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Message-Id: <1267183361-20775-1-git-send-email-luca@luca-barbieri.com>
Date:	Fri, 26 Feb 2010 12:22:40 +0100
From:	Luca Barbieri <luca@...a-barbieri.com>
To:	mingo@...e.hu
Cc:	hpa@...or.com, a.p.zijlstra@...llo.nl,
	linux-kernel@...r.kernel.org,
	Luca Barbieri <luca@...a-barbieri.com>
Subject: [PATCH 1/2] lib: only test atomic64_dec_if_positive on archs having it

Only supported by ppc, mips and x86-32 with my patchset.

Signed-off-by: Luca Barbieri <luca@...a-barbieri.com>
---
 lib/atomic64_test.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/lib/atomic64_test.c b/lib/atomic64_test.c
index 4ff649e..0effcac 100644
--- a/lib/atomic64_test.c
+++ b/lib/atomic64_test.c
@@ -112,6 +112,7 @@ static __init int test_atomic64(void)
 	r += one;
 	BUG_ON(v.counter != r);
 
+#if defined(CONFIG_X86_32) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(_ASM_GENERIC_ATOMIC64_H)
 	INIT(onestwos);
 	BUG_ON(atomic64_dec_if_positive(&v) != (onestwos - 1));
 	r -= one;
@@ -124,6 +125,9 @@ static __init int test_atomic64(void)
 	INIT(-one);
 	BUG_ON(atomic64_dec_if_positive(&v) != (-one - one));
 	BUG_ON(v.counter != r);
+#else
+#warning Please implement atomic64_dec_if_positive for your architecture, and add it to the IF above
+#endif
 
 	INIT(onestwos);
 	BUG_ON(atomic64_inc_not_zero(&v));
-- 
1.6.6.1.476.g01ddb

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