-sched.h
time.c
timeconst.bc
timeconv.c
timecounter.c
timekeeping.c	timekeeping: Fix cross-timestamp interpolation for non-x86	2024-03-26 18:22:14 -04:00
timekeeping.h	timekeeping: Split jiffies seqlock	2023-05-17 11:35:39 +02:00
timekeeping_debug.c
timekeeping_internal.h
timer.c
timer_list.c
vsyscall.c