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Message-Id: <20210923171111.300673-4-andrealmeid@collabora.com>
Date: Thu, 23 Sep 2021 14:10:52 -0300
From: André Almeida <andrealmeid@...labora.com>
To: Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>,
Peter Zijlstra <peterz@...radead.org>,
Darren Hart <dvhart@...radead.org>,
linux-kernel@...r.kernel.org, Steven Rostedt <rostedt@...dmis.org>,
Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: kernel@...labora.com, krisman@...labora.com,
linux-api@...r.kernel.org, libc-alpha@...rceware.org,
mtk.manpages@...il.com, Davidlohr Bueso <dave@...olabs.net>,
Arnd Bergmann <arnd@...db.de>,
André Almeida <andrealmeid@...labora.com>
Subject: [PATCH v2 03/22] futex: Rename {,__}{,un}queue_me()
From: Peter Zijlstra <peterz@...radead.org>
In order to prepare introducing these symbols into the global
namespace; rename them:
s/\<\(__\)*\(un\)*queue_me/\1futex_\2queue/g
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Reviewed-by: André Almeida <andrealmeid@...labora.com>
Signed-off-by: André Almeida <andrealmeid@...labora.com>
---
kernel/futex/core.c | 46 ++++++++++++++++++++++-----------------------
1 file changed, 23 insertions(+), 23 deletions(-)
diff --git a/kernel/futex/core.c b/kernel/futex/core.c
index 69d98929f2f5..91f94b45c2e8 100644
--- a/kernel/futex/core.c
+++ b/kernel/futex/core.c
@@ -190,7 +190,7 @@ struct futex_pi_state {
* the second.
*
* PI futexes are typically woken before they are removed from the hash list via
- * the rt_mutex code. See unqueue_me_pi().
+ * the rt_mutex code. See futex_unqueue_pi().
*/
struct futex_q {
struct plist_node list;
@@ -260,7 +260,7 @@ enum {
};
static const struct futex_q futex_q_init = {
- /* list gets initialized in queue_me()*/
+ /* list gets initialized in futex_queue()*/
.key = FUTEX_KEY_INIT,
.bitset = FUTEX_BITSET_MATCH_ANY,
.requeue_state = ATOMIC_INIT(Q_REQUEUE_PI_NONE),
@@ -1047,7 +1047,7 @@ static int attach_to_pi_state(u32 __user *uaddr, u32 uval,
/*
* We get here with hb->lock held, and having found a
* futex_top_waiter(). This means that futex_lock_pi() of said futex_q
- * has dropped the hb->lock in between queue_me() and unqueue_me_pi(),
+ * has dropped the hb->lock in between futex_queue() and futex_unqueue_pi(),
* which in turn means that futex_lock_pi() still has a reference on
* our pi_state.
*
@@ -2421,7 +2421,7 @@ static inline struct futex_hash_bucket *queue_lock(struct futex_q *q)
* Increment the counter before taking the lock so that
* a potential waker won't miss a to-be-slept task that is
* waiting for the spinlock. This is safe as all queue_lock()
- * users end up calling queue_me(). Similarly, for housekeeping,
+ * users end up calling futex_queue(). Similarly, for housekeeping,
* decrement the counter at queue_unlock() when some error has
* occurred and we don't end up adding the task to the list.
*/
@@ -2441,7 +2441,7 @@ queue_unlock(struct futex_hash_bucket *hb)
hb_waiters_dec(hb);
}
-static inline void __queue_me(struct futex_q *q, struct futex_hash_bucket *hb)
+static inline void __futex_queue(struct futex_q *q, struct futex_hash_bucket *hb)
{
int prio;
@@ -2461,36 +2461,36 @@ static inline void __queue_me(struct futex_q *q, struct futex_hash_bucket *hb)
}
/**
- * queue_me() - Enqueue the futex_q on the futex_hash_bucket
+ * futex_queue() - Enqueue the futex_q on the futex_hash_bucket
* @q: The futex_q to enqueue
* @hb: The destination hash bucket
*
* The hb->lock must be held by the caller, and is released here. A call to
- * queue_me() is typically paired with exactly one call to unqueue_me(). The
- * exceptions involve the PI related operations, which may use unqueue_me_pi()
+ * futex_queue() is typically paired with exactly one call to futex_unqueue(). The
+ * exceptions involve the PI related operations, which may use futex_unqueue_pi()
* or nothing if the unqueue is done as part of the wake process and the unqueue
* state is implicit in the state of woken task (see futex_wait_requeue_pi() for
* an example).
*/
-static inline void queue_me(struct futex_q *q, struct futex_hash_bucket *hb)
+static inline void futex_queue(struct futex_q *q, struct futex_hash_bucket *hb)
__releases(&hb->lock)
{
- __queue_me(q, hb);
+ __futex_queue(q, hb);
spin_unlock(&hb->lock);
}
/**
- * unqueue_me() - Remove the futex_q from its futex_hash_bucket
+ * futex_unqueue() - Remove the futex_q from its futex_hash_bucket
* @q: The futex_q to unqueue
*
- * The q->lock_ptr must not be held by the caller. A call to unqueue_me() must
- * be paired with exactly one earlier call to queue_me().
+ * The q->lock_ptr must not be held by the caller. A call to futex_unqueue() must
+ * be paired with exactly one earlier call to futex_queue().
*
* Return:
* - 1 - if the futex_q was still queued (and we removed unqueued it);
* - 0 - if the futex_q was already removed by the waking thread
*/
-static int unqueue_me(struct futex_q *q)
+static int futex_unqueue(struct futex_q *q)
{
spinlock_t *lock_ptr;
int ret = 0;
@@ -2537,7 +2537,7 @@ static int unqueue_me(struct futex_q *q)
* PI futexes can not be requeued and must remove themselves from the
* hash bucket. The hash bucket lock (i.e. lock_ptr) is held.
*/
-static void unqueue_me_pi(struct futex_q *q)
+static void futex_unqueue_pi(struct futex_q *q)
{
__unqueue_futex(q);
@@ -2787,7 +2787,7 @@ static int fixup_owner(u32 __user *uaddr, struct futex_q *q, int locked)
}
/**
- * futex_wait_queue_me() - queue_me() and wait for wakeup, timeout, or signal
+ * futex_wait_queue_me() - futex_queue() and wait for wakeup, timeout, or signal
* @hb: the futex hash bucket, must be locked by the caller
* @q: the futex_q to queue up on
* @timeout: the prepared hrtimer_sleeper, or null for no timeout
@@ -2798,11 +2798,11 @@ static void futex_wait_queue_me(struct futex_hash_bucket *hb, struct futex_q *q,
/*
* The task state is guaranteed to be set before another task can
* wake it. set_current_state() is implemented using smp_store_mb() and
- * queue_me() calls spin_unlock() upon completion, both serializing
+ * futex_queue() calls spin_unlock() upon completion, both serializing
* access to the hash list and forcing another memory barrier.
*/
set_current_state(TASK_INTERRUPTIBLE);
- queue_me(q, hb);
+ futex_queue(q, hb);
/* Arm the timer */
if (timeout)
@@ -2918,12 +2918,12 @@ int futex_wait(u32 __user *uaddr, unsigned int flags, u32 val, ktime_t *abs_time
if (ret)
goto out;
- /* queue_me and wait for wakeup, timeout, or a signal. */
+ /* futex_queue and wait for wakeup, timeout, or a signal. */
futex_wait_queue_me(hb, &q, to);
/* If we were woken (and unqueued), we succeeded, whatever. */
ret = 0;
- if (!unqueue_me(&q))
+ if (!futex_unqueue(&q))
goto out;
ret = -ETIMEDOUT;
if (to && !to->task)
@@ -3049,7 +3049,7 @@ int futex_lock_pi(u32 __user *uaddr, unsigned int flags, ktime_t *time, int tryl
/*
* Only actually queue now that the atomic ops are done:
*/
- __queue_me(&q, hb);
+ __futex_queue(&q, hb);
if (trylock) {
ret = rt_mutex_futex_trylock(&q.pi_state->pi_mutex);
@@ -3121,7 +3121,7 @@ int futex_lock_pi(u32 __user *uaddr, unsigned int flags, ktime_t *time, int tryl
if (res)
ret = (res < 0) ? res : 0;
- unqueue_me_pi(&q);
+ futex_unqueue_pi(&q);
spin_unlock(q.lock_ptr);
goto out;
@@ -3479,7 +3479,7 @@ int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags,
if (res)
ret = (res < 0) ? res : 0;
- unqueue_me_pi(&q);
+ futex_unqueue_pi(&q);
spin_unlock(q.lock_ptr);
if (ret == -EINTR) {
--
2.33.0
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