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| author | Luca Barbieri <luca@luca-barbieri.com> | 2010-02-26 12:22:40 +0100 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2010-03-01 11:37:55 -0800 |
| commit | 8f4f202b335144bf5be5c9e5b1bc9477ecdae958 (patch) | |
| tree | a1bc2508079fe2312e87a8a29d8553f4985148d6 /lib/atomic64_test.c | |
| parent | a7e926abc3adfbd2e5e20d2b46177adb4e313915 (diff) | |
| download | lwn-8f4f202b335144bf5be5c9e5b1bc9477ecdae958.tar.gz lwn-8f4f202b335144bf5be5c9e5b1bc9477ecdae958.zip | |
lib: Only test atomic64_dec_if_positive on archs having it
Currently atomic64_dec_if_positive() is only supported by PowerPC,
MIPS and x86-32.
Signed-off-by: Luca Barbieri <luca@luca-barbieri.com>
LKML-Reference: <1267183361-20775-1-git-send-email-luca@luca-barbieri.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'lib/atomic64_test.c')
| -rw-r--r-- | 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 4ff649e46bad..0effcacbebda 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)); |