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| author | Namhyung Kim <namhyung@kernel.org> | 2022-08-10 15:03:46 -0700 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-08-19 19:47:51 +0200 |
| commit | 501f7f69bca195da266de83eb2c26c30813fba97 (patch) | |
| tree | 5ad7c6a8ed7060076e1713c9ad35b2d862906665 /kernel/locking | |
| parent | 9aeaf5bc4e30ec968ae660b865ed491a28daf500 (diff) | |
| download | linux-stable-501f7f69bca195da266de83eb2c26c30813fba97.tar.gz linux-stable-501f7f69bca195da266de83eb2c26c30813fba97.tar.bz2 linux-stable-501f7f69bca195da266de83eb2c26c30813fba97.zip | |
locking: Add __lockfunc to slow path functions
So that we can skip the functions in the perf lock contention and other
places like /proc/PID/wchan.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Waiman Long <longman@redhat.com>
Link: https://lore.kernel.org/r/20220810220346.1919485-1-namhyung@kernel.org
Diffstat (limited to 'kernel/locking')
| -rw-r--r-- | kernel/locking/qrwlock.c | 4 | ||||
| -rw-r--r-- | kernel/locking/qspinlock.c | 2 | ||||
| -rw-r--r-- | kernel/locking/qspinlock_paravirt.h | 4 |
3 files changed, 5 insertions, 5 deletions
diff --git a/kernel/locking/qrwlock.c b/kernel/locking/qrwlock.c index 2e1600906c9f..d2ef312a8611 100644 --- a/kernel/locking/qrwlock.c +++ b/kernel/locking/qrwlock.c @@ -18,7 +18,7 @@ * queued_read_lock_slowpath - acquire read lock of a queued rwlock * @lock: Pointer to queued rwlock structure */ -void queued_read_lock_slowpath(struct qrwlock *lock) +void __lockfunc queued_read_lock_slowpath(struct qrwlock *lock) { /* * Readers come here when they cannot get the lock without waiting @@ -63,7 +63,7 @@ EXPORT_SYMBOL(queued_read_lock_slowpath); * queued_write_lock_slowpath - acquire write lock of a queued rwlock * @lock : Pointer to queued rwlock structure */ -void queued_write_lock_slowpath(struct qrwlock *lock) +void __lockfunc queued_write_lock_slowpath(struct qrwlock *lock) { int cnts; diff --git a/kernel/locking/qspinlock.c b/kernel/locking/qspinlock.c index 65a9a10caa6f..2b23378775fe 100644 --- a/kernel/locking/qspinlock.c +++ b/kernel/locking/qspinlock.c @@ -313,7 +313,7 @@ static __always_inline u32 __pv_wait_head_or_lock(struct qspinlock *lock, * contended : (*,x,y) +--> (*,0,0) ---> (*,0,1) -' : * queue : ^--' : */ -void queued_spin_lock_slowpath(struct qspinlock *lock, u32 val) +void __lockfunc queued_spin_lock_slowpath(struct qspinlock *lock, u32 val) { struct mcs_spinlock *prev, *next, *node; u32 old, tail; diff --git a/kernel/locking/qspinlock_paravirt.h b/kernel/locking/qspinlock_paravirt.h index e84d21aa0722..6afc249ce697 100644 --- a/kernel/locking/qspinlock_paravirt.h +++ b/kernel/locking/qspinlock_paravirt.h @@ -489,7 +489,7 @@ gotlock: * PV versions of the unlock fastpath and slowpath functions to be used * instead of queued_spin_unlock(). */ -__visible void +__visible __lockfunc void __pv_queued_spin_unlock_slowpath(struct qspinlock *lock, u8 locked) { struct pv_node *node; @@ -544,7 +544,7 @@ __pv_queued_spin_unlock_slowpath(struct qspinlock *lock, u8 locked) #include <asm/qspinlock_paravirt.h> #ifndef __pv_queued_spin_unlock -__visible void __pv_queued_spin_unlock(struct qspinlock *lock) +__visible __lockfunc void __pv_queued_spin_unlock(struct qspinlock *lock) { u8 locked; |