X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fkernel%2Fsignal.c;h=bc2c990f3f63014a69aed4fa4935172f7b8cc053;hb=69801e7ea3995cafcbf7d621e2e2b422732f7b47;hp=1336e4c016ba2be3cb253111400a7e42c8b3a976;hpb=41f827bfbb10e03c4d228fbcc801dd51fb9983b0;p=kvmfornfv.git

diff --git a/kernel/kernel/signal.c b/kernel/kernel/signal.c
index 1336e4c01..bc2c990f3 100644
--- a/kernel/kernel/signal.c
+++ b/kernel/kernel/signal.c
@@ -246,7 +246,7 @@ static inline void print_dropped_signal(int sig)
  * RETURNS:
  * %true if @mask is set, %false if made noop because @task was dying.
  */
-bool task_set_jobctl_pending(struct task_struct *task, unsigned int mask)
+bool task_set_jobctl_pending(struct task_struct *task, unsigned long mask)
 {
 	BUG_ON(mask & ~(JOBCTL_PENDING_MASK | JOBCTL_STOP_CONSUME |
 			JOBCTL_STOP_SIGMASK | JOBCTL_TRAPPING));
@@ -298,7 +298,7 @@ void task_clear_jobctl_trapping(struct task_struct *task)
  * CONTEXT:
  * Must be called with @task->sighand->siglock held.
  */
-void task_clear_jobctl_pending(struct task_struct *task, unsigned int mask)
+void task_clear_jobctl_pending(struct task_struct *task, unsigned long mask)
 {
 	BUG_ON(mask & ~JOBCTL_PENDING_MASK);
 
@@ -353,7 +353,6 @@ static bool task_participate_group_stop(struct task_struct *task)
 	return false;
 }
 
-#ifdef __HAVE_ARCH_CMPXCHG
 static inline struct sigqueue *get_task_cache(struct task_struct *t)
 {
 	struct sigqueue *q = t->sigqueue_cache;
@@ -370,20 +369,6 @@ static inline int put_task_cache(struct task_struct *t, struct sigqueue *q)
 	return 1;
 }
 
-#else
-
-static inline struct sigqueue *get_task_cache(struct task_struct *t)
-{
-	return NULL;
-}
-
-static inline int put_task_cache(struct task_struct *t, struct sigqueue *q)
-{
-	return 1;
-}
-
-#endif
-
 /*
  * allocate a new signal queue record
  * - this may be called without locks if and only if t == current, otherwise an
@@ -487,21 +472,16 @@ void flush_task_sigqueue(struct task_struct *tsk)
 }
 
 /*
- * Flush all pending signals for a task.
+ * Flush all pending signals for this kthread.
  */
-void __flush_signals(struct task_struct *t)
-{
-	clear_tsk_thread_flag(t, TIF_SIGPENDING);
-	flush_sigqueue(&t->pending);
-	flush_sigqueue(&t->signal->shared_pending);
-}
-
 void flush_signals(struct task_struct *t)
 {
 	unsigned long flags;
 
 	spin_lock_irqsave(&t->sighand->siglock, flags);
-	__flush_signals(t);
+	clear_tsk_thread_flag(t, TIF_SIGPENDING);
+	flush_sigqueue(&t->pending);
+	flush_sigqueue(&t->signal->shared_pending);
 	spin_unlock_irqrestore(&t->sighand->siglock, flags);
 }
 
@@ -581,41 +561,6 @@ int unhandled_signal(struct task_struct *tsk, int sig)
 	return !tsk->ptrace;
 }
 
-/*
- * Notify the system that a driver wants to block all signals for this
- * process, and wants to be notified if any signals at all were to be
- * sent/acted upon.  If the notifier routine returns non-zero, then the
- * signal will be acted upon after all.  If the notifier routine returns 0,
- * then then signal will be blocked.  Only one block per process is
- * allowed.  priv is a pointer to private data that the notifier routine
- * can use to determine if the signal should be blocked or not.
- */
-void
-block_all_signals(int (*notifier)(void *priv), void *priv, sigset_t *mask)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&current->sighand->siglock, flags);
-	current->notifier_mask = mask;
-	current->notifier_data = priv;
-	current->notifier = notifier;
-	spin_unlock_irqrestore(&current->sighand->siglock, flags);
-}
-
-/* Notify the system that blocking has ended. */
-
-void
-unblock_all_signals(void)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&current->sighand->siglock, flags);
-	current->notifier = NULL;
-	current->notifier_data = NULL;
-	recalc_sigpending();
-	spin_unlock_irqrestore(&current->sighand->siglock, flags);
-}
-
 static void collect_signal(int sig, struct sigpending *list, siginfo_t *info)
 {
 	struct sigqueue *q, *first = NULL;
@@ -658,19 +603,8 @@ static int __dequeue_signal(struct sigpending *pending, sigset_t *mask,
 {
 	int sig = next_signal(pending, mask);
 
-	if (sig) {
-		if (current->notifier) {
-			if (sigismember(current->notifier_mask, sig)) {
-				if (!(current->notifier)(current->notifier_data)) {
-					clear_thread_flag(TIF_SIGPENDING);
-					return 0;
-				}
-			}
-		}
-
+	if (sig)
 		collect_signal(sig, pending, info);
-	}
-
 	return sig;
 }
 
@@ -914,7 +848,7 @@ static bool prepare_signal(int sig, struct task_struct *p, bool force)
 	sigset_t flush;
 
 	if (signal->flags & (SIGNAL_GROUP_EXIT | SIGNAL_GROUP_COREDUMP)) {
-		if (signal->flags & SIGNAL_GROUP_COREDUMP)
+		if (!(signal->flags & SIGNAL_GROUP_EXIT))
 			return sig == SIGKILL;
 		/*
 		 * The process is in the middle of dying, nothing to do.
@@ -2101,7 +2035,7 @@ static bool do_signal_stop(int signr)
 	struct signal_struct *sig = current->signal;
 
 	if (!(current->jobctl & JOBCTL_STOP_PENDING)) {
-		unsigned int gstop = JOBCTL_STOP_PENDING | JOBCTL_STOP_CONSUME;
+		unsigned long gstop = JOBCTL_STOP_PENDING | JOBCTL_STOP_CONSUME;
 		struct task_struct *t;
 
 		/* signr will be recorded in task->jobctl for retries */
@@ -2589,9 +2523,6 @@ EXPORT_SYMBOL(force_sig);
 EXPORT_SYMBOL(send_sig);
 EXPORT_SYMBOL(send_sig_info);
 EXPORT_SYMBOL(sigprocmask);
-EXPORT_SYMBOL(block_all_signals);
-EXPORT_SYMBOL(unblock_all_signals);
-
 
 /*
  * System call entry points.
@@ -3658,7 +3589,7 @@ SYSCALL_DEFINE0(pause)
 
 #endif
 
-int sigsuspend(sigset_t *set)
+static int sigsuspend(sigset_t *set)
 {
 	current->saved_sigmask = current->blocked;
 	set_current_blocked(set);