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>,
Masami Hiramatsu <mhiramat@kernel.org>,
Taeung Song <treeze.taeung@gmail.com>
Subject: [PATCH v8 1/4] perf config: Introduce perf_config_set class
Date: Thu, 14 Apr 2016 16:53:18 +0900 [thread overview]
Message-ID: <1460620401-23430-2-git-send-email-treeze.taeung@gmail.com> (raw)
In-Reply-To: <1460620401-23430-1-git-send-email-treeze.taeung@gmail.com>
This infrastructure code was designed for
upcoming features of perf-config.
That collect config key-value pairs from user and
system config files (i.e. user wide ~/.perfconfig
and system wide $(sysconfdir)/perfconfig)
to manage perf's configs.
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
---
tools/perf/util/config.c | 173 +++++++++++++++++++++++++++++++++++++++++++++++
tools/perf/util/config.h | 26 +++++++
2 files changed, 199 insertions(+)
create mode 100644 tools/perf/util/config.h
diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 664490b..dad7d82 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -13,6 +13,7 @@
#include <subcmd/exec-cmd.h>
#include "util/hist.h" /* perf_hist_config */
#include "util/llvm-utils.h" /* perf_llvm_config */
+#include "config.h"
#define MAXNAME (256)
@@ -524,6 +525,178 @@ out:
return ret;
}
+static struct perf_config_section *find_section(struct list_head *sections,
+ const char *section_name)
+{
+ struct perf_config_section *section;
+
+ list_for_each_entry(section, sections, node)
+ if (!strcmp(section->name, section_name))
+ return section;
+
+ return NULL;
+}
+
+static struct perf_config_item *find_config_item(const char *name,
+ struct perf_config_section *section)
+{
+ struct perf_config_item *item;
+
+ list_for_each_entry(item, §ion->items, node)
+ if (!strcmp(item->name, name))
+ return item;
+
+ return NULL;
+}
+
+static struct perf_config_section *add_section(struct list_head *sections,
+ const char *section_name)
+{
+ struct perf_config_section *section = zalloc(sizeof(*section));
+
+ if (!section)
+ return NULL;
+
+ INIT_LIST_HEAD(§ion->items);
+ section->name = strdup(section_name);
+ if (!section->name) {
+ pr_debug("%s: strdup failed\n", __func__);
+ free(section);
+ return NULL;
+ }
+
+ list_add_tail(§ion->node, sections);
+ return section;
+}
+
+static struct perf_config_item *add_config_item(struct perf_config_section *section,
+ const char *name)
+{
+ struct perf_config_item *item = zalloc(sizeof(*item));
+
+ if (!item)
+ return NULL;
+
+ item->name = strdup(name);
+ if (!item->name) {
+ pr_debug("%s: strdup failed\n", __func__);
+ free(item);
+ return NULL;
+ }
+
+ list_add_tail(&item->node, §ion->items);
+ return item;
+}
+
+static int set_value(struct perf_config_item *item, const char *value)
+{
+ char *val = strdup(value);
+
+ if (!val)
+ return -1;
+
+ zfree(&item->value);
+ item->value = val;
+ return 0;
+}
+
+static int collect_config(const char *var, const char *value,
+ void *perf_config_set)
+{
+ int ret = -1;
+ char *ptr, *key;
+ char *section_name, *name;
+ struct perf_config_section *section = NULL;
+ struct perf_config_item *item = NULL;
+ struct perf_config_set *set = perf_config_set;
+ struct list_head *sections = &set->sections;
+
+ key = ptr = strdup(var);
+ if (!key) {
+ pr_debug("%s: strdup failed\n", __func__);
+ return -1;
+ }
+
+ section_name = strsep(&ptr, ".");
+ name = ptr;
+ if (name == NULL || value == NULL)
+ goto out_free;
