1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #pragma ident "%Z%%M% %I% %E% SMI"
28
29 #include "lgrp.h"
30
31 #include <mdb/mdb_modapi.h>
32 #include <sys/cpuvar.h>
33 #include <sys/lgrp.h>
34 #include <sys/cpupart.h>
35
36 int
print_range(int start,int end,int separator)37 print_range(int start, int end, int separator)
38 {
39 int count;
40 char tmp;
41 char *format;
42
43 if (start == end) {
44 /* Unfortunately, mdb_printf returns void */
45 format = separator ? ", %d" : "%d";
46 mdb_printf(format, start);
47 count = mdb_snprintf(&tmp, 1, format, start);
48 } else {
49 format = separator ? ", %d-%d" : "%d-%d";
50 mdb_printf(format, start, end);
51 count = mdb_snprintf(&tmp, 1, format, start, end);
52 }
53
54 return (count);
55 }
56
57 void
print_cpuset_range(ulong_t * cs,int words,int width)58 print_cpuset_range(ulong_t *cs, int words, int width)
59 {
60 int i, j;
61 ulong_t m;
62 int in = 0;
63 int start;
64 int end;
65 int count = 0;
66 int sep = 0;
67
68 for (i = 0; i < words; i++)
69 for (j = 0, m = 1; j < BT_NBIPUL; j++, m <<= 1)
70 if (cs[i] & m) {
71 if (in == 0) {
72 start = i * BT_NBIPUL + j;
73 in = 1;
74 }
75 } else {
76 if (in == 1) {
77 end = i * BT_NBIPUL + j - 1;
78 count += print_range(start, end, sep);
79 sep = 1;
80 in = 0;
81 }
82 }
83 if (in == 1) {
84 end = i * BT_NBIPUL - 1;
85 count += print_range(start, end, sep);
86 }
87
88 /*
89 * print width - count spaces
90 */
91
92 if (width > count)
93 mdb_printf("%*s", width - count, "");
94 }
95 typedef struct lgrp_cpu_walk {
96 uintptr_t lcw_firstcpu;
97 int lcw_cpusleft;
98 } lgrp_cpu_walk_t;
99
100 int
lgrp_cpulist_walk_init(mdb_walk_state_t * wsp)101 lgrp_cpulist_walk_init(mdb_walk_state_t *wsp)
102 {
103 lgrp_cpu_walk_t *lcw;
104 lgrp_t lgrp;
105
106 lcw = mdb_alloc(sizeof (lgrp_cpu_walk_t), UM_SLEEP | UM_GC);
107
108 if (mdb_vread(&lgrp, sizeof (struct lgrp), wsp->walk_addr) == -1) {
109 mdb_warn("couldn't read 'lgrp' at %p", wsp->walk_addr);
110 return (WALK_ERR);
111 }
112
113 lcw->lcw_firstcpu = (uintptr_t)lgrp.lgrp_cpu;
114 lcw->lcw_cpusleft = lgrp.lgrp_cpucnt;
115
116 wsp->walk_data = lcw;
117 wsp->walk_addr = lcw->lcw_firstcpu;
118
119 return (WALK_NEXT);
120 }
121
122 int
lgrp_cpulist_walk_step(mdb_walk_state_t * wsp)123 lgrp_cpulist_walk_step(mdb_walk_state_t *wsp)
124 {
125 lgrp_cpu_walk_t *lcw = (lgrp_cpu_walk_t *)wsp->walk_data;
126 uintptr_t addr = (uintptr_t)wsp->walk_addr;
127 cpu_t cpu;
128 int status;
129
130 if (lcw->lcw_cpusleft-- == 0)
131 return (WALK_DONE);
132
133 if (mdb_vread(&cpu, sizeof (cpu_t), addr) == -1) {
134 mdb_warn("couldn't read 'cpu' at %p", addr);
135 return (WALK_ERR);
136 }
137
138 status = wsp->walk_callback(addr, &cpu, wsp->walk_cbdata);
139
140 if (status != WALK_NEXT)
141 return (status);
142
143 addr = (uintptr_t)cpu.cpu_next_lgrp;
144 wsp->walk_addr = addr;
145
146 if (lcw->lcw_cpusleft == NULL && addr != lcw->lcw_firstcpu) {
147 mdb_warn("number of cpus in lgroup cpu != lgroup cpucnt\n");
148 return (WALK_ERR);
149 }
150
151 return (WALK_NEXT);
152 }
153
154 typedef struct lgrp_cpuwalk_cbdata {
155 uint_t lcc_opt_p;
156 uint_t lcc_count;
157 uint_t lcc_used;
158 uint_t *lcc_psrsetid;
159 ulong_t **lcc_cpuset;
160 uint_t *lcc_cpucnt;
161 int *lcc_loadavg;
162 } lgrp_cpuwalk_cbdata_t;
163
164 /* ARGSUSED */
165 static int
lgrp_cpuwalk_callback(uintptr_t addr,const void * arg,void * cb_data)166 lgrp_cpuwalk_callback(uintptr_t addr, const void *arg, void *cb_data)
167 {
168 cpu_t *cpu = (cpu_t *)arg;
169 lgrp_cpuwalk_cbdata_t *lcc = (lgrp_cpuwalk_cbdata_t *)cb_data;
170 uint_t opt_p = lcc->lcc_opt_p;
171
172 int offset = 0;
173
174 /*
175 * if opt_p is set, we're going to break up info for
176 * each lgrp by processor set.
177 */
178
179 if (opt_p != 0) {
180 cpupartid_t cp_id;
181 cpupart_t cpupart;
182 lpl_t lpl;
183
184
185 if (mdb_vread(&cpupart, sizeof (cpupart_t),
186 (uintptr_t)cpu->cpu_part) == -1) {
187 mdb_warn("cannot read cpu partition at %p",
188 cpu->cpu_part);
189 return (WALK_ERR);
190 }
191 cp_id = cpupart.cp_id;
192
193 for (offset = 0; offset < lcc->lcc_used; offset++)
194 if (cp_id == lcc->lcc_psrsetid[offset]) {
195 goto found;
196 }
197
198 if (offset >= lcc->lcc_count) {
199 mdb_warn(
200 "number of cpu partitions changed during walk");
201 return (WALK_ERR);
202 }
203
204 lcc->lcc_psrsetid[offset] = cp_id;
205 lcc->lcc_used++;
206
207 if (mdb_vread(&lpl, sizeof (lpl_t), (uintptr_t)cpu->cpu_lpl)
208 == -1) {
209 mdb_warn("Cannot read lpl at %p", cpu->cpu_lpl);
210 return (WALK_ERR);
211 }
212
213 lcc->lcc_loadavg[offset] = lpl.lpl_loadavg;
214 }
215
216 found: lcc->lcc_cpucnt[offset]++;
217 BT_SET(lcc->lcc_cpuset[offset], cpu->cpu_id);
218
219 return (WALK_NEXT);
220 }
221
222
223 /* ARGSUSED */
224 int
lgrp(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)225 lgrp(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
226 {
227 lgrp_t lgrp;
228 lgrp_cpuwalk_cbdata_t lcc;
229 int cpusetsize;
230 int lcpu; /* cpus in lgrp */
231 int _ncpu;
232 int opt_p = 0; /* display partition fraction loads */
