80 	hrtime_t last_delta;		/* previous time delta */
81 	hrtime_t last_delta2;		/* previous 2nd order time delta */
582  * with an entropy estimate.  The first, second, and third order delta is
583  * calculated to determine the minimum delta value.  The number of bits
584  * present in this minimum delta value is the entropy estimate.  This
663 	hrtime_t ts1, ts2, diff, delta, delta2, delta3;  in physmem_ent_gen()  local
769 		 * measurement. The delta of the time values  in physmem_ent_gen()
772 		 * delta is used to estimate how much entropy  in physmem_ent_gen()
776 		delta = diff - entsrc->last_diff;  in physmem_ent_gen()
777 		if (delta < 0)  in physmem_ent_gen()
778 			delta = -delta;  in physmem_ent_gen()
779 		delta2 = delta - entsrc->last_delta;  in physmem_ent_gen()
786 		entsrc->last_delta = delta;  in physmem_ent_gen()
789 		if (delta > delta2)  in physmem_ent_gen()
790 			delta = delta2;  in physmem_ent_gen()
791 		if (delta > delta3)  in physmem_ent_gen()
792 			delta = delta3;  in physmem_ent_gen()
794 		while (delta >>= 1)  in physmem_ent_gen()
851 rnd_dr_callback_post_add(void *arg, pgcnt_t delta)  in rnd_dr_callback_post_add()  argument
860 rnd_dr_callback_pre_del(void *arg, pgcnt_t delta)  in rnd_dr_callback_pre_del()  argument
868 rnd_dr_callback_post_del(void *arg, pgcnt_t delta, int cancelled)  in rnd_dr_callback_post_del()  argument