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futex: Rename: hb_waiter_{inc,dec,pending}() 

In order to prepare introducing these symbols into the global
namespace; rename them:

  s/hb_waiters_/futex_&/g

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: André Almeida <andrealmeid@collabora.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: André Almeida <andrealmeid@collabora.com>
Link: https://lore.kernel.org/r/20210923171111.300673-11-andrealmeid@collabora.com
This commit is contained in:
Peter Zijlstra 2021-09-23 14:10:59 -03:00
parent 85dc28fa4e
commit 832c0542c0
1 changed files with 17 additions and 17 deletions
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34
kernel/futex/core.c
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@ -115,8 +115,8 @@
* waiters--; (b) unlock(hash_bucket(futex));
*
* Where (A) orders the waiters increment and the futex value read through
* atomic operations (see hb_waiters_inc) and where (B) orders the write
* to futex and the waiters read (see hb_waiters_pending()).
* atomic operations (see futex_hb_waiters_inc) and where (B) orders the write
* to futex and the waiters read (see futex_hb_waiters_pending()).
*
* This yields the following case (where X:=waiters, Y:=futex):
*
@ -272,7 +272,7 @@ late_initcall(fail_futex_debugfs);
/*
* Reflects a new waiter being added to the waitqueue.
*/
static inline void hb_waiters_inc(struct futex_hash_bucket *hb)
static inline void futex_hb_waiters_inc(struct futex_hash_bucket *hb)
{
#ifdef CONFIG_SMP
atomic_inc(&hb->waiters);
@ -287,14 +287,14 @@ static inline void hb_waiters_inc(struct futex_hash_bucket *hb)
* Reflects a waiter being removed from the waitqueue by wakeup
* paths.
*/
static inline void hb_waiters_dec(struct futex_hash_bucket *hb)
static inline void futex_hb_waiters_dec(struct futex_hash_bucket *hb)
{
#ifdef CONFIG_SMP
atomic_dec(&hb->waiters);
#endif
}
static inline int hb_waiters_pending(struct futex_hash_bucket *hb)
static inline int futex_hb_waiters_pending(struct futex_hash_bucket *hb)
{
#ifdef CONFIG_SMP
/*
@ -723,7 +723,7 @@ static void __futex_unqueue(struct futex_q *q)
hb = container_of(q->lock_ptr, struct futex_hash_bucket, lock);
plist_del(&q->list, &hb->chain);
hb_waiters_dec(hb);
futex_hb_waiters_dec(hb);
}
/*
@ -802,7 +802,7 @@ int futex_wake(u32 __user *uaddr, unsigned int flags, int nr_wake, u32 bitset)
hb = futex_hash(&key);
/* Make sure we really have tasks to wakeup */
if (!hb_waiters_pending(hb))
if (!futex_hb_waiters_pending(hb))
return ret;
spin_lock(&hb->lock);
@ -979,8 +979,8 @@ void requeue_futex(struct futex_q *q, struct futex_hash_bucket *hb1,
*/
if (likely(&hb1->chain != &hb2->chain)) {
plist_del(&q->list, &hb1->chain);
hb_waiters_dec(hb1);
hb_waiters_inc(hb2);
futex_hb_waiters_dec(hb1);
futex_hb_waiters_inc(hb2);
plist_add(&q->list, &hb2->chain);
q->lock_ptr = &hb2->lock;
}
@ -1341,7 +1341,7 @@ retry:
hb2 = futex_hash(&key2);
retry_private:
hb_waiters_inc(hb2);
futex_hb_waiters_inc(hb2);
double_lock_hb(hb1, hb2);
if (likely(cmpval != NULL)) {
@ -1351,7 +1351,7 @@ retry_private:
if (unlikely(ret)) {
double_unlock_hb(hb1, hb2);
hb_waiters_dec(hb2);
futex_hb_waiters_dec(hb2);
ret = get_user(curval, uaddr1);
if (ret)
@ -1437,7 +1437,7 @@ retry_private:
*/
case -EFAULT:
double_unlock_hb(hb1, hb2);
hb_waiters_dec(hb2);
futex_hb_waiters_dec(hb2);
ret = fault_in_user_writeable(uaddr2);
if (!ret)
goto retry;
@ -1451,7 +1451,7 @@ retry_private:
* - EAGAIN: The user space value changed.
*/
double_unlock_hb(hb1, hb2);
hb_waiters_dec(hb2);
futex_hb_waiters_dec(hb2);
/*
* Handle the case where the owner is in the middle of
* exiting. Wait for the exit to complete otherwise
@ -1570,7 +1570,7 @@ retry_private:
out_unlock:
double_unlock_hb(hb1, hb2);
wake_up_q(&wake_q);
hb_waiters_dec(hb2);
futex_hb_waiters_dec(hb2);
return ret ? ret : task_count;
}
@ -1590,7 +1590,7 @@ struct futex_hash_bucket *futex_q_lock(struct futex_q *q)
* decrement the counter at futex_q_unlock() when some error has
* occurred and we don't end up adding the task to the list.
*/
hb_waiters_inc(hb); /* implies smp_mb(); (A) */
futex_hb_waiters_inc(hb); /* implies smp_mb(); (A) */
q->lock_ptr = &hb->lock;
@ -1602,7 +1602,7 @@ void futex_q_unlock(struct futex_hash_bucket *hb)
__releases(&hb->lock)
{
spin_unlock(&hb->lock);
hb_waiters_dec(hb);
futex_hb_waiters_dec(hb);
}
void __futex_queue(struct futex_q *q, struct futex_hash_bucket *hb)
@ -1932,7 +1932,7 @@ int handle_early_requeue_pi_wakeup(struct futex_hash_bucket *hb,
* Unqueue the futex_q and determine which it was.
*/
plist_del(&q->list, &hb->chain);
hb_waiters_dec(hb);
futex_hb_waiters_dec(hb);
/* Handle spurious wakeups gracefully */
ret = -EWOULDBLOCK;