From: Anton Blanchard <anton@samba.org>
To: benh@kernel.crashing.org, paulus@samba.org,
akpm@linux-foundation.org, asharma@fb.com, vapier@gentoo.org,
eric.dumazet@gmail.com, linuxppc-dev@lists.ozlabs.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 1/2] atomic: Allow atomic_inc_not_zero to be overridden
Date: Thu, 1 Mar 2012 18:09:53 +1100 [thread overview]
Message-ID: <20120301180953.0f61576f@kryten> (raw)
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>
---
Index: linux-build/include/linux/atomic.h
===================================================================
--- linux-build.orig/include/linux/atomic.h 2012-02-11 14:59:23.284714257 +1100
+++ linux-build/include/linux/atomic.h 2012-02-11 15:01:14.894764555 +1100
@@ -24,7 +24,9 @@ static inline int atomic_add_unless(atom
* 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
next reply other threads:[~2012-03-01 7:09 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-01 7:09 Anton Blanchard [this message]
2012-03-01 7:12 ` [PATCH 2/2] powerpc: atomic: Implement atomic*_inc_not_zero Anton Blanchard
2012-03-01 17:19 ` [PATCH 1/2] atomic: Allow atomic_inc_not_zero to be overridden Mike Frysinger
2012-03-01 23:02 ` Andrew Morton
2012-03-01 23:48 ` Richard Kuo
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