Lin Ming 8aa3149405 timekeeping: Fix clock_gettime vsyscall time warp ...

commit 0696b711e4be45fa104c12329f617beb29c03f78 upstream.

Since commit 0a544198 "timekeeping: Move NTP adjusted clock multiplier
to struct timekeeper" the clock multiplier of vsyscall is updated with
the unmodified clock multiplier of the clock source and not with the
NTP adjusted multiplier of the timekeeper.

This causes user space observerable time warps:
new CLOCK-warp maximum: 120 nsecs,  00000025c337c537 -> 00000025c337c4bf

Add a new argument "mult" to update_vsyscall() and hand in the
timekeeping internal NTP adjusted multiplier.

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Cc: "Zhang Yanmin" <yanmin_zhang@linux.intel.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Tony Luck <tony.luck@intel.com>
LKML-Reference: <1258436990.17765.83.camel@minggr.sh.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Kurt Garloff <garloff@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2010-08-13 13:20:13 -07:00

..

clockevents.c

clockevents: Add missing include to pacify sparse

2010-01-28 15:00:24 -08:00

clocksource.c

timekeeping: Prevent oops when GENERIC_TIME=n

2010-04-01 15:58:06 -07:00

jiffies.c

clocksource: Cleanup clocksource selection

2009-08-15 10:55:46 +02:00

Kconfig

Kconfig: eliminate "def_bool n" constructs

2008-10-16 11:21:31 -07:00

Makefile

time: add function to convert between calendar time and broken-down time for universal use

2009-09-24 07:20:56 -07:00

ntp.c

timekeeping: Introduce timekeeping_leap_insert

2009-08-15 10:55:45 +02:00

tick-broadcast.c

clockevent: Prevent dead lock on clockevents_lock

2009-08-19 18:15:10 +02:00

tick-common.c

clockevents: prevent endless loop in tick_handle_periodic()

2009-05-02 10:22:27 +02:00

tick-internal.h

NOHZ: restart tick device from irq_enter()

2008-10-17 18:13:38 +02:00

tick-oneshot.c

clocksource: prevent selection of low resolution clocksourse also for nohz=on

2009-06-13 12:00:26 +02:00

tick-sched.c

nohz: Reuse ktime in sub-functions of tick_check_idle.

2010-08-13 13:20:13 -07:00

timecompare.c

timecompare: generic infrastructure to map between two time bases

2009-02-15 22:43:32 -08:00

timeconv.c

time: add function to convert between calendar time and broken-down time for universal use

2009-09-24 07:20:56 -07:00

timekeeping.c

timekeeping: Fix clock_gettime vsyscall time warp

2010-08-13 13:20:13 -07:00

timer_list.c

hrtimer: Tune hrtimer_interrupt hang logic

2010-04-01 15:58:14 -07:00

timer_stats.c

const: constify remaining file_operations

2009-10-01 16:11:11 -07:00