![Namhyung Kim](/assets/img/avatar_default.png)
When adding vmlinux file to build-id cache, it'd be fail since kallsyms dso with a same build-id was already added by perf record. So one needs to remove the kallsyms first to add vmlinux into the cache. Add --update option for doing it at once. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1360227734-375-5-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
222 lines
5.6 KiB
C
222 lines
5.6 KiB
C
/*
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* builtin-buildid-cache.c
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*
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* Builtin buildid-cache command: Manages build-id cache
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*
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* Copyright (C) 2010, Red Hat Inc.
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* Copyright (C) 2010, Arnaldo Carvalho de Melo <acme@redhat.com>
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*/
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#include "builtin.h"
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#include "perf.h"
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#include "util/cache.h"
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#include "util/debug.h"
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#include "util/header.h"
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#include "util/parse-options.h"
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#include "util/strlist.h"
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#include "util/build-id.h"
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#include "util/session.h"
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#include "util/symbol.h"
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static int build_id_cache__add_file(const char *filename, const char *debugdir)
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{
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char sbuild_id[BUILD_ID_SIZE * 2 + 1];
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u8 build_id[BUILD_ID_SIZE];
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int err;
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if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) {
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pr_debug("Couldn't read a build-id in %s\n", filename);
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return -1;
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}
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build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
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err = build_id_cache__add_s(sbuild_id, debugdir, filename,
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false, false);
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if (verbose)
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pr_info("Adding %s %s: %s\n", sbuild_id, filename,
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err ? "FAIL" : "Ok");
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return err;
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}
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static int build_id_cache__remove_file(const char *filename,
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const char *debugdir)
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{
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u8 build_id[BUILD_ID_SIZE];
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char sbuild_id[BUILD_ID_SIZE * 2 + 1];
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int err;
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if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) {
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pr_debug("Couldn't read a build-id in %s\n", filename);
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return -1;
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}
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build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
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err = build_id_cache__remove_s(sbuild_id, debugdir);
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if (verbose)
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pr_info("Removing %s %s: %s\n", sbuild_id, filename,
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err ? "FAIL" : "Ok");
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return err;
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}
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static bool dso__missing_buildid_cache(struct dso *dso, int parm __maybe_unused)
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{
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char filename[PATH_MAX];
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u8 build_id[BUILD_ID_SIZE];
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if (dso__build_id_filename(dso, filename, sizeof(filename)) &&
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filename__read_build_id(filename, build_id,
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sizeof(build_id)) != sizeof(build_id)) {
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if (errno == ENOENT)
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return false;
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pr_warning("Problems with %s file, consider removing it from the cache\n",
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filename);
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} else if (memcmp(dso->build_id, build_id, sizeof(dso->build_id))) {
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pr_warning("Problems with %s file, consider removing it from the cache\n",
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filename);
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}
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return true;
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}
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static int build_id_cache__fprintf_missing(const char *filename, bool force, FILE *fp)
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{
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struct perf_session *session = perf_session__new(filename, O_RDONLY,
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force, false, NULL);
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if (session == NULL)
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return -1;
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perf_session__fprintf_dsos_buildid(session, fp, dso__missing_buildid_cache, 0);
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perf_session__delete(session);
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return 0;
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}
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static int build_id_cache__update_file(const char *filename,
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const char *debugdir)
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{
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u8 build_id[BUILD_ID_SIZE];
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char sbuild_id[BUILD_ID_SIZE * 2 + 1];
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int err;
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if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) {
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pr_debug("Couldn't read a build-id in %s\n", filename);
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return -1;
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}
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build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
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err = build_id_cache__remove_s(sbuild_id, debugdir);
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if (!err) {
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err = build_id_cache__add_s(sbuild_id, debugdir, filename,
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false, false);
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}
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if (verbose)
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pr_info("Updating %s %s: %s\n", sbuild_id, filename,
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err ? "FAIL" : "Ok");
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return err;
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}
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int cmd_buildid_cache(int argc, const char **argv,
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const char *prefix __maybe_unused)
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{
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struct strlist *list;
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struct str_node *pos;
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int ret = 0;
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bool force = false;
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char debugdir[PATH_MAX];
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char const *add_name_list_str = NULL,
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*remove_name_list_str = NULL,
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*missing_filename = NULL,
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*update_name_list_str = NULL;
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const struct option buildid_cache_options[] = {
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OPT_STRING('a', "add", &add_name_list_str,
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"file list", "file(s) to add"),
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OPT_STRING('r', "remove", &remove_name_list_str, "file list",
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"file(s) to remove"),
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OPT_STRING('M', "missing", &missing_filename, "file",
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"to find missing build ids in the cache"),
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OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
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OPT_STRING('u', "update", &update_name_list_str, "file list",
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"file(s) to update"),
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OPT_INCR('v', "verbose", &verbose, "be more verbose"),
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OPT_END()
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};
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const char * const buildid_cache_usage[] = {
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"perf buildid-cache [<options>]",
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NULL
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};
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argc = parse_options(argc, argv, buildid_cache_options,
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buildid_cache_usage, 0);
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if (symbol__init() < 0)
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return -1;
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setup_pager();
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snprintf(debugdir, sizeof(debugdir), "%s", buildid_dir);
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if (add_name_list_str) {
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list = strlist__new(true, add_name_list_str);
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if (list) {
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strlist__for_each(pos, list)
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if (build_id_cache__add_file(pos->s, debugdir)) {
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if (errno == EEXIST) {
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pr_debug("%s already in the cache\n",
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pos->s);
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continue;
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}
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pr_warning("Couldn't add %s: %s\n",
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pos->s, strerror(errno));
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}
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strlist__delete(list);
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}
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}
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if (remove_name_list_str) {
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list = strlist__new(true, remove_name_list_str);
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if (list) {
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strlist__for_each(pos, list)
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if (build_id_cache__remove_file(pos->s, debugdir)) {
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if (errno == ENOENT) {
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pr_debug("%s wasn't in the cache\n",
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pos->s);
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continue;
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}
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pr_warning("Couldn't remove %s: %s\n",
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pos->s, strerror(errno));
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}
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strlist__delete(list);
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}
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}
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if (missing_filename)
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ret = build_id_cache__fprintf_missing(missing_filename, force, stdout);
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if (update_name_list_str) {
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list = strlist__new(true, update_name_list_str);
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if (list) {
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strlist__for_each(pos, list)
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if (build_id_cache__update_file(pos->s, debugdir)) {
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if (errno == ENOENT) {
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pr_debug("%s wasn't in the cache\n",
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pos->s);
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continue;
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}
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pr_warning("Couldn't update %s: %s\n",
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pos->s, strerror(errno));
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}
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strlist__delete(list);
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}
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}
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return ret;
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}
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