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locking/lockdep: Mark local_lock_t

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[ Upstream commit dfd5e3f5fe27bda91d5cc028c86ffbb7a0614489 ]

The local_lock_t's are special, because they cannot form IRQ
inversions, make sure we can tell them apart from the rest of the
locks.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Peter Zijlstra
2020-12-09 16:06:21 +01:00
committed by Greg Kroah-Hartman
parent 22b106df73
commit d5462a630f
4 changed files with 39 additions and 15 deletions
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5
include/linux/local_lock_internal.h
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@@ -18,6 +18,7 @@ typedef struct {
.dep_map = { \
.name = #lockname, \
.wait_type_inner = LD_WAIT_CONFIG, \
.lock_type = LD_LOCK_PERCPU, \
}
#else
# define LL_DEP_MAP_INIT(lockname)
@@ -30,7 +31,9 @@ do { \
static struct lock_class_key __key; \
\
debug_check_no_locks_freed((void *)lock, sizeof(*lock));\
lockdep_init_map_wait(&(lock)->dep_map, #lock, &__key, 0, LD_WAIT_CONFIG);\
lockdep_init_map_type(&(lock)->dep_map, #lock, &__key, 0, \
LD_WAIT_CONFIG, LD_WAIT_INV, \
LD_LOCK_PERCPU); \
} while (0)
#ifdef CONFIG_DEBUG_LOCK_ALLOC