futex: Fix kernel-doc notation & typos

Convert futex_requeue() function parameters to use @name
kernel-doc notation and add @fshared & @cmpval to prevent
kernel-doc warnings.

Add @list to struct futex_q.

Fix a few typos.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
LKML-Reference: <20101013110234.89b06043.randy.dunlap@oracle.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/futex.c b/kernel/futex.c
index 92a31d4cd564f3241966e5595300bdb9f43792a2..9b9fda73ba2efece9ec48328d84ae977163a5758 100644 (file)
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -91,6 +91,7 @@ struct futex_pi_state {
 
 /**
  * struct futex_q - The hashed futex queue entry, one per waiting task
+ * @list:              priority-sorted list of tasks waiting on this futex
  * @task:              the task waiting on the futex
  * @lock_ptr:          the hash bucket lock
  * @key:               the key the futex is hashed on
@@ -104,7 +105,7 @@ struct futex_pi_state {
  *
  * A futex_q has a woken state, just like tasks have TASK_RUNNING.
  * It is considered woken when plist_node_empty(&q->list) || q->lock_ptr == 0.
- * The order of wakup is always to make the first condition true, then
+ * The order of wakeup is always to make the first condition true, then
  * the second.
  *
  * PI futexes are typically woken before they are removed from the hash list via
@@ -295,7 +296,7 @@ void put_futex_key(int fshared, union futex_key *key)
  * Slow path to fixup the fault we just took in the atomic write
  * access to @uaddr.
  *
- * We have no generic implementation of a non destructive write to the
+ * We have no generic implementation of a non-destructive write to the
  * user address. We know that we faulted in the atomic pagefault
  * disabled section so we can as well avoid the #PF overhead by
  * calling get_user_pages() right away.
@@ -515,7 +516,7 @@ lookup_pi_state(u32 uval, struct futex_hash_bucket *hb,
                         */
                        pi_state = this->pi_state;
                        /*
-                        * Userspace might have messed up non PI and PI futexes
+                        * Userspace might have messed up non-PI and PI futexes
                         */
                        if (unlikely(!pi_state))
                                return -EINVAL;
@@ -736,8 +737,8 @@ static void wake_futex(struct futex_q *q)
 
        /*
         * We set q->lock_ptr = NULL _before_ we wake up the task. If
-        * a non futex wake up happens on another CPU then the task
-        * might exit and p would dereference a non existing task
+        * a non-futex wake up happens on another CPU then the task
+        * might exit and p would dereference a non-existing task
         * struct. Prevent this by holding a reference on p across the
         * wake up.
         */
@@ -1131,11 +1132,13 @@ static int futex_proxy_trylock_atomic(u32 __user *pifutex,
 
 /**
  * futex_requeue() - Requeue waiters from uaddr1 to uaddr2
- * uaddr1:     source futex user address
- * uaddr2:     target futex user address
- * nr_wake:    number of waiters to wake (must be 1 for requeue_pi)
- * nr_requeue: number of waiters to requeue (0-INT_MAX)
- * requeue_pi: if we are attempting to requeue from a non-pi futex to a
+ * @uaddr1:    source futex user address
+ * @fshared:   0 for a PROCESS_PRIVATE futex, 1 for PROCESS_SHARED
+ * @uaddr2:    target futex user address
+ * @nr_wake:   number of waiters to wake (must be 1 for requeue_pi)
+ * @nr_requeue:        number of waiters to requeue (0-INT_MAX)
+ * @cmpval:    @uaddr1 expected value (or %NULL)
+ * @requeue_pi:        if we are attempting to requeue from a non-pi futex to a
  *             pi futex (pi to pi requeue is not supported)
  *
  * Requeue waiters on uaddr1 to uaddr2. In the requeue_pi case, try to acquire
@@ -2651,7 +2654,7 @@ static int __init futex_init(void)
         * of the complex code paths. Also we want to prevent
         * registration of robust lists in that case. NULL is
         * guaranteed to fault and we get -EFAULT on functional
-        * implementation, the non functional ones will return
+        * implementation, the non-functional ones will return
         * -ENOSYS.
         */
        curval = cmpxchg_futex_value_locked(NULL, 0, 0);