Thomas Gleixner f3d155634f clockevents: Prevent oneshot mode when broadcast device is periodic ...

commit 3a142a0672 upstream.

When the per cpu timer is marked CLOCK_EVT_FEAT_C3STOP, then we only
can switch into oneshot mode, when the backup broadcast device
supports oneshot mode as well. Otherwise we would try to switch the
broadcast device into an unsupported mode unconditionally. This went
unnoticed so far as the current available broadcast devices support
oneshot mode. Seth unearthed this problem while debugging and working
around an hpet related BIOS wreckage.

Add the necessary check to tick_is_oneshot_available().

Reported-and-tested-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
LKML-Reference: <alpine.LFD.2.00.1102252231200.2701@localhost6.localdomain6>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2011-03-07 15:17:54 -08:00

..

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

clockevents: Prevent oneshot mode when broadcast device is periodic

2011-03-07 15:17:54 -08:00

tick-common.c

clockevents: Prevent oneshot mode when broadcast device is periodic

2011-03-07 15:17:54 -08:00

tick-internal.h

clockevents: Prevent oneshot mode when broadcast device is periodic

2011-03-07 15:17:54 -08:00

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