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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2017-06-27 19:15:38 +0300
committerThomas Gleixner <tglx@linutronix.de>2017-06-29 01:27:24 +0300
commit2287d8664fe7345ead891017eccd879fc605305e (patch)
tree7f187529f1d1dacf4b41225551bbf158bb70414d /drivers/char
parentf5b816786f7687a2ec0f485a1138b009d2020352 (diff)
downloadlinux-2287d8664fe7345ead891017eccd879fc605305e.tar.xz
timers: Make the cpu base lock raw
The timers cpu base lock could not be converted to a raw spinlock becaue the lock held time was non-deterministic due to cascading and long lasting timer wheel traversals. The rework of the timer wheel to the new non-cascading model removed also the wheel traversals and the lock held times are deterministic now. This allows to make the lock raw and thereby unbreaks NOHz* on preempt-RT. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: http://lkml.kernel.org/r/20170627161538.30257-1-bigeasy@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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