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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2017-06-27 18:15:38 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-06-29 00:27:24 +0200 |
| commit | 2287d8664fe7345ead891017eccd879fc605305e (patch) | |
| tree | 7f187529f1d1dacf4b41225551bbf158bb70414d /arch | |
| parent | f5b816786f7687a2ec0f485a1138b009d2020352 (diff) | |
| download | blackbird-op-linux-2287d8664fe7345ead891017eccd879fc605305e.tar.gz blackbird-op-linux-2287d8664fe7345ead891017eccd879fc605305e.zip | |
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>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions
