Reintroduce the new write_trylock_irqsave() implementation: slightly faster,
less invasive and similar in style to the implementation of
spin_trylock_irqsave() in mainline and -mm.
Signed-off-by: Satyam Sharma <[email protected]>
Cc: Sripathi Kodi <[email protected]>
Cc: Ingo Molnar <[email protected]>
---
include/linux/spinlock.h | 7 +++++++
1 file changed, 7 insertions(+)
---
diff -ruNp a/include/linux/spinlock.h b/include/linux/spinlock.h
--- a/include/linux/spinlock.h 2007-05-11 00:25:34.000000000 +0530
+++ b/include/linux/spinlock.h 2007-05-11 00:27:35.000000000 +0530
@@ -282,6 +282,13 @@ do { \
1 : ({ local_irq_restore(flags); 0; }); \
})
+#define write_trylock_irqsave(lock, flags) \
+({ \
+ local_irq_save(flags); \
+ write_trylock(lock) ? \
+ 1 : ({ local_irq_restore(flags); 0; }); \
+})
+
/*
* Locks two spinlocks l1 and l2.
* l1_first indicates if spinlock l1 should be taken first.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
