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 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 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 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 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 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 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 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