linux/arch/x86/include/asm/qrwlock.h
Will Deacon 2b2a85a4d3 locking/qrwlock: Implement queue_write_unlock() using smp_store_release()
Since the following commit:

  536fa40222 ("compiler: Allow 1- and 2-byte smp_load_acquire() and smp_store_release()")

smp_store_release() supports byte accesses, so use that in writer unlock
and remove the conditional macro override.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Waiman Long <Waiman.Long@hp.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: paulmck@linux.vnet.ibm.com
Link: http://lkml.kernel.org/r/1438880084-18856-6-git-send-email-will.deacon@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-08-12 11:59:05 +02:00

8 lines
160 B
C

#ifndef _ASM_X86_QRWLOCK_H
#define _ASM_X86_QRWLOCK_H
#include <asm-generic/qrwlock_types.h>
#include <asm-generic/qrwlock.h>
#endif /* _ASM_X86_QRWLOCK_H */