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authorHeiko Carstens <heiko.carstens@de.ibm.com>2008-01-26 08:11:03 -0500
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2008-01-26 08:11:14 -0500
commit3b4beb31759765efdda9f9431aebfedf828bbfe0 (patch)
tree9d8a7de6c484f8f2bbda874f41ebcad4af7c9d53 /arch/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 'arch/s390')
-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 8d76403fcf89..59c56c3d72d0 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)
39 _raw_yield(); 39 _raw_yield();
40} 40}
41 41
42void _raw_spin_lock_wait(raw_spinlock_t *lp, unsigned int pc) 42void _raw_spin_lock_wait(raw_spinlock_t *lp)
43{ 43{
44 int count = spin_retry; 44 int count = spin_retry;
45 unsigned int cpu = ~smp_processor_id(); 45 unsigned int cpu = ~smp_processor_id();
@@ -53,15 +53,13 @@ void _raw_spin_lock_wait(raw_spinlock_t *lp, unsigned int pc)
53 } 53 }
54 if (__raw_spin_is_locked(lp)) 54 if (__raw_spin_is_locked(lp))
55 continue; 55 continue;
56 if (_raw_compare_and_swap(&lp->owner_cpu, 0, cpu) == 0) { 56 if (_raw_compare_and_swap(&lp->owner_cpu, 0, cpu) == 0)
57 lp->owner_pc = pc;
58 return; 57 return;
59 }
60 } 58 }
61} 59}
62EXPORT_SYMBOL(_raw_spin_lock_wait); 60EXPORT_SYMBOL(_raw_spin_lock_wait);
63 61
64int _raw_spin_trylock_retry(raw_spinlock_t *lp, unsigned int pc) 62int _raw_spin_trylock_retry(raw_spinlock_t *lp)
65{ 63{
66 unsigned int cpu = ~smp_processor_id(); 64 unsigned int cpu = ~smp_processor_id();
67 int count; 65 int count;
@@ -69,10 +67,8 @@ int _raw_spin_trylock_retry(raw_spinlock_t *lp, unsigned int pc)
69 for (count = spin_retry; count > 0; count--) { 67 for (count = spin_retry; count > 0; count--) {
70 if (__raw_spin_is_locked(lp)) 68 if (__raw_spin_is_locked(lp))
71 continue; 69 continue;
72 if (_raw_compare_and_swap(&lp->owner_cpu, 0, cpu) == 0) { 70 if (_raw_compare_and_swap(&lp->owner_cpu, 0, cpu) == 0)
73 lp->owner_pc = pc;
74 return 1; 71 return 1;
75 }
76 } 72 }
77 return 0; 73 return 0;
78} 74}