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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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15
include/linux/lockdep.h
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@@ -185,12 +185,19 @@ extern void lockdep_unregister_key(struct lock_class_key *key);
* to lockdep:
*/
extern void lockdep_init_map_waits(struct lockdep_map *lock, const char *name,
struct lock_class_key *key, int subclass, short inner, short outer);
extern void lockdep_init_map_type(struct lockdep_map *lock, const char *name,
struct lock_class_key *key, int subclass, u8 inner, u8 outer, u8 lock_type);
static inline void
lockdep_init_map_waits(struct lockdep_map *lock, const char *name,
struct lock_class_key *key, int subclass, u8 inner, u8 outer)
{
lockdep_init_map_type(lock, name, key, subclass, inner, LD_WAIT_INV, LD_LOCK_NORMAL);
}
static inline void
lockdep_init_map_wait(struct lockdep_map *lock, const char *name,
struct lock_class_key *key, int subclass, short inner)
struct lock_class_key *key, int subclass, u8 inner)
{
lockdep_init_map_waits(lock, name, key, subclass, inner, LD_WAIT_INV);
}
@@ -340,6 +347,8 @@ static inline void lockdep_set_selftest_task(struct task_struct *task)
# define lock_set_class(l, n, k, s, i) do { } while (0)
# define lock_set_subclass(l, s, i) do { } while (0)
# define lockdep_init() do { } while (0)
# define lockdep_init_map_type(lock, name, key, sub, inner, outer, type) \
do { (void)(name); (void)(key); } while (0)
# define lockdep_init_map_waits(lock, name, key, sub, inner, outer) \
do { (void)(name); (void)(key); } while (0)
# define lockdep_init_map_wait(lock, name, key, sub, inner) \