233 int opt_q = 0; /* display only address. */
234 int i;
235 const char *s_index = NULL, *s_handle = NULL, *s_parent = NULL;
236 uintptr_t index;
237 uintptr_t handle;
238 uintptr_t parent;
239 int filters = 0;
240
241 if (!(flags & DCMD_ADDRSPEC)) {
242 if (mdb_walk_dcmd("lgrptbl", "lgrp", argc, argv) == -1) {
243 mdb_warn("can't walk 'lgrps'");
244 return (DCMD_ERR);
245 }
246 return (DCMD_OK);
247 }
248
249 if (mdb_getopts(argc, argv,
250 'p', MDB_OPT_SETBITS, TRUE, &opt_p,
251 'q', MDB_OPT_SETBITS, TRUE, &opt_q,
252 'P', MDB_OPT_STR, &s_parent,
253 'i', MDB_OPT_STR, &s_index,
254 'h', MDB_OPT_STR, &s_handle,
255 NULL) != argc)
256 return (DCMD_USAGE);
257
258 if (s_index != NULL)
259 filters++;
260 if (s_handle != NULL)
261 filters++;
262 if (s_parent != NULL)
263 filters++;
264
265 if (flags & DCMD_PIPE_OUT)
266 opt_q = B_TRUE;
267
268 if (s_index != NULL)
269 index = mdb_strtoull(s_index);
270
271 if (s_parent != NULL)
272 parent = mdb_strtoull(s_parent);
273
274 if (s_handle != NULL) {
275 if (strcmp(s_handle, "NULL") == 0)
276 handle = (uintptr_t)LGRP_NULL_HANDLE;
277 else if (strcmp(s_handle, "DEFAULT") == 0)
278 handle = (uintptr_t)LGRP_DEFAULT_HANDLE;
279 else
280 handle = mdb_strtoull(s_handle);
281 }
282
283 if (DCMD_HDRSPEC(flags) && !opt_q) {
284 if (opt_p == 0)
285 mdb_printf("%9s %?s %?s %?s %9s %9s\n",
286 "LGRPID",
287 "ADDR",
288 "PARENT",
289 "PLATHAND",
290 "#CPU",
291 "CPUS");
292 else
293 mdb_printf("%9s %9s %9s %9s %9s\n",
294 "LGRPID",
295 "PSRSETID",
296 "LOAD",
297 "#CPU",
298 "CPUS");
299 }
300
301 if (mdb_vread(&lgrp, sizeof (struct lgrp), addr) == -1) {
302 mdb_warn("unable to read 'lgrp' at %p", addr);
303 return (DCMD_ERR);
304 }
305
306 /*
307 * Do not report free lgrp unless specifically asked for.
308 */
309 if ((lgrp.lgrp_id == LGRP_NONE) &&
310 ((s_index == NULL) || ((int)index != LGRP_NONE)))
311 return (DCMD_OK);
312
313 /*
314 * If lgrp doesn't pass filtering criteria, don't print anything and
315 * just return.
316 */
317 if (filters) {
318 if ((s_parent != NULL) &&
319 parent != (uintptr_t)lgrp.lgrp_parent)
320 return (DCMD_OK);
321 if ((s_index != NULL) && index != (uintptr_t)lgrp.lgrp_id)
322 return (DCMD_OK);
323 if ((s_handle != NULL) &&
324 handle != (uintptr_t)lgrp.lgrp_plathand)
325 return (DCMD_OK);
326 }
327
328 if (opt_q) {
329 mdb_printf("%0?p\n", addr);
330 return (DCMD_OK);
331 }
332
333
334 /*
335 * figure out what cpus we've got
336 */
337 if (mdb_readsym(&_ncpu, sizeof (int), "_ncpu") == -1) {
338 mdb_warn("symbol '_ncpu' not found");
