2 * probe-event.c : perf-probe definition to probe_events format converter
4 * Written by Masami Hiramatsu <mhiramat@redhat.com>
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.
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.
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.
22 #include <sys/utsname.h>
23 #include <sys/types.h>
43 #include <api/fs/debugfs.h>
44 #include "trace-event.h" /* For __maybe_unused */
45 #include "probe-event.h"
46 #include "probe-finder.h"
49 #define MAX_CMDLEN 256
50 #define PERFPROBE_GROUP "probe"
52 bool probe_event_dry_run; /* Dry run flag */
54 #define semantic_error(msg ...) pr_err("Semantic error :" msg)
56 /* If there is no space to write, returns -E2BIG. */
57 static int e_snprintf(char *str, size_t size, const char *format, ...)
58 __attribute__((format(printf, 3, 4)));
60 static int e_snprintf(char *str, size_t size, const char *format, ...)
65 ret = vsnprintf(str, size, format, ap);
72 static char *synthesize_perf_probe_point(struct perf_probe_point *pp);
73 static int convert_name_to_addr(struct perf_probe_event *pev,
75 static void clear_probe_trace_event(struct probe_trace_event *tev);
76 static struct machine *host_machine;
78 /* Initialize symbol maps and path of vmlinux/modules */
79 static int init_symbol_maps(bool user_only)
83 symbol_conf.sort_by_name = true;
86 pr_debug("Failed to init symbol map.\n");
90 if (host_machine || user_only) /* already initialized */
93 if (symbol_conf.vmlinux_name)
94 pr_debug("Use vmlinux: %s\n", symbol_conf.vmlinux_name);
96 host_machine = machine__new_host();
98 pr_debug("machine__new_host() failed.\n");
104 pr_warning("Failed to init vmlinux path.\n");
108 static void exit_symbol_maps(void)
111 machine__delete(host_machine);
117 static struct symbol *__find_kernel_function_by_name(const char *name,
120 return machine__find_kernel_function_by_name(host_machine, name, mapp,
124 static struct map *kernel_get_module_map(const char *module)
127 struct map_groups *grp = &host_machine->kmaps;
129 /* A file path -- this is an offline module */
130 if (module && strchr(module, '/'))
131 return machine__new_module(host_machine, 0, module);
136 for (nd = rb_first(&grp->maps[MAP__FUNCTION]); nd; nd = rb_next(nd)) {
137 struct map *pos = rb_entry(nd, struct map, rb_node);
138 if (strncmp(pos->dso->short_name + 1, module,
139 pos->dso->short_name_len - 2) == 0) {
146 static struct dso *kernel_get_module_dso(const char *module)
150 const char *vmlinux_name;
153 list_for_each_entry(dso, &host_machine->kernel_dsos, node) {
154 if (strncmp(dso->short_name + 1, module,
155 dso->short_name_len - 2) == 0)
158 pr_debug("Failed to find module %s.\n", module);
162 map = host_machine->vmlinux_maps[MAP__FUNCTION];
165 vmlinux_name = symbol_conf.vmlinux_name;
167 if (dso__load_vmlinux(dso, map, vmlinux_name, false, NULL) <= 0)
170 if (dso__load_vmlinux_path(dso, map, NULL) <= 0) {
171 pr_debug("Failed to load kernel map.\n");
179 const char *kernel_get_module_path(const char *module)
181 struct dso *dso = kernel_get_module_dso(module);
182 return (dso) ? dso->long_name : NULL;
185 static int convert_exec_to_group(const char *exec, char **result)
187 char *ptr1, *ptr2, *exec_copy;
191 exec_copy = strdup(exec);
195 ptr1 = basename(exec_copy);
201 ptr2 = strpbrk(ptr1, "-._");
204 ret = e_snprintf(buf, 64, "%s_%s", PERFPROBE_GROUP, ptr1);
208 *result = strdup(buf);
209 ret = *result ? 0 : -ENOMEM;
216 static int convert_to_perf_probe_point(struct probe_trace_point *tp,
217 struct perf_probe_point *pp)
219 pp->function = strdup(tp->symbol);
221 if (pp->function == NULL)
224 pp->offset = tp->offset;
225 pp->retprobe = tp->retprobe;
230 #ifdef HAVE_DWARF_SUPPORT
231 /* Open new debuginfo of given module */
232 static struct debuginfo *open_debuginfo(const char *module)
236 /* A file path -- this is an offline module */
237 if (module && strchr(module, '/'))
240 path = kernel_get_module_path(module);
243 pr_err("Failed to find path of %s module.\n",
248 return debuginfo__new(path);
251 static struct ref_reloc_sym *__kernel_get_ref_reloc_sym(void)
253 /* kmap->ref_reloc_sym should be set if host_machine is initialized */
256 if (map__load(host_machine->vmlinux_maps[MAP__FUNCTION], NULL) < 0)
259 kmap = map__kmap(host_machine->vmlinux_maps[MAP__FUNCTION]);
260 return kmap->ref_reloc_sym;
264 * Convert trace point to probe point with debuginfo
265 * Currently only handles kprobes.
