Commit | Line | Data |
---|---|---|
91007045 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
35563771 ACM |
2 | /* |
3 | * builtin-kallsyms.c | |
4 | * | |
5 | * Builtin command: Look for a symbol in the running kernel and its modules | |
6 | * | |
7 | * Copyright (C) 2017, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> | |
35563771 | 8 | */ |
fd20e811 | 9 | #include <inttypes.h> |
35563771 ACM |
10 | #include "builtin.h" |
11 | #include <linux/compiler.h> | |
12 | #include <subcmd/parse-options.h> | |
13 | #include "debug.h" | |
4a3cec84 | 14 | #include "dso.h" |
35563771 | 15 | #include "machine.h" |
1101f69a | 16 | #include "map.h" |
35563771 ACM |
17 | #include "symbol.h" |
18 | ||
19 | static int __cmd_kallsyms(int argc, const char **argv) | |
20 | { | |
21 | int i; | |
22 | struct machine *machine = machine__new_kallsyms(); | |
23 | ||
24 | if (machine == NULL) { | |
25 | pr_err("Couldn't read /proc/kallsyms\n"); | |
26 | return -1; | |
27 | } | |
28 | ||
29 | for (i = 0; i < argc; ++i) { | |
30 | struct map *map; | |
63df0e4b | 31 | const struct dso *dso; |
107cad95 | 32 | struct symbol *symbol = machine__find_kernel_symbol_by_name(machine, argv[i], &map); |
35563771 ACM |
33 | |
34 | if (symbol == NULL) { | |
35 | printf("%s: not found\n", argv[i]); | |
36 | continue; | |
37 | } | |
38 | ||
63df0e4b | 39 | dso = map__dso(map); |
35563771 | 40 | printf("%s: %s %s %#" PRIx64 "-%#" PRIx64 " (%#" PRIx64 "-%#" PRIx64")\n", |
ee756ef7 | 41 | symbol->name, dso__short_name(dso), dso__long_name(dso), |
78a1f7cd | 42 | map__unmap_ip(map, symbol->start), map__unmap_ip(map, symbol->end), |
35563771 ACM |
43 | symbol->start, symbol->end); |
44 | } | |
45 | ||
46 | machine__delete(machine); | |
47 | return 0; | |
48 | } | |
49 | ||
b0ad8ea6 | 50 | int cmd_kallsyms(int argc, const char **argv) |
35563771 ACM |
51 | { |
52 | const struct option options[] = { | |
53 | OPT_INCR('v', "verbose", &verbose, "be more verbose (show counter open errors, etc)"), | |
54 | OPT_END() | |
55 | }; | |
56 | const char * const kallsyms_usage[] = { | |
57 | "perf kallsyms [<options>] symbol_name", | |
58 | NULL | |
59 | }; | |
60 | ||
61 | argc = parse_options(argc, argv, options, kallsyms_usage, 0); | |
62 | if (argc < 1) | |
63 | usage_with_options(kallsyms_usage, options); | |
64 | ||
35563771 ACM |
65 | symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL); |
66 | if (symbol__init(NULL) < 0) | |
67 | return -1; | |
68 | ||
69 | return __cmd_kallsyms(argc, argv); | |
70 | } |