freezer: kill PF_FREEZING

With the previous changes, there's no meaningful difference between
PF_FREEZING and PF_FROZEN.  Remove PF_FREEZING and use PF_FROZEN
instead in task_contributes_to_load().

Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 68daf4f..d12bd03 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -220,7 +220,7 @@ extern char ___assert_task_state[1 - 2*!!(
                        ((task->state & (__TASK_STOPPED | __TASK_TRACED)) != 0)
 #define task_contributes_to_load(task) \
                                ((task->state & TASK_UNINTERRUPTIBLE) != 0 && \
-                                (task->flags & PF_FREEZING) == 0)
+                                (task->flags & PF_FROZEN) == 0)
 
 #define __set_task_state(tsk, state_value)             \
        do { (tsk)->state = (state_value); } while (0)
@@ -1773,7 +1773,6 @@ extern void thread_group_times(struct task_struct *p, cputime_t *ut, cputime_t *
 #define PF_MEMALLOC    0x00000800      /* Allocating memory */
 #define PF_NPROC_EXCEEDED 0x00001000   /* set_user noticed that RLIMIT_NPROC was exceeded */
 #define PF_USED_MATH   0x00002000      /* if unset the fpu must be initialized before use */
-#define PF_FREEZING    0x00004000      /* freeze in progress. do not account to load */
 #define PF_NOFREEZE    0x00008000      /* this thread should not be frozen */
 #define PF_FROZEN      0x00010000      /* frozen for system suspend */
 #define PF_FSTRANS     0x00020000      /* inside a filesystem transaction */

diff --git a/kernel/freezer.c b/kernel/freezer.c
index a257ecd..b8b5621 100644 (file)
--- a/kernel/freezer.c
+++ b/kernel/freezer.c
@@ -44,9 +44,6 @@ repeat:
        recalc_sigpending(); /* We sent fake signal, clean it up */
        spin_unlock_irq(&current->sighand->siglock);
 
-       /* prevent accounting of that task to load */
-       current->flags |= PF_FREEZING;
-
        for (;;) {
                set_current_state(TASK_UNINTERRUPTIBLE);
                if (!freezing(current) ||
@@ -56,9 +53,6 @@ repeat:
                schedule();
        }
 
-       /* Remove the accounting blocker */
-       current->flags &= ~PF_FREEZING;
-
        /* leave FROZEN */
        spin_lock_irq(&freezer_lock);
        if (freezing(current))