267 static int kprobe_convert_to_perf_probe(struct probe_trace_point *tp,
268 struct perf_probe_point *pp)
271 struct ref_reloc_sym *reloc_sym;
275 struct debuginfo *dinfo;
277 /* ref_reloc_sym is just a label. Need a special fix*/
278 reloc_sym = __kernel_get_ref_reloc_sym();
279 if (reloc_sym && strcmp(tp->symbol, reloc_sym->name) == 0)
280 addr = reloc_sym->unrelocated_addr + tp->offset;
282 sym = __find_kernel_function_by_name(tp->symbol, &map);
284 addr = map->unmap_ip(map, sym->start + tp->offset) -
288 pr_debug("try to find %s+%ld@%" PRIx64 "\n", tp->symbol,
291 dinfo = open_debuginfo(tp->module);
293 ret = debuginfo__find_probe_point(dinfo,
294 (unsigned long)addr, pp);
295 debuginfo__delete(dinfo);
297 pr_debug("Failed to open debuginfo at 0x%" PRIx64 "\n",
303 pr_debug("Failed to find corresponding probes from "
304 "debuginfo. Use kprobe event information.\n");
305 return convert_to_perf_probe_point(tp, pp);
307 pp->retprobe = tp->retprobe;
312 static int get_text_start_address(const char *exec, unsigned long *address)
317 int fd, ret = -ENOENT;
319 fd = open(exec, O_RDONLY);
323 elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL);
327 if (gelf_getehdr(elf, &ehdr) == NULL)
330 if (!elf_section_by_name(elf, &ehdr, &shdr, ".text", NULL))
333 *address = shdr.sh_addr - shdr.sh_offset;
340 static int add_exec_to_probe_trace_events(struct probe_trace_event *tevs,
341 int ntevs, const char *exec)
344 unsigned long offset, stext = 0;
350 ret = get_text_start_address(exec, &stext);
354 for (i = 0; i < ntevs && ret >= 0; i++) {
355 /* point.address is the addres of point.symbol + point.offset */
356 offset = tevs[i].point.address - stext;
357 tevs[i].point.offset = 0;
358 zfree(&tevs[i].point.symbol);
359 ret = e_snprintf(buf, 32, "0x%lx", offset);
362 tevs[i].point.module = strdup(exec);
363 tevs[i].point.symbol = strdup(buf);
364 if (!tevs[i].point.symbol || !tevs[i].point.module) {
368 tevs[i].uprobes = true;
374 static int add_module_to_probe_trace_events(struct probe_trace_event *tevs,
375 int ntevs, const char *module)
383 tmp = strrchr(module, '/');
385 /* This is a module path -- get the module name */
386 module = strdup(tmp + 1);
389 tmp = strchr(module, '.');
392 tmp = (char *)module; /* For free() */
395 for (i = 0; i < ntevs; i++) {
396 tevs[i].point.module = strdup(module);
397 if (!tevs[i].point.module) {
407 /* Post processing the probe events */
408 static int post_process_probe_trace_events(struct probe_trace_event *tevs,
409 int ntevs, const char *module,
412 struct ref_reloc_sym *reloc_sym;
417 return add_exec_to_probe_trace_events(tevs, ntevs, module);
419 /* Note that currently ref_reloc_sym based probe is not for drivers */
421 return add_module_to_probe_trace_events(tevs, ntevs, module);
423 reloc_sym = __kernel_get_ref_reloc_sym();
425 pr_warning("Relocated base symbol is not found!\n");
429 for (i = 0; i < ntevs; i++) {
430 if (tevs[i].point.address) {
431 tmp = strdup(reloc_sym->name);
434 free(tevs[i].point.symbol);
435 tevs[i].point.symbol = tmp;
436 tevs[i].point.offset = tevs[i].point.address -
437 reloc_sym->unrelocated_addr;
443 static void clear_probe_trace_events(struct probe_trace_event *tevs, int ntevs)
447 for (i = 0; i < ntevs; i++)
448 clear_probe_trace_event(tevs + i);
451 /* Try to find perf_probe_event with debuginfo */
452 static int try_to_find_probe_trace_events(struct perf_probe_event *pev,
453 struct probe_trace_event **tevs,
454 int max_tevs, const char *target)
456 bool need_dwarf = perf_probe_event_need_dwarf(pev);
457 struct debuginfo *dinfo;
460 dinfo = open_debuginfo(target);
464 pr_warning("Failed to open debuginfo file.\n");
467 pr_debug("Could not open debuginfo. Try to use symbols.\n");
471 pr_debug("Try to find probe point from debuginfo.\n");
472 /* Searching trace events corresponding to a probe event */
473 ntevs = debuginfo__find_trace_events(dinfo, pev, tevs, max_tevs);
475 debuginfo__delete(dinfo);
477 if (ntevs > 0) { /* Succeeded to find trace events */
478 pr_debug("Found %d probe_trace_events.\n", ntevs);
479 ret = post_process_probe_trace_events(*tevs, ntevs,
480 target, pev->uprobes);
482 clear_probe_trace_events(*tevs, ntevs);
485 return ret < 0 ? ret : ntevs;
488 if (ntevs == 0) { /* No error but failed to find probe point. */
489 pr_warning("Probe point '%s' not found.\n",
490 synthesize_perf_probe_point(&pev->point));
493 /* Error path : ntevs < 0 */
494 pr_debug("An error occurred in debuginfo analysis (%d).\n", ntevs);
495 if (ntevs == -EBADF) {
496 pr_warning("Warning: No dwarf info found in the vmlinux - "
497 "please rebuild kernel with CONFIG_DEBUG_INFO=y.\n");
499 pr_debug("Trying to use symbols.\n");
507 * Find a src file from a DWARF tag path. Prepend optional source path prefix
508 * and chop off leading directories that do not exist. Result is passed back as
509 * a newly allocated path on success.
510 * Return 0 if file was found and readable, -errno otherwise.
512 static int get_real_path(const char *raw_path, const char *comp_dir,
515 const char *prefix = symbol_conf.source_prefix;
518 if (raw_path[0] != '/' && comp_dir)
519 /* If not an absolute path, try to use comp_dir */
522 if (access(raw_path, R_OK) == 0) {
523 *new_path = strdup(raw_path);
530 *new_path = malloc((strlen(prefix) + strlen(raw_path) + 2));
535 sprintf(*new_path, "%s/%s", prefix, raw_path);
537 if (access(*new_path, R_OK) == 0)
540 if (!symbol_conf.source_prefix)
541 /* In case of searching comp_dir, don't retry */
549 raw_path = strchr(++raw_path, '/');
563 #define LINEBUF_SIZE 256
564 #define NR_ADDITIONAL_LINES 2
566 static int __show_one_line(FILE *fp, int l, bool skip, bool show_num)
568 char buf[LINEBUF_SIZE];
569 const char *color = show_num ? "" : PERF_COLOR_BLUE;
570 const char *prefix = NULL;
573 if (fgets(buf, LINEBUF_SIZE, fp) == NULL)
578 prefix = show_num ? "%7d " : " ";
579 color_fprintf(stdout, color, prefix, l);
581 color_fprintf(stdout, color, "%s", buf);
