perf/util/probe-event.c

153 	const char *module;
161 	const char *short_name = dso->short_name; /* short_name is "[module]" */
164 	if (strncmp(short_name + 1, args->module, short_name_len - 2) == 0 &&
165 	    args->module[short_name_len - 2] == '\0') {
172 static struct map *kernel_get_module_map(const char *module)
175 		.module = module,
179 	/* A file path -- this is an offline module */
180 	if (module && strchr(module, '/'))
181 		return dso__new_map(module);
183 	if (!module) {
287  * @module can be module name of module file path. In case of path,
288  * inspect elf and find out what is actual module name.
291 static char *find_module_name(const char *module)
302 	fd = open(module, O_RDONLY);
324 	 * '.gnu.linkonce.this_module' section of kernel module elf directly
325 	 * maps to 'struct module' from linux/module.h. This section contains
326 	 * actual module name which will be used by kernel after loading it.
327 	 * But, we cannot use 'struct module' here since linux/module.h is not
347 static int kernel_get_module_dso(const char *module, struct dso **pdso)
354 	if (module) {
357 		snprintf(module_name, sizeof(module_name), "[%s]", module);
364 		pr_debug("Failed to find module %s.\n", module);
530 /* Open new debuginfo of given module */
531 static struct debuginfo *open_debuginfo(const char *module, struct nsinfo *nsi,
534 	const char *path = module;
541 	if (!module || !strchr(module, '/')) {
542 		err = kernel_get_module_dso(module, &dso);
554 				if (module)
555 					pr_err("Module %s is not loaded, please specify its full path name.\n", module);
567 		if (!module || !strtailcmp(path, ".ko"))
581 static struct debuginfo *debuginfo_cache__open(const char *module, bool silent)
583 	const char *path = module;
585 	/* If the module is NULL, it should be the kernel. */
586 	if (!module)
592 	/* Copy module path */
601 	debuginfo_cache = open_debuginfo(module, NULL, silent);
671 		ret = get_text_start_address(tp->module, &stext, NULL);
676 		/* If the module is given, this returns relative address */
678 							false, !!tp->module);
685 		 tp->module ? : "kernel");
687 	dinfo = debuginfo_cache__open(tp->module, verbose <= 0);
785 		tevs[i].point.module = strdup(exec);
786 		if (!tevs[i].point.module) {
798 				       int ntevs, const char *module,
806 	if (!module)
809 	map = get_target_map(module, NULL, false);
811 		pr_warning("Failed to get ELF symbols for %s\n", module);
815 	mod_name = find_module_name(module);
821 		tevs[i].point.module =
822 			strdup(mod_name ? mod_name : module);
823 		if (!tevs[i].point.module) {
899 					   int ntevs, const char *module,
905 		ret = add_exec_to_probe_trace_events(tevs, ntevs, module,
907 	else if (module)
910 							     module, dinfo);
932 	 * same issue with kernel module. The retprobe doesn`t need debuginfo.
1048 static int __show_line_range(struct line_range *lr, const char *module,
1062 	dinfo = open_debuginfo(module, NULL, false);
1068 		ret = get_alternative_line_range(dinfo, lr, module, user);
1142 int show_line_range(struct line_range *lr, const char *module,
1152 	ret = __show_line_range(lr, module, user);
1279 		    const char *module __maybe_unused,
1904 	/* Scan module name(if there), function name and offset */
1907 		tp->module = strndup(argv[1], p - argv[1]);
1908 		if (!tp->module) {
1912 		tev->uprobes = (tp->module[0] == '/');
2177 	/* Uprobes must have tp->module */
2178 	if (!tp->module)
2190 	err = strbuf_addf(buf, "%s:0x%" PRIx64, tp->module, tp->address);
2205 		return strbuf_addf(buf, "%s%s0x%" PRIx64, tp->module ?: "",
2206 				  tp->module ? ":" : "", tp->address);
2208 		return strbuf_addf(buf, "%s%s%s+%lu", tp->module ?: "",
2209 				tp->module ? ":" : "", tp->symbol, tp->offset);
2252 		map = dso__new_map(tp->module);
2465 	zfree(&tev->point.module);
2592 				     const char *module,
2612 	if (!ret && module)
2613 		ret = strbuf_addf(result, " in %s", module);
2634 			  const char *module, bool use_stdout)
2639 	ret = perf_probe_event__sprintf(group, event, pev, module, &buf);
2692 						    &pev, tev.point.module,
3151 		/* Check the kprobe (not in module) is within .text  */
3168 				tev->point.module = strdup_or_goto(pev->target,
3172 				tev->point.module =
3175 				if (!tev->point.module)
3276 		tp->module = strdup(pev->target);
3277 		if (!tp->module)