erofs-linux/include/asm-generic/mcs_spinlock.h at ce80098db2439ee44403ec6fccd3a10be21c7aff - erofs-linux - Gitea: Git with a cup of tea

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Tim Chen ddf1d169c0 locking/mcs: Allow architecture specific asm files to be used for contended case

This patch allows each architecture to add its specific assembly optimized
arch_mcs_spin_lock_contended and arch_mcs_spinlock_uncontended for
MCS lock and unlock functions.

Signed-off-by: Tim Chen <[email protected]>
Cc: Scott J Norton <[email protected]>
Cc: Raghavendra K T <[email protected]>
Cc: AswinChandramouleeswaran <[email protected]>
Cc: George Spelvin <[email protected]>
Cc: Rik vanRiel <[email protected]>
Cc: Andrea Arcangeli <[email protected]>
Cc: MichelLespinasse <[email protected]>
Cc: Peter Hurley <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Alex Shi <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Tim Chen <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: "Figo.zhang" <[email protected]>
Cc: "Paul E.McKenney" <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Davidlohr Bueso <[email protected]>
Cc: Waiman Long <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Matthew R Wilcox <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/1390347382.3138.67.camel@schen9-DESK
Signed-off-by: Ingo Molnar <[email protected]>

2014-02-09 21:18:52 +01:00

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 #ifndef __ASM_MCS_SPINLOCK_H
 #define __ASM_MCS_SPINLOCK_H
 /*
  * Architectures can define their own:
  *
  *   arch_mcs_spin_lock_contended(l)
  *   arch_mcs_spin_unlock_contended(l)
  *
  * See kernel/locking/mcs_spinlock.c.
  */
 #endif /* __ASM_MCS_SPINLOCK_H */