339 return (DCMD_ERR);
340 }
341
342 /*
343 * allocate enough space for set of longs to hold cpuid bitfield
344 */
345 if (opt_p)
346 lcpu = lgrp.lgrp_cpucnt;
347 else
348 lcpu = 1;
349
350 cpusetsize = BT_BITOUL(_ncpu) * sizeof (uintptr_t);
351
352 lcc.lcc_used = 0;
353 lcc.lcc_cpucnt = mdb_zalloc(sizeof (uint_t) * lcpu,
354 UM_SLEEP | UM_GC);
355 lcc.lcc_psrsetid = mdb_zalloc(sizeof (uint_t) * lcpu,
356 UM_SLEEP | UM_GC);
357 lcc.lcc_cpuset = mdb_zalloc(sizeof (uintptr_t) * lcpu,
358 UM_SLEEP | UM_GC);
359 for (i = 0; i < lcpu; i++)
360 lcc.lcc_cpuset[i] = mdb_zalloc(cpusetsize,
361 UM_SLEEP | UM_GC);
362 lcc.lcc_loadavg = mdb_zalloc(sizeof (int) * lcpu,
363 UM_SLEEP | UM_GC);
364 lcc.lcc_count = lcpu;
365 lcc.lcc_opt_p = opt_p;
366
367 if (mdb_pwalk("lgrp_cpulist", lgrp_cpuwalk_callback, &lcc,
368 addr) == -1) {
369 mdb_warn("unable to walk lgrp_cpulist");
370 }
371
372 if (opt_p == 0) {
373 if (lgrp.lgrp_plathand == LGRP_NULL_HANDLE) {
374 mdb_printf("%9d %?p %?p %?s %9d ",
375 lgrp.lgrp_id,
376 addr,
377 lgrp.lgrp_parent,
378 "NULL",
379 lgrp.lgrp_cpucnt);
380 } else if (lgrp.lgrp_plathand == LGRP_DEFAULT_HANDLE) {
381 mdb_printf("%9d %?p %?p %?s %9d ",
382 lgrp.lgrp_id,
383 addr,
384 lgrp.lgrp_parent,
385 "DEFAULT",
386 lgrp.lgrp_cpucnt);
387 } else {
388 mdb_printf("%9d %?p %?p %?p %9d ",
389 lgrp.lgrp_id,
390 addr,
391 lgrp.lgrp_parent,
392 lgrp.lgrp_plathand,
393 lgrp.lgrp_cpucnt);
394 }
395
396 if (lgrp.lgrp_cpucnt != 0) {
397 print_cpuset_range(lcc.lcc_cpuset[0],
398 cpusetsize/sizeof (ulong_t), 0);
399 }
400 mdb_printf("\n");
401 } else {
402 for (i = 0; i < lcc.lcc_used; i++) {
403 mdb_printf("%9d %9d %9d %9d ",
404 lgrp.lgrp_id,
405 lcc.lcc_psrsetid[i],
406 lcc.lcc_loadavg[i],
407 lcc.lcc_cpucnt[i]);
408 if (lcc.lcc_cpucnt[i])
409 print_cpuset_range(lcc.lcc_cpuset[i],
410 cpusetsize/sizeof (ulong_t), 0);
411 mdb_printf("\n");
412 }
413 }
414 return (DCMD_OK);
415
416 }
417
418 typedef struct lgrp_walk_data {
419 int lwd_nlgrps;
420 uintptr_t *lwd_lgrp_tbl;
421 int lwd_iter;
422 } lgrp_walk_data_t;
423
424 int
lgrp_walk_init(mdb_walk_state_t * wsp)425 lgrp_walk_init(mdb_walk_state_t *wsp)
426 {
427 lgrp_walk_data_t *lwd;
428 GElf_Sym sym;
429
430 lwd = mdb_zalloc(sizeof (lgrp_walk_data_t), UM_SLEEP | UM_GC);
431
432 if (mdb_readsym(&lwd->lwd_nlgrps, sizeof (int),
433 "lgrp_alloc_max") == -1) {
434 mdb_warn("symbol 'lgrp_alloc_max' not found");
435 return (WALK_ERR);
436 }
437
438 if (lwd->lwd_nlgrps < 0) {
439 mdb_warn("lgrp_alloc_max of bounds (%d)\n", lwd->lwd_nlgrps);
