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Diffstat (limited to 'kernel/futex.c')
-rw-r--r--kernel/futex.c64
1 files changed, 30 insertions, 34 deletions
diff --git a/kernel/futex.c b/kernel/futex.c
index 40a8777a27d..38cf606a2d7 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -283,8 +283,7 @@ again:
return 0;
}
-static inline
-void put_futex_key(int fshared, union futex_key *key)
+static inline void put_futex_key(union futex_key *key)
{
drop_futex_key_refs(key);
}
@@ -907,7 +906,7 @@ static int futex_wake(u32 __user *uaddr, int fshared, int nr_wake, u32 bitset)
}
spin_unlock(&hb->lock);
- put_futex_key(fshared, &key);
+ put_futex_key(&key);
out:
return ret;
}
@@ -965,8 +964,8 @@ retry_private:
if (!fshared)
goto retry_private;
- put_futex_key(fshared, &key2);
- put_futex_key(fshared, &key1);
+ put_futex_key(&key2);
+ put_futex_key(&key1);
goto retry;
}
@@ -996,9 +995,9 @@ retry_private:
double_unlock_hb(hb1, hb2);
out_put_keys:
- put_futex_key(fshared, &key2);
+ put_futex_key(&key2);
out_put_key1:
- put_futex_key(fshared, &key1);
+ put_futex_key(&key1);
out:
return ret;
}
@@ -1219,8 +1218,8 @@ retry_private:
if (!fshared)
goto retry_private;
- put_futex_key(fshared, &key2);
- put_futex_key(fshared, &key1);
+ put_futex_key(&key2);
+ put_futex_key(&key1);
goto retry;
}
if (curval != *cmpval) {
@@ -1260,8 +1259,8 @@ retry_private:
break;
case -EFAULT:
double_unlock_hb(hb1, hb2);
- put_futex_key(fshared, &key2);
- put_futex_key(fshared, &key1);
+ put_futex_key(&key2);
+ put_futex_key(&key1);
ret = fault_in_user_writeable(uaddr2);
if (!ret)
goto retry;
@@ -1269,8 +1268,8 @@ retry_private:
case -EAGAIN:
/* The owner was exiting, try again. */
double_unlock_hb(hb1, hb2);
- put_futex_key(fshared, &key2);
- put_futex_key(fshared, &key1);
+ put_futex_key(&key2);
+ put_futex_key(&key1);
cond_resched();
goto retry;
default:
@@ -1352,9 +1351,9 @@ out_unlock:
drop_futex_key_refs(&key1);
out_put_keys:
- put_futex_key(fshared, &key2);
+ put_futex_key(&key2);
out_put_key1:
- put_futex_key(fshared, &key1);
+ put_futex_key(&key1);
out:
if (pi_state != NULL)
free_pi_state(pi_state);
@@ -1494,7 +1493,7 @@ static void unqueue_me_pi(struct futex_q *q)
* private futexes.
*/
static int fixup_pi_state_owner(u32 __user *uaddr, struct futex_q *q,
- struct task_struct *newowner, int fshared)
+ struct task_struct *newowner)
{
u32 newtid = task_pid_vnr(newowner) | FUTEX_WAITERS;
struct futex_pi_state *pi_state = q->pi_state;
@@ -1600,7 +1599,6 @@ static long futex_wait_restart(struct restart_block *restart);
/**
* fixup_owner() - Post lock pi_state and corner case management
* @uaddr: user address of the futex
- * @fshared: whether the futex is shared (1) or not (0)
* @q: futex_q (contains pi_state and access to the rt_mutex)
* @locked: if the attempt to take the rt_mutex succeeded (1) or not (0)
*
@@ -1613,8 +1611,7 @@ static long futex_wait_restart(struct restart_block *restart);
* 0 - success, lock not taken
* <0 - on error (-EFAULT)
*/
-static int fixup_owner(u32 __user *uaddr, int fshared, struct futex_q *q,
- int locked)
+static int fixup_owner(u32 __user *uaddr, struct futex_q *q, int locked)
{
struct task_struct *owner;
int ret = 0;
@@ -1625,7 +1622,7 @@ static int fixup_owner(u32 __user *uaddr, int fshared, struct futex_q *q,
* did a lock-steal - fix up the PI-state in that case:
*/
if (q->pi_state->owner != current)
- ret = fixup_pi_state_owner(uaddr, q, current, fshared);
+ ret = fixup_pi_state_owner(uaddr, q, current);
goto out;
}
@@ -1652,7 +1649,7 @@ static int fixup_owner(u32 __user *uaddr, int fshared, struct futex_q *q,
* lock. Fix the state up.
*/
owner = rt_mutex_owner(&q->pi_state->pi_mutex);
- ret = fixup_pi_state_owner(uaddr, q, owner, fshared);
+ ret = fixup_pi_state_owner(uaddr, q, owner);
goto out;
}
@@ -1772,7 +1769,7 @@ retry_private:
if (!fshared)
goto retry_private;
- put_futex_key(fshared, &q->key);
+ put_futex_key(&q->key);
goto retry;
}
@@ -1783,7 +1780,7 @@ retry_private:
out:
if (ret)
- put_futex_key(fshared, &q->key);
+ put_futex_key(&q->key);
return ret;
}
@@ -1941,7 +1938,7 @@ retry_private:
* exit to complete.
*/
queue_unlock(&q, hb);
- put_futex_key(fshared, &q.key);
+ put_futex_key(&q.key);
cond_resched();
goto retry;
default:
@@ -1971,7 +1968,7 @@ retry_private:
* Fixup the pi_state owner and possibly acquire the lock if we
* haven't already.
*/
- res = fixup_owner(uaddr, fshared, &q, !ret);
+ res = fixup_owner(uaddr, &q, !ret);
/*
* If fixup_owner() returned an error, proprogate that. If it acquired
* the lock, clear our -ETIMEDOUT or -EINTR.
@@ -1995,7 +1992,7 @@ out_unlock_put_key:
queue_unlock(&q, hb);
out_put_key:
- put_futex_key(fshared, &q.key);
+ put_futex_key(&q.key);
out:
if (to)
destroy_hrtimer_on_stack(&to->timer);
@@ -2011,7 +2008,7 @@ uaddr_faulted:
if (!fshared)
goto retry_private;
- put_futex_key(fshared, &q.key);
+ put_futex_key(&q.key);
goto retry;
}
@@ -2093,14 +2090,14 @@ retry:
out_unlock:
spin_unlock(&hb->lock);
- put_futex_key(fshared, &key);
+ put_futex_key(&key);
out:
return ret;
pi_faulted:
spin_unlock(&hb->lock);
- put_futex_key(fshared, &key);
+ put_futex_key(&key);
ret = fault_in_user_writeable(uaddr);
if (!ret)
@@ -2273,8 +2270,7 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, int fshared,
*/
if (q.pi_state && (q.pi_state->owner != current)) {
spin_lock(q.lock_ptr);
- ret = fixup_pi_state_owner(uaddr2, &q, current,
- fshared);
+ ret = fixup_pi_state_owner(uaddr2, &q, current);
spin_unlock(q.lock_ptr);
}
} else {
@@ -2293,7 +2289,7 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, int fshared,
* Fixup the pi_state owner and possibly acquire the lock if we
* haven't already.
*/
- res = fixup_owner(uaddr2, fshared, &q, !ret);
+ res = fixup_owner(uaddr2, &q, !ret);
/*
* If fixup_owner() returned an error, proprogate that. If it
* acquired the lock, clear -ETIMEDOUT or -EINTR.
@@ -2324,9 +2320,9 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, int fshared,
}
out_put_keys:
- put_futex_key(fshared, &q.key);
+ put_futex_key(&q.key);
out_key2:
- put_futex_key(fshared, &key2);
+ put_futex_key(&key2);
out:
if (to) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-18 03:38:41 +0000