[PATCH] move __exit_signal() to kernel/exit.c

[mirror_ubuntu-zesty-kernel.git] / kernel / signal.c

diff --git a/kernel/signal.c b/kernel/signal.c
index b29c868bd5ee0e6aa6f841e9546da50b6316472f..6ea49f742a2f1fb777379d633302710cdc479f2e 100644 (file)
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -22,7 +22,6 @@
 #include <linux/security.h>
 #include <linux/syscalls.h>
 #include <linux/ptrace.h>
-#include <linux/posix-timers.h>
 #include <linux/signal.h>
 #include <linux/audit.h>
 #include <linux/capability.h>
@@ -295,7 +294,7 @@ static void __sigqueue_free(struct sigqueue *q)
        kmem_cache_free(sigqueue_cachep, q);
 }
 
-static void flush_sigqueue(struct sigpending *queue)
+void flush_sigqueue(struct sigpending *queue)
 {
        struct sigqueue *q;
 
@@ -321,68 +320,6 @@ void flush_signals(struct task_struct *t)
        spin_unlock_irqrestore(&t->sighand->siglock, flags);
 }
 
-/*
- * This function expects the tasklist_lock write-locked.
- */
-void __exit_signal(struct task_struct *tsk)
-{
-       struct signal_struct *sig = tsk->signal;
-       struct sighand_struct *sighand;
-
-       BUG_ON(!sig);
-       BUG_ON(!atomic_read(&sig->count));
-
-       rcu_read_lock();
-       sighand = rcu_dereference(tsk->sighand);
-       spin_lock(&sighand->siglock);
-
-       posix_cpu_timers_exit(tsk);
-       if (atomic_dec_and_test(&sig->count))
-               posix_cpu_timers_exit_group(tsk);
-       else {
-               /*
-                * If there is any task waiting for the group exit
-                * then notify it:
-                */
-               if (sig->group_exit_task && atomic_read(&sig->count) == sig->notify_count) {
-                       wake_up_process(sig->group_exit_task);
-                       sig->group_exit_task = NULL;
-               }
-               if (tsk == sig->curr_target)
-                       sig->curr_target = next_thread(tsk);
-               /*
-                * Accumulate here the counters for all threads but the
-                * group leader as they die, so they can be added into
-                * the process-wide totals when those are taken.
-                * The group leader stays around as a zombie as long
-                * as there are other threads.  When it gets reaped,
-                * the exit.c code will add its counts into these totals.
-                * We won't ever get here for the group leader, since it
-                * will have been the last reference on the signal_struct.
-                */
-               sig->utime = cputime_add(sig->utime, tsk->utime);
-               sig->stime = cputime_add(sig->stime, tsk->stime);
-               sig->min_flt += tsk->min_flt;
-               sig->maj_flt += tsk->maj_flt;
-               sig->nvcsw += tsk->nvcsw;
-               sig->nivcsw += tsk->nivcsw;
-               sig->sched_time += tsk->sched_time;
-               sig = NULL; /* Marker for below. */
-       }
-
-       tsk->signal = NULL;
-       cleanup_sighand(tsk);
-       spin_unlock(&sighand->siglock);
-       rcu_read_unlock();
-
-       clear_tsk_thread_flag(tsk,TIF_SIGPENDING);
-       flush_sigqueue(&tsk->pending);
-       if (sig) {
-               flush_sigqueue(&sig->shared_pending);
-               __cleanup_signal(sig);
-       }
-}
-
 /*
  * Flush all handlers for a task.
  */