linux/tools/perf/builtin-kallsyms.c
Ian Rogers 78a1f7cd90 perf map: Add helper for ->map_ip() and ->unmap_ip()
Later changes will add reference count checking for struct map, add a
helper function to invoke the map_ip and unmap_ip function pointers. The
helper allows the reference count check to be in fewer places.

Committer notes:

Add missing conversions to:

  tools/perf/util/map.c
  tools/perf/util/cs-etm.c
  tools/perf/util/annotate.c
  tools/perf/arch/powerpc/util/sym-handling.c
  tools/perf/arch/s390/annotate/instructions.c

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Darren Hart <dvhart@infradead.org>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Dmitriy Vyukov <dvyukov@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: German Gomez <german.gomez@arm.com>
Cc: Hao Luo <haoluo@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Riccardo Mancini <rickyman7@gmail.com>
Cc: Shunsuke Nakamura <nakamura.shun@fujitsu.com>
Cc: Song Liu <song@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Stephen Brennan <stephen.s.brennan@oracle.com>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Yury Norov <yury.norov@gmail.com>
Link: https://lore.kernel.org/r/20230404205954.2245628-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-04-06 22:10:17 -03:00

72 lines
1.7 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* 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>
*/
#include <inttypes.h>
#include "builtin.h"
#include <linux/compiler.h>
#include <subcmd/parse-options.h>
#include "debug.h"
#include "dso.h"
#include "machine.h"
#include "map.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;
const struct dso *dso;
struct symbol *symbol = machine__find_kernel_symbol_by_name(machine, argv[i], &map);
if (symbol == NULL) {
printf("%s: not found\n", argv[i]);
continue;
}
dso = map__dso(map);
printf("%s: %s %s %#" PRIx64 "-%#" PRIx64 " (%#" PRIx64 "-%#" PRIx64")\n",
symbol->name, dso->short_name, 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);
}