From: Taeung Song <treeze.taeung@gmail.com>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: linux-kernel@vger.kernel.org, Jiri Olsa <jolsa@kernel.org>,
Namhyung Kim <namhyung@kernel.org>,
Ingo Molnar <mingo@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Masami Hiramatsu <mhiramat@kernel.org>,
Taeung Song <treeze.taeung@gmail.com>,
Jiri Olsa <jolsa@redhat.com>, Wang Nan <wangnan0@huawei.com>,
Ingo Molnar <mingo@redhat.com>
Subject: [PATCH v7 5/7] perf config: Reimplement perf_config() using perf_config_set__iter()
Date: Tue, 7 Jun 2016 18:26:15 +0900 [thread overview]
Message-ID: <1465291577-20973-6-git-send-email-treeze.taeung@gmail.com> (raw)
In-Reply-To: <1465291577-20973-1-git-send-email-treeze.taeung@gmail.com>
Everytime perf_config() is called, perf_config() always read config files.
(i.e. user config '~/.perfconfig' and system config '$(sysconfdir)/perfconfig')
But we need to use the config set that already contains all config
key-value pairs to avoid this repetitive work reading the config files
in perf_config(). (the config set mean a global variable 'config_set')
In other words, if new perf_config() is called,
only first time 'config_set' is initialized collecting all configs
from the config files and it work with perf_config_set__iter().
And free the config set after sub-command work at run_builtin().
If we do, 'config_set' can be reused wherever using perf_config()
and a feature of old perf_config() is the same as new perf_config() work
without the repetitive work that read the config files.
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
---
tools/perf/perf.c | 1 +
tools/perf/util/cache.h | 1 +
tools/perf/util/config.c | 86 +++++++++++++++++++++++-------------------------
3 files changed, 43 insertions(+), 45 deletions(-)
diff --git a/tools/perf/perf.c b/tools/perf/perf.c
index 15982ce..058d5dc 100644
--- a/tools/perf/perf.c
+++ b/tools/perf/perf.c
@@ -391,6 +391,7 @@ static int run_builtin(struct cmd_struct *p, int argc, const char **argv)
perf_env__set_cmdline(&perf_env, argc, argv);
status = p->fn(argc, argv, prefix);
+ perf_config_set__delete(&config_set);
exit_browser(status);
perf_env__exit(&perf_env);
bpf__clear();
diff --git a/tools/perf/util/cache.h b/tools/perf/util/cache.h
index 0d814bb..54bbd55 100644
--- a/tools/perf/util/cache.h
+++ b/tools/perf/util/cache.h
@@ -7,6 +7,7 @@
#include <subcmd/pager.h>
#include "../perf.h"
#include "../ui/ui.h"
+#include "config.h"
#include <linux/string.h>
diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 2441585..23fb8e4 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -479,51 +479,6 @@ static int perf_config_global(void)
return !perf_env_bool("PERF_CONFIG_NOGLOBAL", 0);
}
-int perf_config(config_fn_t fn, void *data)
-{
- int ret = -1;
- const char *home = NULL;
-
- /* Setting $PERF_CONFIG makes perf read _only_ the given config file. */
- if (config_exclusive_filename)
- return perf_config_from_file(fn, config_exclusive_filename, data);
- if (perf_config_system() && !access(perf_etc_perfconfig(), R_OK)) {
- if (perf_config_from_file(fn, perf_etc_perfconfig(), data) < 0)
- goto out;
- }
-
- home = getenv("HOME");
- if (perf_config_global() && home) {
- char *user_config = strdup(mkpath("%s/.perfconfig", home));
- struct stat st;
-
- if (user_config == NULL) {
- warning("Not enough memory to process %s/.perfconfig, "
- "ignoring it.", home);
- goto out;
- }
-
- if (stat(user_config, &st) < 0)
- goto out_free;
-
- if (st.st_uid && (st.st_uid != geteuid())) {
- warning("File %s not owned by current user or root, "
- "ignoring it.", user_config);
- goto out_free;
- }
-
- if (!st.st_size)
- goto out_free;
-
- ret = perf_config_from_file(fn, user_config, data);
-
-out_free:
- free(user_config);
- }
-out:
- return ret;
-}
-
static struct perf_config_section *find_section(struct list_head *sections,
const char *section_name)
{
@@ -707,6 +662,47 @@ struct perf_config_set *perf_config_set__new(void)
return set;
}
+static int perf_config_set__iter(struct perf_config_set *set, config_fn_t fn, void *data)
+{
+ struct perf_config_section *section;
+ struct perf_config_item *item;
+ struct list_head *sections;
+ char key[BUFSIZ];
+
+ if (set == NULL)
+ return -1;
+
+ sections = &set->sections;
+ if (list_empty(sections))
+ return -1;
+
+ list_for_each_entry(section, sections, node) {
+ list_for_each_entry(item, §ion->items, node) {
+ char *value = item->value;
+
+ if (value) {
+ scnprintf(key, sizeof(key), "%s.%s",
+ section->name, item->name);
+ if (fn(key, value, data) < 0) {
+ pr_err("Error: wrong config key-value pair %s=%s\n",
+ key, value);
+ return -1;
+ }
+ }
+ }
+ }
+
+ return 0;
+}
+
+int perf_config(config_fn_t fn, void *data)
+{
+ if (config_set == NULL)
+ config_set = perf_config_set__new();
+
+ return perf_config_set__iter(config_set, fn, data);
+}
+
static void perf_config_item__delete(struct perf_config_item *item)
{
zfree(&item->name);
--
2.5.0
next prev parent reply other threads:[~2016-06-07 9:26 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-07 9:26 [RFC][PATCH v7 0/9] perf config: Reimplement perf_config() using perf_config_set__inter() Taeung Song
2016-06-07 9:26 ` [BUGFIX][PATCH v7 1/7] perf config: If collect_config() is failed, finally free a config set after it is done Taeung Song
2016-06-08 8:44 ` [tip:perf/core] perf config: Constructor should free its allocated memory when failing tip-bot for Taeung Song
2016-06-07 9:26 ` [PATCH v7 2/7] perf config: Use new perf_config_set__init() to initialize config set Taeung Song
2016-06-08 8:45 ` [tip:perf/core] " tip-bot for Taeung Song
2016-06-07 9:26 ` [PATCH v7 3/7] perf config: Add global variable 'config_set' Taeung Song
2016-06-07 14:05 ` Arnaldo Carvalho de Melo
2016-06-07 15:14 ` Taeung Song
2016-06-08 12:38 ` Taeung Song
2016-06-07 9:26 ` [PATCH v7 4/7] perf config: Use zfree() instead of free() at perf_config_set__delete() Taeung Song
2016-06-07 9:26 ` Taeung Song [this message]
2016-06-07 9:26 ` [PATCH v7 6/7] perf config: Reset the config set at only 'config' sub-command Taeung Song
2016-06-07 9:26 ` [PATCH v7 7/7] perf config: Reimplement show_config() using perf_config() Taeung Song
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