[PATCH v2 11/22] futex: Rename: match_futex()

From: André Almeida
Date: Thu Sep 23 2021 - 13:12:23 EST


From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>

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

s/match_futex/futex_match/g

Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Reviewed-by: André Almeida <andrealmeid@xxxxxxxxxxxxx>
Signed-off-by: André Almeida <andrealmeid@xxxxxxxxxxxxx>
---
kernel/futex/core.c | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/kernel/futex/core.c b/kernel/futex/core.c
index a26045e17fac..30246e63e74b 100644
--- a/kernel/futex/core.c
+++ b/kernel/futex/core.c
@@ -324,13 +324,13 @@ struct futex_hash_bucket *futex_hash(union futex_key *key)


/**
- * match_futex - Check whether two futex keys are equal
+ * futex_match - Check whether two futex keys are equal
* @key1: Pointer to key1
* @key2: Pointer to key2
*
* Return 1 if two futex_keys are equal, 0 otherwise.
*/
-static inline int match_futex(union futex_key *key1, union futex_key *key2)
+static inline int futex_match(union futex_key *key1, union futex_key *key2)
{
return (key1 && key2
&& key1->both.word == key2->both.word
@@ -381,7 +381,7 @@ futex_setup_timer(ktime_t *time, struct hrtimer_sleeper *timeout,
* a new sequence number and will _NOT_ match, even though it is the exact same
* file.
*
- * It is important that match_futex() will never have a false-positive, esp.
+ * It is important that futex_match() will never have a false-positive, esp.
* for PI futexes that can mess up the state. The above argues that false-negatives
* are only possible for malformed programs.
*/
@@ -648,7 +648,7 @@ struct futex_q *futex_top_waiter(struct futex_hash_bucket *hb, union futex_key *
struct futex_q *this;

plist_for_each_entry(this, &hb->chain, list) {
- if (match_futex(&this->key, key))
+ if (futex_match(&this->key, key))
return this;
}
return NULL;
@@ -808,7 +808,7 @@ int futex_wake(u32 __user *uaddr, unsigned int flags, int nr_wake, u32 bitset)
spin_lock(&hb->lock);

plist_for_each_entry_safe(this, next, &hb->chain, list) {
- if (match_futex (&this->key, &key)) {
+ if (futex_match (&this->key, &key)) {
if (this->pi_state || this->rt_waiter) {
ret = -EINVAL;
break;
@@ -928,7 +928,7 @@ int futex_wake_op(u32 __user *uaddr1, unsigned int flags, u32 __user *uaddr2,
}

plist_for_each_entry_safe(this, next, &hb1->chain, list) {
- if (match_futex (&this->key, &key1)) {
+ if (futex_match (&this->key, &key1)) {
if (this->pi_state || this->rt_waiter) {
ret = -EINVAL;
goto out_unlock;
@@ -942,7 +942,7 @@ int futex_wake_op(u32 __user *uaddr1, unsigned int flags, u32 __user *uaddr2,
if (op_ret > 0) {
op_ret = 0;
plist_for_each_entry_safe(this, next, &hb2->chain, list) {
- if (match_futex (&this->key, &key2)) {
+ if (futex_match (&this->key, &key2)) {
if (this->pi_state || this->rt_waiter) {
ret = -EINVAL;
goto out_unlock;
@@ -1199,7 +1199,7 @@ futex_proxy_trylock_atomic(u32 __user *pifutex, struct futex_hash_bucket *hb1,
return -EINVAL;

/* Ensure we requeue to the expected futex. */
- if (!match_futex(top_waiter->requeue_pi_key, key2))
+ if (!futex_match(top_waiter->requeue_pi_key, key2))
return -EINVAL;

/* Ensure that this does not race against an early wakeup */
@@ -1334,7 +1334,7 @@ int futex_requeue(u32 __user *uaddr1, unsigned int flags, u32 __user *uaddr2,
* The check above which compares uaddrs is not sufficient for
* shared futexes. We need to compare the keys:
*/
- if (requeue_pi && match_futex(&key1, &key2))
+ if (requeue_pi && futex_match(&key1, &key2))
return -EINVAL;

hb1 = futex_hash(&key1);
@@ -1469,7 +1469,7 @@ int futex_requeue(u32 __user *uaddr1, unsigned int flags, u32 __user *uaddr2,
if (task_count - nr_wake >= nr_requeue)
break;

- if (!match_futex(&this->key, &key1))
+ if (!futex_match(&this->key, &key1))
continue;

/*
@@ -1496,7 +1496,7 @@ int futex_requeue(u32 __user *uaddr1, unsigned int flags, u32 __user *uaddr2,
}

/* Ensure we requeue to the expected futex for requeue_pi. */
- if (!match_futex(this->requeue_pi_key, &key2)) {
+ if (!futex_match(this->requeue_pi_key, &key2)) {
ret = -EINVAL;
break;
}
@@ -2033,7 +2033,7 @@ int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags,
* The check above which compares uaddrs is not sufficient for
* shared futexes. We need to compare the keys:
*/
- if (match_futex(&q.key, &key2)) {
+ if (futex_match(&q.key, &key2)) {
futex_q_unlock(hb);
ret = -EINVAL;
goto out;
--
2.33.0