583 } while (strchr(buf, '\n') == NULL);
588 pr_warning("File read error: %s\n", strerror(errno));
594 static int _show_one_line(FILE *fp, int l, bool skip, bool show_num)
596 int rv = __show_one_line(fp, l, skip, show_num);
598 pr_warning("Source file is shorter than expected.\n");
604 #define show_one_line_with_num(f,l) _show_one_line(f,l,false,true)
605 #define show_one_line(f,l) _show_one_line(f,l,false,false)
606 #define skip_one_line(f,l) _show_one_line(f,l,true,false)
607 #define show_one_line_or_eof(f,l) __show_one_line(f,l,false,false)
610 * Show line-range always requires debuginfo to find source file and
613 static int __show_line_range(struct line_range *lr, const char *module)
617 struct debuginfo *dinfo;
622 /* Search a line range */
623 dinfo = open_debuginfo(module);
625 pr_warning("Failed to open debuginfo file.\n");
629 ret = debuginfo__find_line_range(dinfo, lr);
630 debuginfo__delete(dinfo);
632 pr_warning("Specified source line is not found.\n");
634 } else if (ret < 0) {
635 pr_warning("Debuginfo analysis failed. (%d)\n", ret);
639 /* Convert source file path */
641 ret = get_real_path(tmp, lr->comp_dir, &lr->path);
642 free(tmp); /* Free old path */
644 pr_warning("Failed to find source file. (%d)\n", ret);
651 fprintf(stdout, "<%s@%s:%d>\n", lr->function, lr->path,
652 lr->start - lr->offset);
654 fprintf(stdout, "<%s:%d>\n", lr->path, lr->start);
656 fp = fopen(lr->path, "r");
658 pr_warning("Failed to open %s: %s\n", lr->path,
662 /* Skip to starting line number */
663 while (l < lr->start) {
664 ret = skip_one_line(fp, l++);
669 intlist__for_each(ln, lr->line_list) {
670 for (; ln->i > l; l++) {
671 ret = show_one_line(fp, l - lr->offset);
675 ret = show_one_line_with_num(fp, l++ - lr->offset);
680 if (lr->end == INT_MAX)
681 lr->end = l + NR_ADDITIONAL_LINES;
682 while (l <= lr->end) {
683 ret = show_one_line_or_eof(fp, l++ - lr->offset);
692 int show_line_range(struct line_range *lr, const char *module)
696 ret = init_symbol_maps(false);
699 ret = __show_line_range(lr, module);
705 static int show_available_vars_at(struct debuginfo *dinfo,
706 struct perf_probe_event *pev,
707 int max_vls, struct strfilter *_filter,
712 struct str_node *node;
713 struct variable_list *vls = NULL, *vl;
716 buf = synthesize_perf_probe_point(&pev->point);
719 pr_debug("Searching variables at %s\n", buf);
721 ret = debuginfo__find_available_vars_at(dinfo, pev, &vls,
724 pr_err("Failed to find variables at %s (%d)\n", buf, ret);
727 /* Some variables are found */
728 fprintf(stdout, "Available variables at %s\n", buf);
729 for (i = 0; i < ret; i++) {
732 * A probe point might be converted to
733 * several trace points.
735 fprintf(stdout, "\t@<%s+%lu>\n", vl->point.symbol,
737 zfree(&vl->point.symbol);
740 strlist__for_each(node, vl->vars) {
741 var = strchr(node->s, '\t') + 1;
742 if (strfilter__compare(_filter, var)) {
743 fprintf(stdout, "\t\t%s\n", node->s);
747 strlist__delete(vl->vars);
750 fprintf(stdout, "\t\t(No matched variables)\n");
758 /* Show available variables on given probe point */
759 int show_available_vars(struct perf_probe_event *pevs, int npevs,
760 int max_vls, const char *module,
761 struct strfilter *_filter, bool externs)
764 struct debuginfo *dinfo;
766 ret = init_symbol_maps(false);
770 dinfo = open_debuginfo(module);
772 pr_warning("Failed to open debuginfo file.\n");
779 for (i = 0; i < npevs && ret >= 0; i++)
780 ret = show_available_vars_at(dinfo, &pevs[i], max_vls, _filter,
783 debuginfo__delete(dinfo);
789 #else /* !HAVE_DWARF_SUPPORT */
791 static int kprobe_convert_to_perf_probe(struct probe_trace_point *tp,
792 struct perf_probe_point *pp)
794 return convert_to_perf_probe_point(tp, pp);
797 static int try_to_find_probe_trace_events(struct perf_probe_event *pev,
798 struct probe_trace_event **tevs __maybe_unused,
799 int max_tevs __maybe_unused,
800 const char *target __maybe_unused)
802 if (perf_probe_event_need_dwarf(pev)) {
803 pr_warning("Debuginfo-analysis is not supported.\n");
810 int show_line_range(struct line_range *lr __maybe_unused,
811 const char *module __maybe_unused)
813 pr_warning("Debuginfo-analysis is not supported.\n");
817 int show_available_vars(struct perf_probe_event *pevs __maybe_unused,
818 int npevs __maybe_unused, int max_vls __maybe_unused,
819 const char *module __maybe_unused,
820 struct strfilter *filter __maybe_unused,
821 bool externs __maybe_unused)
823 pr_warning("Debuginfo-analysis is not supported.\n");
828 void line_range__clear(struct line_range *lr)
834 intlist__delete(lr->line_list);
835 memset(lr, 0, sizeof(*lr));
838 int line_range__init(struct line_range *lr)
840 memset(lr, 0, sizeof(*lr));
841 lr->line_list = intlist__new(NULL);
848 static int parse_line_num(char **ptr, int *val, const char *what)
850 const char *start = *ptr;
853 *val = strtol(*ptr, ptr, 0);
854 if (errno || *ptr == start) {
855 semantic_error("'%s' is not a valid number.\n", what);
862 * Stuff 'lr' according to the line range described by 'arg'.
863 * The line range syntax is described by:
865 * SRC[:SLN[+NUM|-ELN]]
866 * FNC[@SRC][:SLN[+NUM|-ELN]]
868 int parse_line_range_desc(const char *arg, struct line_range *lr)
870 char *range, *file, *name = strdup(arg);
879 range = strchr(name, ':');
883 err = parse_line_num(&range, &lr->start, "start line");
887 if (*range == '+' || *range == '-') {
888 const char c = *range++;
890 err = parse_line_num(&range, &lr->end, "end line");
895 lr->end += lr->start;
897 * Adjust the number of lines here.
898 * If the number of lines == 1, the
899 * the end of line should be equal to
906 pr_debug("Line range is %d to %d\n", lr->start, lr->end);
909 if (lr->start > lr->end) {
910 semantic_error("Start line must be smaller"
911 " than end line.\n");
914 if (*range != '\0') {
915 semantic_error("Tailing with invalid str '%s'.\n", range);
920 file = strchr(name, '@');
923 lr->file = strdup(++file);
924 if (lr->file == NULL) {
929 } else if (strchr(name, '.'))
