lib/libdevstat/devstat.c

52 compute_stats(struct devstat *current, struct devstat *previous,
215 	 * Get the current generation number.
235  * Get the current devstat version.  The return value of this function
249 	 * Get the current devstat version.
324  * Get the current list of devices and statistics, and the current
367 			 * The kern.devstat.all sysctl returns the current
457 	 * If the generation has changed, and if the current number of
501  * - current number of devices selected (num_selected)
505  * - current devstat generation (current_generation)
506  * - current list of devices and statistics (devices)
507  * - number of devices in the current device list (numdevs)
510  *   - The matching code pays attention to the current selection mode.  So
530  *        current selected, as only mode would, but it will also not
542  * - the selection generation may be changed to match the current generation
624 	 * We want to make a backup of the current selection list if
742 			 * Determine whether or not the current device
912 	 * made a backup of the selection list, compare it to the current
940 			 * the current array is the same as the device at
952 			 * the current array isn't the same device as the
962 				 * in the current array.  If the selection
1073 	/* Make sure the current entry is clear */
1163  * that is "current".  Everything else is optional.  The caller passes in
1171 compute_stats(struct devstat *current, struct devstat *previous,
1178 	return(devstat_compute_statistics(current, previous, etime,
1217 	(current->field[(index)] - (previous ? previous->field[(index)] : 0))
1220 	devstat_compute_etime(&current->field,  	\
1224 devstat_compute_statistics(struct devstat *current, struct devstat *previous,
1242 	 * current is the only mandatory field.
1244 	if (current == NULL) {
1246 			 "%s: current stats structure was NULL", __func__);
1267 	if (current->block_size > 0) {
1268 		totalblocks /= current->block_size;
1269 		totalblocksread /= current->block_size;
1270 		totalblockswrite /= current->block_size;
1271 		totalblocksfree /= current->block_size;
1542 			*destu64 = current->start_count - current->end_count;