linux

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john stultz e05b2efb82 clocksource: Install completely before selecting

Christian Hoffmann reported that the command line clocksource override
with acpi_pm timer fails:

 Kernel command line: <SNIP> clocksource=acpi_pm
 hpet clockevent registered
 Switching to clocksource hpet
 Override clocksource acpi_pm is not HRT compatible.
 Cannot switch while in HRT/NOHZ mode.

The watchdog code is what enables CLOCK_SOURCE_VALID_FOR_HRES, but we
actually end up selecting the clocksource before we enqueue it into
the watchdog list, so that's why we see the warning and fail to switch
to acpi_pm timer as requested. That's particularly bad when we want to
debug timekeeping related problems in early boot.

Put the selection call last.

Reported-by: Christian Hoffmann <email@christianhoffmann.info>
Signed-off-by: John Stultz <johnstul@us.ibm.com>
Cc: stable@kernel.org # 32...
Link: http://lkml.kernel.org/r/%3C1304558210.2943.24.camel%40work-vm%3E
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2011-05-05 15:23:26 +02:00

clockevents.c

time: Make do_timer() and xtime_lock local to kernel/time/

2011-01-31 19:26:50 +01:00

clocksource.c

clocksource: Install completely before selecting

2011-05-05 15:23:26 +02:00

jiffies.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

Kconfig

time: Kill off CONFIG_GENERIC_TIME