diff options
| author | john stultz <[email protected]> | 2011-05-04 18:16:50 -0700 |
|---|---|---|
| committer | Thomas Gleixner <[email protected]> | 2011-05-05 15:23:26 +0200 |
| commit | e05b2efb82596905ebfe88e8612ee81dec9b6592 (patch) | |
| tree | 9b688eb473943588adf667729c0ffa3b9f032cac /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | 5895198c56d131cc696556a45f7ff0ea99ac297b (diff) | |
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 protected]>
Signed-off-by: John Stultz <[email protected]>
Cc: [email protected] # 32...
Link: http://lkml.kernel.org/r/%3C1304558210.2943.24.camel%40work-vm%3E
Signed-off-by: Thomas Gleixner <[email protected]>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions