| /* |
| * builtin-kallsyms.c |
| * |
| * Builtin command: Look for a symbol in the running kernel and its modules |
| * |
| * Copyright (C) 2017, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> |
| * |
| * Released under the GPL v2. (and only v2, not any later version) |
| */ |
| #include <inttypes.h> |
| #include "builtin.h" |
| #include <linux/compiler.h> |
| #include <subcmd/parse-options.h> |
| #include "debug.h" |
| #include "machine.h" |
| #include "symbol.h" |
| |
| static int __cmd_kallsyms(int argc, const char **argv) |
| { |
| int i; |
| struct machine *machine = machine__new_kallsyms(); |
| |
| if (machine == NULL) { |
| pr_err("Couldn't read /proc/kallsyms\n"); |
| return -1; |
| } |
| |
| for (i = 0; i < argc; ++i) { |
| struct map *map; |
| struct symbol *symbol = machine__find_kernel_function_by_name(machine, argv[i], &map); |
| |
| if (symbol == NULL) { |
| printf("%s: not found\n", argv[i]); |
| continue; |
| } |
| |
| printf("%s: %s %s %#" PRIx64 "-%#" PRIx64 " (%#" PRIx64 "-%#" PRIx64")\n", |
| symbol->name, map->dso->short_name, map->dso->long_name, |
| map->unmap_ip(map, symbol->start), map->unmap_ip(map, symbol->end), |
| symbol->start, symbol->end); |
| } |
| |
| machine__delete(machine); |
| return 0; |
| } |
| |
| int cmd_kallsyms(int argc, const char **argv) |
| { |
| const struct option options[] = { |
| OPT_INCR('v', "verbose", &verbose, "be more verbose (show counter open errors, etc)"), |
| OPT_END() |
| }; |
| const char * const kallsyms_usage[] = { |
| "perf kallsyms [<options>] symbol_name", |
| NULL |
| }; |
| |
| argc = parse_options(argc, argv, options, kallsyms_usage, 0); |
| if (argc < 1) |
| usage_with_options(kallsyms_usage, options); |
| |
| symbol_conf.sort_by_name = true; |
| symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL); |
| if (symbol__init(NULL) < 0) |
| return -1; |
| |
| return __cmd_kallsyms(argc, argv); |
| } |