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git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blob - tools/perf/builtin-kallsyms.c
4 * Builtin command: Look for a symbol in the running kernel and its modules
6 * Copyright (C) 2017, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
8 * Released under the GPL v2. (and only v2, not any later version)
12 #include <linux/compiler.h>
13 #include <subcmd/parse-options.h>
18 static int __cmd_kallsyms(int argc
, const char **argv
)
21 struct machine
*machine
= machine__new_kallsyms();
23 if (machine
== NULL
) {
24 pr_err("Couldn't read /proc/kallsyms\n");
28 for (i
= 0; i
< argc
; ++i
) {
30 struct symbol
*symbol
= machine__find_kernel_symbol_by_name(machine
, argv
[i
], &map
);
33 printf("%s: not found\n", argv
[i
]);
37 printf("%s: %s %s %#" PRIx64
"-%#" PRIx64
" (%#" PRIx64
"-%#" PRIx64
")\n",
38 symbol
->name
, map
->dso
->short_name
, map
->dso
->long_name
,
39 map
->unmap_ip(map
, symbol
->start
), map
->unmap_ip(map
, symbol
->end
),
40 symbol
->start
, symbol
->end
);
43 machine__delete(machine
);
47 int cmd_kallsyms(int argc
, const char **argv
)
49 const struct option options
[] = {
50 OPT_INCR('v', "verbose", &verbose
, "be more verbose (show counter open errors, etc)"),
53 const char * const kallsyms_usage
[] = {
54 "perf kallsyms [<options>] symbol_name",
58 argc
= parse_options(argc
, argv
, options
, kallsyms_usage
, 0);
60 usage_with_options(kallsyms_usage
, options
);
62 symbol_conf
.sort_by_name
= true;
63 symbol_conf
.try_vmlinux_path
= (symbol_conf
.vmlinux_name
== NULL
);
64 if (symbol__init(NULL
) < 0)
67 return __cmd_kallsyms(argc
, argv
);