440 return (WALK_ERR);
441 }
442
443 lwd->lwd_nlgrps++;
444
445 if (mdb_lookup_by_name("lgrp_table", &sym) == -1) {
446 mdb_warn("failed to find 'lgrp_table'");
447 return (WALK_ERR);
448 }
449
450 /* Get number of valid entries in lgrp_table */
451 if (sym.st_size < lwd->lwd_nlgrps * sizeof (lgrp_t *)) {
452 mdb_warn("lgrp_table size inconsistent with lgrp_alloc_max");
453 return (WALK_ERR);
454 }
455
456 lwd->lwd_lgrp_tbl = mdb_alloc(sym.st_size, UM_SLEEP | UM_GC);
457
458 if (mdb_readsym(lwd->lwd_lgrp_tbl, lwd->lwd_nlgrps * sizeof (lgrp_t *),
459 "lgrp_table") == -1) {
460 mdb_warn("unable to read lgrp_table");
461 return (WALK_ERR);
462 }
463
464
465 wsp->walk_data = lwd;
466 wsp->walk_addr = lwd->lwd_lgrp_tbl[0];
467
468 return (WALK_NEXT);
469 }
470
471 /*
472 * Common routine for several walkers.
473 * Read lgroup from wsp->walk_addr and call wsp->walk_callback for it.
474 * Normally returns the result of the callback.
475 * Returns WALK_DONE if walk_addr is NULL and WALK_ERR if cannot read the
476 * lgroup.
477 */
478 static int
lgrp_walk_step_common(mdb_walk_state_t * wsp)479 lgrp_walk_step_common(mdb_walk_state_t *wsp)
480 {
481 lgrp_t lgrp;
482
483 if (wsp->walk_addr == NULL)
484 return (WALK_DONE);
485
486 if (mdb_vread(&lgrp, sizeof (lgrp_t), wsp->walk_addr) == -1) {
487 mdb_warn("unable to read lgrp at %p", wsp->walk_addr);
488 return (WALK_ERR);
489 }
490
491 return (wsp->walk_callback(wsp->walk_addr, &lgrp, wsp->walk_cbdata));
492 }
493
494 /*
495 * Get one lgroup from the lgroup table and adjust lwd_iter to point to the next
496 * one.
497 */
498 int
lgrp_walk_step(mdb_walk_state_t * wsp)499 lgrp_walk_step(mdb_walk_state_t *wsp)
500 {
501 lgrp_walk_data_t *lwd = wsp->walk_data;
502 int status = lgrp_walk_step_common(wsp);
503
504 if (status == WALK_NEXT) {
505 lwd->lwd_iter++;
506
507 if (lwd->lwd_iter >= lwd->lwd_nlgrps) {
508 status = WALK_DONE;
509 } else {
510 wsp->walk_addr = lwd->lwd_lgrp_tbl[lwd->lwd_iter];
511
512 if (wsp->walk_addr == NULL) {
513 mdb_warn("NULL lgrp pointer in lgrp_table[%d]",
514 lwd->lwd_iter);
515 return (WALK_ERR);
516 }
517 }
518 }
519
520 return (status);
521 }
522
523 /*
524 * Initialize walker to traverse parents of lgroups. Nothing to do here.
525 */
526 /* ARGSUSED */
527 int
lgrp_parents_walk_init(mdb_walk_state_t * wsp)528 lgrp_parents_walk_init(mdb_walk_state_t *wsp)
529 {
530 return (WALK_NEXT);
531 }
532
533 /*
534 * Call wsp callback on current lgroup in wsp and replace the lgroup with its
535 * parent.
