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authorLai Jiangshan <laijs@cn.fujitsu.com>2012-10-10 01:49:54 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-10-10 09:15:44 +0400
commit4b2c551f77f5a0c496e2125b1d883f4b26aabf2c (patch)
tree13b861ea27340133a057b1a9e90fa5be8b4d1283 /include/linux/lglock.h
parent466cab878ef98a0618734a1fa64a02e5fbf90867 (diff)
downloadlinux-4b2c551f77f5a0c496e2125b1d883f4b26aabf2c.tar.xz
lglock: add DEFINE_STATIC_LGLOCK()
When the lglock doesn't need to be exported we can use DEFINE_STATIC_LGLOCK(). Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Andi Kleen <ak@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux/lglock.h')
-rw-r--r--include/linux/lglock.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/lglock.h b/include/linux/lglock.h
index 8f974517c48a..0d24e932db0b 100644
--- a/include/linux/lglock.h
+++ b/include/linux/lglock.h
@@ -32,7 +32,8 @@
#define br_write_lock(name) lg_global_lock(name)
#define br_write_unlock(name) lg_global_unlock(name)
-#define DEFINE_BRLOCK(name) DEFINE_LGLOCK(name)
+#define DEFINE_BRLOCK(name) DEFINE_LGLOCK(name)
+#define DEFINE_STATIC_BRLOCK(name) DEFINE_STATIC_LGLOCK(name)
#ifdef CONFIG_DEBUG_LOCK_ALLOC
#define LOCKDEP_INIT_MAP lockdep_init_map
@@ -53,6 +54,11 @@ struct lglock {
= __ARCH_SPIN_LOCK_UNLOCKED; \
struct lglock name = { .lock = &name ## _lock }
+#define DEFINE_STATIC_LGLOCK(name) \
+ static DEFINE_PER_CPU(arch_spinlock_t, name ## _lock) \
+ = __ARCH_SPIN_LOCK_UNLOCKED; \
+ static struct lglock name = { .lock = &name ## _lock }
+
void lg_lock_init(struct lglock *lg, char *name);
void lg_local_lock(struct lglock *lg);
void lg_local_unlock(struct lglock *lg);