940 /* Check the name is good for event/group */
941 static bool check_event_name(const char *name)
943 if (!isalpha(*name) && *name != '_')
945 while (*++name != '\0') {
946 if (!isalpha(*name) && !isdigit(*name) && *name != '_')
952 /* Parse probepoint definition. */
953 static int parse_perf_probe_point(char *arg, struct perf_probe_event *pev)
955 struct perf_probe_point *pp = &pev->point;
960 * perf probe [EVENT=]SRC[:LN|;PTN]
961 * perf probe [EVENT=]FUNC[@SRC][+OFFS|%return|:LN|;PAT]
963 * TODO:Group name support
966 ptr = strpbrk(arg, ";=@+%");
967 if (ptr && *ptr == '=') { /* Event name */
970 if (strchr(arg, ':')) {
971 semantic_error("Group name is not supported yet.\n");
974 if (!check_event_name(arg)) {
975 semantic_error("%s is bad for event name -it must "
976 "follow C symbol-naming rule.\n", arg);
979 pev->event = strdup(arg);
980 if (pev->event == NULL)
986 ptr = strpbrk(arg, ";:+@%");
996 /* Check arg is function or file and copy it */
997 if (strchr(tmp, '.')) /* File */
1002 /* Parse other options */
1006 if (c == ';') { /* Lazy pattern must be the last part */
1007 pp->lazy_line = strdup(arg);
1008 if (pp->lazy_line == NULL)
1012 ptr = strpbrk(arg, ";:+@%");
1018 case ':': /* Line number */
1019 pp->line = strtoul(arg, &tmp, 0);
1021 semantic_error("There is non-digit char"
1022 " in line number.\n");
1026 case '+': /* Byte offset from a symbol */
1027 pp->offset = strtoul(arg, &tmp, 0);
1029 semantic_error("There is non-digit character"
1034 case '@': /* File name */
1036 semantic_error("SRC@SRC is not allowed.\n");
1039 pp->file = strdup(arg);
1040 if (pp->file == NULL)
1043 case '%': /* Probe places */
1044 if (strcmp(arg, "return") == 0) {
1046 } else { /* Others not supported yet */
1047 semantic_error("%%%s is not supported.\n", arg);
1051 default: /* Buggy case */
1052 pr_err("This program has a bug at %s:%d.\n",
1053 __FILE__, __LINE__);
1059 /* Exclusion check */
1060 if (pp->lazy_line && pp->line) {
1061 semantic_error("Lazy pattern can't be used with"
1066 if (pp->lazy_line && pp->offset) {
1067 semantic_error("Lazy pattern can't be used with offset.\n");
1071 if (pp->line && pp->offset) {
1072 semantic_error("Offset can't be used with line number.\n");
1076 if (!pp->line && !pp->lazy_line && pp->file && !pp->function) {
1077 semantic_error("File always requires line number or "
1082 if (pp->offset && !pp->function) {
1083 semantic_error("Offset requires an entry function.\n");
1087 if (pp->retprobe && !pp->function) {
1088 semantic_error("Return probe requires an entry function.\n");
1092 if ((pp->offset || pp->line || pp->lazy_line) && pp->retprobe) {
1093 semantic_error("Offset/Line/Lazy pattern can't be used with "
1098 pr_debug("symbol:%s file:%s line:%d offset:%lu return:%d lazy:%s\n",
1099 pp->function, pp->file, pp->line, pp->offset, pp->retprobe,
1104 /* Parse perf-probe event argument */
1105 static int parse_perf_probe_arg(char *str, struct perf_probe_arg *arg)
1107 char *tmp, *goodname;
1108 struct perf_probe_arg_field **fieldp;
1110 pr_debug("parsing arg: %s into ", str);
1112 tmp = strchr(str, '=');
1114 arg->name = strndup(str, tmp - str);
1115 if (arg->name == NULL)
1117 pr_debug("name:%s ", arg->name);
1121 tmp = strchr(str, ':');
1122 if (tmp) { /* Type setting */
1124 arg->type = strdup(tmp + 1);
1125 if (arg->type == NULL)
1127 pr_debug("type:%s ", arg->type);
1130 tmp = strpbrk(str, "-.[");
1131 if (!is_c_varname(str) || !tmp) {
1132 /* A variable, register, symbol or special value */
1133 arg->var = strdup(str);
1134 if (arg->var == NULL)
1136 pr_debug("%s\n", arg->var);
1140 /* Structure fields or array element */
1141 arg->var = strndup(str, tmp - str);
1142 if (arg->var == NULL)
1144 goodname = arg->var;
1145 pr_debug("%s, ", arg->var);
1146 fieldp = &arg->field;
1149 *fieldp = zalloc(sizeof(struct perf_probe_arg_field));
1150 if (*fieldp == NULL)
1152 if (*tmp == '[') { /* Array */
1154 (*fieldp)->index = strtol(str + 1, &tmp, 0);
1155 (*fieldp)->ref = true;
1156 if (*tmp != ']' || tmp == str + 1) {
1157 semantic_error("Array index must be a"
1164 } else { /* Structure */
1167 (*fieldp)->ref = false;
1168 } else if (tmp[1] == '>') {
1170 (*fieldp)->ref = true;
1172 semantic_error("Argument parse error: %s\n",
1176 tmp = strpbrk(str, "-.[");
1179 (*fieldp)->name = strndup(str, tmp - str);
1180 if ((*fieldp)->name == NULL)
1183 goodname = (*fieldp)->name;
1184 pr_debug("%s(%d), ", (*fieldp)->name, (*fieldp)->ref);
1185 fieldp = &(*fieldp)->next;
1188 (*fieldp)->name = strdup(str);
1189 if ((*fieldp)->name == NULL)
1192 goodname = (*fieldp)->name;
1193 pr_debug("%s(%d)\n", (*fieldp)->name, (*fieldp)->ref);
1195 /* If no name is specified, set the last field name (not array index)*/
1197 arg->name = strdup(goodname);
1198 if (arg->name == NULL)
1204 /* Parse perf-probe event command */
1205 int parse_perf_probe_command(const char *cmd, struct perf_probe_event *pev)
1208 int argc, i, ret = 0;
1210 argv = argv_split(cmd, &argc);
1212 pr_debug("Failed to split arguments.\n");
1215 if (argc - 1 > MAX_PROBE_ARGS) {
1216 semantic_error("Too many probe arguments (%d).\n", argc - 1);
1220 /* Parse probe point */
1221 ret = parse_perf_probe_point(argv[0], pev);
1225 /* Copy arguments and ensure return probe has no C argument */
1226 pev->nargs = argc - 1;