536 */
537 int
lgrp_parents_walk_step(mdb_walk_state_t * wsp)538 lgrp_parents_walk_step(mdb_walk_state_t *wsp)
539 {
540 lgrp_t lgrp;
541 int status;
542
543 if (wsp->walk_addr == NULL)
544 return (WALK_DONE);
545
546 if (mdb_vread(&lgrp, sizeof (struct lgrp), wsp->walk_addr) == -1) {
547 mdb_warn("couldn't read 'lgrp' at %p", wsp->walk_addr);
548 return (WALK_ERR);
549 }
550
551 status = wsp->walk_callback(wsp->walk_addr, &lgrp, wsp->walk_cbdata);
552
553 if (status == WALK_NEXT)
554 wsp->walk_addr = (uintptr_t)lgrp.lgrp_parent;
555
556 return (status);
557 }
558
559 /*
560 * Given the set return the ID of the first member of the set.
561 * Returns LGRP_NONE if the set has no elements smaller than max_lgrp.
562 */
563 static lgrp_id_t
lgrp_set_get_first(klgrpset_t set,int max_lgrp)564 lgrp_set_get_first(klgrpset_t set, int max_lgrp)
565 {
566 lgrp_id_t id;
567 klgrpset_t bit = 1;
568
569 if (set == (klgrpset_t)0)
570 return (LGRP_NONE);
571
572 for (id = 0; (id < max_lgrp) && !(set & bit); id++, bit <<= 1)
573 ;
574
575 if (id >= max_lgrp)
576 id = LGRP_NONE;
577
578 return (id);
579 }
580
581 /*
582 * lgrp_set_walk_data is used to walk lgroups specified by a set.
583 * On every iteration one element is removed from the set.
584 */
585 typedef struct lgrp_set_walk_data {
586 int lswd_nlgrps; /* Number of lgroups */
587 uintptr_t *lwsd_lgrp_tbl; /* Full lgroup table */
588 klgrpset_t lwsd_set; /* Set of lgroups to walk */
589 } lgrp_set_walk_data_t;
590
591 /*
592 * Initialize iterator for walkers over a set of lgroups
593 */
594 static int
lgrp_set_walk_init(mdb_walk_state_t * wsp,klgrpset_t set)595 lgrp_set_walk_init(mdb_walk_state_t *wsp, klgrpset_t set)
596 {
597 lgrp_set_walk_data_t *lwsd;
598 int nlgrps;
599 lgrp_id_t id;
600 GElf_Sym sym;
601
602 /* Nothing to do if the set is empty */
603 if (set == (klgrpset_t)0)
604 return (WALK_DONE);
605
606 lwsd = mdb_zalloc(sizeof (lgrp_set_walk_data_t), UM_SLEEP | UM_GC);
607
608 /* Get the total number of lgroups */
609 if (mdb_readsym(&nlgrps, sizeof (int), "lgrp_alloc_max") == -1) {
610 mdb_warn("symbol 'lgrp_alloc_max' not found");
611 return (WALK_ERR);
612 }
613
614 if (nlgrps < 0) {
615 mdb_warn("lgrp_alloc_max of bounds (%d)\n", nlgrps);
616 return (WALK_ERR);
617 }
618
619 nlgrps++;
620
621 /* Find ID of the first lgroup in the set */
622 if ((id = lgrp_set_get_first(set, nlgrps)) == LGRP_NONE) {
623 mdb_warn("No set elements within %d lgroups\n", nlgrps);
624 return (WALK_ERR);
625 }
626
627 /* Read lgroup_table and copy it to lwsd_lgrp_tbl */
628 if (mdb_lookup_by_name("lgrp_table", &sym) == -1) {
629 mdb_warn("failed to find 'lgrp_table'");
630 return (WALK_ERR);
631 }
632
633 /* Get number of valid entries in lgrp_table */
634 if (sym.st_size < nlgrps * sizeof (lgrp_t *)) {
635 mdb_warn("lgrp_table size inconsistent with lgrp_alloc_max");
636 return (WALK_ERR);
637 }
638
639 lwsd->lwsd_lgrp_tbl = mdb_alloc(sym.st_size, UM_SLEEP | UM_GC);
640 lwsd->lswd_nlgrps = nlgrps;
641
642 if (mdb_readsym(lwsd->lwsd_lgrp_tbl, nlgrps * sizeof (lgrp_t *),
643 "lgrp_table") == -1) {
644 mdb_warn("unable to read lgrp_table");
645 return (WALK_ERR);
646 }
647
648 wsp->walk_data = lwsd;
649
650 /* Save the first lgroup from the set and remove it from the set */
651 wsp->walk_addr = lwsd->lwsd_lgrp_tbl[id];
652 lwsd->lwsd_set = set & ~(1 << id);
653
654 return (WALK_NEXT);
655 }
656
657 /*
658 * Get current lgroup and advance the lgroup to the next one in the lwsd_set.
