clocksource: Avoid clocksource watchdog circular locking dependency

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stop_machine from a multithreaded workqueue is not allowed because
of a circular locking dependency between cpu_down and the workqueue
execution. Use a kernel thread to do the clocksource downgrade.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: john stultz <johnstul@us.ibm.com>
LKML-Reference: <20090818170942.3ab80c91@skybase>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

...

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Martin Schwidefsky 2009-08-18 17:09:42 +02:00 • committed by Thomas Gleixner

parent d0981a1b21

commit 01548f4d3e

1 changed files with 16 additions and 3 deletions

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kernel/time/clocksource.c

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