| 1 | /* |
| 2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; either version 2 |
| 7 | * of the License, or (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 17 | */ |
| 18 | |
| 19 | #define _GNU_SOURCE |
| 20 | #include <popt.h> |
| 21 | #include <stdio.h> |
| 22 | #include <stdlib.h> |
| 23 | #include <string.h> |
| 24 | #include <sys/stat.h> |
| 25 | #include <sys/types.h> |
| 26 | #include <unistd.h> |
| 27 | |
| 28 | #include "cmd.h" |
| 29 | #include "conf.h" |
| 30 | #include "utils.h" |
| 31 | |
| 32 | static char *opt_event_name; |
| 33 | static char *opt_channel_name; |
| 34 | static char *opt_perf_name; |
| 35 | static char *opt_session_name; |
| 36 | static int *opt_kernel; |
| 37 | static int opt_pid_all; |
| 38 | static int opt_userspace; |
| 39 | static int opt_perf_type; |
| 40 | static int opt_perf_id; |
| 41 | static pid_t opt_pid; |
| 42 | |
| 43 | enum { |
| 44 | OPT_HELP = 1, |
| 45 | OPT_TYPE, |
| 46 | }; |
| 47 | |
| 48 | static struct poptOption long_options[] = { |
| 49 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ |
| 50 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, |
| 51 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, |
| 52 | {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0}, |
| 53 | {"event", 'e', POPT_ARG_STRING, &opt_event_name, 0, 0, 0}, |
| 54 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, |
| 55 | {"userspace", 'u', POPT_ARG_VAL, &opt_userspace, 1, 0, 0}, |
| 56 | {"all", 0, POPT_ARG_VAL, &opt_pid_all, 1, 0, 0}, |
| 57 | {"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0}, |
| 58 | {"type", 't', POPT_ARG_INT, 0, OPT_TYPE, 0, 0}, |
| 59 | {"perf-name", 0, POPT_ARG_STRING, &opt_perf_name, 0, 0, 0}, |
| 60 | {"perf-type", 0, POPT_ARG_INT, &opt_perf_type, 0, 0, 0}, |
| 61 | {"perf-id", 0, POPT_ARG_INT, &opt_perf_id, 0, 0, 0}, |
| 62 | {0, 0, 0, 0, 0, 0, 0} |
| 63 | }; |
| 64 | |
| 65 | /* |
| 66 | * usage |
| 67 | */ |
| 68 | static void usage(FILE *ofp) |
| 69 | { |
| 70 | fprintf(ofp, "usage: lttng add-context [options] [context_options]\n"); |
| 71 | fprintf(ofp, "\n"); |
| 72 | fprintf(ofp, "Options:\n"); |
| 73 | fprintf(ofp, " -h, --help Show this help\n"); |
| 74 | fprintf(ofp, " -s, --session Apply on session name\n"); |
| 75 | fprintf(ofp, " -c, --channel NAME Apply on channel\n"); |
| 76 | fprintf(ofp, " -e, --event NAME Apply on event\n"); |
| 77 | fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n"); |
| 78 | fprintf(ofp, " -u, --userspace Apply for the user-space tracer\n"); |
| 79 | fprintf(ofp, " --all If -u, apply on all traceable apps\n"); |
| 80 | fprintf(ofp, " -p, --pid PID If -u, apply on a specific PID\n"); |
| 81 | fprintf(ofp, " -t, --type TYPE Context type. TYPE must be a numerical value:\n"); |
| 82 | fprintf(ofp, " KERNEL_CONTEXT_PID = 0\n"); |
| 83 | fprintf(ofp, " KERNEL_CONTEXT_PERF_COUNTER = 1\n"); |
| 84 | fprintf(ofp, " KERNEL_CONTEXT_COMM = 2\n"); |
| 85 | fprintf(ofp, " KERNEL_CONTEXT_PRIO = 3\n"); |
| 86 | fprintf(ofp, " KERNEL_CONTEXT_NICE = 4\n"); |
| 87 | fprintf(ofp, " KERNEL_CONTEXT_VPID = 5\n"); |
| 88 | fprintf(ofp, " KERNEL_CONTEXT_TID = 6\n"); |
| 89 | fprintf(ofp, " KERNEL_CONTEXT_VTID = 7\n"); |
| 90 | fprintf(ofp, " KERNEL_CONTEXT_PPID = 8\n"); |
| 91 | fprintf(ofp, " KERNEL_CONTEXT_VPPID = 9\n"); |
| 92 | fprintf(ofp, "\n"); |
| 93 | fprintf(ofp, "Context options:\n"); |
| 94 | fprintf(ofp, " --perf-name NAME Perf event name\n"); |
| 95 | fprintf(ofp, " --perf-type TYPE Perf event type. TYPE must be a numeric value:\n"); |
| 96 | fprintf(ofp, " PERF_TYPE_HARDWARE = 0\n"); |
| 97 | fprintf(ofp, " PERF_TYPE_SOFTWARE = 1\n"); |
| 98 | fprintf(ofp, " --perf-id ID Perf event id. ID must be a numeric value:\n"); |
| 99 | fprintf(ofp, " Hardware IDs (0):\n"); |
| 100 | fprintf(ofp, " PERF_COUNT_HW_CPU_CYCLES = 0\n"); |
| 101 | fprintf(ofp, " PERF_COUNT_HW_INSTRUCTIONS = 1\n"); |
| 102 | fprintf(ofp, " PERF_COUNT_HW_CACHE_REFERENCES = 2\n"); |
| 103 | fprintf(ofp, " PERF_COUNT_HW_CACHE_MISSES = 3\n"); |
| 104 | fprintf(ofp, " PERF_COUNT_HW_BRANCH_INSTRUCTIONS = 4\n"); |
| 105 | fprintf(ofp, " PERF_COUNT_HW_BRANCH_MISSES = 5\n"); |
| 106 | fprintf(ofp, " PERF_COUNT_HW_BUS_CYCLES = 6\n"); |
| 107 | fprintf(ofp, " Software IDs (1):\n"); |
| 108 | fprintf(ofp, " PERF_COUNT_SW_CPU_CLOCK = 0\n"); |
| 109 | fprintf(ofp, " PERF_COUNT_SW_TASK_CLOCK = 1\n"); |
| 110 | fprintf(ofp, " PERF_COUNT_SW_PAGE_FAULTS = 2\n"); |
| 111 | fprintf(ofp, " PERF_COUNT_SW_CONTEXT_SWITCHES = 3\n"); |
| 112 | fprintf(ofp, " PERF_COUNT_SW_CPU_MIGRATIONS = 4\n"); |
| 113 | fprintf(ofp, " PERF_COUNT_SW_PAGE_FAULTS_MIN = 5\n"); |
| 114 | fprintf(ofp, " PERF_COUNT_SW_PAGE_FAULTS_MAJ = 6\n"); |
| 115 | fprintf(ofp, "\n"); |
| 116 | } |
| 117 | |
| 118 | /* |
| 119 | * add_context |
| 120 | * |
| 121 | * Add context to channel or event. |
| 122 | */ |
| 123 | static int add_context(int type) |
| 124 | { |
| 125 | int ret = CMD_SUCCESS; |
| 126 | struct lttng_kernel_context context; |
| 127 | |
| 128 | if (set_session_name(opt_session_name) < 0) { |
| 129 | ret = CMD_ERROR; |
| 130 | goto error; |
| 131 | } |
| 132 | |
| 133 | context.ctx = type; |
| 134 | if (type == LTTNG_KERNEL_CONTEXT_PERF_COUNTER) { |
| 135 | context.u.perf_counter.type = opt_perf_type; |
| 136 | context.u.perf_counter.config = opt_perf_id; |
| 137 | strncpy(context.u.perf_counter.name, opt_perf_name, |
| 138 | LTTNG_SYMBOL_NAME_LEN); |
| 139 | } |
| 140 | |
| 141 | if (opt_kernel) { |
| 142 | DBG("Adding kernel context"); |
| 143 | ret = lttng_kernel_add_context(&context, opt_event_name, opt_channel_name); |
| 144 | if (ret < 0) { |
| 145 | goto error; |
| 146 | } else { |
| 147 | MSG("Kernel context added"); |
| 148 | } |
| 149 | } else if (opt_userspace) { /* User-space tracer action */ |
| 150 | /* |
| 151 | * TODO: Waiting on lttng UST 2.0 |
| 152 | */ |
| 153 | if (opt_pid_all) { |
| 154 | } else if (opt_pid != 0) { |
| 155 | } |
| 156 | ret = CMD_NOT_IMPLEMENTED; |
| 157 | goto error; |
| 158 | } else { |
| 159 | ERR("Please specify a tracer (kernel or user-space)"); |
| 160 | goto error; |
| 161 | } |
| 162 | |
| 163 | error: |
| 164 | return ret; |
| 165 | } |
| 166 | |
| 167 | /* |
| 168 | * cmd_add_context |
| 169 | * |
| 170 | * Add context on channel or event. |
| 171 | */ |
| 172 | int cmd_add_context(int argc, const char **argv) |
| 173 | { |
| 174 | int opt, ret = CMD_SUCCESS; |
| 175 | char *tmp; |
| 176 | static poptContext pc; |
| 177 | |
| 178 | if (argc < 2) { |
| 179 | usage(stderr); |
| 180 | goto end; |
| 181 | } |
| 182 | |
| 183 | pc = poptGetContext(NULL, argc, argv, long_options, 0); |
| 184 | poptReadDefaultConfig(pc, 0); |
| 185 | |
| 186 | while ((opt = poptGetNextOpt(pc)) != -1) { |
| 187 | switch (opt) { |
| 188 | case OPT_HELP: |
| 189 | usage(stderr); |
| 190 | ret = CMD_SUCCESS; |
| 191 | goto end; |
| 192 | case OPT_TYPE: |
| 193 | /* Mandatory field */ |
| 194 | tmp = poptGetOptArg(pc); |
| 195 | if (tmp == NULL) { |
| 196 | usage(stderr); |
| 197 | ret = CMD_ERROR; |
| 198 | free(tmp); |
| 199 | goto end; |
| 200 | } |
| 201 | ret = add_context(atoi(tmp)); |
| 202 | if (ret < 0) { |
| 203 | free(tmp); |
| 204 | goto end; |
| 205 | } |
| 206 | free(tmp); |
| 207 | break; |
| 208 | default: |
| 209 | usage(stderr); |
| 210 | ret = CMD_UNDEFINED; |
| 211 | goto end; |
| 212 | } |
| 213 | } |
| 214 | |
| 215 | end: |
| 216 | return ret; |
| 217 | } |