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authorSteve French <sfrench@us.ibm.com>2006-01-17 22:49:59 -0500
committerSteve French <sfrench@us.ibm.com>2006-01-17 22:49:59 -0500
commitd65177c1ae7f085723154105c5dc8d9e16ae8265 (patch)
tree14408129d880d89cc5e937f2810f243ed1e6fcde /arch/powerpc/lib/locks.c
parentd41f084a74de860fe879403fbbad13abdf7aea8e (diff)
parent15578eeb6cd4b74492f26e60624aa1a9a52ddd7b (diff)
Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.git
Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'arch/powerpc/lib/locks.c')
-rw-r--r--arch/powerpc/lib/locks.c8
1 files changed, 2 insertions, 6 deletions
diff --git a/arch/powerpc/lib/locks.c b/arch/powerpc/lib/locks.c
index 35bd03c41dd1..8362fa272ca5 100644
--- a/arch/powerpc/lib/locks.c
+++ b/arch/powerpc/lib/locks.c
@@ -28,15 +28,13 @@
28void __spin_yield(raw_spinlock_t *lock) 28void __spin_yield(raw_spinlock_t *lock)
29{ 29{
30 unsigned int lock_value, holder_cpu, yield_count; 30 unsigned int lock_value, holder_cpu, yield_count;
31 struct paca_struct *holder_paca;
32 31
33 lock_value = lock->slock; 32 lock_value = lock->slock;
34 if (lock_value == 0) 33 if (lock_value == 0)
35 return; 34 return;
36 holder_cpu = lock_value & 0xffff; 35 holder_cpu = lock_value & 0xffff;
37 BUG_ON(holder_cpu >= NR_CPUS); 36 BUG_ON(holder_cpu >= NR_CPUS);
38 holder_paca = &paca[holder_cpu]; 37 yield_count = lppaca[holder_cpu].yield_count;
39 yield_count = holder_paca->lppaca.yield_count;
40 if ((yield_count & 1) == 0) 38 if ((yield_count & 1) == 0)
41 return; /* virtual cpu is currently running */ 39 return; /* virtual cpu is currently running */
42 rmb(); 40 rmb();
@@ -60,15 +58,13 @@ void __rw_yield(raw_rwlock_t *rw)
60{ 58{
61 int lock_value; 59 int lock_value;
62 unsigned int holder_cpu, yield_count; 60 unsigned int holder_cpu, yield_count;
63 struct paca_struct *holder_paca;
64 61
65 lock_value = rw->lock; 62 lock_value = rw->lock;
66 if (lock_value >= 0) 63 if (lock_value >= 0)
67 return; /* no write lock at present */ 64 return; /* no write lock at present */
68 holder_cpu = lock_value & 0xffff; 65 holder_cpu = lock_value & 0xffff;
69 BUG_ON(holder_cpu >= NR_CPUS); 66 BUG_ON(holder_cpu >= NR_CPUS);
70 holder_paca = &paca[holder_cpu]; 67 yield_count = lppaca[holder_cpu].yield_count;
71 yield_count = holder_paca->lppaca.yield_count;
72 if ((yield_count & 1) == 0) 68 if ((yield_count & 1) == 0)
73 return; /* virtual cpu is currently running */ 69 return; /* virtual cpu is currently running */
74 rmb(); 70 rmb();