Use local_paca directly in arch_spin_unlock_wait(), as all processors have the
same value for the field shared_proc, so we don't need care racy here.
Reported-by: Paul E. McKenney <paul...@linux.vnet.ibm.com>
Signed-off-by: Li Zhong <zh...@linux.vnet.ibm.com>
---
arch/powerpc/lib/locks.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/lib/locks.c b/arch/powerpc/lib/locks.c
index bb7cfec..850bea6 100644
--- a/arch/powerpc/lib/locks.c
+++ b/arch/powerpc/lib/locks.c
@@ -72,7 +72,7 @@ void arch_spin_unlock_wait(arch_spinlock_t *lock)
{
while (lock->slock) {
HMT_low();
- if (SHARED_PROCESSOR)
+ if (local_paca->lppaca_ptr->shared_proc)
__spin_yield(lock);
}
HMT_medium();
--
1.7.9.5
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