Commit b1ada601 authored Feb 29, 2012 by Anton Blanchard Committed by Benjamin Herrenschmidt Mar 07, 2012

atomic: Allow atomic_inc_not_zero to be overridden



We want to implement a ppc64 specific version of atomic_inc_not_zero
so wrap it in an ifdef to allow it to be overridden.

Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

parent 6c15d7af

include/linux/atomic.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -24,7 +24,9 @@ static inline int atomic_add_unless(atomic_t *v, int a, int u)
		* Atomically increments @v by 1, so long as @v is non-zero.
		* Returns non-zero if @v was non-zero, and zero otherwise.
		*/
		#ifndef atomic_inc_not_zero
		#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
		#endif

		/**
		* atomic_inc_not_zero_hint - increment if not null