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locking/percpu-rwsem, lockdep: Make percpu-rwsem use its own lockdep_map

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As preparation for replacing the embedded rwsem, give percpu-rwsem its
own lockdep_map.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Davidlohr Bueso <dbueso@suse.de>
Acked-by: Will Deacon <will@kernel.org>
Acked-by: Waiman Long <longman@redhat.com>
Tested-by: Juri Lelli <juri.lelli@redhat.com>
Link: https://lkml.kernel.org/r/20200131151539.927625541@infradead.org
This commit is contained in:
Peter Zijlstra
2019-10-30 20:01:26 +01:00
committed by Ingo Molnar
parent 810507fe6f
commit 1751060e25
5 changed files with 37 additions and 18 deletions
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4
kernel/locking/rwsem.c
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@@ -1383,7 +1383,7 @@ static inline int __down_read_trylock(struct rw_semaphore *sem)
/*
* lock for writing
*/
static inline void __down_write(struct rw_semaphore *sem)
inline void __down_write(struct rw_semaphore *sem)
{
long tmp = RWSEM_UNLOCKED_VALUE;
@@ -1446,7 +1446,7 @@ inline void __up_read(struct rw_semaphore *sem)
/*
* unlock after writing
*/
static inline void __up_write(struct rw_semaphore *sem)
inline void __up_write(struct rw_semaphore *sem)
{
long tmp;