Add fatal_signal_pending

Like signal_pending, but it's only true for signals which are fatal to this process Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
mariux64 · Dec 6, 2007 · f776d12 · f776d12
1 parent f021a3c
commit f776d12
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Showing 2 changed files with 13 additions and 1 deletion.
diff --git a/include/linux/sched.h b/include/linux/sched.h
@@ -1872,7 +1872,14 @@ static inline int signal_pending(struct task_struct *p)
 {
 	return unlikely(test_tsk_thread_flag(p,TIF_SIGPENDING));
 }
-
+
+extern int FASTCALL(__fatal_signal_pending(struct task_struct *p));
+
+static inline int fatal_signal_pending(struct task_struct *p)
+{
+	return signal_pending(p) && __fatal_signal_pending(p);
+}
+
 static inline int need_resched(void)
 {
 	return unlikely(test_thread_flag(TIF_NEED_RESCHED));

diff --git a/kernel/signal.c b/kernel/signal.c
@@ -994,6 +994,11 @@ void zap_other_threads(struct task_struct *p)
 	}
 }
 
+int fastcall __fatal_signal_pending(struct task_struct *tsk)
+{
+	return sigismember(&tsk->pending.signal, SIGKILL);
+}
+
 /*
  * Must be called under rcu_read_lock() or with tasklist_lock read-held.
  */