pf_purge_thread   869 net/pf.c       		tsleep(pf_purge_thread, PWAIT, "pftm", 1 * hz);
pf_purge_thread   219 net/pf_ioctl.c 	if (kthread_create(pf_purge_thread, NULL, NULL, "pfpurge"))
pf_purge_thread  1843 net/pf_ioctl.c 			wakeup(pf_purge_thread);
pf_purge_thread  1570 net/pfvar.h    extern void			 pf_purge_thread(void *);