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| author |   Davidlohr Bueso <dave@stgolabs> | 2016-03-09 17:55:36 -0800 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2016-03-10 10:28:35 +0100 |
| commit | 38460a2178d225b39ade5ac66586c3733391cf86 (patch) | |
| tree | 189a70cb0386f09af432c2580b03c404bc6e24b3 /arch | |
| parent | locking/csd_lock: Explicitly inline csd_lock*() helpers (diff) | |
| download | linux-dev-38460a2178d225b39ade5ac66586c3733391cf86.tar.xz linux-dev-38460a2178d225b39ade5ac66586c3733391cf86.zip | |
locking/csd_lock: Use smp_cond_acquire() in csd_lock_wait()
We can micro-optimize this call and mildly relax the
barrier requirements by relying on ctrl + rmb, keeping
the acquire semantics. In addition, this is pretty much
the now standard for busy-waiting under such restraints.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dave@stgolabs.net
Link: http://lkml.kernel.org/r/1457574936-19065-3-git-send-email-dbueso@suse.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions