Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 1 | /* |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 2 | * probe-event.c : perf-probe definition to probe_events format converter |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 3 | * |
| 4 | * Written by Masami Hiramatsu <mhiramat@redhat.com> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | #define _GNU_SOURCE |
| 23 | #include <sys/utsname.h> |
| 24 | #include <sys/types.h> |
| 25 | #include <sys/stat.h> |
| 26 | #include <fcntl.h> |
| 27 | #include <errno.h> |
| 28 | #include <stdio.h> |
| 29 | #include <unistd.h> |
| 30 | #include <stdlib.h> |
| 31 | #include <string.h> |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 32 | #include <stdarg.h> |
| 33 | #include <limits.h> |
Masami Hiramatsu | e80711c | 2011-01-13 21:46:11 +0900 | [diff] [blame] | 34 | #include <elf.h> |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 35 | |
| 36 | #undef _GNU_SOURCE |
Masami Hiramatsu | 31facc5 | 2010-03-16 18:05:30 -0400 | [diff] [blame] | 37 | #include "util.h" |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 38 | #include "event.h" |
Masami Hiramatsu | e1c01d6 | 2009-11-30 19:20:05 -0500 | [diff] [blame] | 39 | #include "string.h" |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 40 | #include "strlist.h" |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 41 | #include "debug.h" |
Masami Hiramatsu | 7204133 | 2010-01-05 17:47:10 -0500 | [diff] [blame] | 42 | #include "cache.h" |
Masami Hiramatsu | 631c9de | 2010-01-06 09:45:34 -0500 | [diff] [blame] | 43 | #include "color.h" |
Masami Hiramatsu | e0faa8d | 2010-03-16 18:05:37 -0400 | [diff] [blame] | 44 | #include "symbol.h" |
| 45 | #include "thread.h" |
Masami Hiramatsu | 7ca5989 | 2010-04-14 18:39:28 -0400 | [diff] [blame] | 46 | #include "debugfs.h" |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 47 | #include "trace-event.h" /* For __unused */ |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 48 | #include "probe-event.h" |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 49 | #include "probe-finder.h" |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 50 | |
| 51 | #define MAX_CMDLEN 256 |
| 52 | #define MAX_PROBE_ARGS 128 |
| 53 | #define PERFPROBE_GROUP "probe" |
| 54 | |
Masami Hiramatsu | f4d7da4 | 2010-03-16 18:06:05 -0400 | [diff] [blame] | 55 | bool probe_event_dry_run; /* Dry run flag */ |
| 56 | |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 57 | #define semantic_error(msg ...) pr_err("Semantic error :" msg) |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 58 | |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 59 | /* If there is no space to write, returns -E2BIG. */ |
| 60 | static int e_snprintf(char *str, size_t size, const char *format, ...) |
Masami Hiramatsu | 8498845 | 2009-12-07 12:00:53 -0500 | [diff] [blame] | 61 | __attribute__((format(printf, 3, 4))); |
| 62 | |
| 63 | static int e_snprintf(char *str, size_t size, const char *format, ...) |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 64 | { |
| 65 | int ret; |
| 66 | va_list ap; |
| 67 | va_start(ap, format); |
| 68 | ret = vsnprintf(str, size, format, ap); |
| 69 | va_end(ap); |
| 70 | if (ret >= (int)size) |
| 71 | ret = -E2BIG; |
| 72 | return ret; |
| 73 | } |
| 74 | |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 75 | static char *synthesize_perf_probe_point(struct perf_probe_point *pp); |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 76 | static struct machine machine; |
Masami Hiramatsu | e0faa8d | 2010-03-16 18:05:37 -0400 | [diff] [blame] | 77 | |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 78 | /* Initialize symbol maps and path of vmlinux/modules */ |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 79 | static int init_vmlinux(void) |
Masami Hiramatsu | e0faa8d | 2010-03-16 18:05:37 -0400 | [diff] [blame] | 80 | { |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 81 | int ret; |
| 82 | |
Masami Hiramatsu | e0faa8d | 2010-03-16 18:05:37 -0400 | [diff] [blame] | 83 | symbol_conf.sort_by_name = true; |
| 84 | if (symbol_conf.vmlinux_name == NULL) |
| 85 | symbol_conf.try_vmlinux_path = true; |
| 86 | else |
| 87 | pr_debug("Use vmlinux: %s\n", symbol_conf.vmlinux_name); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 88 | ret = symbol__init(); |
| 89 | if (ret < 0) { |
| 90 | pr_debug("Failed to init symbol map.\n"); |
| 91 | goto out; |
| 92 | } |
Masami Hiramatsu | e0faa8d | 2010-03-16 18:05:37 -0400 | [diff] [blame] | 93 | |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 94 | ret = machine__init(&machine, "", HOST_KERNEL_ID); |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 95 | if (ret < 0) |
| 96 | goto out; |
| 97 | |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 98 | if (machine__create_kernel_maps(&machine) < 0) { |
Masami Hiramatsu | 0e43e5d | 2010-12-17 22:12:11 +0900 | [diff] [blame] | 99 | pr_debug("machine__create_kernel_maps() failed.\n"); |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 100 | goto out; |
| 101 | } |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 102 | out: |
| 103 | if (ret < 0) |
| 104 | pr_warning("Failed to init vmlinux path.\n"); |
| 105 | return ret; |
Masami Hiramatsu | e0faa8d | 2010-03-16 18:05:37 -0400 | [diff] [blame] | 106 | } |
| 107 | |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 108 | static struct symbol *__find_kernel_function_by_name(const char *name, |
| 109 | struct map **mapp) |
Masami Hiramatsu | e0faa8d | 2010-03-16 18:05:37 -0400 | [diff] [blame] | 110 | { |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 111 | return machine__find_kernel_function_by_name(&machine, name, mapp, |
| 112 | NULL); |
| 113 | } |
| 114 | |
Masami Hiramatsu | e80711c | 2011-01-13 21:46:11 +0900 | [diff] [blame] | 115 | static struct map *kernel_get_module_map(const char *module) |
| 116 | { |
| 117 | struct rb_node *nd; |
| 118 | struct map_groups *grp = &machine.kmaps; |
| 119 | |
| 120 | if (!module) |
| 121 | module = "kernel"; |
| 122 | |
| 123 | for (nd = rb_first(&grp->maps[MAP__FUNCTION]); nd; nd = rb_next(nd)) { |
| 124 | struct map *pos = rb_entry(nd, struct map, rb_node); |
| 125 | if (strncmp(pos->dso->short_name + 1, module, |
| 126 | pos->dso->short_name_len - 2) == 0) { |
| 127 | return pos; |
| 128 | } |
| 129 | } |
| 130 | return NULL; |
| 131 | } |
| 132 | |
| 133 | static struct dso *kernel_get_module_dso(const char *module) |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 134 | { |
| 135 | struct dso *dso; |
Franck Bui-Huu | fd930ff | 2010-12-10 14:06:03 +0100 | [diff] [blame] | 136 | struct map *map; |
| 137 | const char *vmlinux_name; |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 138 | |
| 139 | if (module) { |
| 140 | list_for_each_entry(dso, &machine.kernel_dsos, node) { |
| 141 | if (strncmp(dso->short_name + 1, module, |
| 142 | dso->short_name_len - 2) == 0) |
| 143 | goto found; |
| 144 | } |
| 145 | pr_debug("Failed to find module %s.\n", module); |
| 146 | return NULL; |
Franck Bui-Huu | fd930ff | 2010-12-10 14:06:03 +0100 | [diff] [blame] | 147 | } |
| 148 | |
| 149 | map = machine.vmlinux_maps[MAP__FUNCTION]; |
| 150 | dso = map->dso; |
| 151 | |
| 152 | vmlinux_name = symbol_conf.vmlinux_name; |
| 153 | if (vmlinux_name) { |
| 154 | if (dso__load_vmlinux(dso, map, vmlinux_name, NULL) <= 0) |
| 155 | return NULL; |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 156 | } else { |
Franck Bui-Huu | c3a34e0 | 2010-12-10 14:07:14 +0100 | [diff] [blame] | 157 | if (dso__load_vmlinux_path(dso, map, NULL) <= 0) { |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 158 | pr_debug("Failed to load kernel map.\n"); |
| 159 | return NULL; |
| 160 | } |
Masami Hiramatsu | e0faa8d | 2010-03-16 18:05:37 -0400 | [diff] [blame] | 161 | } |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 162 | found: |
Masami Hiramatsu | e80711c | 2011-01-13 21:46:11 +0900 | [diff] [blame] | 163 | return dso; |
| 164 | } |
| 165 | |
| 166 | const char *kernel_get_module_path(const char *module) |
| 167 | { |
| 168 | struct dso *dso = kernel_get_module_dso(module); |
| 169 | return (dso) ? dso->long_name : NULL; |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 170 | } |
| 171 | |
| 172 | #ifdef DWARF_SUPPORT |
Masami Hiramatsu | ff74178 | 2011-06-27 16:27:39 +0900 | [diff] [blame^] | 173 | /* Open new debuginfo of given module */ |
| 174 | static struct debuginfo *open_debuginfo(const char *module) |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 175 | { |
| 176 | const char *path = kernel_get_module_path(module); |
Masami Hiramatsu | ff74178 | 2011-06-27 16:27:39 +0900 | [diff] [blame^] | 177 | |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 178 | if (!path) { |
Masami Hiramatsu | 0e43e5d | 2010-12-17 22:12:11 +0900 | [diff] [blame] | 179 | pr_err("Failed to find path of %s module.\n", |
| 180 | module ?: "kernel"); |
Masami Hiramatsu | ff74178 | 2011-06-27 16:27:39 +0900 | [diff] [blame^] | 181 | return NULL; |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 182 | } |
Masami Hiramatsu | ff74178 | 2011-06-27 16:27:39 +0900 | [diff] [blame^] | 183 | return debuginfo__new(path); |
Masami Hiramatsu | e0faa8d | 2010-03-16 18:05:37 -0400 | [diff] [blame] | 184 | } |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 185 | |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 186 | /* |
| 187 | * Convert trace point to probe point with debuginfo |
| 188 | * Currently only handles kprobes. |
| 189 | */ |
| 190 | static int kprobe_convert_to_perf_probe(struct probe_trace_point *tp, |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 191 | struct perf_probe_point *pp) |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 192 | { |
| 193 | struct symbol *sym; |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 194 | struct map *map; |
| 195 | u64 addr; |
| 196 | int ret = -ENOENT; |
Masami Hiramatsu | ff74178 | 2011-06-27 16:27:39 +0900 | [diff] [blame^] | 197 | struct debuginfo *dinfo; |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 198 | |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 199 | sym = __find_kernel_function_by_name(tp->symbol, &map); |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 200 | if (sym) { |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 201 | addr = map->unmap_ip(map, sym->start + tp->offset); |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 202 | pr_debug("try to find %s+%ld@%" PRIx64 "\n", tp->symbol, |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 203 | tp->offset, addr); |
Masami Hiramatsu | ff74178 | 2011-06-27 16:27:39 +0900 | [diff] [blame^] | 204 | |
| 205 | dinfo = debuginfo__new_online_kernel(addr); |
| 206 | if (dinfo) { |
| 207 | ret = debuginfo__find_probe_point(dinfo, |
| 208 | (unsigned long)addr, pp); |
| 209 | debuginfo__delete(dinfo); |
| 210 | } else { |
| 211 | pr_debug("Failed to open debuginfo at 0x%" PRIx64 "\n", |
| 212 | addr); |
| 213 | ret = -ENOENT; |
| 214 | } |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 215 | } |
| 216 | if (ret <= 0) { |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 217 | pr_debug("Failed to find corresponding probes from " |
| 218 | "debuginfo. Use kprobe event information.\n"); |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 219 | pp->function = strdup(tp->symbol); |
| 220 | if (pp->function == NULL) |
| 221 | return -ENOMEM; |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 222 | pp->offset = tp->offset; |
| 223 | } |
| 224 | pp->retprobe = tp->retprobe; |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 225 | |
| 226 | return 0; |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 227 | } |
| 228 | |
| 229 | /* Try to find perf_probe_event with debuginfo */ |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 230 | static int try_to_find_probe_trace_events(struct perf_probe_event *pev, |
| 231 | struct probe_trace_event **tevs, |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 232 | int max_tevs, const char *module) |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 233 | { |
| 234 | bool need_dwarf = perf_probe_event_need_dwarf(pev); |
Masami Hiramatsu | ff74178 | 2011-06-27 16:27:39 +0900 | [diff] [blame^] | 235 | struct debuginfo *dinfo = open_debuginfo(module); |
| 236 | int ntevs; |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 237 | |
Masami Hiramatsu | ff74178 | 2011-06-27 16:27:39 +0900 | [diff] [blame^] | 238 | if (!dinfo) { |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 239 | if (need_dwarf) { |
| 240 | pr_warning("Failed to open debuginfo file.\n"); |
Masami Hiramatsu | ff74178 | 2011-06-27 16:27:39 +0900 | [diff] [blame^] | 241 | return -ENOENT; |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 242 | } |
Masami Hiramatsu | ff74178 | 2011-06-27 16:27:39 +0900 | [diff] [blame^] | 243 | pr_debug("Could not open debuginfo. Try to use symbols.\n"); |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 244 | return 0; |
| 245 | } |
| 246 | |
Masami Hiramatsu | ff74178 | 2011-06-27 16:27:39 +0900 | [diff] [blame^] | 247 | /* Searching trace events corresponding to a probe event */ |
| 248 | ntevs = debuginfo__find_trace_events(dinfo, pev, tevs, max_tevs); |
| 249 | |
| 250 | debuginfo__delete(dinfo); |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 251 | |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 252 | if (ntevs > 0) { /* Succeeded to find trace events */ |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 253 | pr_debug("find %d probe_trace_events.\n", ntevs); |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 254 | return ntevs; |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 255 | } |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 256 | |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 257 | if (ntevs == 0) { /* No error but failed to find probe point. */ |
| 258 | pr_warning("Probe point '%s' not found.\n", |
| 259 | synthesize_perf_probe_point(&pev->point)); |
| 260 | return -ENOENT; |
| 261 | } |
| 262 | /* Error path : ntevs < 0 */ |
Masami Hiramatsu | 15eca30 | 2010-04-21 15:56:24 -0400 | [diff] [blame] | 263 | pr_debug("An error occurred in debuginfo analysis (%d).\n", ntevs); |
| 264 | if (ntevs == -EBADF) { |
| 265 | pr_warning("Warning: No dwarf info found in the vmlinux - " |
| 266 | "please rebuild kernel with CONFIG_DEBUG_INFO=y.\n"); |
| 267 | if (!need_dwarf) { |
Masami Hiramatsu | 0e43e5d | 2010-12-17 22:12:11 +0900 | [diff] [blame] | 268 | pr_debug("Trying to use symbols.\n"); |
Masami Hiramatsu | 15eca30 | 2010-04-21 15:56:24 -0400 | [diff] [blame] | 269 | return 0; |
| 270 | } |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 271 | } |
Masami Hiramatsu | 15eca30 | 2010-04-21 15:56:24 -0400 | [diff] [blame] | 272 | return ntevs; |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 273 | } |
| 274 | |
Masami Hiramatsu | 7cf0b79 | 2010-07-09 18:28:59 +0900 | [diff] [blame] | 275 | /* |
| 276 | * Find a src file from a DWARF tag path. Prepend optional source path prefix |
| 277 | * and chop off leading directories that do not exist. Result is passed back as |
| 278 | * a newly allocated path on success. |
| 279 | * Return 0 if file was found and readable, -errno otherwise. |
| 280 | */ |
Masami Hiramatsu | 6a330a3 | 2010-07-09 18:29:11 +0900 | [diff] [blame] | 281 | static int get_real_path(const char *raw_path, const char *comp_dir, |
| 282 | char **new_path) |
Masami Hiramatsu | 7cf0b79 | 2010-07-09 18:28:59 +0900 | [diff] [blame] | 283 | { |
Masami Hiramatsu | 6a330a3 | 2010-07-09 18:29:11 +0900 | [diff] [blame] | 284 | const char *prefix = symbol_conf.source_prefix; |
| 285 | |
| 286 | if (!prefix) { |
| 287 | if (raw_path[0] != '/' && comp_dir) |
| 288 | /* If not an absolute path, try to use comp_dir */ |
| 289 | prefix = comp_dir; |
| 290 | else { |
| 291 | if (access(raw_path, R_OK) == 0) { |
| 292 | *new_path = strdup(raw_path); |
| 293 | return 0; |
| 294 | } else |
| 295 | return -errno; |
| 296 | } |
Masami Hiramatsu | 7cf0b79 | 2010-07-09 18:28:59 +0900 | [diff] [blame] | 297 | } |
| 298 | |
Masami Hiramatsu | 6a330a3 | 2010-07-09 18:29:11 +0900 | [diff] [blame] | 299 | *new_path = malloc((strlen(prefix) + strlen(raw_path) + 2)); |
Masami Hiramatsu | 7cf0b79 | 2010-07-09 18:28:59 +0900 | [diff] [blame] | 300 | if (!*new_path) |
| 301 | return -ENOMEM; |
| 302 | |
| 303 | for (;;) { |
Masami Hiramatsu | 6a330a3 | 2010-07-09 18:29:11 +0900 | [diff] [blame] | 304 | sprintf(*new_path, "%s/%s", prefix, raw_path); |
Masami Hiramatsu | 7cf0b79 | 2010-07-09 18:28:59 +0900 | [diff] [blame] | 305 | |
| 306 | if (access(*new_path, R_OK) == 0) |
| 307 | return 0; |
| 308 | |
Masami Hiramatsu | 6a330a3 | 2010-07-09 18:29:11 +0900 | [diff] [blame] | 309 | if (!symbol_conf.source_prefix) |
| 310 | /* In case of searching comp_dir, don't retry */ |
| 311 | return -errno; |
| 312 | |
Masami Hiramatsu | 7cf0b79 | 2010-07-09 18:28:59 +0900 | [diff] [blame] | 313 | switch (errno) { |
| 314 | case ENAMETOOLONG: |
| 315 | case ENOENT: |
| 316 | case EROFS: |
| 317 | case EFAULT: |
| 318 | raw_path = strchr(++raw_path, '/'); |
| 319 | if (!raw_path) { |
| 320 | free(*new_path); |
| 321 | *new_path = NULL; |
| 322 | return -ENOENT; |
| 323 | } |
| 324 | continue; |
| 325 | |
| 326 | default: |
| 327 | free(*new_path); |
| 328 | *new_path = NULL; |
| 329 | return -errno; |
| 330 | } |
| 331 | } |
| 332 | } |
| 333 | |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 334 | #define LINEBUF_SIZE 256 |
| 335 | #define NR_ADDITIONAL_LINES 2 |
| 336 | |
Franck Bui-Huu | fde52db | 2010-12-20 15:18:04 +0100 | [diff] [blame] | 337 | static int __show_one_line(FILE *fp, int l, bool skip, bool show_num) |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 338 | { |
| 339 | char buf[LINEBUF_SIZE]; |
Franck Bui-Huu | befe341 | 2010-12-20 15:18:01 +0100 | [diff] [blame] | 340 | const char *color = show_num ? "" : PERF_COLOR_BLUE; |
| 341 | const char *prefix = NULL; |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 342 | |
Franck Bui-Huu | befe341 | 2010-12-20 15:18:01 +0100 | [diff] [blame] | 343 | do { |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 344 | if (fgets(buf, LINEBUF_SIZE, fp) == NULL) |
| 345 | goto error; |
Franck Bui-Huu | befe341 | 2010-12-20 15:18:01 +0100 | [diff] [blame] | 346 | if (skip) |
| 347 | continue; |
| 348 | if (!prefix) { |
| 349 | prefix = show_num ? "%7d " : " "; |
| 350 | color_fprintf(stdout, color, prefix, l); |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 351 | } |
Franck Bui-Huu | befe341 | 2010-12-20 15:18:01 +0100 | [diff] [blame] | 352 | color_fprintf(stdout, color, "%s", buf); |
| 353 | |
| 354 | } while (strchr(buf, '\n') == NULL); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 355 | |
Franck Bui-Huu | fde52db | 2010-12-20 15:18:04 +0100 | [diff] [blame] | 356 | return 1; |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 357 | error: |
Franck Bui-Huu | fde52db | 2010-12-20 15:18:04 +0100 | [diff] [blame] | 358 | if (ferror(fp)) { |
Franck Bui-Huu | 32b2b6e | 2010-12-22 17:37:13 +0100 | [diff] [blame] | 359 | pr_warning("File read error: %s\n", strerror(errno)); |
Franck Bui-Huu | fde52db | 2010-12-20 15:18:04 +0100 | [diff] [blame] | 360 | return -1; |
| 361 | } |
| 362 | return 0; |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 363 | } |
| 364 | |
Franck Bui-Huu | fde52db | 2010-12-20 15:18:04 +0100 | [diff] [blame] | 365 | static int _show_one_line(FILE *fp, int l, bool skip, bool show_num) |
| 366 | { |
| 367 | int rv = __show_one_line(fp, l, skip, show_num); |
| 368 | if (rv == 0) { |
| 369 | pr_warning("Source file is shorter than expected.\n"); |
| 370 | rv = -1; |
| 371 | } |
| 372 | return rv; |
| 373 | } |
| 374 | |
| 375 | #define show_one_line_with_num(f,l) _show_one_line(f,l,false,true) |
| 376 | #define show_one_line(f,l) _show_one_line(f,l,false,false) |
| 377 | #define skip_one_line(f,l) _show_one_line(f,l,true,false) |
| 378 | #define show_one_line_or_eof(f,l) __show_one_line(f,l,false,false) |
| 379 | |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 380 | /* |
| 381 | * Show line-range always requires debuginfo to find source file and |
| 382 | * line number. |
| 383 | */ |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 384 | int show_line_range(struct line_range *lr, const char *module) |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 385 | { |
Masami Hiramatsu | d3b63d7 | 2010-04-14 18:39:42 -0400 | [diff] [blame] | 386 | int l = 1; |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 387 | struct line_node *ln; |
Masami Hiramatsu | ff74178 | 2011-06-27 16:27:39 +0900 | [diff] [blame^] | 388 | struct debuginfo *dinfo; |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 389 | FILE *fp; |
Masami Hiramatsu | ff74178 | 2011-06-27 16:27:39 +0900 | [diff] [blame^] | 390 | int ret; |
Masami Hiramatsu | 7cf0b79 | 2010-07-09 18:28:59 +0900 | [diff] [blame] | 391 | char *tmp; |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 392 | |
| 393 | /* Search a line range */ |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 394 | ret = init_vmlinux(); |
| 395 | if (ret < 0) |
| 396 | return ret; |
| 397 | |
Masami Hiramatsu | ff74178 | 2011-06-27 16:27:39 +0900 | [diff] [blame^] | 398 | dinfo = open_debuginfo(module); |
| 399 | if (!dinfo) { |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 400 | pr_warning("Failed to open debuginfo file.\n"); |
Masami Hiramatsu | ff74178 | 2011-06-27 16:27:39 +0900 | [diff] [blame^] | 401 | return -ENOENT; |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 402 | } |
| 403 | |
Masami Hiramatsu | ff74178 | 2011-06-27 16:27:39 +0900 | [diff] [blame^] | 404 | ret = debuginfo__find_line_range(dinfo, lr); |
| 405 | debuginfo__delete(dinfo); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 406 | if (ret == 0) { |
| 407 | pr_warning("Specified source line is not found.\n"); |
| 408 | return -ENOENT; |
| 409 | } else if (ret < 0) { |
| 410 | pr_warning("Debuginfo analysis failed. (%d)\n", ret); |
| 411 | return ret; |
| 412 | } |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 413 | |
Masami Hiramatsu | 7cf0b79 | 2010-07-09 18:28:59 +0900 | [diff] [blame] | 414 | /* Convert source file path */ |
| 415 | tmp = lr->path; |
Masami Hiramatsu | 6a330a3 | 2010-07-09 18:29:11 +0900 | [diff] [blame] | 416 | ret = get_real_path(tmp, lr->comp_dir, &lr->path); |
Masami Hiramatsu | 7cf0b79 | 2010-07-09 18:28:59 +0900 | [diff] [blame] | 417 | free(tmp); /* Free old path */ |
| 418 | if (ret < 0) { |
| 419 | pr_warning("Failed to find source file. (%d)\n", ret); |
| 420 | return ret; |
| 421 | } |
| 422 | |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 423 | setup_pager(); |
| 424 | |
| 425 | if (lr->function) |
Masami Hiramatsu | 8737ebd | 2011-02-10 18:08:16 +0900 | [diff] [blame] | 426 | fprintf(stdout, "<%s@%s:%d>\n", lr->function, lr->path, |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 427 | lr->start - lr->offset); |
| 428 | else |
Franck Bui-Huu | 62c15fc | 2010-12-20 15:18:00 +0100 | [diff] [blame] | 429 | fprintf(stdout, "<%s:%d>\n", lr->path, lr->start); |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 430 | |
| 431 | fp = fopen(lr->path, "r"); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 432 | if (fp == NULL) { |
| 433 | pr_warning("Failed to open %s: %s\n", lr->path, |
| 434 | strerror(errno)); |
| 435 | return -errno; |
| 436 | } |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 437 | /* Skip to starting line number */ |
Franck Bui-Huu | 44b81e9 | 2010-12-20 15:18:02 +0100 | [diff] [blame] | 438 | while (l < lr->start) { |
Franck Bui-Huu | fde52db | 2010-12-20 15:18:04 +0100 | [diff] [blame] | 439 | ret = skip_one_line(fp, l++); |
Franck Bui-Huu | 44b81e9 | 2010-12-20 15:18:02 +0100 | [diff] [blame] | 440 | if (ret < 0) |
| 441 | goto end; |
| 442 | } |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 443 | |
| 444 | list_for_each_entry(ln, &lr->line_list, list) { |
Franck Bui-Huu | 44b81e9 | 2010-12-20 15:18:02 +0100 | [diff] [blame] | 445 | for (; ln->line > l; l++) { |
Franck Bui-Huu | fde52db | 2010-12-20 15:18:04 +0100 | [diff] [blame] | 446 | ret = show_one_line(fp, l - lr->offset); |
Franck Bui-Huu | 44b81e9 | 2010-12-20 15:18:02 +0100 | [diff] [blame] | 447 | if (ret < 0) |
| 448 | goto end; |
| 449 | } |
Franck Bui-Huu | fde52db | 2010-12-20 15:18:04 +0100 | [diff] [blame] | 450 | ret = show_one_line_with_num(fp, l++ - lr->offset); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 451 | if (ret < 0) |
| 452 | goto end; |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 453 | } |
| 454 | |
| 455 | if (lr->end == INT_MAX) |
| 456 | lr->end = l + NR_ADDITIONAL_LINES; |
Franck Bui-Huu | fde52db | 2010-12-20 15:18:04 +0100 | [diff] [blame] | 457 | while (l <= lr->end) { |
| 458 | ret = show_one_line_or_eof(fp, l++ - lr->offset); |
| 459 | if (ret <= 0) |
Franck Bui-Huu | 44b81e9 | 2010-12-20 15:18:02 +0100 | [diff] [blame] | 460 | break; |
| 461 | } |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 462 | end: |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 463 | fclose(fp); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 464 | return ret; |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 465 | } |
| 466 | |
Masami Hiramatsu | ff74178 | 2011-06-27 16:27:39 +0900 | [diff] [blame^] | 467 | static int show_available_vars_at(struct debuginfo *dinfo, |
| 468 | struct perf_probe_event *pev, |
Masami Hiramatsu | bd09d7b | 2011-01-20 23:15:39 +0900 | [diff] [blame] | 469 | int max_vls, struct strfilter *_filter, |
| 470 | bool externs) |
Masami Hiramatsu | cf6eb48 | 2010-10-21 19:13:23 +0900 | [diff] [blame] | 471 | { |
| 472 | char *buf; |
Masami Hiramatsu | bd09d7b | 2011-01-20 23:15:39 +0900 | [diff] [blame] | 473 | int ret, i, nvars; |
Masami Hiramatsu | cf6eb48 | 2010-10-21 19:13:23 +0900 | [diff] [blame] | 474 | struct str_node *node; |
| 475 | struct variable_list *vls = NULL, *vl; |
Masami Hiramatsu | bd09d7b | 2011-01-20 23:15:39 +0900 | [diff] [blame] | 476 | const char *var; |
Masami Hiramatsu | cf6eb48 | 2010-10-21 19:13:23 +0900 | [diff] [blame] | 477 | |
| 478 | buf = synthesize_perf_probe_point(&pev->point); |
| 479 | if (!buf) |
| 480 | return -EINVAL; |
| 481 | pr_debug("Searching variables at %s\n", buf); |
| 482 | |
Masami Hiramatsu | ff74178 | 2011-06-27 16:27:39 +0900 | [diff] [blame^] | 483 | ret = debuginfo__find_available_vars_at(dinfo, pev, &vls, |
| 484 | max_vls, externs); |
Masami Hiramatsu | bd09d7b | 2011-01-20 23:15:39 +0900 | [diff] [blame] | 485 | if (ret <= 0) { |
Masami Hiramatsu | cf6eb48 | 2010-10-21 19:13:23 +0900 | [diff] [blame] | 486 | pr_err("Failed to find variables at %s (%d)\n", buf, ret); |
Masami Hiramatsu | bd09d7b | 2011-01-20 23:15:39 +0900 | [diff] [blame] | 487 | goto end; |
| 488 | } |
| 489 | /* Some variables are found */ |
| 490 | fprintf(stdout, "Available variables at %s\n", buf); |
| 491 | for (i = 0; i < ret; i++) { |
| 492 | vl = &vls[i]; |
| 493 | /* |
| 494 | * A probe point might be converted to |
| 495 | * several trace points. |
| 496 | */ |
| 497 | fprintf(stdout, "\t@<%s+%lu>\n", vl->point.symbol, |
| 498 | vl->point.offset); |
| 499 | free(vl->point.symbol); |
| 500 | nvars = 0; |
| 501 | if (vl->vars) { |
| 502 | strlist__for_each(node, vl->vars) { |
| 503 | var = strchr(node->s, '\t') + 1; |
| 504 | if (strfilter__compare(_filter, var)) { |
| 505 | fprintf(stdout, "\t\t%s\n", node->s); |
| 506 | nvars++; |
| 507 | } |
| 508 | } |
| 509 | strlist__delete(vl->vars); |
| 510 | } |
| 511 | if (nvars == 0) |
| 512 | fprintf(stdout, "\t\t(No matched variables)\n"); |
| 513 | } |
| 514 | free(vls); |
| 515 | end: |
Masami Hiramatsu | cf6eb48 | 2010-10-21 19:13:23 +0900 | [diff] [blame] | 516 | free(buf); |
| 517 | return ret; |
| 518 | } |
| 519 | |
| 520 | /* Show available variables on given probe point */ |
| 521 | int show_available_vars(struct perf_probe_event *pevs, int npevs, |
Masami Hiramatsu | bd09d7b | 2011-01-20 23:15:39 +0900 | [diff] [blame] | 522 | int max_vls, const char *module, |
| 523 | struct strfilter *_filter, bool externs) |
Masami Hiramatsu | cf6eb48 | 2010-10-21 19:13:23 +0900 | [diff] [blame] | 524 | { |
Masami Hiramatsu | ff74178 | 2011-06-27 16:27:39 +0900 | [diff] [blame^] | 525 | int i, ret = 0; |
| 526 | struct debuginfo *dinfo; |
Masami Hiramatsu | cf6eb48 | 2010-10-21 19:13:23 +0900 | [diff] [blame] | 527 | |
| 528 | ret = init_vmlinux(); |
| 529 | if (ret < 0) |
| 530 | return ret; |
| 531 | |
Masami Hiramatsu | ff74178 | 2011-06-27 16:27:39 +0900 | [diff] [blame^] | 532 | dinfo = open_debuginfo(module); |
| 533 | if (!dinfo) { |
| 534 | pr_warning("Failed to open debuginfo file.\n"); |
| 535 | return -ENOENT; |
| 536 | } |
| 537 | |
Masami Hiramatsu | cf6eb48 | 2010-10-21 19:13:23 +0900 | [diff] [blame] | 538 | setup_pager(); |
| 539 | |
Masami Hiramatsu | ff74178 | 2011-06-27 16:27:39 +0900 | [diff] [blame^] | 540 | for (i = 0; i < npevs && ret >= 0; i++) |
| 541 | ret = show_available_vars_at(dinfo, &pevs[i], max_vls, _filter, |
Masami Hiramatsu | bd09d7b | 2011-01-20 23:15:39 +0900 | [diff] [blame] | 542 | externs); |
Masami Hiramatsu | ff74178 | 2011-06-27 16:27:39 +0900 | [diff] [blame^] | 543 | |
| 544 | debuginfo__delete(dinfo); |
Masami Hiramatsu | cf6eb48 | 2010-10-21 19:13:23 +0900 | [diff] [blame] | 545 | return ret; |
| 546 | } |
| 547 | |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 548 | #else /* !DWARF_SUPPORT */ |
| 549 | |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 550 | static int kprobe_convert_to_perf_probe(struct probe_trace_point *tp, |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 551 | struct perf_probe_point *pp) |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 552 | { |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 553 | struct symbol *sym; |
| 554 | |
| 555 | sym = __find_kernel_function_by_name(tp->symbol, NULL); |
| 556 | if (!sym) { |
| 557 | pr_err("Failed to find symbol %s in kernel.\n", tp->symbol); |
| 558 | return -ENOENT; |
| 559 | } |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 560 | pp->function = strdup(tp->symbol); |
| 561 | if (pp->function == NULL) |
| 562 | return -ENOMEM; |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 563 | pp->offset = tp->offset; |
| 564 | pp->retprobe = tp->retprobe; |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 565 | |
| 566 | return 0; |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 567 | } |
| 568 | |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 569 | static int try_to_find_probe_trace_events(struct perf_probe_event *pev, |
| 570 | struct probe_trace_event **tevs __unused, |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 571 | int max_tevs __unused, const char *mod __unused) |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 572 | { |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 573 | if (perf_probe_event_need_dwarf(pev)) { |
| 574 | pr_warning("Debuginfo-analysis is not supported.\n"); |
| 575 | return -ENOSYS; |
| 576 | } |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 577 | return 0; |
| 578 | } |
| 579 | |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 580 | int show_line_range(struct line_range *lr __unused, const char *module __unused) |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 581 | { |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 582 | pr_warning("Debuginfo-analysis is not supported.\n"); |
| 583 | return -ENOSYS; |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 584 | } |
| 585 | |
Masami Hiramatsu | cf6eb48 | 2010-10-21 19:13:23 +0900 | [diff] [blame] | 586 | int show_available_vars(struct perf_probe_event *pevs __unused, |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 587 | int npevs __unused, int max_vls __unused, |
Masami Hiramatsu | bd09d7b | 2011-01-20 23:15:39 +0900 | [diff] [blame] | 588 | const char *module __unused, |
| 589 | struct strfilter *filter __unused, |
| 590 | bool externs __unused) |
Masami Hiramatsu | cf6eb48 | 2010-10-21 19:13:23 +0900 | [diff] [blame] | 591 | { |
| 592 | pr_warning("Debuginfo-analysis is not supported.\n"); |
| 593 | return -ENOSYS; |
| 594 | } |
Masami Hiramatsu | e0faa8d | 2010-03-16 18:05:37 -0400 | [diff] [blame] | 595 | #endif |
| 596 | |
Franck Bui-Huu | 21dd9ae | 2010-12-20 15:18:05 +0100 | [diff] [blame] | 597 | static int parse_line_num(char **ptr, int *val, const char *what) |
| 598 | { |
| 599 | const char *start = *ptr; |
| 600 | |
| 601 | errno = 0; |
| 602 | *val = strtol(*ptr, ptr, 0); |
| 603 | if (errno || *ptr == start) { |
| 604 | semantic_error("'%s' is not a valid number.\n", what); |
| 605 | return -EINVAL; |
| 606 | } |
| 607 | return 0; |
| 608 | } |
| 609 | |
Franck Bui-Huu | 9d95b58 | 2010-12-20 15:18:03 +0100 | [diff] [blame] | 610 | /* |
| 611 | * Stuff 'lr' according to the line range described by 'arg'. |
| 612 | * The line range syntax is described by: |
| 613 | * |
| 614 | * SRC[:SLN[+NUM|-ELN]] |
Masami Hiramatsu | e116dfa | 2011-02-10 18:08:10 +0900 | [diff] [blame] | 615 | * FNC[@SRC][:SLN[+NUM|-ELN]] |
Franck Bui-Huu | 9d95b58 | 2010-12-20 15:18:03 +0100 | [diff] [blame] | 616 | */ |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 617 | int parse_line_range_desc(const char *arg, struct line_range *lr) |
Masami Hiramatsu | 631c9de | 2010-01-06 09:45:34 -0500 | [diff] [blame] | 618 | { |
Masami Hiramatsu | e116dfa | 2011-02-10 18:08:10 +0900 | [diff] [blame] | 619 | char *range, *file, *name = strdup(arg); |
Franck Bui-Huu | 21dd9ae | 2010-12-20 15:18:05 +0100 | [diff] [blame] | 620 | int err; |
Franck Bui-Huu | 9d95b58 | 2010-12-20 15:18:03 +0100 | [diff] [blame] | 621 | |
Franck Bui-Huu | 21dd9ae | 2010-12-20 15:18:05 +0100 | [diff] [blame] | 622 | if (!name) |
| 623 | return -ENOMEM; |
| 624 | |
| 625 | lr->start = 0; |
| 626 | lr->end = INT_MAX; |
| 627 | |
| 628 | range = strchr(name, ':'); |
| 629 | if (range) { |
| 630 | *range++ = '\0'; |
| 631 | |
| 632 | err = parse_line_num(&range, &lr->start, "start line"); |
| 633 | if (err) |
| 634 | goto err; |
| 635 | |
| 636 | if (*range == '+' || *range == '-') { |
| 637 | const char c = *range++; |
| 638 | |
| 639 | err = parse_line_num(&range, &lr->end, "end line"); |
| 640 | if (err) |
| 641 | goto err; |
| 642 | |
| 643 | if (c == '+') { |
| 644 | lr->end += lr->start; |
| 645 | /* |
| 646 | * Adjust the number of lines here. |
| 647 | * If the number of lines == 1, the |
| 648 | * the end of line should be equal to |
| 649 | * the start of line. |
| 650 | */ |
| 651 | lr->end--; |
| 652 | } |
| 653 | } |
| 654 | |
Masami Hiramatsu | d3b63d7 | 2010-04-14 18:39:42 -0400 | [diff] [blame] | 655 | pr_debug("Line range is %d to %d\n", lr->start, lr->end); |
Franck Bui-Huu | 21dd9ae | 2010-12-20 15:18:05 +0100 | [diff] [blame] | 656 | |
| 657 | err = -EINVAL; |
Masami Hiramatsu | d3b63d7 | 2010-04-14 18:39:42 -0400 | [diff] [blame] | 658 | if (lr->start > lr->end) { |
Masami Hiramatsu | 631c9de | 2010-01-06 09:45:34 -0500 | [diff] [blame] | 659 | semantic_error("Start line must be smaller" |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 660 | " than end line.\n"); |
Franck Bui-Huu | 21dd9ae | 2010-12-20 15:18:05 +0100 | [diff] [blame] | 661 | goto err; |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 662 | } |
Franck Bui-Huu | 21dd9ae | 2010-12-20 15:18:05 +0100 | [diff] [blame] | 663 | if (*range != '\0') { |
| 664 | semantic_error("Tailing with invalid str '%s'.\n", range); |
| 665 | goto err; |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 666 | } |
Masami Hiramatsu | d3b63d7 | 2010-04-14 18:39:42 -0400 | [diff] [blame] | 667 | } |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 668 | |
Masami Hiramatsu | e116dfa | 2011-02-10 18:08:10 +0900 | [diff] [blame] | 669 | file = strchr(name, '@'); |
| 670 | if (file) { |
| 671 | *file = '\0'; |
| 672 | lr->file = strdup(++file); |
| 673 | if (lr->file == NULL) { |
| 674 | err = -ENOMEM; |
| 675 | goto err; |
| 676 | } |
| 677 | lr->function = name; |
| 678 | } else if (strchr(name, '.')) |
Franck Bui-Huu | 21dd9ae | 2010-12-20 15:18:05 +0100 | [diff] [blame] | 679 | lr->file = name; |
Masami Hiramatsu | 631c9de | 2010-01-06 09:45:34 -0500 | [diff] [blame] | 680 | else |
Franck Bui-Huu | 21dd9ae | 2010-12-20 15:18:05 +0100 | [diff] [blame] | 681 | lr->function = name; |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 682 | |
| 683 | return 0; |
Franck Bui-Huu | 21dd9ae | 2010-12-20 15:18:05 +0100 | [diff] [blame] | 684 | err: |
| 685 | free(name); |
| 686 | return err; |
Masami Hiramatsu | 631c9de | 2010-01-06 09:45:34 -0500 | [diff] [blame] | 687 | } |
| 688 | |
Masami Hiramatsu | b7702a2 | 2009-12-16 17:24:15 -0500 | [diff] [blame] | 689 | /* Check the name is good for event/group */ |
| 690 | static bool check_event_name(const char *name) |
| 691 | { |
| 692 | if (!isalpha(*name) && *name != '_') |
| 693 | return false; |
| 694 | while (*++name != '\0') { |
| 695 | if (!isalpha(*name) && !isdigit(*name) && *name != '_') |
| 696 | return false; |
| 697 | } |
| 698 | return true; |
| 699 | } |
| 700 | |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 701 | /* Parse probepoint definition. */ |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 702 | static int parse_perf_probe_point(char *arg, struct perf_probe_event *pev) |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 703 | { |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 704 | struct perf_probe_point *pp = &pev->point; |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 705 | char *ptr, *tmp; |
| 706 | char c, nc = 0; |
| 707 | /* |
| 708 | * <Syntax> |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame] | 709 | * perf probe [EVENT=]SRC[:LN|;PTN] |
| 710 | * perf probe [EVENT=]FUNC[@SRC][+OFFS|%return|:LN|;PAT] |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 711 | * |
| 712 | * TODO:Group name support |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 713 | */ |
| 714 | |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame] | 715 | ptr = strpbrk(arg, ";=@+%"); |
| 716 | if (ptr && *ptr == '=') { /* Event name */ |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 717 | *ptr = '\0'; |
| 718 | tmp = ptr + 1; |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 719 | if (strchr(arg, ':')) { |
| 720 | semantic_error("Group name is not supported yet.\n"); |
| 721 | return -ENOTSUP; |
| 722 | } |
| 723 | if (!check_event_name(arg)) { |
Masami Hiramatsu | b7702a2 | 2009-12-16 17:24:15 -0500 | [diff] [blame] | 724 | semantic_error("%s is bad for event name -it must " |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 725 | "follow C symbol-naming rule.\n", arg); |
| 726 | return -EINVAL; |
| 727 | } |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 728 | pev->event = strdup(arg); |
| 729 | if (pev->event == NULL) |
| 730 | return -ENOMEM; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 731 | pev->group = NULL; |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 732 | arg = tmp; |
| 733 | } |
| 734 | |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame] | 735 | ptr = strpbrk(arg, ";:+@%"); |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 736 | if (ptr) { |
| 737 | nc = *ptr; |
| 738 | *ptr++ = '\0'; |
| 739 | } |
| 740 | |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 741 | tmp = strdup(arg); |
| 742 | if (tmp == NULL) |
| 743 | return -ENOMEM; |
| 744 | |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 745 | /* Check arg is function or file and copy it */ |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 746 | if (strchr(tmp, '.')) /* File */ |
| 747 | pp->file = tmp; |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 748 | else /* Function */ |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 749 | pp->function = tmp; |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 750 | |
| 751 | /* Parse other options */ |
| 752 | while (ptr) { |
| 753 | arg = ptr; |
| 754 | c = nc; |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame] | 755 | if (c == ';') { /* Lazy pattern must be the last part */ |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 756 | pp->lazy_line = strdup(arg); |
| 757 | if (pp->lazy_line == NULL) |
| 758 | return -ENOMEM; |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame] | 759 | break; |
| 760 | } |
| 761 | ptr = strpbrk(arg, ";:+@%"); |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 762 | if (ptr) { |
| 763 | nc = *ptr; |
| 764 | *ptr++ = '\0'; |
| 765 | } |
| 766 | switch (c) { |
| 767 | case ':': /* Line number */ |
| 768 | pp->line = strtoul(arg, &tmp, 0); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 769 | if (*tmp != '\0') { |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame] | 770 | semantic_error("There is non-digit char" |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 771 | " in line number.\n"); |
| 772 | return -EINVAL; |
| 773 | } |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 774 | break; |
| 775 | case '+': /* Byte offset from a symbol */ |
| 776 | pp->offset = strtoul(arg, &tmp, 0); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 777 | if (*tmp != '\0') { |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame] | 778 | semantic_error("There is non-digit character" |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 779 | " in offset.\n"); |
| 780 | return -EINVAL; |
| 781 | } |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 782 | break; |
| 783 | case '@': /* File name */ |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 784 | if (pp->file) { |
| 785 | semantic_error("SRC@SRC is not allowed.\n"); |
| 786 | return -EINVAL; |
| 787 | } |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 788 | pp->file = strdup(arg); |
| 789 | if (pp->file == NULL) |
| 790 | return -ENOMEM; |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 791 | break; |
| 792 | case '%': /* Probe places */ |
| 793 | if (strcmp(arg, "return") == 0) { |
| 794 | pp->retprobe = 1; |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 795 | } else { /* Others not supported yet */ |
| 796 | semantic_error("%%%s is not supported.\n", arg); |
| 797 | return -ENOTSUP; |
| 798 | } |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 799 | break; |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 800 | default: /* Buggy case */ |
| 801 | pr_err("This program has a bug at %s:%d.\n", |
| 802 | __FILE__, __LINE__); |
| 803 | return -ENOTSUP; |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 804 | break; |
| 805 | } |
| 806 | } |
| 807 | |
| 808 | /* Exclusion check */ |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 809 | if (pp->lazy_line && pp->line) { |
Masami Hiramatsu | 0e43e5d | 2010-12-17 22:12:11 +0900 | [diff] [blame] | 810 | semantic_error("Lazy pattern can't be used with" |
| 811 | " line number.\n"); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 812 | return -EINVAL; |
| 813 | } |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame] | 814 | |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 815 | if (pp->lazy_line && pp->offset) { |
Masami Hiramatsu | 0e43e5d | 2010-12-17 22:12:11 +0900 | [diff] [blame] | 816 | semantic_error("Lazy pattern can't be used with offset.\n"); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 817 | return -EINVAL; |
| 818 | } |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame] | 819 | |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 820 | if (pp->line && pp->offset) { |
Masami Hiramatsu | 0e43e5d | 2010-12-17 22:12:11 +0900 | [diff] [blame] | 821 | semantic_error("Offset can't be used with line number.\n"); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 822 | return -EINVAL; |
| 823 | } |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 824 | |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 825 | if (!pp->line && !pp->lazy_line && pp->file && !pp->function) { |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame] | 826 | semantic_error("File always requires line number or " |
Masami Hiramatsu | 0e43e5d | 2010-12-17 22:12:11 +0900 | [diff] [blame] | 827 | "lazy pattern.\n"); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 828 | return -EINVAL; |
| 829 | } |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 830 | |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 831 | if (pp->offset && !pp->function) { |
Masami Hiramatsu | 0e43e5d | 2010-12-17 22:12:11 +0900 | [diff] [blame] | 832 | semantic_error("Offset requires an entry function.\n"); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 833 | return -EINVAL; |
| 834 | } |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 835 | |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 836 | if (pp->retprobe && !pp->function) { |
Masami Hiramatsu | 0e43e5d | 2010-12-17 22:12:11 +0900 | [diff] [blame] | 837 | semantic_error("Return probe requires an entry function.\n"); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 838 | return -EINVAL; |
| 839 | } |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 840 | |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 841 | if ((pp->offset || pp->line || pp->lazy_line) && pp->retprobe) { |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame] | 842 | semantic_error("Offset/Line/Lazy pattern can't be used with " |
Masami Hiramatsu | 0e43e5d | 2010-12-17 22:12:11 +0900 | [diff] [blame] | 843 | "return probe.\n"); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 844 | return -EINVAL; |
| 845 | } |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 846 | |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 847 | pr_debug("symbol:%s file:%s line:%d offset:%lu return:%d lazy:%s\n", |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame] | 848 | pp->function, pp->file, pp->line, pp->offset, pp->retprobe, |
| 849 | pp->lazy_line); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 850 | return 0; |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 851 | } |
| 852 | |
Masami Hiramatsu | 7df2f32 | 2010-03-16 18:06:26 -0400 | [diff] [blame] | 853 | /* Parse perf-probe event argument */ |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 854 | static int parse_perf_probe_arg(char *str, struct perf_probe_arg *arg) |
Masami Hiramatsu | 7df2f32 | 2010-03-16 18:06:26 -0400 | [diff] [blame] | 855 | { |
Masami Hiramatsu | b2a3c12 | 2010-05-19 15:57:42 -0400 | [diff] [blame] | 856 | char *tmp, *goodname; |
Masami Hiramatsu | 7df2f32 | 2010-03-16 18:06:26 -0400 | [diff] [blame] | 857 | struct perf_probe_arg_field **fieldp; |
| 858 | |
| 859 | pr_debug("parsing arg: %s into ", str); |
| 860 | |
Masami Hiramatsu | 4848193 | 2010-04-12 13:16:53 -0400 | [diff] [blame] | 861 | tmp = strchr(str, '='); |
| 862 | if (tmp) { |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 863 | arg->name = strndup(str, tmp - str); |
| 864 | if (arg->name == NULL) |
| 865 | return -ENOMEM; |
Masami Hiramatsu | 11a1ca3 | 2010-04-12 13:17:22 -0400 | [diff] [blame] | 866 | pr_debug("name:%s ", arg->name); |
Masami Hiramatsu | 4848193 | 2010-04-12 13:16:53 -0400 | [diff] [blame] | 867 | str = tmp + 1; |
| 868 | } |
| 869 | |
Masami Hiramatsu | 11a1ca3 | 2010-04-12 13:17:22 -0400 | [diff] [blame] | 870 | tmp = strchr(str, ':'); |
| 871 | if (tmp) { /* Type setting */ |
| 872 | *tmp = '\0'; |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 873 | arg->type = strdup(tmp + 1); |
| 874 | if (arg->type == NULL) |
| 875 | return -ENOMEM; |
Masami Hiramatsu | 11a1ca3 | 2010-04-12 13:17:22 -0400 | [diff] [blame] | 876 | pr_debug("type:%s ", arg->type); |
| 877 | } |
| 878 | |
Masami Hiramatsu | b2a3c12 | 2010-05-19 15:57:42 -0400 | [diff] [blame] | 879 | tmp = strpbrk(str, "-.["); |
Masami Hiramatsu | 7df2f32 | 2010-03-16 18:06:26 -0400 | [diff] [blame] | 880 | if (!is_c_varname(str) || !tmp) { |
| 881 | /* A variable, register, symbol or special value */ |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 882 | arg->var = strdup(str); |
| 883 | if (arg->var == NULL) |
| 884 | return -ENOMEM; |
Masami Hiramatsu | 4848193 | 2010-04-12 13:16:53 -0400 | [diff] [blame] | 885 | pr_debug("%s\n", arg->var); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 886 | return 0; |
Masami Hiramatsu | 7df2f32 | 2010-03-16 18:06:26 -0400 | [diff] [blame] | 887 | } |
| 888 | |
Masami Hiramatsu | b2a3c12 | 2010-05-19 15:57:42 -0400 | [diff] [blame] | 889 | /* Structure fields or array element */ |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 890 | arg->var = strndup(str, tmp - str); |
| 891 | if (arg->var == NULL) |
| 892 | return -ENOMEM; |
Masami Hiramatsu | b2a3c12 | 2010-05-19 15:57:42 -0400 | [diff] [blame] | 893 | goodname = arg->var; |
Masami Hiramatsu | 4848193 | 2010-04-12 13:16:53 -0400 | [diff] [blame] | 894 | pr_debug("%s, ", arg->var); |
Masami Hiramatsu | 7df2f32 | 2010-03-16 18:06:26 -0400 | [diff] [blame] | 895 | fieldp = &arg->field; |
| 896 | |
| 897 | do { |
Masami Hiramatsu | e334016f1 | 2010-04-12 13:17:49 -0400 | [diff] [blame] | 898 | *fieldp = zalloc(sizeof(struct perf_probe_arg_field)); |
| 899 | if (*fieldp == NULL) |
| 900 | return -ENOMEM; |
Masami Hiramatsu | b2a3c12 | 2010-05-19 15:57:42 -0400 | [diff] [blame] | 901 | if (*tmp == '[') { /* Array */ |
| 902 | str = tmp; |
| 903 | (*fieldp)->index = strtol(str + 1, &tmp, 0); |
Masami Hiramatsu | 7df2f32 | 2010-03-16 18:06:26 -0400 | [diff] [blame] | 904 | (*fieldp)->ref = true; |
Masami Hiramatsu | b2a3c12 | 2010-05-19 15:57:42 -0400 | [diff] [blame] | 905 | if (*tmp != ']' || tmp == str + 1) { |
| 906 | semantic_error("Array index must be a" |
| 907 | " number.\n"); |
| 908 | return -EINVAL; |
| 909 | } |
| 910 | tmp++; |
| 911 | if (*tmp == '\0') |
| 912 | tmp = NULL; |
| 913 | } else { /* Structure */ |
| 914 | if (*tmp == '.') { |
| 915 | str = tmp + 1; |
| 916 | (*fieldp)->ref = false; |
| 917 | } else if (tmp[1] == '>') { |
| 918 | str = tmp + 2; |
| 919 | (*fieldp)->ref = true; |
| 920 | } else { |
| 921 | semantic_error("Argument parse error: %s\n", |
| 922 | str); |
| 923 | return -EINVAL; |
| 924 | } |
| 925 | tmp = strpbrk(str, "-.["); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 926 | } |
Masami Hiramatsu | 7df2f32 | 2010-03-16 18:06:26 -0400 | [diff] [blame] | 927 | if (tmp) { |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 928 | (*fieldp)->name = strndup(str, tmp - str); |
| 929 | if ((*fieldp)->name == NULL) |
| 930 | return -ENOMEM; |
Masami Hiramatsu | b2a3c12 | 2010-05-19 15:57:42 -0400 | [diff] [blame] | 931 | if (*str != '[') |
| 932 | goodname = (*fieldp)->name; |
Masami Hiramatsu | 7df2f32 | 2010-03-16 18:06:26 -0400 | [diff] [blame] | 933 | pr_debug("%s(%d), ", (*fieldp)->name, (*fieldp)->ref); |
| 934 | fieldp = &(*fieldp)->next; |
| 935 | } |
| 936 | } while (tmp); |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 937 | (*fieldp)->name = strdup(str); |
| 938 | if ((*fieldp)->name == NULL) |
| 939 | return -ENOMEM; |
Masami Hiramatsu | b2a3c12 | 2010-05-19 15:57:42 -0400 | [diff] [blame] | 940 | if (*str != '[') |
| 941 | goodname = (*fieldp)->name; |
Masami Hiramatsu | 7df2f32 | 2010-03-16 18:06:26 -0400 | [diff] [blame] | 942 | pr_debug("%s(%d)\n", (*fieldp)->name, (*fieldp)->ref); |
Masami Hiramatsu | df0faf4 | 2010-04-12 13:17:00 -0400 | [diff] [blame] | 943 | |
Masami Hiramatsu | b2a3c12 | 2010-05-19 15:57:42 -0400 | [diff] [blame] | 944 | /* If no name is specified, set the last field name (not array index)*/ |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 945 | if (!arg->name) { |
Masami Hiramatsu | b2a3c12 | 2010-05-19 15:57:42 -0400 | [diff] [blame] | 946 | arg->name = strdup(goodname); |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 947 | if (arg->name == NULL) |
| 948 | return -ENOMEM; |
| 949 | } |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 950 | return 0; |
Masami Hiramatsu | 7df2f32 | 2010-03-16 18:06:26 -0400 | [diff] [blame] | 951 | } |
| 952 | |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 953 | /* Parse perf-probe event command */ |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 954 | int parse_perf_probe_command(const char *cmd, struct perf_probe_event *pev) |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 955 | { |
Masami Hiramatsu | e1c01d6 | 2009-11-30 19:20:05 -0500 | [diff] [blame] | 956 | char **argv; |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 957 | int argc, i, ret = 0; |
Masami Hiramatsu | fac13fd | 2009-12-15 10:31:14 -0500 | [diff] [blame] | 958 | |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 959 | argv = argv_split(cmd, &argc); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 960 | if (!argv) { |
| 961 | pr_debug("Failed to split arguments.\n"); |
| 962 | return -ENOMEM; |
| 963 | } |
| 964 | if (argc - 1 > MAX_PROBE_ARGS) { |
| 965 | semantic_error("Too many probe arguments (%d).\n", argc - 1); |
| 966 | ret = -ERANGE; |
| 967 | goto out; |
| 968 | } |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 969 | /* Parse probe point */ |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 970 | ret = parse_perf_probe_point(argv[0], pev); |
| 971 | if (ret < 0) |
| 972 | goto out; |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 973 | |
Masami Hiramatsu | e1c01d6 | 2009-11-30 19:20:05 -0500 | [diff] [blame] | 974 | /* Copy arguments and ensure return probe has no C argument */ |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 975 | pev->nargs = argc - 1; |
Masami Hiramatsu | e334016f1 | 2010-04-12 13:17:49 -0400 | [diff] [blame] | 976 | pev->args = zalloc(sizeof(struct perf_probe_arg) * pev->nargs); |
| 977 | if (pev->args == NULL) { |
| 978 | ret = -ENOMEM; |
| 979 | goto out; |
| 980 | } |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 981 | for (i = 0; i < pev->nargs && ret >= 0; i++) { |
| 982 | ret = parse_perf_probe_arg(argv[i + 1], &pev->args[i]); |
| 983 | if (ret >= 0 && |
| 984 | is_c_varname(pev->args[i].var) && pev->point.retprobe) { |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 985 | semantic_error("You can't specify local variable for" |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 986 | " kretprobe.\n"); |
| 987 | ret = -EINVAL; |
| 988 | } |
Masami Hiramatsu | e1c01d6 | 2009-11-30 19:20:05 -0500 | [diff] [blame] | 989 | } |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 990 | out: |
Masami Hiramatsu | e1c01d6 | 2009-11-30 19:20:05 -0500 | [diff] [blame] | 991 | argv_free(argv); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 992 | |
| 993 | return ret; |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 994 | } |
| 995 | |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 996 | /* Return true if this perf_probe_event requires debuginfo */ |
| 997 | bool perf_probe_event_need_dwarf(struct perf_probe_event *pev) |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 998 | { |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 999 | int i; |
| 1000 | |
| 1001 | if (pev->point.file || pev->point.line || pev->point.lazy_line) |
| 1002 | return true; |
| 1003 | |
| 1004 | for (i = 0; i < pev->nargs; i++) |
Masami Hiramatsu | 4848193 | 2010-04-12 13:16:53 -0400 | [diff] [blame] | 1005 | if (is_c_varname(pev->args[i].var)) |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1006 | return true; |
| 1007 | |
| 1008 | return false; |
| 1009 | } |
| 1010 | |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1011 | /* Parse probe_events event into struct probe_point */ |
| 1012 | static int parse_probe_trace_command(const char *cmd, |
| 1013 | struct probe_trace_event *tev) |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1014 | { |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1015 | struct probe_trace_point *tp = &tev->point; |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1016 | char pr; |
| 1017 | char *p; |
| 1018 | int ret, i, argc; |
| 1019 | char **argv; |
| 1020 | |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1021 | pr_debug("Parsing probe_events: %s\n", cmd); |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1022 | argv = argv_split(cmd, &argc); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1023 | if (!argv) { |
| 1024 | pr_debug("Failed to split arguments.\n"); |
| 1025 | return -ENOMEM; |
| 1026 | } |
| 1027 | if (argc < 2) { |
| 1028 | semantic_error("Too few probe arguments.\n"); |
| 1029 | ret = -ERANGE; |
| 1030 | goto out; |
| 1031 | } |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1032 | |
| 1033 | /* Scan event and group name. */ |
Liming Wang | 93aaa45 | 2009-12-02 16:42:54 +0800 | [diff] [blame] | 1034 | ret = sscanf(argv[0], "%c:%a[^/ \t]/%a[^ \t]", |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1035 | &pr, (float *)(void *)&tev->group, |
| 1036 | (float *)(void *)&tev->event); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1037 | if (ret != 3) { |
| 1038 | semantic_error("Failed to parse event name: %s\n", argv[0]); |
| 1039 | ret = -EINVAL; |
| 1040 | goto out; |
| 1041 | } |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1042 | pr_debug("Group:%s Event:%s probe:%c\n", tev->group, tev->event, pr); |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1043 | |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1044 | tp->retprobe = (pr == 'r'); |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1045 | |
| 1046 | /* Scan function name and offset */ |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1047 | ret = sscanf(argv[1], "%a[^+]+%lu", (float *)(void *)&tp->symbol, |
| 1048 | &tp->offset); |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1049 | if (ret == 1) |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1050 | tp->offset = 0; |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1051 | |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1052 | tev->nargs = argc - 2; |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1053 | tev->args = zalloc(sizeof(struct probe_trace_arg) * tev->nargs); |
Masami Hiramatsu | e334016f1 | 2010-04-12 13:17:49 -0400 | [diff] [blame] | 1054 | if (tev->args == NULL) { |
| 1055 | ret = -ENOMEM; |
| 1056 | goto out; |
| 1057 | } |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1058 | for (i = 0; i < tev->nargs; i++) { |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1059 | p = strchr(argv[i + 2], '='); |
| 1060 | if (p) /* We don't need which register is assigned. */ |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1061 | *p++ = '\0'; |
| 1062 | else |
| 1063 | p = argv[i + 2]; |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 1064 | tev->args[i].name = strdup(argv[i + 2]); |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1065 | /* TODO: parse regs and offset */ |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 1066 | tev->args[i].value = strdup(p); |
| 1067 | if (tev->args[i].name == NULL || tev->args[i].value == NULL) { |
| 1068 | ret = -ENOMEM; |
| 1069 | goto out; |
| 1070 | } |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1071 | } |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1072 | ret = 0; |
| 1073 | out: |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1074 | argv_free(argv); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1075 | return ret; |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1076 | } |
| 1077 | |
Masami Hiramatsu | 7df2f32 | 2010-03-16 18:06:26 -0400 | [diff] [blame] | 1078 | /* Compose only probe arg */ |
| 1079 | int synthesize_perf_probe_arg(struct perf_probe_arg *pa, char *buf, size_t len) |
| 1080 | { |
| 1081 | struct perf_probe_arg_field *field = pa->field; |
| 1082 | int ret; |
| 1083 | char *tmp = buf; |
| 1084 | |
Masami Hiramatsu | 4848193 | 2010-04-12 13:16:53 -0400 | [diff] [blame] | 1085 | if (pa->name && pa->var) |
| 1086 | ret = e_snprintf(tmp, len, "%s=%s", pa->name, pa->var); |
| 1087 | else |
| 1088 | ret = e_snprintf(tmp, len, "%s", pa->name ? pa->name : pa->var); |
Masami Hiramatsu | 7df2f32 | 2010-03-16 18:06:26 -0400 | [diff] [blame] | 1089 | if (ret <= 0) |
| 1090 | goto error; |
| 1091 | tmp += ret; |
| 1092 | len -= ret; |
| 1093 | |
| 1094 | while (field) { |
Masami Hiramatsu | b2a3c12 | 2010-05-19 15:57:42 -0400 | [diff] [blame] | 1095 | if (field->name[0] == '[') |
| 1096 | ret = e_snprintf(tmp, len, "%s", field->name); |
| 1097 | else |
| 1098 | ret = e_snprintf(tmp, len, "%s%s", |
| 1099 | field->ref ? "->" : ".", field->name); |
Masami Hiramatsu | 7df2f32 | 2010-03-16 18:06:26 -0400 | [diff] [blame] | 1100 | if (ret <= 0) |
| 1101 | goto error; |
| 1102 | tmp += ret; |
| 1103 | len -= ret; |
| 1104 | field = field->next; |
| 1105 | } |
Masami Hiramatsu | 11a1ca3 | 2010-04-12 13:17:22 -0400 | [diff] [blame] | 1106 | |
| 1107 | if (pa->type) { |
| 1108 | ret = e_snprintf(tmp, len, ":%s", pa->type); |
| 1109 | if (ret <= 0) |
| 1110 | goto error; |
| 1111 | tmp += ret; |
| 1112 | len -= ret; |
| 1113 | } |
| 1114 | |
Masami Hiramatsu | 7df2f32 | 2010-03-16 18:06:26 -0400 | [diff] [blame] | 1115 | return tmp - buf; |
| 1116 | error: |
Masami Hiramatsu | 0e43e5d | 2010-12-17 22:12:11 +0900 | [diff] [blame] | 1117 | pr_debug("Failed to synthesize perf probe argument: %s\n", |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1118 | strerror(-ret)); |
| 1119 | return ret; |
Masami Hiramatsu | 7df2f32 | 2010-03-16 18:06:26 -0400 | [diff] [blame] | 1120 | } |
| 1121 | |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1122 | /* Compose only probe point (not argument) */ |
| 1123 | static char *synthesize_perf_probe_point(struct perf_probe_point *pp) |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 1124 | { |
Masami Hiramatsu | fb1587d | 2010-03-16 18:06:19 -0400 | [diff] [blame] | 1125 | char *buf, *tmp; |
| 1126 | char offs[32] = "", line[32] = "", file[32] = ""; |
| 1127 | int ret, len; |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 1128 | |
Masami Hiramatsu | e334016f1 | 2010-04-12 13:17:49 -0400 | [diff] [blame] | 1129 | buf = zalloc(MAX_CMDLEN); |
| 1130 | if (buf == NULL) { |
| 1131 | ret = -ENOMEM; |
| 1132 | goto error; |
| 1133 | } |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1134 | if (pp->offset) { |
Masami Hiramatsu | fb1587d | 2010-03-16 18:06:19 -0400 | [diff] [blame] | 1135 | ret = e_snprintf(offs, 32, "+%lu", pp->offset); |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1136 | if (ret <= 0) |
| 1137 | goto error; |
| 1138 | } |
| 1139 | if (pp->line) { |
Masami Hiramatsu | fb1587d | 2010-03-16 18:06:19 -0400 | [diff] [blame] | 1140 | ret = e_snprintf(line, 32, ":%d", pp->line); |
| 1141 | if (ret <= 0) |
| 1142 | goto error; |
| 1143 | } |
| 1144 | if (pp->file) { |
Franck Bui-Huu | 32ae2ad | 2010-12-23 16:04:23 +0100 | [diff] [blame] | 1145 | tmp = pp->file; |
| 1146 | len = strlen(tmp); |
| 1147 | if (len > 30) { |
| 1148 | tmp = strchr(pp->file + len - 30, '/'); |
| 1149 | tmp = tmp ? tmp + 1 : pp->file + len - 30; |
| 1150 | } |
| 1151 | ret = e_snprintf(file, 32, "@%s", tmp); |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1152 | if (ret <= 0) |
| 1153 | goto error; |
| 1154 | } |
| 1155 | |
| 1156 | if (pp->function) |
Masami Hiramatsu | fb1587d | 2010-03-16 18:06:19 -0400 | [diff] [blame] | 1157 | ret = e_snprintf(buf, MAX_CMDLEN, "%s%s%s%s%s", pp->function, |
| 1158 | offs, pp->retprobe ? "%return" : "", line, |
| 1159 | file); |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1160 | else |
Masami Hiramatsu | fb1587d | 2010-03-16 18:06:19 -0400 | [diff] [blame] | 1161 | ret = e_snprintf(buf, MAX_CMDLEN, "%s%s", file, line); |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1162 | if (ret <= 0) |
| 1163 | goto error; |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1164 | |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1165 | return buf; |
| 1166 | error: |
Masami Hiramatsu | 0e43e5d | 2010-12-17 22:12:11 +0900 | [diff] [blame] | 1167 | pr_debug("Failed to synthesize perf probe point: %s\n", |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1168 | strerror(-ret)); |
Masami Hiramatsu | e334016f1 | 2010-04-12 13:17:49 -0400 | [diff] [blame] | 1169 | if (buf) |
| 1170 | free(buf); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1171 | return NULL; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1172 | } |
| 1173 | |
| 1174 | #if 0 |
| 1175 | char *synthesize_perf_probe_command(struct perf_probe_event *pev) |
| 1176 | { |
| 1177 | char *buf; |
| 1178 | int i, len, ret; |
| 1179 | |
| 1180 | buf = synthesize_perf_probe_point(&pev->point); |
| 1181 | if (!buf) |
| 1182 | return NULL; |
| 1183 | |
| 1184 | len = strlen(buf); |
| 1185 | for (i = 0; i < pev->nargs; i++) { |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1186 | ret = e_snprintf(&buf[len], MAX_CMDLEN - len, " %s", |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1187 | pev->args[i].name); |
| 1188 | if (ret <= 0) { |
| 1189 | free(buf); |
| 1190 | return NULL; |
| 1191 | } |
| 1192 | len += ret; |
| 1193 | } |
| 1194 | |
| 1195 | return buf; |
| 1196 | } |
| 1197 | #endif |
| 1198 | |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1199 | static int __synthesize_probe_trace_arg_ref(struct probe_trace_arg_ref *ref, |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1200 | char **buf, size_t *buflen, |
| 1201 | int depth) |
| 1202 | { |
| 1203 | int ret; |
| 1204 | if (ref->next) { |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1205 | depth = __synthesize_probe_trace_arg_ref(ref->next, buf, |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1206 | buflen, depth + 1); |
| 1207 | if (depth < 0) |
| 1208 | goto out; |
| 1209 | } |
| 1210 | |
| 1211 | ret = e_snprintf(*buf, *buflen, "%+ld(", ref->offset); |
| 1212 | if (ret < 0) |
| 1213 | depth = ret; |
| 1214 | else { |
| 1215 | *buf += ret; |
| 1216 | *buflen -= ret; |
| 1217 | } |
| 1218 | out: |
| 1219 | return depth; |
| 1220 | |
| 1221 | } |
| 1222 | |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1223 | static int synthesize_probe_trace_arg(struct probe_trace_arg *arg, |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1224 | char *buf, size_t buflen) |
| 1225 | { |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1226 | struct probe_trace_arg_ref *ref = arg->ref; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1227 | int ret, depth = 0; |
| 1228 | char *tmp = buf; |
| 1229 | |
| 1230 | /* Argument name or separator */ |
| 1231 | if (arg->name) |
| 1232 | ret = e_snprintf(buf, buflen, " %s=", arg->name); |
| 1233 | else |
| 1234 | ret = e_snprintf(buf, buflen, " "); |
| 1235 | if (ret < 0) |
| 1236 | return ret; |
| 1237 | buf += ret; |
| 1238 | buflen -= ret; |
| 1239 | |
Masami Hiramatsu | b7dcb85 | 2010-05-19 15:57:49 -0400 | [diff] [blame] | 1240 | /* Special case: @XXX */ |
| 1241 | if (arg->value[0] == '@' && arg->ref) |
| 1242 | ref = ref->next; |
| 1243 | |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1244 | /* Dereferencing arguments */ |
Masami Hiramatsu | b7dcb85 | 2010-05-19 15:57:49 -0400 | [diff] [blame] | 1245 | if (ref) { |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1246 | depth = __synthesize_probe_trace_arg_ref(ref, &buf, |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1247 | &buflen, 1); |
| 1248 | if (depth < 0) |
| 1249 | return depth; |
| 1250 | } |
| 1251 | |
| 1252 | /* Print argument value */ |
Masami Hiramatsu | b7dcb85 | 2010-05-19 15:57:49 -0400 | [diff] [blame] | 1253 | if (arg->value[0] == '@' && arg->ref) |
| 1254 | ret = e_snprintf(buf, buflen, "%s%+ld", arg->value, |
| 1255 | arg->ref->offset); |
| 1256 | else |
| 1257 | ret = e_snprintf(buf, buflen, "%s", arg->value); |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1258 | if (ret < 0) |
| 1259 | return ret; |
| 1260 | buf += ret; |
| 1261 | buflen -= ret; |
| 1262 | |
| 1263 | /* Closing */ |
| 1264 | while (depth--) { |
| 1265 | ret = e_snprintf(buf, buflen, ")"); |
| 1266 | if (ret < 0) |
| 1267 | return ret; |
| 1268 | buf += ret; |
| 1269 | buflen -= ret; |
| 1270 | } |
Masami Hiramatsu | 4984912 | 2010-04-12 13:17:15 -0400 | [diff] [blame] | 1271 | /* Print argument type */ |
| 1272 | if (arg->type) { |
| 1273 | ret = e_snprintf(buf, buflen, ":%s", arg->type); |
| 1274 | if (ret <= 0) |
| 1275 | return ret; |
| 1276 | buf += ret; |
| 1277 | } |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1278 | |
| 1279 | return buf - tmp; |
| 1280 | } |
| 1281 | |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1282 | char *synthesize_probe_trace_command(struct probe_trace_event *tev) |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1283 | { |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1284 | struct probe_trace_point *tp = &tev->point; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1285 | char *buf; |
| 1286 | int i, len, ret; |
| 1287 | |
Masami Hiramatsu | e334016f1 | 2010-04-12 13:17:49 -0400 | [diff] [blame] | 1288 | buf = zalloc(MAX_CMDLEN); |
| 1289 | if (buf == NULL) |
| 1290 | return NULL; |
| 1291 | |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1292 | len = e_snprintf(buf, MAX_CMDLEN, "%c:%s/%s %s+%lu", |
| 1293 | tp->retprobe ? 'r' : 'p', |
| 1294 | tev->group, tev->event, |
| 1295 | tp->symbol, tp->offset); |
| 1296 | if (len <= 0) |
| 1297 | goto error; |
| 1298 | |
| 1299 | for (i = 0; i < tev->nargs; i++) { |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1300 | ret = synthesize_probe_trace_arg(&tev->args[i], buf + len, |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1301 | MAX_CMDLEN - len); |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1302 | if (ret <= 0) |
| 1303 | goto error; |
| 1304 | len += ret; |
| 1305 | } |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1306 | |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1307 | return buf; |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1308 | error: |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1309 | free(buf); |
| 1310 | return NULL; |
| 1311 | } |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1312 | |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1313 | static int convert_to_perf_probe_event(struct probe_trace_event *tev, |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 1314 | struct perf_probe_event *pev) |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1315 | { |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 1316 | char buf[64] = ""; |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1317 | int i, ret; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1318 | |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 1319 | /* Convert event/group name */ |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 1320 | pev->event = strdup(tev->event); |
| 1321 | pev->group = strdup(tev->group); |
| 1322 | if (pev->event == NULL || pev->group == NULL) |
| 1323 | return -ENOMEM; |
Masami Hiramatsu | fb1587d | 2010-03-16 18:06:19 -0400 | [diff] [blame] | 1324 | |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 1325 | /* Convert trace_point to probe_point */ |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1326 | ret = kprobe_convert_to_perf_probe(&tev->point, &pev->point); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1327 | if (ret < 0) |
| 1328 | return ret; |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 1329 | |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1330 | /* Convert trace_arg to probe_arg */ |
| 1331 | pev->nargs = tev->nargs; |
Masami Hiramatsu | e334016f1 | 2010-04-12 13:17:49 -0400 | [diff] [blame] | 1332 | pev->args = zalloc(sizeof(struct perf_probe_arg) * pev->nargs); |
| 1333 | if (pev->args == NULL) |
| 1334 | return -ENOMEM; |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 1335 | for (i = 0; i < tev->nargs && ret >= 0; i++) { |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1336 | if (tev->args[i].name) |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 1337 | pev->args[i].name = strdup(tev->args[i].name); |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1338 | else { |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1339 | ret = synthesize_probe_trace_arg(&tev->args[i], |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1340 | buf, 64); |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 1341 | pev->args[i].name = strdup(buf); |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1342 | } |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 1343 | if (pev->args[i].name == NULL && ret >= 0) |
| 1344 | ret = -ENOMEM; |
| 1345 | } |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1346 | |
| 1347 | if (ret < 0) |
| 1348 | clear_perf_probe_event(pev); |
| 1349 | |
| 1350 | return ret; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1351 | } |
| 1352 | |
| 1353 | void clear_perf_probe_event(struct perf_probe_event *pev) |
| 1354 | { |
| 1355 | struct perf_probe_point *pp = &pev->point; |
Masami Hiramatsu | 7df2f32 | 2010-03-16 18:06:26 -0400 | [diff] [blame] | 1356 | struct perf_probe_arg_field *field, *next; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1357 | int i; |
| 1358 | |
| 1359 | if (pev->event) |
| 1360 | free(pev->event); |
| 1361 | if (pev->group) |
| 1362 | free(pev->group); |
| 1363 | if (pp->file) |
| 1364 | free(pp->file); |
| 1365 | if (pp->function) |
| 1366 | free(pp->function); |
| 1367 | if (pp->lazy_line) |
| 1368 | free(pp->lazy_line); |
Masami Hiramatsu | 7df2f32 | 2010-03-16 18:06:26 -0400 | [diff] [blame] | 1369 | for (i = 0; i < pev->nargs; i++) { |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1370 | if (pev->args[i].name) |
| 1371 | free(pev->args[i].name); |
Masami Hiramatsu | 4848193 | 2010-04-12 13:16:53 -0400 | [diff] [blame] | 1372 | if (pev->args[i].var) |
| 1373 | free(pev->args[i].var); |
Masami Hiramatsu | 11a1ca3 | 2010-04-12 13:17:22 -0400 | [diff] [blame] | 1374 | if (pev->args[i].type) |
| 1375 | free(pev->args[i].type); |
Masami Hiramatsu | 7df2f32 | 2010-03-16 18:06:26 -0400 | [diff] [blame] | 1376 | field = pev->args[i].field; |
| 1377 | while (field) { |
| 1378 | next = field->next; |
| 1379 | if (field->name) |
| 1380 | free(field->name); |
| 1381 | free(field); |
| 1382 | field = next; |
| 1383 | } |
| 1384 | } |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1385 | if (pev->args) |
| 1386 | free(pev->args); |
| 1387 | memset(pev, 0, sizeof(*pev)); |
| 1388 | } |
| 1389 | |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1390 | static void clear_probe_trace_event(struct probe_trace_event *tev) |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1391 | { |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1392 | struct probe_trace_arg_ref *ref, *next; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1393 | int i; |
| 1394 | |
| 1395 | if (tev->event) |
| 1396 | free(tev->event); |
| 1397 | if (tev->group) |
| 1398 | free(tev->group); |
| 1399 | if (tev->point.symbol) |
| 1400 | free(tev->point.symbol); |
| 1401 | for (i = 0; i < tev->nargs; i++) { |
| 1402 | if (tev->args[i].name) |
| 1403 | free(tev->args[i].name); |
| 1404 | if (tev->args[i].value) |
| 1405 | free(tev->args[i].value); |
Masami Hiramatsu | 4984912 | 2010-04-12 13:17:15 -0400 | [diff] [blame] | 1406 | if (tev->args[i].type) |
| 1407 | free(tev->args[i].type); |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1408 | ref = tev->args[i].ref; |
| 1409 | while (ref) { |
| 1410 | next = ref->next; |
| 1411 | free(ref); |
| 1412 | ref = next; |
| 1413 | } |
| 1414 | } |
| 1415 | if (tev->args) |
| 1416 | free(tev->args); |
| 1417 | memset(tev, 0, sizeof(*tev)); |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1418 | } |
| 1419 | |
Masami Hiramatsu | f4d7da4 | 2010-03-16 18:06:05 -0400 | [diff] [blame] | 1420 | static int open_kprobe_events(bool readwrite) |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1421 | { |
| 1422 | char buf[PATH_MAX]; |
Masami Hiramatsu | 7ca5989 | 2010-04-14 18:39:28 -0400 | [diff] [blame] | 1423 | const char *__debugfs; |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1424 | int ret; |
| 1425 | |
Masami Hiramatsu | 7ca5989 | 2010-04-14 18:39:28 -0400 | [diff] [blame] | 1426 | __debugfs = debugfs_find_mountpoint(); |
| 1427 | if (__debugfs == NULL) { |
| 1428 | pr_warning("Debugfs is not mounted.\n"); |
| 1429 | return -ENOENT; |
| 1430 | } |
| 1431 | |
| 1432 | ret = e_snprintf(buf, PATH_MAX, "%stracing/kprobe_events", __debugfs); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1433 | if (ret >= 0) { |
Masami Hiramatsu | 7ca5989 | 2010-04-14 18:39:28 -0400 | [diff] [blame] | 1434 | pr_debug("Opening %s write=%d\n", buf, readwrite); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1435 | if (readwrite && !probe_event_dry_run) |
| 1436 | ret = open(buf, O_RDWR, O_APPEND); |
| 1437 | else |
| 1438 | ret = open(buf, O_RDONLY, 0); |
| 1439 | } |
Masami Hiramatsu | f4d7da4 | 2010-03-16 18:06:05 -0400 | [diff] [blame] | 1440 | |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1441 | if (ret < 0) { |
| 1442 | if (errno == ENOENT) |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1443 | pr_warning("kprobe_events file does not exist - please" |
| 1444 | " rebuild kernel with CONFIG_KPROBE_EVENT.\n"); |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1445 | else |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1446 | pr_warning("Failed to open kprobe_events file: %s\n", |
| 1447 | strerror(errno)); |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1448 | } |
| 1449 | return ret; |
| 1450 | } |
| 1451 | |
| 1452 | /* Get raw string list of current kprobe_events */ |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1453 | static struct strlist *get_probe_trace_command_rawlist(int fd) |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1454 | { |
| 1455 | int ret, idx; |
| 1456 | FILE *fp; |
| 1457 | char buf[MAX_CMDLEN]; |
| 1458 | char *p; |
| 1459 | struct strlist *sl; |
| 1460 | |
| 1461 | sl = strlist__new(true, NULL); |
| 1462 | |
| 1463 | fp = fdopen(dup(fd), "r"); |
| 1464 | while (!feof(fp)) { |
| 1465 | p = fgets(buf, MAX_CMDLEN, fp); |
| 1466 | if (!p) |
| 1467 | break; |
| 1468 | |
| 1469 | idx = strlen(p) - 1; |
| 1470 | if (p[idx] == '\n') |
| 1471 | p[idx] = '\0'; |
| 1472 | ret = strlist__add(sl, buf); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1473 | if (ret < 0) { |
| 1474 | pr_debug("strlist__add failed: %s\n", strerror(-ret)); |
| 1475 | strlist__delete(sl); |
| 1476 | return NULL; |
| 1477 | } |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1478 | } |
| 1479 | fclose(fp); |
| 1480 | |
| 1481 | return sl; |
| 1482 | } |
| 1483 | |
Masami Hiramatsu | 278498d | 2009-12-08 17:02:40 -0500 | [diff] [blame] | 1484 | /* Show an event */ |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1485 | static int show_perf_probe_event(struct perf_probe_event *pev) |
Masami Hiramatsu | 278498d | 2009-12-08 17:02:40 -0500 | [diff] [blame] | 1486 | { |
Masami Hiramatsu | 7e990a5 | 2009-12-15 10:31:21 -0500 | [diff] [blame] | 1487 | int i, ret; |
Masami Hiramatsu | 278498d | 2009-12-08 17:02:40 -0500 | [diff] [blame] | 1488 | char buf[128]; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1489 | char *place; |
Masami Hiramatsu | 278498d | 2009-12-08 17:02:40 -0500 | [diff] [blame] | 1490 | |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1491 | /* Synthesize only event probe point */ |
| 1492 | place = synthesize_perf_probe_point(&pev->point); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1493 | if (!place) |
| 1494 | return -EINVAL; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1495 | |
| 1496 | ret = e_snprintf(buf, 128, "%s:%s", pev->group, pev->event); |
Masami Hiramatsu | 7e990a5 | 2009-12-15 10:31:21 -0500 | [diff] [blame] | 1497 | if (ret < 0) |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1498 | return ret; |
| 1499 | |
Masami Hiramatsu | fb1587d | 2010-03-16 18:06:19 -0400 | [diff] [blame] | 1500 | printf(" %-20s (on %s", buf, place); |
Masami Hiramatsu | 278498d | 2009-12-08 17:02:40 -0500 | [diff] [blame] | 1501 | |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1502 | if (pev->nargs > 0) { |
Masami Hiramatsu | 278498d | 2009-12-08 17:02:40 -0500 | [diff] [blame] | 1503 | printf(" with"); |
Masami Hiramatsu | 7df2f32 | 2010-03-16 18:06:26 -0400 | [diff] [blame] | 1504 | for (i = 0; i < pev->nargs; i++) { |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1505 | ret = synthesize_perf_probe_arg(&pev->args[i], |
| 1506 | buf, 128); |
| 1507 | if (ret < 0) |
| 1508 | break; |
Masami Hiramatsu | 7df2f32 | 2010-03-16 18:06:26 -0400 | [diff] [blame] | 1509 | printf(" %s", buf); |
| 1510 | } |
Masami Hiramatsu | 278498d | 2009-12-08 17:02:40 -0500 | [diff] [blame] | 1511 | } |
| 1512 | printf(")\n"); |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1513 | free(place); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1514 | return ret; |
Masami Hiramatsu | 278498d | 2009-12-08 17:02:40 -0500 | [diff] [blame] | 1515 | } |
| 1516 | |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1517 | /* List up current perf-probe events */ |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1518 | int show_perf_probe_events(void) |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1519 | { |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1520 | int fd, ret; |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1521 | struct probe_trace_event tev; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1522 | struct perf_probe_event pev; |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1523 | struct strlist *rawlist; |
| 1524 | struct str_node *ent; |
| 1525 | |
Masami Hiramatsu | 7204133 | 2010-01-05 17:47:10 -0500 | [diff] [blame] | 1526 | setup_pager(); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1527 | ret = init_vmlinux(); |
| 1528 | if (ret < 0) |
| 1529 | return ret; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1530 | |
| 1531 | memset(&tev, 0, sizeof(tev)); |
| 1532 | memset(&pev, 0, sizeof(pev)); |
Masami Hiramatsu | 7204133 | 2010-01-05 17:47:10 -0500 | [diff] [blame] | 1533 | |
Masami Hiramatsu | f4d7da4 | 2010-03-16 18:06:05 -0400 | [diff] [blame] | 1534 | fd = open_kprobe_events(false); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1535 | if (fd < 0) |
| 1536 | return fd; |
| 1537 | |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1538 | rawlist = get_probe_trace_command_rawlist(fd); |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1539 | close(fd); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1540 | if (!rawlist) |
| 1541 | return -ENOENT; |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1542 | |
Masami Hiramatsu | adf365f | 2009-12-15 10:32:03 -0500 | [diff] [blame] | 1543 | strlist__for_each(ent, rawlist) { |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1544 | ret = parse_probe_trace_command(ent->s, &tev); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1545 | if (ret >= 0) { |
| 1546 | ret = convert_to_perf_probe_event(&tev, &pev); |
| 1547 | if (ret >= 0) |
| 1548 | ret = show_perf_probe_event(&pev); |
| 1549 | } |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1550 | clear_perf_probe_event(&pev); |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1551 | clear_probe_trace_event(&tev); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1552 | if (ret < 0) |
| 1553 | break; |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1554 | } |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1555 | strlist__delete(rawlist); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1556 | |
| 1557 | return ret; |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 1558 | } |
| 1559 | |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 1560 | /* Get current perf-probe event names */ |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1561 | static struct strlist *get_probe_trace_event_names(int fd, bool include_group) |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 1562 | { |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 1563 | char buf[128]; |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 1564 | struct strlist *sl, *rawlist; |
| 1565 | struct str_node *ent; |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1566 | struct probe_trace_event tev; |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1567 | int ret = 0; |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 1568 | |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1569 | memset(&tev, 0, sizeof(tev)); |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1570 | rawlist = get_probe_trace_command_rawlist(fd); |
Masami Hiramatsu | e1d2017 | 2009-12-07 12:00:46 -0500 | [diff] [blame] | 1571 | sl = strlist__new(true, NULL); |
Masami Hiramatsu | adf365f | 2009-12-15 10:32:03 -0500 | [diff] [blame] | 1572 | strlist__for_each(ent, rawlist) { |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1573 | ret = parse_probe_trace_command(ent->s, &tev); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1574 | if (ret < 0) |
| 1575 | break; |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 1576 | if (include_group) { |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1577 | ret = e_snprintf(buf, 128, "%s:%s", tev.group, |
| 1578 | tev.event); |
| 1579 | if (ret >= 0) |
| 1580 | ret = strlist__add(sl, buf); |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 1581 | } else |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1582 | ret = strlist__add(sl, tev.event); |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1583 | clear_probe_trace_event(&tev); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1584 | if (ret < 0) |
| 1585 | break; |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 1586 | } |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 1587 | strlist__delete(rawlist); |
| 1588 | |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1589 | if (ret < 0) { |
| 1590 | strlist__delete(sl); |
| 1591 | return NULL; |
| 1592 | } |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 1593 | return sl; |
| 1594 | } |
| 1595 | |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1596 | static int write_probe_trace_event(int fd, struct probe_trace_event *tev) |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 1597 | { |
Frederic Weisbecker | 6eca8cc | 2010-04-21 02:01:05 +0200 | [diff] [blame] | 1598 | int ret = 0; |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1599 | char *buf = synthesize_probe_trace_command(tev); |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 1600 | |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1601 | if (!buf) { |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1602 | pr_debug("Failed to synthesize probe trace event.\n"); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1603 | return -EINVAL; |
| 1604 | } |
| 1605 | |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 1606 | pr_debug("Writing event: %s\n", buf); |
Masami Hiramatsu | f4d7da4 | 2010-03-16 18:06:05 -0400 | [diff] [blame] | 1607 | if (!probe_event_dry_run) { |
| 1608 | ret = write(fd, buf, strlen(buf)); |
| 1609 | if (ret <= 0) |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1610 | pr_warning("Failed to write event: %s\n", |
| 1611 | strerror(errno)); |
Masami Hiramatsu | f4d7da4 | 2010-03-16 18:06:05 -0400 | [diff] [blame] | 1612 | } |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1613 | free(buf); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1614 | return ret; |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 1615 | } |
| 1616 | |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1617 | static int get_new_event_name(char *buf, size_t len, const char *base, |
| 1618 | struct strlist *namelist, bool allow_suffix) |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 1619 | { |
| 1620 | int i, ret; |
Masami Hiramatsu | 17f88fc | 2009-12-08 17:03:02 -0500 | [diff] [blame] | 1621 | |
| 1622 | /* Try no suffix */ |
| 1623 | ret = e_snprintf(buf, len, "%s", base); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1624 | if (ret < 0) { |
| 1625 | pr_debug("snprintf() failed: %s\n", strerror(-ret)); |
| 1626 | return ret; |
| 1627 | } |
Masami Hiramatsu | 17f88fc | 2009-12-08 17:03:02 -0500 | [diff] [blame] | 1628 | if (!strlist__has_entry(namelist, buf)) |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1629 | return 0; |
Masami Hiramatsu | 17f88fc | 2009-12-08 17:03:02 -0500 | [diff] [blame] | 1630 | |
Masami Hiramatsu | d761b08 | 2009-12-15 10:32:25 -0500 | [diff] [blame] | 1631 | if (!allow_suffix) { |
| 1632 | pr_warning("Error: event \"%s\" already exists. " |
| 1633 | "(Use -f to force duplicates.)\n", base); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1634 | return -EEXIST; |
Masami Hiramatsu | d761b08 | 2009-12-15 10:32:25 -0500 | [diff] [blame] | 1635 | } |
| 1636 | |
Masami Hiramatsu | 17f88fc | 2009-12-08 17:03:02 -0500 | [diff] [blame] | 1637 | /* Try to add suffix */ |
| 1638 | for (i = 1; i < MAX_EVENT_INDEX; i++) { |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 1639 | ret = e_snprintf(buf, len, "%s_%d", base, i); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1640 | if (ret < 0) { |
| 1641 | pr_debug("snprintf() failed: %s\n", strerror(-ret)); |
| 1642 | return ret; |
| 1643 | } |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 1644 | if (!strlist__has_entry(namelist, buf)) |
| 1645 | break; |
| 1646 | } |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1647 | if (i == MAX_EVENT_INDEX) { |
| 1648 | pr_warning("Too many events are on the same function.\n"); |
| 1649 | ret = -ERANGE; |
| 1650 | } |
| 1651 | |
| 1652 | return ret; |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 1653 | } |
| 1654 | |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1655 | static int __add_probe_trace_events(struct perf_probe_event *pev, |
| 1656 | struct probe_trace_event *tevs, |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1657 | int ntevs, bool allow_suffix) |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 1658 | { |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1659 | int i, fd, ret; |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1660 | struct probe_trace_event *tev = NULL; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1661 | char buf[64]; |
| 1662 | const char *event, *group; |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 1663 | struct strlist *namelist; |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 1664 | |
Masami Hiramatsu | f4d7da4 | 2010-03-16 18:06:05 -0400 | [diff] [blame] | 1665 | fd = open_kprobe_events(true); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1666 | if (fd < 0) |
| 1667 | return fd; |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 1668 | /* Get current event names */ |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1669 | namelist = get_probe_trace_event_names(fd, false); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1670 | if (!namelist) { |
| 1671 | pr_debug("Failed to get current event list.\n"); |
| 1672 | return -EIO; |
| 1673 | } |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 1674 | |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1675 | ret = 0; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1676 | printf("Add new event%s\n", (ntevs > 1) ? "s:" : ":"); |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 1677 | for (i = 0; i < ntevs; i++) { |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1678 | tev = &tevs[i]; |
| 1679 | if (pev->event) |
| 1680 | event = pev->event; |
| 1681 | else |
| 1682 | if (pev->point.function) |
| 1683 | event = pev->point.function; |
| 1684 | else |
| 1685 | event = tev->point.symbol; |
| 1686 | if (pev->group) |
| 1687 | group = pev->group; |
| 1688 | else |
| 1689 | group = PERFPROBE_GROUP; |
| 1690 | |
| 1691 | /* Get an unused new event name */ |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1692 | ret = get_new_event_name(buf, 64, event, |
| 1693 | namelist, allow_suffix); |
| 1694 | if (ret < 0) |
| 1695 | break; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1696 | event = buf; |
| 1697 | |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 1698 | tev->event = strdup(event); |
| 1699 | tev->group = strdup(group); |
| 1700 | if (tev->event == NULL || tev->group == NULL) { |
| 1701 | ret = -ENOMEM; |
| 1702 | break; |
| 1703 | } |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1704 | ret = write_probe_trace_event(fd, tev); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1705 | if (ret < 0) |
| 1706 | break; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1707 | /* Add added event name to namelist */ |
| 1708 | strlist__add(namelist, event); |
| 1709 | |
| 1710 | /* Trick here - save current event/group */ |
| 1711 | event = pev->event; |
| 1712 | group = pev->group; |
| 1713 | pev->event = tev->event; |
| 1714 | pev->group = tev->group; |
| 1715 | show_perf_probe_event(pev); |
| 1716 | /* Trick here - restore current event/group */ |
| 1717 | pev->event = (char *)event; |
| 1718 | pev->group = (char *)group; |
| 1719 | |
| 1720 | /* |
| 1721 | * Probes after the first probe which comes from same |
| 1722 | * user input are always allowed to add suffix, because |
| 1723 | * there might be several addresses corresponding to |
| 1724 | * one code line. |
| 1725 | */ |
| 1726 | allow_suffix = true; |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 1727 | } |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1728 | |
| 1729 | if (ret >= 0) { |
| 1730 | /* Show how to use the event. */ |
| 1731 | printf("\nYou can now use it on all perf tools, such as:\n\n"); |
| 1732 | printf("\tperf record -e %s:%s -aR sleep 1\n\n", tev->group, |
| 1733 | tev->event); |
| 1734 | } |
Masami Hiramatsu | a9b495b | 2009-12-08 17:02:47 -0500 | [diff] [blame] | 1735 | |
Masami Hiramatsu | e1d2017 | 2009-12-07 12:00:46 -0500 | [diff] [blame] | 1736 | strlist__delete(namelist); |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 1737 | close(fd); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1738 | return ret; |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 1739 | } |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 1740 | |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1741 | static int convert_to_probe_trace_events(struct perf_probe_event *pev, |
| 1742 | struct probe_trace_event **tevs, |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 1743 | int max_tevs, const char *module) |
Masami Hiramatsu | e0faa8d | 2010-03-16 18:05:37 -0400 | [diff] [blame] | 1744 | { |
| 1745 | struct symbol *sym; |
Masami Hiramatsu | e334016f1 | 2010-04-12 13:17:49 -0400 | [diff] [blame] | 1746 | int ret = 0, i; |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1747 | struct probe_trace_event *tev; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1748 | |
Masami Hiramatsu | 4b4da7f | 2010-03-22 13:10:26 -0300 | [diff] [blame] | 1749 | /* Convert perf_probe_event with debuginfo */ |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 1750 | ret = try_to_find_probe_trace_events(pev, tevs, max_tevs, module); |
Masami Hiramatsu | e334016f1 | 2010-04-12 13:17:49 -0400 | [diff] [blame] | 1751 | if (ret != 0) |
| 1752 | return ret; |
Masami Hiramatsu | e0faa8d | 2010-03-16 18:05:37 -0400 | [diff] [blame] | 1753 | |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1754 | /* Allocate trace event buffer */ |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1755 | tev = *tevs = zalloc(sizeof(struct probe_trace_event)); |
Masami Hiramatsu | e334016f1 | 2010-04-12 13:17:49 -0400 | [diff] [blame] | 1756 | if (tev == NULL) |
| 1757 | return -ENOMEM; |
Masami Hiramatsu | e0faa8d | 2010-03-16 18:05:37 -0400 | [diff] [blame] | 1758 | |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1759 | /* Copy parameters */ |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 1760 | tev->point.symbol = strdup(pev->point.function); |
| 1761 | if (tev->point.symbol == NULL) { |
| 1762 | ret = -ENOMEM; |
| 1763 | goto error; |
| 1764 | } |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1765 | tev->point.offset = pev->point.offset; |
Masami Hiramatsu | 04ddd04 | 2010-08-27 20:38:53 +0900 | [diff] [blame] | 1766 | tev->point.retprobe = pev->point.retprobe; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1767 | tev->nargs = pev->nargs; |
| 1768 | if (tev->nargs) { |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1769 | tev->args = zalloc(sizeof(struct probe_trace_arg) |
Masami Hiramatsu | e334016f1 | 2010-04-12 13:17:49 -0400 | [diff] [blame] | 1770 | * tev->nargs); |
| 1771 | if (tev->args == NULL) { |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 1772 | ret = -ENOMEM; |
| 1773 | goto error; |
Masami Hiramatsu | e334016f1 | 2010-04-12 13:17:49 -0400 | [diff] [blame] | 1774 | } |
Masami Hiramatsu | 4848193 | 2010-04-12 13:16:53 -0400 | [diff] [blame] | 1775 | for (i = 0; i < tev->nargs; i++) { |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 1776 | if (pev->args[i].name) { |
| 1777 | tev->args[i].name = strdup(pev->args[i].name); |
| 1778 | if (tev->args[i].name == NULL) { |
| 1779 | ret = -ENOMEM; |
| 1780 | goto error; |
| 1781 | } |
| 1782 | } |
| 1783 | tev->args[i].value = strdup(pev->args[i].var); |
| 1784 | if (tev->args[i].value == NULL) { |
| 1785 | ret = -ENOMEM; |
| 1786 | goto error; |
| 1787 | } |
| 1788 | if (pev->args[i].type) { |
| 1789 | tev->args[i].type = strdup(pev->args[i].type); |
| 1790 | if (tev->args[i].type == NULL) { |
| 1791 | ret = -ENOMEM; |
| 1792 | goto error; |
| 1793 | } |
| 1794 | } |
Masami Hiramatsu | 4848193 | 2010-04-12 13:16:53 -0400 | [diff] [blame] | 1795 | } |
Masami Hiramatsu | e0faa8d | 2010-03-16 18:05:37 -0400 | [diff] [blame] | 1796 | } |
| 1797 | |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1798 | /* Currently just checking function name from symbol map */ |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 1799 | sym = __find_kernel_function_by_name(tev->point.symbol, NULL); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1800 | if (!sym) { |
| 1801 | pr_warning("Kernel symbol \'%s\' not found.\n", |
| 1802 | tev->point.symbol); |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 1803 | ret = -ENOENT; |
| 1804 | goto error; |
| 1805 | } |
Masami Hiramatsu | e334016f1 | 2010-04-12 13:17:49 -0400 | [diff] [blame] | 1806 | |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 1807 | return 1; |
| 1808 | error: |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1809 | clear_probe_trace_event(tev); |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 1810 | free(tev); |
| 1811 | *tevs = NULL; |
Masami Hiramatsu | e334016f1 | 2010-04-12 13:17:49 -0400 | [diff] [blame] | 1812 | return ret; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1813 | } |
| 1814 | |
| 1815 | struct __event_package { |
| 1816 | struct perf_probe_event *pev; |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1817 | struct probe_trace_event *tevs; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1818 | int ntevs; |
| 1819 | }; |
| 1820 | |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1821 | int add_perf_probe_events(struct perf_probe_event *pevs, int npevs, |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 1822 | int max_tevs, const char *module, bool force_add) |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1823 | { |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1824 | int i, j, ret; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1825 | struct __event_package *pkgs; |
| 1826 | |
Masami Hiramatsu | e334016f1 | 2010-04-12 13:17:49 -0400 | [diff] [blame] | 1827 | pkgs = zalloc(sizeof(struct __event_package) * npevs); |
| 1828 | if (pkgs == NULL) |
| 1829 | return -ENOMEM; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1830 | |
| 1831 | /* Init vmlinux path */ |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1832 | ret = init_vmlinux(); |
Masami Hiramatsu | 449e5b2 | 2010-08-03 11:11:40 +0900 | [diff] [blame] | 1833 | if (ret < 0) { |
| 1834 | free(pkgs); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1835 | return ret; |
Masami Hiramatsu | 449e5b2 | 2010-08-03 11:11:40 +0900 | [diff] [blame] | 1836 | } |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1837 | |
| 1838 | /* Loop 1: convert all events */ |
| 1839 | for (i = 0; i < npevs; i++) { |
| 1840 | pkgs[i].pev = &pevs[i]; |
| 1841 | /* Convert with or without debuginfo */ |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1842 | ret = convert_to_probe_trace_events(pkgs[i].pev, |
Masami Hiramatsu | 469b9b8 | 2010-10-21 19:13:41 +0900 | [diff] [blame] | 1843 | &pkgs[i].tevs, |
| 1844 | max_tevs, |
| 1845 | module); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1846 | if (ret < 0) |
| 1847 | goto end; |
| 1848 | pkgs[i].ntevs = ret; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1849 | } |
| 1850 | |
| 1851 | /* Loop 2: add all events */ |
Arnaldo Carvalho de Melo | 8635bf6 | 2011-02-22 06:56:18 -0300 | [diff] [blame] | 1852 | for (i = 0; i < npevs; i++) { |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1853 | ret = __add_probe_trace_events(pkgs[i].pev, pkgs[i].tevs, |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1854 | pkgs[i].ntevs, force_add); |
Arnaldo Carvalho de Melo | fbee632 | 2011-02-21 13:23:57 -0300 | [diff] [blame] | 1855 | if (ret < 0) |
| 1856 | break; |
| 1857 | } |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1858 | end: |
Masami Hiramatsu | 449e5b2 | 2010-08-03 11:11:40 +0900 | [diff] [blame] | 1859 | /* Loop 3: cleanup and free trace events */ |
| 1860 | for (i = 0; i < npevs; i++) { |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1861 | for (j = 0; j < pkgs[i].ntevs; j++) |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1862 | clear_probe_trace_event(&pkgs[i].tevs[j]); |
Masami Hiramatsu | 449e5b2 | 2010-08-03 11:11:40 +0900 | [diff] [blame] | 1863 | free(pkgs[i].tevs); |
| 1864 | } |
| 1865 | free(pkgs); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1866 | |
| 1867 | return ret; |
Masami Hiramatsu | e0faa8d | 2010-03-16 18:05:37 -0400 | [diff] [blame] | 1868 | } |
| 1869 | |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1870 | static int __del_trace_probe_event(int fd, struct str_node *ent) |
Masami Hiramatsu | bbbb521 | 2009-12-15 10:32:10 -0500 | [diff] [blame] | 1871 | { |
| 1872 | char *p; |
| 1873 | char buf[128]; |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1874 | int ret; |
Masami Hiramatsu | bbbb521 | 2009-12-15 10:32:10 -0500 | [diff] [blame] | 1875 | |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1876 | /* Convert from perf-probe event to trace-probe event */ |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1877 | ret = e_snprintf(buf, 128, "-:%s", ent->s); |
| 1878 | if (ret < 0) |
| 1879 | goto error; |
| 1880 | |
Masami Hiramatsu | bbbb521 | 2009-12-15 10:32:10 -0500 | [diff] [blame] | 1881 | p = strchr(buf + 2, ':'); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1882 | if (!p) { |
| 1883 | pr_debug("Internal error: %s should have ':' but not.\n", |
| 1884 | ent->s); |
| 1885 | ret = -ENOTSUP; |
| 1886 | goto error; |
| 1887 | } |
Masami Hiramatsu | bbbb521 | 2009-12-15 10:32:10 -0500 | [diff] [blame] | 1888 | *p = '/'; |
| 1889 | |
Masami Hiramatsu | 4235b04 | 2010-03-16 18:06:12 -0400 | [diff] [blame] | 1890 | pr_debug("Writing event: %s\n", buf); |
| 1891 | ret = write(fd, buf, strlen(buf)); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1892 | if (ret < 0) |
| 1893 | goto error; |
| 1894 | |
Masami Hiramatsu | bbbb521 | 2009-12-15 10:32:10 -0500 | [diff] [blame] | 1895 | printf("Remove event: %s\n", ent->s); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1896 | return 0; |
| 1897 | error: |
| 1898 | pr_warning("Failed to delete event: %s\n", strerror(-ret)); |
| 1899 | return ret; |
Masami Hiramatsu | bbbb521 | 2009-12-15 10:32:10 -0500 | [diff] [blame] | 1900 | } |
| 1901 | |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1902 | static int del_trace_probe_event(int fd, const char *group, |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1903 | const char *event, struct strlist *namelist) |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 1904 | { |
| 1905 | char buf[128]; |
Masami Hiramatsu | bbbb521 | 2009-12-15 10:32:10 -0500 | [diff] [blame] | 1906 | struct str_node *ent, *n; |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1907 | int found = 0, ret = 0; |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 1908 | |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1909 | ret = e_snprintf(buf, 128, "%s:%s", group, event); |
| 1910 | if (ret < 0) { |
Masami Hiramatsu | 0e43e5d | 2010-12-17 22:12:11 +0900 | [diff] [blame] | 1911 | pr_err("Failed to copy event.\n"); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1912 | return ret; |
| 1913 | } |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 1914 | |
Masami Hiramatsu | bbbb521 | 2009-12-15 10:32:10 -0500 | [diff] [blame] | 1915 | if (strpbrk(buf, "*?")) { /* Glob-exp */ |
| 1916 | strlist__for_each_safe(ent, n, namelist) |
| 1917 | if (strglobmatch(ent->s, buf)) { |
| 1918 | found++; |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1919 | ret = __del_trace_probe_event(fd, ent); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1920 | if (ret < 0) |
| 1921 | break; |
Masami Hiramatsu | bbbb521 | 2009-12-15 10:32:10 -0500 | [diff] [blame] | 1922 | strlist__remove(namelist, ent); |
| 1923 | } |
| 1924 | } else { |
| 1925 | ent = strlist__find(namelist, buf); |
| 1926 | if (ent) { |
| 1927 | found++; |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1928 | ret = __del_trace_probe_event(fd, ent); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1929 | if (ret >= 0) |
| 1930 | strlist__remove(namelist, ent); |
Masami Hiramatsu | bbbb521 | 2009-12-15 10:32:10 -0500 | [diff] [blame] | 1931 | } |
| 1932 | } |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1933 | if (found == 0 && ret >= 0) |
| 1934 | pr_info("Info: Event \"%s\" does not exist.\n", buf); |
| 1935 | |
| 1936 | return ret; |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 1937 | } |
| 1938 | |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1939 | int del_perf_probe_events(struct strlist *dellist) |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 1940 | { |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1941 | int fd, ret = 0; |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 1942 | const char *group, *event; |
| 1943 | char *p, *str; |
| 1944 | struct str_node *ent; |
| 1945 | struct strlist *namelist; |
| 1946 | |
Masami Hiramatsu | f4d7da4 | 2010-03-16 18:06:05 -0400 | [diff] [blame] | 1947 | fd = open_kprobe_events(true); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1948 | if (fd < 0) |
| 1949 | return fd; |
| 1950 | |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 1951 | /* Get current event names */ |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1952 | namelist = get_probe_trace_event_names(fd, true); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1953 | if (namelist == NULL) |
| 1954 | return -EINVAL; |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 1955 | |
Masami Hiramatsu | adf365f | 2009-12-15 10:32:03 -0500 | [diff] [blame] | 1956 | strlist__for_each(ent, dellist) { |
Masami Hiramatsu | 02b95da | 2010-04-12 13:17:56 -0400 | [diff] [blame] | 1957 | str = strdup(ent->s); |
| 1958 | if (str == NULL) { |
| 1959 | ret = -ENOMEM; |
| 1960 | break; |
| 1961 | } |
Masami Hiramatsu | bbbb521 | 2009-12-15 10:32:10 -0500 | [diff] [blame] | 1962 | pr_debug("Parsing: %s\n", str); |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 1963 | p = strchr(str, ':'); |
| 1964 | if (p) { |
| 1965 | group = str; |
| 1966 | *p = '\0'; |
| 1967 | event = p + 1; |
| 1968 | } else { |
Masami Hiramatsu | bbbb521 | 2009-12-15 10:32:10 -0500 | [diff] [blame] | 1969 | group = "*"; |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 1970 | event = str; |
| 1971 | } |
Masami Hiramatsu | bbbb521 | 2009-12-15 10:32:10 -0500 | [diff] [blame] | 1972 | pr_debug("Group: %s, Event: %s\n", group, event); |
Srikar Dronamraju | 0e60836 | 2010-07-29 19:43:51 +0530 | [diff] [blame] | 1973 | ret = del_trace_probe_event(fd, group, event, namelist); |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 1974 | free(str); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1975 | if (ret < 0) |
| 1976 | break; |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 1977 | } |
| 1978 | strlist__delete(namelist); |
| 1979 | close(fd); |
Masami Hiramatsu | 146a143 | 2010-04-12 13:17:42 -0400 | [diff] [blame] | 1980 | |
| 1981 | return ret; |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 1982 | } |
Masami Hiramatsu | 3c42258 | 2011-01-20 23:15:45 +0900 | [diff] [blame] | 1983 | /* TODO: don't use a global variable for filter ... */ |
| 1984 | static struct strfilter *available_func_filter; |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 1985 | |
Masami Hiramatsu | e80711c | 2011-01-13 21:46:11 +0900 | [diff] [blame] | 1986 | /* |
Masami Hiramatsu | 3c42258 | 2011-01-20 23:15:45 +0900 | [diff] [blame] | 1987 | * If a symbol corresponds to a function with global binding and |
| 1988 | * matches filter return 0. For all others return 1. |
Masami Hiramatsu | e80711c | 2011-01-13 21:46:11 +0900 | [diff] [blame] | 1989 | */ |
Masami Hiramatsu | 3c42258 | 2011-01-20 23:15:45 +0900 | [diff] [blame] | 1990 | static int filter_available_functions(struct map *map __unused, |
| 1991 | struct symbol *sym) |
Masami Hiramatsu | e80711c | 2011-01-13 21:46:11 +0900 | [diff] [blame] | 1992 | { |
Masami Hiramatsu | 3c42258 | 2011-01-20 23:15:45 +0900 | [diff] [blame] | 1993 | if (sym->binding == STB_GLOBAL && |
| 1994 | strfilter__compare(available_func_filter, sym->name)) |
| 1995 | return 0; |
| 1996 | return 1; |
Masami Hiramatsu | e80711c | 2011-01-13 21:46:11 +0900 | [diff] [blame] | 1997 | } |
| 1998 | |
Masami Hiramatsu | 3c42258 | 2011-01-20 23:15:45 +0900 | [diff] [blame] | 1999 | int show_available_funcs(const char *module, struct strfilter *_filter) |
Masami Hiramatsu | e80711c | 2011-01-13 21:46:11 +0900 | [diff] [blame] | 2000 | { |
| 2001 | struct map *map; |
| 2002 | int ret; |
| 2003 | |
| 2004 | setup_pager(); |
| 2005 | |
| 2006 | ret = init_vmlinux(); |
| 2007 | if (ret < 0) |
| 2008 | return ret; |
| 2009 | |
| 2010 | map = kernel_get_module_map(module); |
| 2011 | if (!map) { |
| 2012 | pr_err("Failed to find %s map.\n", (module) ? : "kernel"); |
| 2013 | return -EINVAL; |
| 2014 | } |
Masami Hiramatsu | 3c42258 | 2011-01-20 23:15:45 +0900 | [diff] [blame] | 2015 | available_func_filter = _filter; |
| 2016 | if (map__load(map, filter_available_functions)) { |
Masami Hiramatsu | e80711c | 2011-01-13 21:46:11 +0900 | [diff] [blame] | 2017 | pr_err("Failed to load map.\n"); |
| 2018 | return -EINVAL; |
| 2019 | } |
| 2020 | if (!dso__sorted_by_name(map->dso, map->type)) |
| 2021 | dso__sort_by_name(map->dso, map->type); |
| 2022 | |
| 2023 | dso__fprintf_symbols_by_name(map->dso, map->type, stdout); |
| 2024 | return 0; |
| 2025 | } |