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| author | Davidlohr Bueso <davidlohr@hp.com> | 2014-07-30 13:41:51 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-08-13 10:31:59 +0200 |
| commit | 42fa566bd74aa7b95413fb00611ec983b488222d (patch) | |
| tree | ed8785c7eb273aca842fc78972e7904a247ae28e /kernel/locking/mcs_spinlock.h | |
| parent | 242489cfe97d44290e7f88b12591fab6c0819045 (diff) | |
| download | linux-42fa566bd74aa7b95413fb00611ec983b488222d.tar.gz | |
locking/mutexes: Document quick lock release when unlocking
When unlocking, we always want to reach the slowpath with the lock's counter indicating it is unlocked. -- as returned by the asm fastpath call or by explicitly setting it. While doing so, at least in theory, we can optimize and allow faster lock stealing. When unlocking, we always want to reach the slowpath with the lock's counter indicating it is unlocked. -- as returned by the asm fastpath call or by explicitly setting it. While doing so, at least in theory, we can optimize and allow faster lock stealing. Signed-off-by: Davidlohr Bueso <davidlohr@hp.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: jason.low2@hp.com Cc: aswin@hp.com Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/1406752916-3341-2-git-send-email-davidlohr@hp.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/locking/mcs_spinlock.h')
0 files changed, 0 insertions, 0 deletions