diff options
| author | Jan Beulich <jbeulich@novell.com> | 2008-09-05 13:26:39 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-09-05 17:04:08 +0200 |
| commit | ef1f3413284b9270266cb04a944647e59735f0f1 (patch) | |
| tree | 0e3cb2780ec0cf79969fcd937d6938abe72a2447 /include/asm-x86/spinlock.h | |
| parent | 0a328ea43da9c3eefce7cb6c947e43e1a0fef810 (diff) | |
x86: ticket spin locks: fix asm constraints
In addition to these changes I doubt the 'volatile' on all the ticket
lock asm()-s are really necessary.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/spinlock.h')
| -rw-r--r-- | include/asm-x86/spinlock.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/asm-x86/spinlock.h b/include/asm-x86/spinlock.h index 93adae338ac..acd9bdda55c 100644 --- a/include/asm-x86/spinlock.h +++ b/include/asm-x86/spinlock.h @@ -101,7 +101,7 @@ static __always_inline int __ticket_spin_trylock(raw_spinlock_t *lock) "1:" "sete %b1\n\t" "movzbl %b1,%0\n\t" - : "=&a" (tmp), "=Q" (new), "+m" (lock->slock) + : "=&a" (tmp), "=&Q" (new), "+m" (lock->slock) : : "memory", "cc"); @@ -146,7 +146,7 @@ static __always_inline void __ticket_spin_lock(raw_spinlock_t *lock) /* don't need lfence here, because loads are in-order */ "jmp 1b\n" "2:" - : "+Q" (inc), "+m" (lock->slock), "=r" (tmp) + : "+r" (inc), "+m" (lock->slock), "=&r" (tmp) : : "memory", "cc"); } @@ -166,7 +166,7 @@ static __always_inline int __ticket_spin_trylock(raw_spinlock_t *lock) "1:" "sete %b1\n\t" "movzbl %b1,%0\n\t" - : "=&a" (tmp), "=r" (new), "+m" (lock->slock) + : "=&a" (tmp), "=&q" (new), "+m" (lock->slock) : : "memory", "cc"); |