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authorHeiko Carstens <heiko.carstens@de.ibm.com>2008-01-26 14:11:03 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2008-01-26 14:11:14 +0100
commit3b4beb31759765efdda9f9431aebfedf828bbfe0 (patch)
tree9d8a7de6c484f8f2bbda874f41ebcad4af7c9d53 /arch/s390/lib
parent9f4b0ba81f158df459fa2cfc98ab1475c090f29c (diff)
downloadlinux-linaro-android-3b4beb31759765efdda9f9431aebfedf828bbfe0.tar.gz
[S390] Remove owner_pc member from raw_spinlock_t.
Used to contain the address of the holder of the lock. But since the spinlock code is not inlined anymore all locks contain the same address anyway. And since in addtition nobody complained about that for ages its obviously unused. So remove it. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/lib')
-rw-r--r--arch/s390/lib/spinlock.c12
1 files changed, 4 insertions, 8 deletions
diff --git a/arch/s390/lib/spinlock.c b/arch/s390/lib/spinlock.c
index 8d76403fcf8..59c56c3d72d 100644
--- a/arch/s390/lib/spinlock.c
+++ b/arch/s390/lib/spinlock.c
@@ -39,7 +39,7 @@ static inline void _raw_yield_cpu(int cpu)
_raw_yield();
}
-void _raw_spin_lock_wait(raw_spinlock_t *lp, unsigned int pc)
+void _raw_spin_lock_wait(raw_spinlock_t *lp)
{
int count = spin_retry;
unsigned int cpu = ~smp_processor_id();
@@ -53,15 +53,13 @@ void _raw_spin_lock_wait(raw_spinlock_t *lp, unsigned int pc)
}
if (__raw_spin_is_locked(lp))
continue;
- if (_raw_compare_and_swap(&lp->owner_cpu, 0, cpu) == 0) {
- lp->owner_pc = pc;
+ if (_raw_compare_and_swap(&lp->owner_cpu, 0, cpu) == 0)
return;
- }
}
}
EXPORT_SYMBOL(_raw_spin_lock_wait);
-int _raw_spin_trylock_retry(raw_spinlock_t *lp, unsigned int pc)
+int _raw_spin_trylock_retry(raw_spinlock_t *lp)
{
unsigned int cpu = ~smp_processor_id();
int count;
@@ -69,10 +67,8 @@ int _raw_spin_trylock_retry(raw_spinlock_t *lp, unsigned int pc)
for (count = spin_retry; count > 0; count--) {
if (__raw_spin_is_locked(lp))
continue;
- if (_raw_compare_and_swap(&lp->owner_cpu, 0, cpu) == 0) {
- lp->owner_pc = pc;
+ if (_raw_compare_and_swap(&lp->owner_cpu, 0, cpu) == 0)
return 1;
- }
}
return 0;
}