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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 /include/asm-s390
parent9f4b0ba81f158df459fa2cfc98ab1475c090f29c (diff)
[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 'include/asm-s390')
-rw-r--r--include/asm-s390/spinlock.h19
-rw-r--r--include/asm-s390/spinlock_types.h1
2 files changed, 6 insertions, 14 deletions
diff --git a/include/asm-s390/spinlock.h b/include/asm-s390/spinlock.h
index 3fd43826fd0b..c1d6e7e304e2 100644
--- a/include/asm-s390/spinlock.h
+++ b/include/asm-s390/spinlock.h
@@ -58,39 +58,32 @@ _raw_compare_and_swap(volatile unsigned int *lock,
do { while (__raw_spin_is_locked(lock)) \
_raw_spin_relax(lock); } while (0)
-extern void _raw_spin_lock_wait(raw_spinlock_t *, unsigned int pc);
-extern int _raw_spin_trylock_retry(raw_spinlock_t *, unsigned int pc);
+extern void _raw_spin_lock_wait(raw_spinlock_t *);
+extern int _raw_spin_trylock_retry(raw_spinlock_t *);
extern void _raw_spin_relax(raw_spinlock_t *lock);
static inline void __raw_spin_lock(raw_spinlock_t *lp)
{
- unsigned long pc = 1 | (unsigned long) __builtin_return_address(0);
int old;
old = _raw_compare_and_swap(&lp->owner_cpu, 0, ~smp_processor_id());
- if (likely(old == 0)) {
- lp->owner_pc = pc;
+ if (likely(old == 0))
return;
- }
- _raw_spin_lock_wait(lp, pc);
+ _raw_spin_lock_wait(lp);
}
static inline int __raw_spin_trylock(raw_spinlock_t *lp)
{
- unsigned long pc = 1 | (unsigned long) __builtin_return_address(0);
int old;
old = _raw_compare_and_swap(&lp->owner_cpu, 0, ~smp_processor_id());
- if (likely(old == 0)) {
- lp->owner_pc = pc;
+ if (likely(old == 0))
return 1;
- }
- return _raw_spin_trylock_retry(lp, pc);
+ return _raw_spin_trylock_retry(lp);
}
static inline void __raw_spin_unlock(raw_spinlock_t *lp)
{
- lp->owner_pc = 0;
_raw_compare_and_swap(&lp->owner_cpu, lp->owner_cpu, 0);
}
diff --git a/include/asm-s390/spinlock_types.h b/include/asm-s390/spinlock_types.h
index b7ac13f7aa37..654abc40de04 100644
--- a/include/asm-s390/spinlock_types.h
+++ b/include/asm-s390/spinlock_types.h
@@ -7,7 +7,6 @@
typedef struct {
volatile unsigned int owner_cpu;
- volatile unsigned int owner_pc;
} __attribute__ ((aligned (4))) raw_spinlock_t;
#define __RAW_SPIN_LOCK_UNLOCKED { 0 }