patch-2.4.13 linux/include/linux/spinlock.h
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- Lines: 11
- Date:
Tue Oct 23 21:59:06 2001
- Orig file:
v2.4.12/linux/include/linux/spinlock.h
- Orig date:
Thu Oct 18 13:47:37 2001
diff -u --recursive --new-file v2.4.12/linux/include/linux/spinlock.h linux/include/linux/spinlock.h
@@ -30,6 +30,10 @@
#define write_unlock_irqrestore(lock, flags) do { write_unlock(lock); local_irq_restore(flags); } while (0)
#define write_unlock_irq(lock) do { write_unlock(lock); local_irq_enable(); } while (0)
#define write_unlock_bh(lock) do { write_unlock(lock); local_bh_enable(); } while (0)
+#define spin_trylock_bh(lock) ({ int __r; local_bh_disable();\
+ __r = spin_trylock(lock); \
+ if (!__r) local_bh_enable(); \
+ __r; })
#ifdef CONFIG_SMP
#include <asm/spinlock.h>
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