mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-12-29 17:25:38 +00:00
ee756ef749
Add reference count checking to struct dso, this can help with
implementing correct reference counting discipline. To avoid
RC_CHK_ACCESS everywhere, add accessor functions for the variables in
struct dso.
The majority of the change is mechanical in nature and not easy to
split up.
Committer testing:
'perf test' up to this patch shows no regressions.
But:
util/symbol.c: In function ‘dso__load_bfd_symbols’:
util/symbol.c:1683:9: error: too few arguments to function ‘dso__set_adjust_symbols’
1683 | dso__set_adjust_symbols(dso);
| ^~~~~~~~~~~~~~~~~~~~~~~
In file included from util/symbol.c:21:
util/dso.h:268:20: note: declared here
268 | static inline void dso__set_adjust_symbols(struct dso *dso, bool val)
| ^~~~~~~~~~~~~~~~~~~~~~~
make[6]: *** [/home/acme/git/perf-tools-next/tools/build/Makefile.build:106: /tmp/tmp.ZWHbQftdN6/util/symbol.o] Error 1
MKDIR /tmp/tmp.ZWHbQftdN6/tests/workloads/
make[6]: *** Waiting for unfinished jobs....
This was updated:
- symbols__fixup_end(&dso->symbols, false);
- symbols__fixup_duplicate(&dso->symbols);
- dso->adjust_symbols = 1;
+ symbols__fixup_end(dso__symbols(dso), false);
+ symbols__fixup_duplicate(dso__symbols(dso));
+ dso__set_adjust_symbols(dso);
But not build tested with BUILD_NONDISTRO and libbfd devel files installed
(binutils-devel on fedora).
Add the missing argument:
symbols__fixup_end(dso__symbols(dso), false);
symbols__fixup_duplicate(dso__symbols(dso));
- dso__set_adjust_symbols(dso);
+ dso__set_adjust_symbols(dso, true);
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Ben Gainey <ben.gainey@arm.com>
Cc: Changbin Du <changbin.du@huawei.com>
Cc: Chengen Du <chengen.du@canonical.com>
Cc: Colin Ian King <colin.i.king@gmail.com>
Cc: Dima Kogan <dima@secretsauce.net>
Cc: Ilkka Koskinen <ilkka@os.amperecomputing.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: K Prateek Nayak <kprateek.nayak@amd.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Li Dong <lidong@vivo.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paran Lee <p4ranlee@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <song@kernel.org>
Cc: Sun Haiyong <sunhaiyong@loongson.cn>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Tiezhu Yang <yangtiezhu@loongson.cn>
Cc: Yanteng Si <siyanteng@loongson.cn>
Cc: zhaimingbing <zhaimingbing@cmss.chinamobile.com>
Link: https://lore.kernel.org/r/20240504213803.218974-6-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
71 lines
1.7 KiB
C
71 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), dso__long_name(dso),
|
|
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.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL);
|
|
if (symbol__init(NULL) < 0)
|
|
return -1;
|
|
|
|
return __cmd_kallsyms(argc, argv);
|
|
}
|