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| author | Thomas Gleixner <tglx@linutronix.de> | 2011-12-01 00:04:00 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2012-03-01 10:28:04 +0100 |
| commit | 63b2001169e75cd71e917ec953fdab572e3f944a (patch) | |
| tree | 3338725751540571a7d490b252f1b450554a6847 /include/linux/tty_ldisc.h | |
| parent | ba74c1448f127649046615ec017bded7b2a76f29 (diff) | |
| download | lwn-63b2001169e75cd71e917ec953fdab572e3f944a.tar.gz lwn-63b2001169e75cd71e917ec953fdab572e3f944a.zip | |
sched/wait: Add __wake_up_all_locked() API
For code which protects the waitqueue itself with another lock it
makes no sense to acquire the waitqueue lock for wakeup all. Provide
__wake_up_all_locked().
This is an optimization on the vanilla kernel (to be used by the
PCI code) and an important semantic distinction on -rt.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-ux6m4b8jonb9inx8xafh77ds@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/tty_ldisc.h')
0 files changed, 0 insertions, 0 deletions