linux/arch/arm/include
Will Deacon 20e260b6f4 ARM: 7632/1: spinlock: avoid exclusive accesses on unlock() path
When unlocking a spinlock, all we need to do is increment the owner
field of the lock. Since only one CPU can be performing an unlock()
operation for a given lock, this doesn't need to be exclusive.

This patch simplifies arch_spin_unlock to use non-exclusive accesses
when updating the owner field of the lock.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-01-28 14:13:05 +00:00
..
asm ARM: 7632/1: spinlock: avoid exclusive accesses on unlock() path 2013-01-28 14:13:05 +00:00
debug ARM: arm-soc: multiplatform conversion patches 2012-12-13 10:57:16 -08:00
uapi/asm Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal 2012-12-20 18:05:28 -08:00