2010-01-20 10:28:45 -07:00
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/*
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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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2012-10-27 15:18:28 -06:00
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#include "util/build-id.h"
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2012-12-07 12:28:27 -07:00
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#include "util/session.h"
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2012-10-27 15:18:29 -06:00
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#include "util/symbol.h"
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2010-01-20 10:28:45 -07:00
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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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2012-09-10 10:50:19 -06:00
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err = build_id_cache__add_s(sbuild_id, debugdir, filename,
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false, false);
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2010-01-20 10:28:45 -07:00
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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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2012-10-01 12:20:58 -06:00
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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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2010-01-20 10:28:45 -07:00
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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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2012-12-07 12:28:27 -07:00
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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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2013-02-07 02:02:11 -07:00
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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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2012-10-01 12:20:58 -06:00
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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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2010-01-20 10:28:45 -07:00
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char debugdir[PATH_MAX];
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2012-10-01 12:20:58 -06:00
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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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2012-10-01 12:20:58 -06:00
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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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2012-12-07 12:28:27 -07:00
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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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2010-01-20 10:28:45 -07:00
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perf buildid: add perfconfig option to specify buildid cache dir
This patch adds the ability to specify an alternate directory to store the
buildid cache (buildids, copy of binaries). By default, it is hardcoded to
$HOME/.debug. This directory contains immutable data. The layout of the
directory is such that no conflicts in filenames are possible. A modification
in a file, yields a different buildid and thus a different location in the
subdir hierarchy.
You may want to put the buildid cache elsewhere because of disk space
limitation or simply to share the cache between users. It is also useful for
remote collect vs. local analysis of profiles.
This patch adds a new config option to the perfconfig file. Under the tag
'buildid', there is a dir option. For instance, if you have:
$ cat /etc/perfconfig
[buildid]
dir = /var/cache/perf-buildid
All buildids and binaries are be saved in the directory specified. The perf
record, buildid-list, buildid-cache, report, annotate, and archive commands
will it to pull information out.
The option can be set in the system-wide perfconfig file or in the
$HOME/.perfconfig file.
Cc: David S. Miller <davem@davemloft.net>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <4c055fb7.df0ce30a.5f0d.ffffae52@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-06-01 13:25:01 -06:00
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snprintf(debugdir, sizeof(debugdir), "%s", buildid_dir);
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2010-01-20 10:28:45 -07:00
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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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2012-12-07 12:28:27 -07:00
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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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2013-02-07 02:02:11 -07:00
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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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2012-12-07 12:28:27 -07:00
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return ret;
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2010-01-20 10:28:45 -07:00
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}
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