1227 pev->args = zalloc(sizeof(struct perf_probe_arg) * pev->nargs);
1228 if (pev->args == NULL) {
1232 for (i = 0; i < pev->nargs && ret >= 0; i++) {
1233 ret = parse_perf_probe_arg(argv[i + 1], &pev->args[i]);
1235 is_c_varname(pev->args[i].var) && pev->point.retprobe) {
1236 semantic_error("You can't specify local variable for"
1247 /* Return true if this perf_probe_event requires debuginfo */
1248 bool perf_probe_event_need_dwarf(struct perf_probe_event *pev)
1252 if (pev->point.file || pev->point.line || pev->point.lazy_line)
1255 for (i = 0; i < pev->nargs; i++)
1256 if (is_c_varname(pev->args[i].var))
1262 /* Parse probe_events event into struct probe_point */
1263 static int parse_probe_trace_command(const char *cmd,
1264 struct probe_trace_event *tev)
1266 struct probe_trace_point *tp = &tev->point;
1269 char *argv0_str = NULL, *fmt, *fmt1_str, *fmt2_str, *fmt3_str;
1273 pr_debug("Parsing probe_events: %s\n", cmd);
1274 argv = argv_split(cmd, &argc);
1276 pr_debug("Failed to split arguments.\n");
1280 semantic_error("Too few probe arguments.\n");
1285 /* Scan event and group name. */
1286 argv0_str = strdup(argv[0]);
1287 if (argv0_str == NULL) {
1291 fmt1_str = strtok_r(argv0_str, ":", &fmt);
1292 fmt2_str = strtok_r(NULL, "/", &fmt);
1293 fmt3_str = strtok_r(NULL, " \t", &fmt);
1294 if (fmt1_str == NULL || strlen(fmt1_str) != 1 || fmt2_str == NULL
1295 || fmt3_str == NULL) {
1296 semantic_error("Failed to parse event name: %s\n", argv[0]);
1301 tev->group = strdup(fmt2_str);
1302 tev->event = strdup(fmt3_str);
1303 if (tev->group == NULL || tev->event == NULL) {
1307 pr_debug("Group:%s Event:%s probe:%c\n", tev->group, tev->event, pr);
1309 tp->retprobe = (pr == 'r');
1311 /* Scan module name(if there), function name and offset */
1312 p = strchr(argv[1], ':');
1314 tp->module = strndup(argv[1], p - argv[1]);
1318 fmt1_str = strtok_r(p, "+", &fmt);
1319 tp->symbol = strdup(fmt1_str);
1320 if (tp->symbol == NULL) {
1324 fmt2_str = strtok_r(NULL, "", &fmt);
1325 if (fmt2_str == NULL)
1328 tp->offset = strtoul(fmt2_str, NULL, 10);
1330 tev->nargs = argc - 2;
1331 tev->args = zalloc(sizeof(struct probe_trace_arg) * tev->nargs);
1332 if (tev->args == NULL) {
1336 for (i = 0; i < tev->nargs; i++) {
1337 p = strchr(argv[i + 2], '=');
1338 if (p) /* We don't need which register is assigned. */
1342 tev->args[i].name = strdup(argv[i + 2]);
1343 /* TODO: parse regs and offset */
1344 tev->args[i].value = strdup(p);
1345 if (tev->args[i].name == NULL || tev->args[i].value == NULL) {
1357 /* Compose only probe arg */
1358 int synthesize_perf_probe_arg(struct perf_probe_arg *pa, char *buf, size_t len)
1360 struct perf_probe_arg_field *field = pa->field;
1364 if (pa->name && pa->var)
1365 ret = e_snprintf(tmp, len, "%s=%s", pa->name, pa->var);
1367 ret = e_snprintf(tmp, len, "%s", pa->name ? pa->name : pa->var);
1374 if (field->name[0] == '[')
1375 ret = e_snprintf(tmp, len, "%s", field->name);
1377 ret = e_snprintf(tmp, len, "%s%s",
1378 field->ref ? "->" : ".", field->name);
1383 field = field->next;
1387 ret = e_snprintf(tmp, len, ":%s", pa->type);
1396 pr_debug("Failed to synthesize perf probe argument: %s\n",
1401 /* Compose only probe point (not argument) */
1402 static char *synthesize_perf_probe_point(struct perf_probe_point *pp)
1405 char offs[32] = "", line[32] = "", file[32] = "";
1408 buf = zalloc(MAX_CMDLEN);
1414 ret = e_snprintf(offs, 32, "+%lu", pp->offset);
1419 ret = e_snprintf(line, 32, ":%d", pp->line);
1427 tmp = strchr(pp->file + len - 30, '/');
1428 tmp = tmp ? tmp + 1 : pp->file + len - 30;
1430 ret = e_snprintf(file, 32, "@%s", tmp);
1436 ret = e_snprintf(buf, MAX_CMDLEN, "%s%s%s%s%s", pp->function,
1437 offs, pp->retprobe ? "%return" : "", line,
1440 ret = e_snprintf(buf, MAX_CMDLEN, "%s%s", file, line);
1446 pr_debug("Failed to synthesize perf probe point: %s\n",
1453 char *synthesize_perf_probe_command(struct perf_probe_event *pev)
1458 buf = synthesize_perf_probe_point(&pev->point);
1463 for (i = 0; i < pev->nargs; i++) {
1464 ret = e_snprintf(&buf[len], MAX_CMDLEN - len, " %s",
1477 static int __synthesize_probe_trace_arg_ref(struct probe_trace_arg_ref *ref,
1478 char **buf, size_t *buflen,
1483 depth = __synthesize_probe_trace_arg_ref(ref->next, buf,
1489 ret = e_snprintf(*buf, *buflen, "%+ld(", ref->offset);
1501 static int synthesize_probe_trace_arg(struct probe_trace_arg *arg,
1502 char *buf, size_t buflen)
1504 struct probe_trace_arg_ref *ref = arg->ref;
1508 /* Argument name or separator */
1510 ret = e_snprintf(buf, buflen, " %s=", arg->name);
1512 ret = e_snprintf(buf, buflen, " ");
1518 /* Special case: @XXX */
1519 if (arg->value[0] == '@' && arg->ref)
1522 /* Dereferencing arguments */
1524 depth = __synthesize_probe_trace_arg_ref(ref, &buf,
1530 /* Print argument value */
1531 if (arg->value[0] == '@' && arg->ref)
1532 ret = e_snprintf(buf, buflen, "%s%+ld", arg->value,
1535 ret = e_snprintf(buf, buflen, "%s", arg->value);
1543 ret = e_snprintf(buf, buflen, ")");
1549 /* Print argument type */
1551 ret = e_snprintf(buf, buflen, ":%s", arg->type);
1560 char *synthesize_probe_trace_command(struct probe_trace_event *tev)
1562 struct probe_trace_point *tp = &tev->point;
1566 buf = zalloc(MAX_CMDLEN);
1571 len = e_snprintf(buf, MAX_CMDLEN, "%c:%s/%s %s:%s",
