sh/PCI: get rid of device resource fixups

[mirror_ubuntu-bionic-kernel.git] / kernel / exit.c

diff --git a/kernel/exit.c b/kernel/exit.c
index e6e01b959a0ef3b3efd0fc0624a3286a57770fc8..294b1709170d1e890c80d064c65d38c1b12a88c1 100644 (file)
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -51,6 +51,7 @@
 #include <trace/events/sched.h>
 #include <linux/hw_breakpoint.h>
 #include <linux/oom.h>
+#include <linux/writeback.h>
 
 #include <asm/uaccess.h>
 #include <asm/unistd.h>
@@ -121,9 +122,9 @@ 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 = cputime_add(sig->utime, tsk->utime);
-               sig->stime = cputime_add(sig->stime, tsk->stime);
-               sig->gtime = cputime_add(sig->gtime, tsk->gtime);
+               sig->utime += tsk->utime;
+               sig->stime += tsk->stime;
+               sig->gtime += tsk->gtime;
                sig->min_flt += tsk->min_flt;
                sig->maj_flt += tsk->maj_flt;
                sig->nvcsw += tsk->nvcsw;
@@ -679,8 +680,6 @@ static void exit_mm(struct task_struct * tsk)
        tsk->mm = NULL;
        up_read(&mm->mmap_sem);
        enter_lazy_tlb(mm, current);
-       /* We don't want this task to be frozen prematurely */
-       clear_freeze_flag(tsk);
        task_unlock(tsk);
        mm_update_next_owner(mm);
        mmput(mm);
@@ -888,7 +887,7 @@ static void check_stack_usage(void)
 static inline void check_stack_usage(void) {}
 #endif
 
-NORET_TYPE void do_exit(long code)
+void do_exit(long code)
 {
        struct task_struct *tsk = current;
        int group_dead;
@@ -965,8 +964,7 @@ NORET_TYPE void do_exit(long code)
        acct_collect(code, group_dead);
        if (group_dead)
                tty_audit_exit();
-       if (unlikely(tsk->audit_context))
-               audit_free(tsk);
+       audit_free(tsk);
 
        tsk->exit_code = code;
        taskstats_exit(tsk, group_dead);
@@ -1037,9 +1035,12 @@ NORET_TYPE void do_exit(long code)
        validate_creds_for_do_exit(tsk);
 
        preempt_disable();
+       if (tsk->nr_dirtied)
+               __this_cpu_add(dirty_throttle_leaks, tsk->nr_dirtied);
        exit_rcu();
        /* causes final put_task_struct in finish_task_switch(). */
        tsk->state = TASK_DEAD;
+       tsk->flags |= PF_NOFREEZE;      /* tell freezer to ignore us */
        schedule();
        BUG();
        /* Avoid "noreturn function does return".  */
@@ -1049,7 +1050,7 @@ NORET_TYPE void do_exit(long code)
 
 EXPORT_SYMBOL_GPL(do_exit);
 
-NORET_TYPE void complete_and_exit(struct completion *comp, long code)
+void complete_and_exit(struct completion *comp, long code)
 {
        if (comp)
                complete(comp);
@@ -1068,7 +1069,7 @@ SYSCALL_DEFINE1(exit, int, error_code)
  * Take down every thread in the group.  This is called by fatal signals
  * as well as by sys_exit_group (below).
  */
-NORET_TYPE void
+void
 do_group_exit(int exit_code)
 {
        struct signal_struct *sig = current->signal;
@@ -1255,19 +1256,9 @@ static int wait_task_zombie(struct wait_opts *wo, struct task_struct *p)
                spin_lock_irq(&p->real_parent->sighand->siglock);
                psig = p->real_parent->signal;
                sig = p->signal;
-               psig->cutime =
-                       cputime_add(psig->cutime,
-                       cputime_add(tgutime,
-                                   sig->cutime));
-               psig->cstime =
-                       cputime_add(psig->cstime,
-                       cputime_add(tgstime,
-                                   sig->cstime));
-               psig->cgtime =
-                       cputime_add(psig->cgtime,
-                       cputime_add(p->gtime,
-                       cputime_add(sig->gtime,
-                                   sig->cgtime)));
+               psig->cutime += tgutime + sig->cutime;
+               psig->cstime += tgstime + sig->cstime;
+               psig->cgtime += p->gtime + sig->gtime + sig->cgtime;
                psig->cmin_flt +=
                        p->min_flt + sig->min_flt + sig->cmin_flt;
                psig->cmaj_flt +=