cputime: Use accessors to read task cputime stats

[deliverable/linux.git] / kernel / exit.c

diff --git a/kernel/exit.c b/kernel/exit.c
index 50d2e93c36ea6ff421192e7fb0f92a3cb0df6e63..7dd20408707ce5845bf5fd63185b0980e1c9827a 100644 (file)
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -72,18 +72,6 @@ static void __unhash_process(struct task_struct *p, bool group_dead)
                list_del_rcu(&p->tasks);
                list_del_init(&p->sibling);
                __this_cpu_dec(process_counts);
-               /*
-                * If we are the last child process in a pid namespace to be
-                * reaped, notify the reaper sleeping zap_pid_ns_processes().
-                */
-               if (IS_ENABLED(CONFIG_PID_NS)) {
-                       struct task_struct *parent = p->real_parent;
-
-                       if ((task_active_pid_ns(parent)->child_reaper == parent) &&
-                           list_empty(&parent->children) &&
-                           (parent->flags & PF_EXITING))
-                               wake_up_process(parent);
-               }
        }
        list_del_rcu(&p->thread_group);
 }
@@ -97,6 +85,7 @@ static void __exit_signal(struct task_struct *tsk)
        bool group_dead = thread_group_leader(tsk);
        struct sighand_struct *sighand;
        struct tty_struct *uninitialized_var(tty);
+       cputime_t utime, stime;
 
        sighand = rcu_dereference_check(tsk->sighand,
                                        lockdep_tasklist_lock_is_held());
@@ -135,9 +124,10 @@ static void __exit_signal(struct task_struct *tsk)
                 * We won't ever get here for the group leader, since it
                 * will have been the last reference on the signal_struct.
                 */
-               sig->utime += tsk->utime;
-               sig->stime += tsk->stime;
-               sig->gtime += tsk->gtime;
+               task_cputime(tsk, &utime, &stime);
+               sig->utime += utime;
+               sig->stime += stime;
+               sig->gtime += task_gtime(tsk);
                sig->min_flt += tsk->min_flt;
                sig->maj_flt += tsk->maj_flt;
                sig->nvcsw += tsk->nvcsw;
@@ -1104,7 +1094,7 @@ static int wait_task_zombie(struct wait_opts *wo, struct task_struct *p)
                sig = p->signal;
                psig->cutime += tgutime + sig->cutime;
                psig->cstime += tgstime + sig->cstime;
-               psig->cgtime += p->gtime + sig->gtime + sig->cgtime;
+               psig->cgtime += task_gtime(p) + sig->gtime + sig->cgtime;
                psig->cmin_flt +=
                        p->min_flt + sig->min_flt + sig->cmin_flt;
                psig->cmaj_flt +=