1572 tp->retprobe ? 'r' : 'p',
1573 tev->group, tev->event,
1574 tp->module, tp->symbol);
1576 len = e_snprintf(buf, MAX_CMDLEN, "%c:%s/%s %s%s%s+%lu",
1577 tp->retprobe ? 'r' : 'p',
1578 tev->group, tev->event,
1579 tp->module ?: "", tp->module ? ":" : "",
1580 tp->symbol, tp->offset);
1585 for (i = 0; i < tev->nargs; i++) {
1586 ret = synthesize_probe_trace_arg(&tev->args[i], buf + len,
1599 static int convert_to_perf_probe_event(struct probe_trace_event *tev,
1600 struct perf_probe_event *pev, bool is_kprobe)
1605 /* Convert event/group name */
1606 pev->event = strdup(tev->event);
1607 pev->group = strdup(tev->group);
1608 if (pev->event == NULL || pev->group == NULL)
1611 /* Convert trace_point to probe_point */
1613 ret = kprobe_convert_to_perf_probe(&tev->point, &pev->point);
1615 ret = convert_to_perf_probe_point(&tev->point, &pev->point);
1620 /* Convert trace_arg to probe_arg */
1621 pev->nargs = tev->nargs;
1622 pev->args = zalloc(sizeof(struct perf_probe_arg) * pev->nargs);
1623 if (pev->args == NULL)
1625 for (i = 0; i < tev->nargs && ret >= 0; i++) {
1626 if (tev->args[i].name)
1627 pev->args[i].name = strdup(tev->args[i].name);
1629 ret = synthesize_probe_trace_arg(&tev->args[i],
1631 pev->args[i].name = strdup(buf);
1633 if (pev->args[i].name == NULL && ret >= 0)
1638 clear_perf_probe_event(pev);
1643 void clear_perf_probe_event(struct perf_probe_event *pev)
1645 struct perf_probe_point *pp = &pev->point;
1646 struct perf_probe_arg_field *field, *next;
1653 free(pp->lazy_line);
1655 for (i = 0; i < pev->nargs; i++) {
1656 free(pev->args[i].name);
1657 free(pev->args[i].var);
1658 free(pev->args[i].type);
1659 field = pev->args[i].field;
1662 zfree(&field->name);
1668 memset(pev, 0, sizeof(*pev));
1671 static void clear_probe_trace_event(struct probe_trace_event *tev)
1673 struct probe_trace_arg_ref *ref, *next;
1678 free(tev->point.symbol);
1679 free(tev->point.module);
1680 for (i = 0; i < tev->nargs; i++) {
1681 free(tev->args[i].name);
1682 free(tev->args[i].value);
1683 free(tev->args[i].type);
1684 ref = tev->args[i].ref;
1692 memset(tev, 0, sizeof(*tev));
1695 static void print_warn_msg(const char *file, bool is_kprobe)
1698 if (errno == ENOENT) {
1702 config = "CONFIG_UPROBE_EVENTS";
1704 config = "CONFIG_KPROBE_EVENTS";
1706 pr_warning("%s file does not exist - please rebuild kernel"
1707 " with %s.\n", file, config);
1709 pr_warning("Failed to open %s file: %s\n", file,
1713 static int open_probe_events(const char *trace_file, bool readwrite,
1717 const char *__debugfs;
1720 __debugfs = debugfs_find_mountpoint();
1721 if (__debugfs == NULL) {
1722 pr_warning("Debugfs is not mounted.\n");
1726 ret = e_snprintf(buf, PATH_MAX, "%s/%s", __debugfs, trace_file);
1728 pr_debug("Opening %s write=%d\n", buf, readwrite);
1729 if (readwrite && !probe_event_dry_run)
1730 ret = open(buf, O_RDWR, O_APPEND);
1732 ret = open(buf, O_RDONLY, 0);
1735 print_warn_msg(buf, is_kprobe);
1740 static int open_kprobe_events(bool readwrite)
1742 return open_probe_events("tracing/kprobe_events", readwrite, true);
1745 static int open_uprobe_events(bool readwrite)
1747 return open_probe_events("tracing/uprobe_events", readwrite, false);
1750 /* Get raw string list of current kprobe_events or uprobe_events */
1751 static struct strlist *get_probe_trace_command_rawlist(int fd)
1755 char buf[MAX_CMDLEN];
1759 sl = strlist__new(true, NULL);
1761 fp = fdopen(dup(fd), "r");
1763 p = fgets(buf, MAX_CMDLEN, fp);
1767 idx = strlen(p) - 1;
1770 ret = strlist__add(sl, buf);
1772 pr_debug("strlist__add failed: %s\n", strerror(-ret));
1773 strlist__delete(sl);
1783 static int show_perf_probe_event(struct perf_probe_event *pev,
1790 /* Synthesize only event probe point */
1791 place = synthesize_perf_probe_point(&pev->point);
1795 ret = e_snprintf(buf, 128, "%s:%s", pev->group, pev->event);
1799 printf(" %-20s (on %s", buf, place);
1801 printf(" in %s", module);
1803 if (pev->nargs > 0) {
1805 for (i = 0; i < pev->nargs; i++) {
1806 ret = synthesize_perf_probe_arg(&pev->args[i],
1818 static int __show_perf_probe_events(int fd, bool is_kprobe)
1821 struct probe_trace_event tev;
1822 struct perf_probe_event pev;
1823 struct strlist *rawlist;
1824 struct str_node *ent;
1826 memset(&tev, 0, sizeof(tev));
1827 memset(&pev, 0, sizeof(pev));
1829 rawlist = get_probe_trace_command_rawlist(fd);
1833 strlist__for_each(ent, rawlist) {
1834 ret = parse_probe_trace_command(ent->s, &tev);
1836 ret = convert_to_perf_probe_event(&tev, &pev,
1839 ret = show_perf_probe_event(&pev,
1842 clear_perf_probe_event(&pev);
1843 clear_probe_trace_event(&tev);
1847 strlist__delete(rawlist);
1852 /* List up current perf-probe events */
1853 int show_perf_probe_events(void)
1858 fd = open_kprobe_events(false);
1863 ret = init_symbol_maps(false);
1867 ret = __show_perf_probe_events(fd, true);
1870 fd = open_uprobe_events(false);
1872 ret = __show_perf_probe_events(fd, false);
1880 /* Get current perf-probe event names */
1881 static struct strlist *get_probe_trace_event_names(int fd, bool include_group)
1884 struct strlist *sl, *rawlist;
1885 struct str_node *ent;
1886 struct probe_trace_event tev;
1889 memset(&tev, 0, sizeof(tev));
1890 rawlist = get_probe_trace_command_rawlist(fd);
1891 sl = strlist__new(true, NULL);
