4  * SPDX-License-Identifier: BSD-2-Clause
48 enum { OP_READ = 0, OP_WRITE, OP_TRIM, NUM_OPS };
73 	oid[0] = CTL_SYSCTL;  in name2oid()
78 	if (i < 0)  in name2oid()
92 	qoid[0] = CTL_SYSCTL;  in oid2name()
96 	i = sysctl(qoid, nlen + 2, name, &j, 0, 0);  in oid2name()
110 	qoid[0] = CTL_SYSCTL;  in oidfmt()
115 	i = sysctl(qoid, len + 2, buf, &j, 0, 0);  in oidfmt()
119 	return (0);  in oidfmt()
128 	memset(buckets, 0, n * sizeof(buckets[0]));  in split_u64()
129 	for (i = 0; (v = strsep(&str, delim)) != NULL && i < n; i++) {  in split_u64()
146 	for (tot = 0, i = 0; i < nlat; i++)  in pest()
148 	if (tot == 0)  in pest()
149 		return -nanf("");  in pest()
150 	if (tot < (uint64_t)2000 / (1000 - permill))  in pest()
153 	if (samp < lats[0])  in pest()
154 		return baselat * (float)samp / lats[0]; /* linear interpolation 0 and baselat */  in pest()
155 	for (tot = 0, i = 0; samp >= tot && i < nlat; i++)  in pest()
157 	i--;  in pest()
158 	b1 = baselat * (1 << (i - 1));  in pest()
160 	/* Should expoentially interpolate between buckets -- doing linear instead */  in pest()
161 	return b1 + (b2 - b1) * (float)(lats[i] - (tot - samp)) / lats[i];  in pest()
167 	for (int i = 0; i < NUM_OPS; i++)  in op2num()
168 		if (strcmp(op, ops[i]) == 0)  in op2num()
170 	return -1;  in op2num()
176 	struct iosched_stat *isp;  in find_dev()  local
179 	SLIST_FOREACH(isp, &curlist, link) {  in find_dev()
180 		if (strcmp(isp->dev_name, dev) != 0 || isp->unit != unit)  in find_dev()
182 		iosp = &isp->op_stats[op];  in find_dev()
191 	struct iosched_stat *isp;  in alloc_dev()  local
194 	isp = malloc(sizeof(*isp));  in alloc_dev()
195 	if (isp == NULL)  in alloc_dev()
197 	strlcpy(isp->dev_name, dev, sizeof(isp->dev_name));  in alloc_dev()
198 	isp->unit = unit;  in alloc_dev()
199 	SLIST_INSERT_HEAD(&curlist, isp, link);  in alloc_dev()
201 	iosp = &isp->op_stats[op];  in alloc_dev()
216 	iosp->nlats = nlat;  in update_dev()
217 	memcpy(iosp->prev_lats, iosp->lats, iosp->nlats * sizeof(uint64_t));  in update_dev()
218 	memcpy(iosp->lats, lats, iosp->nlats * sizeof(uint64_t));  in update_dev()
219 //	printf("%s%d: %-6s %.3f %.3f %.3f %.3f\r\n",  in update_dev()
234 	qoid[0] = CTL_SYSCTL;  in walk_sysctl()
245 		if (sysctl(qoid, l1, oid, &l2, 0, 0) != 0) {  in walk_sysctl()
247 				return (0);  in walk_sysctl()
258 		    memcmp(oid, base_oid, len * sizeof(int)) != 0)  in walk_sysctl()
259 			return (0);  in walk_sysctl()
275 			if (strcmp(name + l1 - strlen(LATENCY) - 1, LATENCY) != 0)  in walk_sysctl()
277 			if (oidfmt(oid, l2, &kind) != 0)  in walk_sysctl()
282 			if (sysctl(oid, l2, val, &l3, 0, 0) != 0)  in walk_sysctl()
284 			val[l3] = '\0';  in walk_sysctl()
286 			if (split_u64(val, ",", latvals, &nlat) == 0)  in walk_sysctl()
294 			if (op < 0)  in walk_sysctl()
345 		return (0);  in cmdiolat()
361 	baselat = 1e-3;		/* old default */  in initiolat()
362 	if (sysctlbyname(CAM_IOSCHED_BASE, &sbt_base, &len, NULL, 0) == 0)  in initiolat()
363 		baselat = sbt_base * 1e-6;	/* Convert to microseconds */  in initiolat()
386 	struct iosched_stat *isp;  in labeliolat()  local
389 #define DRIVESPERLINE	((getmaxx(wnd) - 1 - INSET) / COLWIDTH)  in labeliolat()
393 	for (int i = 0; i < NUM_OPS; i++) {  in labeliolat()
397 	row = 0;  in labeliolat()
406 	SLIST_FOREACH(isp, &curlist, link) {  in labeliolat()
407 		if (_col + COLWIDTH >= getmaxx(wnd) - 1 - INSET) {  in labeliolat()
410 			if (row > getmaxy(wnd) - 1 - (lpr + 1))  in labeliolat()
420 		snprintf(tmpstr, sizeof(tmpstr), "%s%d", isp->dev_name, isp->unit);  in labeliolat()
421 		mvwaddstr(wnd, row, _col + (COLWIDTH - strlen(tmpstr)) / 2, tmpstr);  in labeliolat()
430 	return (subwin(stdscr, LINES-3-1, 0, MAINWIN_ROW, 0));  in openiolat()
437 		strlcpy(buf, "   -  ", len);  in fmt()
475 	struct iosched_stat *isp;  in showiolat()  local
478 #define DRIVESPERLINE	((getmaxx(wnd) - 1 - INSET) / COLWIDTH)  in showiolat()
482 	for (int i = 0; i < NUM_OPS; i++) {  in showiolat()
486 	row = 0;  in showiolat()
488 	SLIST_FOREACH(isp, &curlist, link) {  in showiolat()
489 		if (_col + COLWIDTH >= getmaxx(wnd) - 1 - INSET) {  in showiolat()
492 			if (row > getmaxy(wnd) - 1 - (lpr + 1))  in showiolat()
496 		for (int i = 0; i < NUM_OPS; i++) {  in showiolat()
501 			if ((flags & (1 << i)) == 0)  in showiolat()
503 			iosp = &isp->op_stats[i];  in showiolat()
504 			nlats = iosp->nlats;  in showiolat()
505 			memset(lats, 0, sizeof(lats));  in showiolat()
506 			for (int j = 0; j < iosp->nlats; j++)  in showiolat()
507 				lats[j] = iosp->lats[j] - iosp->prev_lats[j];  in showiolat()