659 */
660 int
lgrp_set_walk_step(mdb_walk_state_t * wsp)661 lgrp_set_walk_step(mdb_walk_state_t *wsp)
662 {
663 lgrp_id_t id = 0;
664 lgrp_set_walk_data_t *lwsd = wsp->walk_data;
665 int status = lgrp_walk_step_common(wsp);
666
667 if (status == WALK_NEXT) {
668 id = lgrp_set_get_first(lwsd->lwsd_set, lwsd->lswd_nlgrps);
669 if (id == LGRP_NONE) {
670 status = WALK_DONE;
671 } else {
672 /* Move to the next lgroup in the set */
673 wsp->walk_addr = lwsd->lwsd_lgrp_tbl[id];
674
675 /* Remove id from the set */
676 lwsd->lwsd_set = lwsd->lwsd_set & ~(1 << id);
677 }
678 }
679
680 return (status);
681 }
682
683 /*
684 * Initialize resource walker for a given lgroup and resource. The lgroup
685 * address is specified in walk_addr.
686 */
687 static int
lgrp_rsrc_walk_init(mdb_walk_state_t * wsp,int resource)688 lgrp_rsrc_walk_init(mdb_walk_state_t *wsp, int resource)
689 {
690 lgrp_t lgrp;
691
692 if (mdb_vread(&lgrp, sizeof (struct lgrp), wsp->walk_addr) == -1) {
693 mdb_warn("couldn't read 'lgrp' at %p", wsp->walk_addr);
694 return (WALK_ERR);
695 }
696
697 return (lgrp_set_walk_init(wsp, lgrp.lgrp_set[resource]));
698 }
699
700 /*
701 * Initialize CPU resource walker
702 */
703 int
lgrp_rsrc_cpu_walk_init(mdb_walk_state_t * wsp)704 lgrp_rsrc_cpu_walk_init(mdb_walk_state_t *wsp)
705 {
706 return (lgrp_rsrc_walk_init(wsp, LGRP_RSRC_CPU));
707 }
708
709 /*
710 * Initialize memory resource walker
711 */
712 int
lgrp_rsrc_mem_walk_init(mdb_walk_state_t * wsp)713 lgrp_rsrc_mem_walk_init(mdb_walk_state_t *wsp)
714 {
715 return (lgrp_rsrc_walk_init(wsp, LGRP_RSRC_MEM));
716 }
717
718 /*
719 * Display bitmap as a list of integers
720 */
721 /* ARGSUSED */
722 int
lgrp_set(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)723 lgrp_set(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
724 {
725 uint64_t set = (uint64_t)addr;
726 uint64_t mask = 1;
727 int i = 0;
728
729 if (!(flags & DCMD_ADDRSPEC)) {
730 return (DCMD_USAGE);
731 }
732
733 if (set == 0)
734 return (DCMD_OK);
735
736 for (; set != (uint64_t)0; i++, mask <<= 1) {
737 if (set & mask) {
738 mdb_printf("%d ", i);
739 set &= ~mask;
740 }
741 }
742 mdb_printf("\n");
743 return (DCMD_OK);
744 }
745