Merge branch 'akpm-current/current'

[karo-tx-linux.git] / fs / coredump.c

diff --git a/fs/coredump.c b/fs/coredump.c
index a8f75640ac86ec2d29cd55a253b2c3c12c7bac9b..b3c153ca435d24fdbdfcb909228b6b4787bb63f2 100644 (file)
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -32,6 +32,7 @@
 #include <linux/pipe_fs_i.h>
 #include <linux/oom.h>
 #include <linux/compat.h>
+#include <linux/timekeeping.h>
 
 #include <asm/uaccess.h>
 #include <asm/mmu_context.h>
@@ -232,9 +233,10 @@ static int format_corename(struct core_name *cn, struct coredump_params *cprm)
                                break;
                        /* UNIX time of coredump */
                        case 't': {
-                               struct timeval tv;
-                               do_gettimeofday(&tv);
-                               err = cn_printf(cn, "%lu", tv.tv_sec);
+                               time64_t time;
+
+                               time = ktime_get_real_seconds();
+                               err = cn_printf(cn, "%lld", time);
                                break;
                        }
                        /* hostname */
@@ -280,23 +282,24 @@ out:
        return ispipe;
 }
 
-static int zap_process(struct task_struct *start, int exit_code)
+static int zap_process(struct task_struct *start, int exit_code, int flags)
 {
        struct task_struct *t;
        int nr = 0;
 
+       /* ignore all signals except SIGKILL, see prepare_signal() */
+       start->signal->flags = SIGNAL_GROUP_COREDUMP | flags;
        start->signal->group_exit_code = exit_code;
        start->signal->group_stop_count = 0;
 
-       t = start;
-       do {
+       for_each_thread(start, t) {
                task_clear_jobctl_pending(t, JOBCTL_PENDING_MASK);
                if (t != current && t->mm) {
                        sigaddset(&t->pending.signal, SIGKILL);
                        signal_wake_up(t, 1);
                        nr++;
                }
-       } while_each_thread(start, t);
+       }
 
        return nr;
 }
@@ -311,10 +314,8 @@ static int zap_threads(struct task_struct *tsk, struct mm_struct *mm,
        spin_lock_irq(&tsk->sighand->siglock);
        if (!signal_group_exit(tsk->signal)) {
                mm->core_state = core_state;
-               nr = zap_process(tsk, exit_code);
                tsk->signal->group_exit_task = tsk;
-               /* ignore all signals except SIGKILL, see prepare_signal() */
-               tsk->signal->flags = SIGNAL_GROUP_COREDUMP;
+               nr = zap_process(tsk, exit_code, 0);
                clear_tsk_thread_flag(tsk, TIF_SIGPENDING);
        }
        spin_unlock_irq(&tsk->sighand->siglock);
@@ -360,18 +361,18 @@ static int zap_threads(struct task_struct *tsk, struct mm_struct *mm,
                        continue;
                if (g->flags & PF_KTHREAD)
                        continue;
-               p = g;
-               do {
-                       if (p->mm) {
-                               if (unlikely(p->mm == mm)) {
-                                       lock_task_sighand(p, &flags);
-                                       nr += zap_process(p, exit_code);
-                                       p->signal->flags = SIGNAL_GROUP_EXIT;
-                                       unlock_task_sighand(p, &flags);
-                               }
-                               break;
+
+               for_each_thread(g, p) {
+                       if (unlikely(!p->mm))
+                               continue;
+                       if (unlikely(p->mm == mm)) {
+                               lock_task_sighand(p, &flags);
+                               nr += zap_process(p, exit_code,
+                                                       SIGNAL_GROUP_EXIT);
+                               unlock_task_sighand(p, &flags);
                        }
-               } while_each_thread(g, p);
+                       break;
+               }
        }
        rcu_read_unlock();
 done: