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[PATCH] s390: spinlock fixes

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Remove useless spin_retry_counter and fix compilation for UP kernels.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Martin Schwidefsky
2006-01-14 13:21:00 -08:00
committed by Linus Torvalds
parent 68c1191778
commit 0152fb3760
3 changed files with 3 additions and 9 deletions
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7
arch/s390/lib/spinlock.c
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@@ -13,7 +13,6 @@
#include <linux/init.h>
#include <asm/io.h>
atomic_t spin_retry_counter;
int spin_retry = 1000;
/**
@@ -45,7 +44,6 @@ _raw_spin_lock_wait(raw_spinlock_t *lp, unsigned int pc)
_diag44();
count = spin_retry;
}
atomic_inc(&spin_retry_counter);
if (_raw_compare_and_swap(&lp->lock, 0, pc) == 0)
return;
}
@@ -58,7 +56,6 @@ _raw_spin_trylock_retry(raw_spinlock_t *lp, unsigned int pc)
int count = spin_retry;
while (count-- > 0) {
atomic_inc(&spin_retry_counter);
if (_raw_compare_and_swap(&lp->lock, 0, pc) == 0)
return 1;
}
@@ -77,7 +74,6 @@ _raw_read_lock_wait(raw_rwlock_t *rw)
_diag44();
count = spin_retry;
}
atomic_inc(&spin_retry_counter);
old = rw->lock & 0x7fffffffU;
if (_raw_compare_and_swap(&rw->lock, old, old + 1) == old)
return;
@@ -92,7 +88,6 @@ _raw_read_trylock_retry(raw_rwlock_t *rw)
int count = spin_retry;
while (count-- > 0) {
atomic_inc(&spin_retry_counter);
old = rw->lock & 0x7fffffffU;
if (_raw_compare_and_swap(&rw->lock, old, old + 1) == old)
return 1;
@@ -111,7 +106,6 @@ _raw_write_lock_wait(raw_rwlock_t *rw)
_diag44();
count = spin_retry;
}
atomic_inc(&spin_retry_counter);
if (_raw_compare_and_swap(&rw->lock, 0, 0x80000000) == 0)
return;
}
@@ -124,7 +118,6 @@ _raw_write_trylock_retry(raw_rwlock_t *rw)
int count = spin_retry;
while (count-- > 0) {
atomic_inc(&spin_retry_counter);
if (_raw_compare_and_swap(&rw->lock, 0, 0x80000000) == 0)
return 1;
}