1892 strlist__for_each(ent, rawlist) {
1893 ret = parse_probe_trace_command(ent->s, &tev);
1896 if (include_group) {
1897 ret = e_snprintf(buf, 128, "%s:%s", tev.group,
1900 ret = strlist__add(sl, buf);
1902 ret = strlist__add(sl, tev.event);
1903 clear_probe_trace_event(&tev);
1907 strlist__delete(rawlist);
1910 strlist__delete(sl);
1916 static int write_probe_trace_event(int fd, struct probe_trace_event *tev)
1919 char *buf = synthesize_probe_trace_command(tev);
1922 pr_debug("Failed to synthesize probe trace event.\n");
1926 pr_debug("Writing event: %s\n", buf);
1927 if (!probe_event_dry_run) {
1928 ret = write(fd, buf, strlen(buf));
1930 pr_warning("Failed to write event: %s\n",
1937 static int get_new_event_name(char *buf, size_t len, const char *base,
1938 struct strlist *namelist, bool allow_suffix)
1943 ret = e_snprintf(buf, len, "%s", base);
1945 pr_debug("snprintf() failed: %s\n", strerror(-ret));
1948 if (!strlist__has_entry(namelist, buf))
1951 if (!allow_suffix) {
1952 pr_warning("Error: event \"%s\" already exists. "
1953 "(Use -f to force duplicates.)\n", base);
1957 /* Try to add suffix */
1958 for (i = 1; i < MAX_EVENT_INDEX; i++) {
1959 ret = e_snprintf(buf, len, "%s_%d", base, i);
1961 pr_debug("snprintf() failed: %s\n", strerror(-ret));
1964 if (!strlist__has_entry(namelist, buf))
1967 if (i == MAX_EVENT_INDEX) {
1968 pr_warning("Too many events are on the same function.\n");
1975 static int __add_probe_trace_events(struct perf_probe_event *pev,
1976 struct probe_trace_event *tevs,
1977 int ntevs, bool allow_suffix)
1980 struct probe_trace_event *tev = NULL;
1982 const char *event, *group;
1983 struct strlist *namelist;
1986 fd = open_uprobe_events(true);
1988 fd = open_kprobe_events(true);
1992 /* Get current event names */
1993 namelist = get_probe_trace_event_names(fd, false);
1995 pr_debug("Failed to get current event list.\n");
2000 printf("Added new event%s\n", (ntevs > 1) ? "s:" : ":");
2001 for (i = 0; i < ntevs; i++) {
2006 if (pev->point.function)
2007 event = pev->point.function;
2009 event = tev->point.symbol;
2013 group = PERFPROBE_GROUP;
2015 /* Get an unused new event name */
2016 ret = get_new_event_name(buf, 64, event,
2017 namelist, allow_suffix);
2022 tev->event = strdup(event);
2023 tev->group = strdup(group);
2024 if (tev->event == NULL || tev->group == NULL) {
2028 ret = write_probe_trace_event(fd, tev);
2031 /* Add added event name to namelist */
2032 strlist__add(namelist, event);
2034 /* Trick here - save current event/group */
2037 pev->event = tev->event;
2038 pev->group = tev->group;
2039 show_perf_probe_event(pev, tev->point.module);
2040 /* Trick here - restore current event/group */
2041 pev->event = (char *)event;
2042 pev->group = (char *)group;
2045 * Probes after the first probe which comes from same
2046 * user input are always allowed to add suffix, because
2047 * there might be several addresses corresponding to
2050 allow_suffix = true;
2054 /* Show how to use the event. */
2055 printf("\nYou can now use it in all perf tools, such as:\n\n");
2056 printf("\tperf record -e %s:%s -aR sleep 1\n\n", tev->group,
2060 strlist__delete(namelist);
2065 static int convert_to_probe_trace_events(struct perf_probe_event *pev,
2066 struct probe_trace_event **tevs,
2067 int max_tevs, const char *target)
2071 struct probe_trace_event *tev;
2073 if (pev->uprobes && !pev->group) {
2074 /* Replace group name if not given */
2075 ret = convert_exec_to_group(target, &pev->group);
2077 pr_warning("Failed to make a group name.\n");
2082 /* Convert perf_probe_event with debuginfo */
2083 ret = try_to_find_probe_trace_events(pev, tevs, max_tevs, target);
2085 return ret; /* Found in debuginfo or got an error */
2088 ret = convert_name_to_addr(pev, target);
2093 /* Allocate trace event buffer */
2094 tev = *tevs = zalloc(sizeof(struct probe_trace_event));
2098 /* Copy parameters */
2099 tev->point.symbol = strdup(pev->point.function);
2100 if (tev->point.symbol == NULL) {
2106 tev->point.module = strdup(target);
2107 if (tev->point.module == NULL) {
2113 tev->point.offset = pev->point.offset;
2114 tev->point.retprobe = pev->point.retprobe;
2115 tev->nargs = pev->nargs;
2116 tev->uprobes = pev->uprobes;
2119 tev->args = zalloc(sizeof(struct probe_trace_arg)
2121 if (tev->args == NULL) {
2125 for (i = 0; i < tev->nargs; i++) {
2126 if (pev->args[i].name) {
2127 tev->args[i].name = strdup(pev->args[i].name);
2128 if (tev->args[i].name == NULL) {
2133 tev->args[i].value = strdup(pev->args[i].var);
2134 if (tev->args[i].value == NULL) {
2138 if (pev->args[i].type) {
2139 tev->args[i].type = strdup(pev->args[i].type);
2140 if (tev->args[i].type == NULL) {
2151 /* Currently just checking function name from symbol map */
2152 sym = __find_kernel_function_by_name(tev->point.symbol, NULL);
2154 pr_warning("Kernel symbol \'%s\' not found.\n",
2158 } else if (tev->point.offset > sym->end - sym->start) {
2159 pr_warning("Offset specified is greater than size of %s\n",
2168 clear_probe_trace_event(tev);
2174 struct __event_package {
2175 struct perf_probe_event *pev;
2176 struct probe_trace_event *tevs;
2180 int add_perf_probe_events(struct perf_probe_event *pevs, int npevs,
2181 int max_tevs, const char *target, bool force_add)
2184 struct __event_package *pkgs;
