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Date: Wed, 30 Mar 2016 08:28:21 +0900
From: Taeung Song <treeze.taeung@...il.com>
To: Namhyung Kim <namhyung@...nel.org>
Cc: Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>,
linux-kernel@...r.kernel.org, Jiri Olsa <jolsa@...nel.org>,
Ingo Molnar <mingo@...nel.org>,
Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH v4 1/4] perf config: Introduce perf_config_set class
Hi, Arnaldo and Namhyung
On 03/30/2016 01:12 AM, Arnaldo Carvalho de Melo wrote:
> Em Tue, Mar 29, 2016 at 09:43:13AM +0900, Taeung Song escreveu:
>> 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.
>>
>> Cc: Namhyung Kim <namhyung@...nel.org>
>> Cc: Jiri Olsa <jolsa@...nel.org>
>> Signed-off-by: Taeung Song <treeze.taeung@...il.com>
>
> Waiting for ack.
Namhyung,
The difference between v3 and v4 for this patch as below.
(fill perf_config_set__delete() in collect_config() for state of error)
Can you review this patch, again ?
diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 725015f..2cfafff 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -705,14 +706,15 @@ static int set_value(struct perf_config_item
*config_item, const char *value)
}
static int collect_config(const char *var, const char *value,
- void *section_list)
+ void *perf_config_set)
{
int ret = -1;
char *ptr, *key;
char *section_name, *name;
struct perf_config_section *section = NULL;
struct perf_config_item *config_item = NULL;
- struct list_head *sections = section_list;
+ struct perf_config_set *perf_configs = perf_config_set;
+ struct list_head *sections = &perf_configs->sections;
key = ptr = strdup(var);
if (!key) {
@@ -743,7 +745,8 @@ static int collect_config(const char *var, const
char *value,
out_free:
free(key);
- return ret;
+ perf_config_set__delete(perf_configs);
+ return -1;
}
static struct perf_config_set *perf_config_set__init(struct
perf_config_set *perf_configs)
@@ -777,7 +780,7 @@ struct perf_config_set *perf_config_set__new(void)
return NULL;
perf_config_set__init(perf_configs);
- perf_config(collect_config, &perf_configs->sections);
+ perf_config(collect_config, perf_configs);
return perf_configs;
}
Thanks,
Taeung
>> ---
>> tools/perf/util/config.c | 171 +++++++++++++++++++++++++++++++++++++++++++++++
>> tools/perf/util/config.h | 26 +++++++
>> 2 files changed, 197 insertions(+)
>> create mode 100644 tools/perf/util/config.h
>>
>> diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
>> index 4e72763..2dbf47c 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)
>>
>> @@ -506,6 +507,176 @@ 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, list)
>> + 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 *config_item;
>> +
>> + list_for_each_entry(config_item, §ion->config_items, list)
>> + if (!strcmp(config_item->name, name))
>> + return config_item;
>> +
>> + return NULL;
>> +}
>> +
>> +static void find_config(struct list_head *sections,
>> + struct perf_config_section **section,
>> + struct perf_config_item **config_item,
>> + const char *section_name, const char *name)
>> +{
>> + *section = find_section(sections, section_name);
>> +
>> + if (*section != NULL)
>> + *config_item = find_config_item(name, *section);
>> + else
>> + *config_item = 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->config_items);
>> + section->name = strdup(section_name);
>> + if (!section->name) {
>> + pr_err("%s: strdup failed\n", __func__);
>> + free(section);
>> + return NULL;
>> + }
>> +
>> + list_add_tail(§ion->list, sections);
>> + return section;
>> +}
>> +
>> +static struct perf_config_item *add_config_item(struct perf_config_section *section,
>> + const char *name)
>> +{
>> + struct perf_config_item *config_item = zalloc(sizeof(*config_item));
>> +
>> + if (!config_item)
>> + return NULL;
>> +
>> + config_item->name = strdup(name);
>> + if (!name) {
>> + pr_err("%s: strdup failed\n", __func__);
>> + goto out_err;
>> + }
>> +
>> + list_add_tail(&config_item->list, §ion->config_items);
>> + return config_item;
>> +
>> +out_err:
>> + free(config_item);
>> + return NULL;
>> +}
>> +
>> +static int set_value(struct perf_config_item *config_item, const char *value)
>> +{
>> + char *val = strdup(value);
>> +
>> + if (!val)
>> + return -1;
>> +
>> + free(config_item->value);
>> + config_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 *config_item = NULL;
>> + struct perf_config_set *perf_configs = perf_config_set;
>> + struct list_head *sections = &perf_configs->sections;
>> +
>> + key = ptr = strdup(var);
>> + if (!key) {
>> + pr_err("%s: strdup failed\n", __func__);
>> + return -1;
>> + }
>> +
>> + section_name = strsep(&ptr, ".");
>> + name = ptr;
>> + if (name == NULL || value == NULL)
>> + goto out_free;
>> +
>> + find_config(sections, §ion, &config_item, section_name, name);
>> +
>> + if (!section) {
>> + section = add_section(sections, section_name);
>> + if (!section)
>> + goto out_free;
>> + }
>> + if (!config_item) {
>> + config_item = add_config_item(section, name);
>> + if (!config_item)
>> + goto out_free;
>> + }
>> +
>> + ret = set_value(config_item, value);
>> + return ret;
>> +
>> +out_free:
>> + free(key);
>> + perf_config_set__delete(perf_configs);
>> + return -1;
>> +}
>> +
>> +struct perf_config_set *perf_config_set__new(void)
>> +{
>> + struct perf_config_set *perf_configs = zalloc(sizeof(*perf_configs));
>> +
>> + if (!perf_configs)
>> + return NULL;
>> +
>> + INIT_LIST_HEAD(&perf_configs->sections);
>> + perf_config(collect_config, perf_configs);
>> +
>> + return perf_configs;
>> +}
>> +
>> +void perf_config_set__delete(struct perf_config_set *perf_configs)
>> +{
>> + struct perf_config_section *section, *section_tmp;
>> + struct perf_config_item *config_item, *item_tmp;
>> +
>> + list_for_each_entry_safe(section, section_tmp,
>> + &perf_configs->sections, list) {
>> + list_for_each_entry_safe(config_item, item_tmp,
>> + §ion->config_items, list) {
>> + list_del(&config_item->list);
>> + free(config_item->name);
>> + free(config_item->value);
>> + free(config_item);
>> + }
>> + list_del(§ion->list);
>> + free(section->name);
>> + free(section);
>> + }
>> +
>> + free(perf_configs);
>> +}
>> +
>> /*
>> * 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..e270e51
>> --- /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 list;
>> +};
>> +
>> +struct perf_config_section {
>> + char *name;
>> + struct list_head config_items;
>> + struct list_head list;
>> +};
>> +
>> +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 *perf_configs);
>> +
>> +#endif /* __PERF_CONFIG_H */
>> --
>> 2.5.0
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