diff options
Diffstat (limited to 'kernel/freezer.c')
| -rw-r--r-- | kernel/freezer.c | 32 |
1 files changed, 11 insertions, 21 deletions
diff --git a/kernel/freezer.c b/kernel/freezer.c index b1e7a7b3d2cd..c3496c6a91b2 100644 --- a/kernel/freezer.c +++ b/kernel/freezer.c @@ -52,39 +52,29 @@ bool __refrigerator(bool check_kthr_stop) /* Hmm, should we be allowed to suspend when there are realtime processes around? */ bool was_frozen = false; - long save; + long save = current->state; - /* - * No point in checking freezing() again - the caller already did. - * Proceed to enter FROZEN. - */ - spin_lock_irq(&freezer_lock); -repeat: - current->flags |= PF_FROZEN; - spin_unlock_irq(&freezer_lock); - - save = current->state; pr_debug("%s entered refrigerator\n", current->comm); - spin_lock_irq(¤t->sighand->siglock); - recalc_sigpending(); /* We sent fake signal, clean it up */ - spin_unlock_irq(¤t->sighand->siglock); - for (;;) { set_current_state(TASK_UNINTERRUPTIBLE); + + spin_lock_irq(&freezer_lock); + current->flags |= PF_FROZEN; if (!freezing(current) || (check_kthr_stop && kthread_should_stop())) + current->flags &= ~PF_FROZEN; + spin_unlock_irq(&freezer_lock); + + if (!(current->flags & PF_FROZEN)) break; was_frozen = true; schedule(); } - /* leave FROZEN */ - spin_lock_irq(&freezer_lock); - if (freezing(current)) - goto repeat; - current->flags &= ~PF_FROZEN; - spin_unlock_irq(&freezer_lock); + spin_lock_irq(¤t->sighand->siglock); + recalc_sigpending(); /* We sent fake signal, clean it up */ + spin_unlock_irq(¤t->sighand->siglock); pr_debug("%s left refrigerator\n", current->comm); |