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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>
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@ -36,7 +36,7 @@ struct files_stat_struct files_stat = {
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.max_files = NR_FILE
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};
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DEFINE_LGLOCK(files_lglock);
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DEFINE_STATIC_LGLOCK(files_lglock);
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/* SLAB cache for file structures */
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static struct kmem_cache *filp_cachep __read_mostly;
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@ -33,6 +33,7 @@
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#define br_write_unlock(name) lg_global_unlock(name)
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#define DEFINE_BRLOCK(name) DEFINE_LGLOCK(name)
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#define DEFINE_STATIC_BRLOCK(name) DEFINE_STATIC_LGLOCK(name)
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#ifdef CONFIG_DEBUG_LOCK_ALLOC
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#define LOCKDEP_INIT_MAP lockdep_init_map
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@ -53,6 +54,11 @@ struct lglock {
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= __ARCH_SPIN_LOCK_UNLOCKED; \
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struct lglock name = { .lock = &name ## _lock }
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#define DEFINE_STATIC_LGLOCK(name) \
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static DEFINE_PER_CPU(arch_spinlock_t, name ## _lock) \
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= __ARCH_SPIN_LOCK_UNLOCKED; \
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static struct lglock name = { .lock = &name ## _lock }
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void lg_lock_init(struct lglock *lg, char *name);
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void lg_local_lock(struct lglock *lg);
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void lg_local_unlock(struct lglock *lg);
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