PPC32: define rwlock_is_locked().

dad4b2dc · Paul Mackerras · b5038c40 · dad4b2dc
Commit dad4b2dc authored Sep 17, 2002 by Paul Mackerras
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include/asm-ppc/spinlock.h include/asm-ppc/spinlock.h +2 -0

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--- a/include/asm-ppc/spinlock.h
+++ b/include/asm-ppc/spinlock.h
@@ -100,6 +100,8 @@ typedef struct {
 #define RW_LOCK_UNLOCKED (rwlock_t) { 0 RWLOCK_DEBUG_INIT }
 #define rwlock_init(lp) do { *(lp) = RW_LOCK_UNLOCKED; } while(0)
+#define rwlock_is_locked(x)	((x)->lock != 0)
 #ifndef CONFIG_DEBUG_SPINLOCK
 static __inline__ void _raw_read_lock(rwlock_t *rw)