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author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2006-09-28 18:56:43 +0400 |
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committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2006-09-28 18:56:43 +0400 |
commit | 94c12cc7d196bab34aaa98d38521549fa1e5ef76 (patch) | |
tree | 8e0cec0ed44445d74a2cb5160303d6b4dfb1bc31 /include/asm-s390/semaphore.h | |
parent | 25d83cbfaa44e1b9170c0941c3ef52ca39f54ccc (diff) | |
download | linux-94c12cc7d196bab34aaa98d38521549fa1e5ef76.tar.xz |
[S390] Inline assembly cleanup.
Major cleanup of all s390 inline assemblies. They now have a common
coding style. Quite a few have been shortened, mainly by using register
asm variables. Use of the EX_TABLE macro helps as well. The atomic ops,
bit ops and locking inlines new use the Q-constraint if a newer gcc
is used. That results in slightly better code.
Thanks to Christian Borntraeger for proof reading the changes.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'include/asm-s390/semaphore.h')
-rw-r--r-- | include/asm-s390/semaphore.h | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/include/asm-s390/semaphore.h b/include/asm-s390/semaphore.h index 32cdc69f39f4..dbce058aefa9 100644 --- a/include/asm-s390/semaphore.h +++ b/include/asm-s390/semaphore.h @@ -85,17 +85,17 @@ static inline int down_trylock(struct semaphore * sem) * sem->count.counter = --new_val; * In the ppc code this is called atomic_dec_if_positive. */ - __asm__ __volatile__ ( - " l %0,0(%3)\n" - "0: ltr %1,%0\n" - " jle 1f\n" - " ahi %1,-1\n" - " cs %0,%1,0(%3)\n" - " jl 0b\n" + asm volatile( + " l %0,0(%3)\n" + "0: ltr %1,%0\n" + " jle 1f\n" + " ahi %1,-1\n" + " cs %0,%1,0(%3)\n" + " jl 0b\n" "1:" : "=&d" (old_val), "=&d" (new_val), "=m" (sem->count.counter) : "a" (&sem->count.counter), "m" (sem->count.counter) - : "cc", "memory" ); + : "cc", "memory"); return old_val <= 0; } |