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| author | john stultz <johnstul@us.ibm.com> | 2011-05-04 18:16:50 -0700 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2011-05-05 15:23:26 +0200 |
| commit | e05b2efb82596905ebfe88e8612ee81dec9b6592 (patch) | |
| tree | 9b688eb473943588adf667729c0ffa3b9f032cac /kernel/Kconfig.hz | |
| parent | 5895198c56d131cc696556a45f7ff0ea99ac297b (diff) | |
| download | op-kernel-dev-e05b2efb82596905ebfe88e8612ee81dec9b6592.zip op-kernel-dev-e05b2efb82596905ebfe88e8612ee81dec9b6592.tar.gz | |
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>
Diffstat (limited to 'kernel/Kconfig.hz')
0 files changed, 0 insertions, 0 deletions
