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 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 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 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 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 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 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 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