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