2187 pkgs = zalloc(sizeof(struct __event_package) * npevs);
2192 ret = init_symbol_maps(pevs->uprobes);
2198 /* Loop 1: convert all events */
2199 for (i = 0; i < npevs; i++) {
2200 pkgs[i].pev = &pevs[i];
2201 /* Convert with or without debuginfo */
2202 ret = convert_to_probe_trace_events(pkgs[i].pev,
2208 pkgs[i].ntevs = ret;
2211 /* Loop 2: add all events */
2212 for (i = 0; i < npevs; i++) {
2213 ret = __add_probe_trace_events(pkgs[i].pev, pkgs[i].tevs,
2214 pkgs[i].ntevs, force_add);
2219 /* Loop 3: cleanup and free trace events */
2220 for (i = 0; i < npevs; i++) {
2221 for (j = 0; j < pkgs[i].ntevs; j++)
2222 clear_probe_trace_event(&pkgs[i].tevs[j]);
2223 zfree(&pkgs[i].tevs);
2231 static int __del_trace_probe_event(int fd, struct str_node *ent)
2237 /* Convert from perf-probe event to trace-probe event */
2238 ret = e_snprintf(buf, 128, "-:%s", ent->s);
2242 p = strchr(buf + 2, ':');
2244 pr_debug("Internal error: %s should have ':' but not.\n",
2251 pr_debug("Writing event: %s\n", buf);
2252 ret = write(fd, buf, strlen(buf));
2258 printf("Removed event: %s\n", ent->s);
2261 pr_warning("Failed to delete event: %s\n", strerror(-ret));
2265 static int del_trace_probe_event(int fd, const char *buf,
2266 struct strlist *namelist)
2268 struct str_node *ent, *n;
2271 if (strpbrk(buf, "*?")) { /* Glob-exp */
2272 strlist__for_each_safe(ent, n, namelist)
2273 if (strglobmatch(ent->s, buf)) {
2274 ret = __del_trace_probe_event(fd, ent);
2277 strlist__remove(namelist, ent);
2280 ent = strlist__find(namelist, buf);
2282 ret = __del_trace_probe_event(fd, ent);
2284 strlist__remove(namelist, ent);
2291 int del_perf_probe_events(struct strlist *dellist)
2293 int ret = -1, ufd = -1, kfd = -1;
2295 const char *group, *event;
2297 struct str_node *ent;
2298 struct strlist *namelist = NULL, *unamelist = NULL;
2300 /* Get current event names */
2301 kfd = open_kprobe_events(true);
2305 namelist = get_probe_trace_event_names(kfd, true);
2306 ufd = open_uprobe_events(true);
2309 unamelist = get_probe_trace_event_names(ufd, true);
2311 if (namelist == NULL && unamelist == NULL)
2314 strlist__for_each(ent, dellist) {
2315 str = strdup(ent->s);
2320 pr_debug("Parsing: %s\n", str);
2321 p = strchr(str, ':');
2331 ret = e_snprintf(buf, 128, "%s:%s", group, event);
2333 pr_err("Failed to copy event.");
2338 pr_debug("Group: %s, Event: %s\n", group, event);
2341 ret = del_trace_probe_event(kfd, buf, namelist);
2343 if (unamelist && ret != 0)
2344 ret = del_trace_probe_event(ufd, buf, unamelist);
2347 pr_info("Info: Event \"%s\" does not exist.\n", buf);
2354 strlist__delete(namelist);
2359 strlist__delete(unamelist);
2366 /* TODO: don't use a global variable for filter ... */
2367 static struct strfilter *available_func_filter;
2370 * If a symbol corresponds to a function with global binding and
2371 * matches filter return 0. For all others return 1.
2373 static int filter_available_functions(struct map *map __maybe_unused,
2376 if (sym->binding == STB_GLOBAL &&
2377 strfilter__compare(available_func_filter, sym->name))
2382 int show_available_funcs(const char *target, struct strfilter *_filter,
2388 ret = init_symbol_maps(user);
2392 /* Get a symbol map */
2394 map = dso__new_map(target);
2396 map = kernel_get_module_map(target);
2398 pr_err("Failed to get a map for %s\n", (target) ? : "kernel");
2402 /* Load symbols with given filter */
2403 available_func_filter = _filter;
2404 if (map__load(map, filter_available_functions)) {
2405 pr_err("Failed to load symbols in %s\n", (target) ? : "kernel");
2408 if (!dso__sorted_by_name(map->dso, map->type))
2409 dso__sort_by_name(map->dso, map->type);
2411 /* Show all (filtered) symbols */
2413 dso__fprintf_symbols_by_name(map->dso, map->type, stdout);
2416 dso__delete(map->dso);
2425 * uprobe_events only accepts address:
2426 * Convert function and any offset to address
2428 static int convert_name_to_addr(struct perf_probe_event *pev, const char *exec)
2430 struct perf_probe_point *pp = &pev->point;
2432 struct map *map = NULL;
2433 char *function = NULL;
2435 unsigned long long vaddr = 0;
2437 if (!pp->function) {
2438 pr_warning("No function specified for uprobes");
2442 function = strdup(pp->function);
2444 pr_warning("Failed to allocate memory by strdup.\n");
2449 map = dso__new_map(exec);
2451 pr_warning("Cannot find appropriate DSO for %s.\n", exec);
2454 available_func_filter = strfilter__new(function, NULL);
2455 if (map__load(map, filter_available_functions)) {
2456 pr_err("Failed to load map.\n");
2460 sym = map__find_symbol_by_name(map, function, NULL);
2462 pr_warning("Cannot find %s in DSO %s\n", function, exec);
2466 if (map->start > sym->start)
2468 vaddr += sym->start + pp->offset + map->pgoff;
2472 pev->event = function;
2476 char *ptr1, *ptr2, *exec_copy;
2478 pev->group = zalloc(sizeof(char *) * 64);
2479 exec_copy = strdup(exec);
2482 pr_warning("Failed to copy exec string.\n");
2486 ptr1 = strdup(basename(exec_copy));
2488 ptr2 = strpbrk(ptr1, "-._");
2491 e_snprintf(pev->group, 64, "%s_%s", PERFPROBE_GROUP,
2498 pp->function = zalloc(sizeof(char *) * MAX_PROBE_ARGS);
2499 if (!pp->function) {
2501 pr_warning("Failed to allocate memory by zalloc.\n");
2504 e_snprintf(pp->function, MAX_PROBE_ARGS, "0x%llx", vaddr);
2509 dso__delete(map->dso);