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| author | Kyle McMartin <kyle@redhat.com> | 2009-02-08 17:39:58 -0500 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-02-09 08:15:39 -0800 |
| commit | a5ef7ca0e2636bad0ccd07b996d775348ae2b65e (patch) | |
| tree | fcc1ef7e4bd95ce58d5bbb74ad129bdc248252ca /arch/x86/include/asm/spinlock.h | |
| parent | d5b562330ec766292a3ac54ae5e0673610bd5b3d (diff) | |
| download | linux-a5ef7ca0e2636bad0ccd07b996d775348ae2b65e.tar.gz linux-a5ef7ca0e2636bad0ccd07b996d775348ae2b65e.tar.bz2 linux-a5ef7ca0e2636bad0ccd07b996d775348ae2b65e.zip | |
x86: spinlocks: define dummy __raw_spin_is_contended
Architectures other than mips and x86 are not using ticket spinlocks.
Therefore, the contention on the lock is meaningless, since there is
nobody known to be waiting on it (arguably /fairly/ unfair locks).
Dummy it out to return 0 on other architectures.
Signed-off-by: Kyle McMartin <kyle@redhat.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86/include/asm/spinlock.h')
| -rw-r--r-- | arch/x86/include/asm/spinlock.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/spinlock.h b/arch/x86/include/asm/spinlock.h index d17c91981da2..8247e94ac6b1 100644 --- a/arch/x86/include/asm/spinlock.h +++ b/arch/x86/include/asm/spinlock.h @@ -245,6 +245,7 @@ static inline int __raw_spin_is_contended(raw_spinlock_t *lock) { return __ticket_spin_is_contended(lock); } +#define __raw_spin_is_contended __raw_spin_is_contended static __always_inline void __raw_spin_lock(raw_spinlock_t *lock) { |