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, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2005 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
30 #include <mdb/mdb_param.h>
31 #include <mdb/mdb_modapi.h>
32 #include <mdb/mdb_ks.h>
33
34 #include "lgrp.h"
35 #include "cpupart_mdb.h"
36
37 #include <sys/cpuvar.h>
38 #include <sys/cpupart.h>
39
40 /* ARGSUSED */
41 static int
cpupart_cpulist_callback(uintptr_t addr,const void * arg,void * cb_data)42 cpupart_cpulist_callback(uintptr_t addr, const void *arg, void *cb_data)
43 {
44 cpu_t *cpu = (cpu_t *)arg;
45
46 ulong_t *cpuset = cb_data;
47
48 BT_SET(cpuset, cpu->cpu_id);
49
50 return (WALK_NEXT);
51 }
52
53 #define CPUPART_IDWIDTH 3
54
55 #ifdef _LP64
56 #define CPUPART_CPUWIDTH 21
57 #if defined(__amd64)
58 #define CPUPART_TWIDTH 16
59 #else
60 #define CPUPART_TWIDTH 11
61 #endif
62 #else
63 #define CPUPART_CPUWIDTH 13
64 #define CPUPART_TWIDTH 8
65 #endif
66
67
68 #define CPUPART_THRDELT (CPUPART_IDWIDTH + CPUPART_CPUWIDTH)
69 #define CPUPART_INDENT mdb_printf("%*s", CPUPART_THRDELT, "")
70
71 int
cpupart_disp_threads(disp_t * disp)72 cpupart_disp_threads(disp_t *disp)
73 {
74 dispq_t *dq;
75 int i, npri = disp->disp_npri;
76 proc_t p;
77 kthread_t t;
78
79 dq = mdb_alloc(sizeof (dispq_t) * npri, UM_SLEEP | UM_GC);
80
81 if (mdb_vread(dq, sizeof (dispq_t) * npri,
82 (uintptr_t)disp->disp_q) == -1) {
83 mdb_warn("failed to read dispq_t at %p", disp->disp_q);
84 return (DCMD_ERR);
85 }
86
87 CPUPART_INDENT;
88 mdb_printf("|\n");
89 CPUPART_INDENT;
90 mdb_printf("+--> %3s %-*s %s\n", "PRI", CPUPART_TWIDTH, "THREAD",
91 "PROC");
92
93 for (i = npri - 1; i >= 0; i--) {
94 uintptr_t taddr = (uintptr_t)dq[i].dq_first;
95
96 while (taddr != NULL) {
97 if (mdb_vread(&t, sizeof (t), taddr) == -1) {
98 mdb_warn("failed to read kthread_t at %p",
99 taddr);
100 return (DCMD_ERR);
101 }
102
103 if (mdb_vread(&p, sizeof (p),
104 (uintptr_t)t.t_procp) == -1) {
105 mdb_warn("failed to read proc_t at %p",
106 t.t_procp);
107 return (DCMD_ERR);
108 }
109
110 CPUPART_INDENT;
111 mdb_printf("%9d %0*p %s\n", t.t_pri, CPUPART_TWIDTH,
112 taddr, p.p_user.u_comm);
113
114 taddr = (uintptr_t)t.t_link;
115 }
116 }
117
118 return (DCMD_OK);
119 }
120
121 /* ARGSUSED */
122 int
cpupart(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)123 cpupart(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
124 {
125 cpupart_t cpupart;
126 int cpusetsize;
127 int _ncpu;
128 ulong_t *cpuset;
129 uint_t verbose = FALSE;
130
131 if (mdb_getopts(argc, argv,
132 'v', MDB_OPT_SETBITS, TRUE, &verbose, NULL) != argc)
133 return (DCMD_USAGE);
134
135 if (!(flags & DCMD_ADDRSPEC)) {
136 if (mdb_walk_dcmd("cpupart_walk", "cpupart", argc, argv)
137 == -1) {
138 mdb_warn("can't walk 'cpupart'");
139 return (DCMD_ERR);
140 }
141 return (DCMD_OK);
142 }
143
144 if (DCMD_HDRSPEC(flags)) {
145 mdb_printf("%3s %?s %4s %4s %4s\n",
146 "ID",
147 "ADDR",
148 "NRUN",
149 "#CPU",
150 "CPUS");
151 }
152
153 if (mdb_vread(&cpupart, sizeof (cpupart_t), addr) == -1) {
154 mdb_warn("unable to read 'cpupart_t' at %p", addr);
155 return (DCMD_ERR);
156 }
157
158 mdb_printf("%3d %?p %4d %4d ",
159 cpupart.cp_id,
160 addr,
161 cpupart.cp_kp_queue.disp_nrunnable,
162 cpupart.cp_ncpus);
163
164 if (cpupart.cp_ncpus == 0) {
165 mdb_printf("\n");
166 return (DCMD_OK);
167 }
168
169 /*
170 * figure out what cpus we've got
171 */
172 if (mdb_readsym(&_ncpu, sizeof (int), "_ncpu") == -1) {
173 mdb_warn("symbol '_ncpu' not found");
174 return (DCMD_ERR);