+
+ section = find_section(sections, section_name);
+ if (!section) {
+ section = add_section(sections, section_name);
+ if (!section)
+ goto out_free;
+ }
+
+ item = find_config_item(name, section);
+ if (!item) {
+ item = add_config_item(section, name);
+ if (!item)
+ goto out_free;
+ }
+
+ ret = set_value(item, value);
+ return ret;
+
+out_free:
+ free(key);
+ perf_config_set__delete(set);
+ return -1;
+}
+
+struct perf_config_set *perf_config_set__new(void)
+{
+ struct perf_config_set *set = zalloc(sizeof(*set));
+
+ if (set) {
+ INIT_LIST_HEAD(&set->sections);
+ perf_config(collect_config, set);
+ }
+
+ return set;
+}
+
+static void perf_config_item__delete(struct perf_config_item *item)
+{
+ zfree(&item->name);
+ zfree(&item->value);
+ free(item);
+}
+
+static void perf_config_section__purge(struct perf_config_section *section)
+{
+ struct perf_config_item *item, *tmp;
+
+ list_for_each_entry_safe(item, tmp, §ion->items, node) {
+ list_del_init(&item->node);
+ perf_config_item__delete(item);
+ }
+}
+
+static void perf_config_section__delete(struct perf_config_section *section)
+{
+ perf_config_section__purge(section);
+ zfree(§ion->name);
+ free(section);
+}
+
+static void perf_config_set__purge(struct perf_config_set *set)
+{
+ struct perf_config_section *section, *tmp;
+
+ list_for_each_entry_safe(section, tmp, &set->sections, node) {
+ list_del_init(§ion->node);
+ perf_config_section__delete(section);
+ }
+}
+
+void perf_config_set__delete(struct perf_config_set *set)
+{
+ perf_config_set__purge(set);
+ free(set);
+}
+
/*
* Call this to report error for your variable that should not
* get a boolean value (i.e. "[my] var" means "true").
diff --git a/tools/perf/util/config.h b/tools/perf/util/config.h
new file mode 100644
index 0000000..22ec626
--- /dev/null
+++ b/tools/perf/util/config.h
@@ -0,0 +1,26 @@
+#ifndef __PERF_CONFIG_H
+#define __PERF_CONFIG_H
+
+#include <stdbool.h>
+#include <linux/list.h>
+
+struct perf_config_item {
+ char *name;
+ char *value;
+ struct list_head node;
+};
+
+struct perf_config_section {
+ char *name;
+ struct list_head items;
+ struct list_head node;
+};
+
+struct perf_config_set {
+ struct list_head sections;
+};
+
+struct perf_config_set *perf_config_set__new(void);
+void perf_config_set__delete(struct perf_config_set *set);
+
+#endif /* __PERF_CONFIG_H */
--
2.5.0
next prev parent reply other threads:[~2016-04-14 7:53 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-14 7:53 [RFC][PATCH v8 0/4] Infrastructure code for perf-config Taeung Song
2016-04-14 7:53 ` Taeung Song [this message]
2016-04-14 13:37 ` [tip:perf/core] perf config: Introduce perf_config_set class tip-bot for Taeung Song
2016-04-14 7:53 ` [PATCH v8 2/4] perf config: Let show_config() work with perf_config_set Taeung Song
2016-04-14 13:37 ` [tip:perf/core] perf config: Make show_config() use perf_config_set tip-bot for Taeung Song
2016-04-14 7:53 ` [PATCH v8 3/4] perf config: Prepare all default configs Taeung Song
2016-04-14 12:19 ` Arnaldo Carvalho de Melo
2016-04-14 16:42 ` Taeung Song
2016-04-18 14:55 ` Taeung Song
2016-04-20 12:44 ` Namhyung Kim
2016-04-20 13:22 ` Arnaldo Carvalho de Melo
2016-04-20 15:29 ` Taeung Song
2016-04-20 15:11 ` Taeung Song
2016-04-14 7:53 ` [PATCH v8 4/4] perf config: Initialize perf_config_set with " Taeung Song
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