From e79bee24fd6134f90af4228cfebd010136d67631 Mon Sep 17 00:00:00 2001
From: Shaohua Li <shli@kernel.org>
Date: Mon, 8 Oct 2012 16:32:18 -0700
Subject: atomic: implement generic atomic_dec_if_positive()

The x86 implementation of atomic_dec_if_positive is quite generic, so make
it available to all architectures.

This is needed for "swap: add a simple detector for inappropriate swapin
readahead".

[akpm@linux-foundation.org: do the "#define foo foo" trick in the conventional manner]
Signed-off-by: Shaohua Li <shli@fusionio.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Rik van Riel <riel@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Michal Simek <monstr@monstr.eu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 arch/microblaze/include/asm/atomic.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/atomic.h b/arch/microblaze/include/asm/atomic.h
index 472d8bf726d..42ac382a09d 100644
--- a/arch/microblaze/include/asm/atomic.h
+++ b/arch/microblaze/include/asm/atomic.h
@@ -22,5 +22,6 @@ static inline int atomic_dec_if_positive(atomic_t *v)
 
 	return res;
 }
+#define atomic_dec_if_positive atomic_dec_if_positive
 
 #endif /* _ASM_MICROBLAZE_ATOMIC_H */
-- 
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