Remove the leftovers of sigqueue preallocation as it's not longer used.
Signed-off-by: Thomas Gleixner <[email protected]>
---
include/linux/sched/signal.h | 2 --
kernel/signal.c | 43 +++++++------------------------------------
2 files changed, 7 insertions(+), 38 deletions(-)
--- a/include/linux/sched/signal.h
+++ b/include/linux/sched/signal.h
@@ -337,8 +337,6 @@ extern void force_fatal_sig(int);
extern void force_exit_sig(int);
extern int send_sig(int, struct task_struct *, int);
extern int zap_other_threads(struct task_struct *p);
-extern struct sigqueue *sigqueue_alloc(void);
-extern void sigqueue_free(struct sigqueue *);
extern int do_sigaction(int, struct k_sigaction *, struct k_sigaction *);
static inline void clear_notify_signal(void)
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -439,8 +439,8 @@ static void __sigqueue_init(struct sigqu
* - this may be called without locks if and only if t == current, otherwise an
* appropriate lock must be held to stop the target task from exiting
*/
-static struct sigqueue *__sigqueue_alloc(int sig, struct task_struct *t, gfp_t gfp_flags,
- int override_rlimit, const unsigned int sigqueue_flags)
+static struct sigqueue *sigqueue_alloc(int sig, struct task_struct *t, gfp_t gfp_flags,
+ int override_rlimit)
{
struct ucounts *ucounts = sig_get_ucounts(t, sig, override_rlimit);
struct sigqueue *q;
@@ -454,14 +454,16 @@ static struct sigqueue *__sigqueue_alloc
return NULL;
}
- __sigqueue_init(q, ucounts, sigqueue_flags);
+ __sigqueue_init(q, ucounts, 0);
return q;
}
static void __sigqueue_free(struct sigqueue *q)
{
- if (q->flags & SIGQUEUE_PREALLOC)
+ if (q->flags & SIGQUEUE_PREALLOC) {
+ posixtimer_sigqueue_putref(q);
return;
+ }
if (q->ucounts) {
dec_rlimit_put_ucounts(q->ucounts, UCOUNT_RLIMIT_SIGPENDING);
q->ucounts = NULL;
@@ -1065,7 +1067,7 @@ static int __send_signal_locked(int sig,
else
override_rlimit = 0;
- q = __sigqueue_alloc(sig, t, GFP_ATOMIC, override_rlimit, 0);
+ q = sigqueue_alloc(sig, t, GFP_ATOMIC, override_rlimit);
if (q) {
list_add_tail(&q->list, &pending->list);
@@ -1925,37 +1927,6 @@ bool posixtimer_init_sigqueue(struct sig
return true;
}
-struct sigqueue *sigqueue_alloc(void)
-{
- return __sigqueue_alloc(-1, current, GFP_KERNEL, 0, SIGQUEUE_PREALLOC);
-}
-
-void sigqueue_free(struct sigqueue *q)
-{
- spinlock_t *lock = ¤t->sighand->siglock;
- unsigned long flags;
-
- if (WARN_ON_ONCE(!(q->flags & SIGQUEUE_PREALLOC)))
- return;
- /*
- * We must hold ->siglock while testing q->list
- * to serialize with collect_signal() or with
- * __exit_signal()->flush_sigqueue().
- */
- spin_lock_irqsave(lock, flags);
- q->flags &= ~SIGQUEUE_PREALLOC;
- /*
- * If it is queued it will be freed when dequeued,
- * like the "regular" sigqueue.
- */
- if (!list_empty(&q->list))
- q = NULL;
- spin_unlock_irqrestore(lock, flags);
-
- if (q)
- __sigqueue_free(q);
-}
-
static void posixtimer_queue_sigqueue(struct sigqueue *q, struct task_struct *t, enum pid_type type)
{
struct sigpending *pending;