175 }
176
177 /*
178 * allocate enough space for set of longs to hold cpuid bitfield
179 */
180
181 cpusetsize = BT_BITOUL(_ncpu) * sizeof (ulong_t);
182 cpuset = mdb_zalloc(cpusetsize, UM_SLEEP | UM_GC);
183
184 if (mdb_pwalk("cpupart_cpulist", cpupart_cpulist_callback, cpuset,
185 addr) == -1) {
186 mdb_warn("unable to walk cpupart_cpulist");
187 return (DCMD_ERR);
188 }
189
190 print_cpuset_range(cpuset, cpusetsize/sizeof (ulong_t), 0);
191
192 mdb_printf("\n");
193 /*
194 * If there are any threads on kp queue and -v is specified
195 */
196 if (verbose && cpupart.cp_kp_queue.disp_nrunnable) {
197 if (cpupart_disp_threads(&cpupart.cp_kp_queue) != DCMD_OK)
198 return (DCMD_ERR);
199 }
200
201 return (DCMD_OK);
202 }
203
204 typedef struct cpupart_cpulist_walk {
205 uintptr_t ccw_firstcpu;
206 int ccw_cpusleft;
207 } cpupart_cpulist_walk_t;
208
209 int
cpupart_cpulist_walk_init(mdb_walk_state_t * wsp)210 cpupart_cpulist_walk_init(mdb_walk_state_t *wsp)
211 {
212 cpupart_cpulist_walk_t *ccw;
213 cpupart_t cpupart;
214
215 ccw = mdb_alloc(sizeof (cpupart_cpulist_walk_t), UM_SLEEP | UM_GC);
216
217 if (mdb_vread(&cpupart, sizeof (cpupart_t), wsp->walk_addr) == -1) {
218 mdb_warn("couldn't read 'cpupart' at %p", wsp->walk_addr);
219 return (WALK_ERR);
220 }
221
222 ccw->ccw_firstcpu = (uintptr_t)cpupart.cp_cpulist;
223 ccw->ccw_cpusleft = cpupart.cp_ncpus;
224
225 wsp->walk_data = ccw;
226 wsp->walk_addr = ccw->ccw_firstcpu;
227
228 return (WALK_NEXT);
229 }
230
231 int
cpupart_cpulist_walk_step(mdb_walk_state_t * wsp)232 cpupart_cpulist_walk_step(mdb_walk_state_t *wsp)
233 {
234 cpupart_cpulist_walk_t *ccw = (cpupart_cpulist_walk_t *)
235 wsp->walk_data;
236 uintptr_t addr = wsp->walk_addr;
237 cpu_t cpu;
238 int status;
239
240 if (mdb_vread(&cpu, sizeof (cpu_t), addr) == -1) {
241 mdb_warn("couldn't read 'cpupart' at %p", addr);
242 return (WALK_ERR);
243 }
244
245 status = wsp->walk_callback(addr, &cpu, wsp->walk_cbdata);
246
247 if (status != WALK_NEXT)
248 return (status);
249
250 addr = (uintptr_t)cpu.cpu_next_part;
251 wsp->walk_addr = addr;
252
253 ccw->ccw_cpusleft--;
254
255 if (ccw->ccw_cpusleft < 0) {
256 mdb_warn("cpu count doesn't match cpupart list");
257 return (WALK_ERR);
258 }
259
260 if (ccw->ccw_firstcpu == addr) {
261 if (ccw->ccw_cpusleft != 0) {
262 mdb_warn("cpu count doesn't match cpupart list");
263 return (WALK_ERR);
264 }
265 return (WALK_DONE);
266 }
267
268 return (WALK_NEXT);
269 }
270
271 int
cpupart_walk_init(mdb_walk_state_t * wsp)272 cpupart_walk_init(mdb_walk_state_t *wsp)
273 {
274 GElf_Sym sym;
275 uintptr_t addr;
276
277 if (mdb_lookup_by_name("cp_default", &sym) == -1) {
278 mdb_warn("failed to find 'cp_default'\n");
279 return (WALK_ERR);
280 }
281
282 addr = (uintptr_t)sym.st_value;
283 wsp->walk_data = (void *)addr;
284 wsp->walk_addr = addr;
285
286 return (WALK_NEXT);
287 }
288
289 int
cpupart_walk_step(mdb_walk_state_t * wsp)290 cpupart_walk_step(mdb_walk_state_t *wsp)
291 {
292 cpupart_t cpupart;
293 int status;
294
295 if (mdb_vread(&cpupart, sizeof (cpupart_t),
296 wsp->walk_addr) == -1) {
297 mdb_warn("unable to read cpupart at %p",
298 wsp->walk_addr);
299 return (WALK_ERR);
300 }
301
302 status = wsp->walk_callback(wsp->walk_addr, &cpupart,
303 wsp->walk_cbdata);
304
305 if (status != WALK_NEXT)
306 return (status);
307
308 wsp->walk_addr = (uintptr_t)cpupart.cp_next;
309
310 if (wsp->walk_addr == (uintptr_t)wsp->walk_data)
311 return (WALK_DONE);
312
313 return (WALK_NEXT);
314
315 }
316