PF_FROZEN 15 include/linux/freezer.h return p->flags & PF_FROZEN; PF_FROZEN 55 include/linux/freezer.h p->flags &= ~PF_FROZEN; PF_FROZEN 37 kernel/power/process.c current->flags |= PF_FROZEN; PF_FROZEN 180 kernel/softlockup.c if (t->flags & PF_FROZEN)