| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <CAJZ5v0jnVQ78EiaTpyaiRAj4x1HJcN_wpmsgu4xxjq5Jnp2eKA@mail.gmail.com>
Date: Thu, 10 Mar 2022 19:58:37 +0100
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Lianjie Zhang <zhanglianjie@...ontech.com>
Cc: "Rafael J . Wysocki" <rafael@...nel.org>,
Viresh Kumar <viresh.kumar@...aro.org>,
Linux PM <linux-pm@...r.kernel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3] cpufreq: unify the show() and store() styles of attr
and use __ATTR_XX macro
On Thu, Mar 10, 2022 at 3:38 PM Lianjie Zhang
<zhanglianjie@...ontech.com> wrote:
>
> Usually /sys directory under the file, the corresponding Attribute
> contains .show and .store, and their naming style is filename_show() and
> filename_store(). But all naming style in 'cpufreq' is show_filename()
> and store_filename(), resulting in __ATTR_RW() and __ATTR_RO() macros
> cannot be used to simplify code, So need to change naming style.
> Use helper macro __ATTR_XX to make code more clear.
>
> Signed-off-by: Lianjie Zhang <zhanglianjie@...ontech.com>
>
> diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c
> index 08515f7e515f..b6bd0ff35323 100644
> --- a/drivers/cpufreq/cpufreq_conservative.c
> +++ b/drivers/cpufreq/cpufreq_conservative.c
> @@ -146,7 +146,7 @@ static unsigned int cs_dbs_update(struct cpufreq_policy *policy)
>
> /************************** sysfs interface ************************/
>
> -static ssize_t store_sampling_down_factor(struct gov_attr_set *attr_set,
> +static ssize_t sampling_down_factor_store(struct gov_attr_set *attr_set,
> const char *buf, size_t count)
> {
> struct dbs_data *dbs_data = to_dbs_data(attr_set);
> @@ -161,7 +161,7 @@ static ssize_t store_sampling_down_factor(struct gov_attr_set *attr_set,
> return count;
> }
>
> -static ssize_t store_up_threshold(struct gov_attr_set *attr_set,
> +static ssize_t up_threshold_store(struct gov_attr_set *attr_set,
> const char *buf, size_t count)
> {
> struct dbs_data *dbs_data = to_dbs_data(attr_set);
> @@ -177,7 +177,7 @@ static ssize_t store_up_threshold(struct gov_attr_set *attr_set,
> return count;
> }
>
> -static ssize_t store_down_threshold(struct gov_attr_set *attr_set,
> +static ssize_t down_threshold_store(struct gov_attr_set *attr_set,
> const char *buf, size_t count)
> {
> struct dbs_data *dbs_data = to_dbs_data(attr_set);
> @@ -195,7 +195,7 @@ static ssize_t store_down_threshold(struct gov_attr_set *attr_set,
> return count;
> }
>
> -static ssize_t store_ignore_nice_load(struct gov_attr_set *attr_set,
> +static ssize_t ignore_nice_load_store(struct gov_attr_set *attr_set,
> const char *buf, size_t count)
> {
> struct dbs_data *dbs_data = to_dbs_data(attr_set);
> @@ -220,7 +220,7 @@ static ssize_t store_ignore_nice_load(struct gov_attr_set *attr_set,
> return count;
> }
>
> -static ssize_t store_freq_step(struct gov_attr_set *attr_set, const char *buf,
> +static ssize_t freq_step_store(struct gov_attr_set *attr_set, const char *buf,
> size_t count)
> {
> struct dbs_data *dbs_data = to_dbs_data(attr_set);
> diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c
> index 63f7c219062b..0d42cf8b88d8 100644
> --- a/drivers/cpufreq/cpufreq_governor.c
> +++ b/drivers/cpufreq/cpufreq_governor.c
> @@ -27,7 +27,7 @@ static DEFINE_MUTEX(gov_dbs_data_mutex);
>
> /* Common sysfs tunables */
> /*
> - * store_sampling_rate - update sampling rate effective immediately if needed.
> + * sampling_rate_store - update sampling rate effective immediately if needed.
> *
> * If new rate is smaller than the old, simply updating
> * dbs.sampling_rate might not be appropriate. For example, if the
> @@ -41,7 +41,7 @@ static DEFINE_MUTEX(gov_dbs_data_mutex);
> * This must be called with dbs_data->mutex held, otherwise traversing
> * policy_dbs_list isn't safe.
> */
> -ssize_t store_sampling_rate(struct gov_attr_set *attr_set, const char *buf,
> +ssize_t sampling_rate_store(struct gov_attr_set *attr_set, const char *buf,
> size_t count)
> {
> struct dbs_data *dbs_data = to_dbs_data(attr_set);
> @@ -80,7 +80,7 @@ ssize_t store_sampling_rate(struct gov_attr_set *attr_set, const char *buf,
>
> return count;
> }
> -EXPORT_SYMBOL_GPL(store_sampling_rate);
> +EXPORT_SYMBOL_GPL(sampling_rate_store);
>
> /**
> * gov_update_cpu_data - Update CPU load data.
> diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h
> index bab8e6140377..a5a0bc3cc23e 100644
> --- a/drivers/cpufreq/cpufreq_governor.h
> +++ b/drivers/cpufreq/cpufreq_governor.h
> @@ -51,7 +51,7 @@ static inline struct dbs_data *to_dbs_data(struct gov_attr_set *attr_set)
> }
>
> #define gov_show_one(_gov, file_name) \
> -static ssize_t show_##file_name \
> +static ssize_t file_name##_show \
> (struct gov_attr_set *attr_set, char *buf) \
> { \
> struct dbs_data *dbs_data = to_dbs_data(attr_set); \
> @@ -60,7 +60,7 @@ static ssize_t show_##file_name \
> }
>
> #define gov_show_one_common(file_name) \
> -static ssize_t show_##file_name \
> +static ssize_t file_name##_show \
> (struct gov_attr_set *attr_set, char *buf) \
> { \
> struct dbs_data *dbs_data = to_dbs_data(attr_set); \
> @@ -68,12 +68,10 @@ static ssize_t show_##file_name \
> }
>
> #define gov_attr_ro(_name) \
> -static struct governor_attr _name = \
> -__ATTR(_name, 0444, show_##_name, NULL)
> +static struct governor_attr _name = __ATTR_RO(_name)
>
> #define gov_attr_rw(_name) \
> -static struct governor_attr _name = \
> -__ATTR(_name, 0644, show_##_name, store_##_name)
> +static struct governor_attr _name = __ATTR_RW(_name)
>
> /* Common to all CPUs of a policy */
> struct policy_dbs_info {
> @@ -176,7 +174,7 @@ void od_register_powersave_bias_handler(unsigned int (*f)
> (struct cpufreq_policy *, unsigned int, unsigned int),
> unsigned int powersave_bias);
> void od_unregister_powersave_bias_handler(void);
> -ssize_t store_sampling_rate(struct gov_attr_set *attr_set, const char *buf,
> +ssize_t sampling_rate_store(struct gov_attr_set *attr_set, const char *buf,
> size_t count);
> void gov_update_cpu_data(struct dbs_data *dbs_data);
> #endif /* _CPUFREQ_GOVERNOR_H */
> diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
> index 6a41ea4729b8..e8fbf970ff07 100644
> --- a/drivers/cpufreq/cpufreq_ondemand.c
> +++ b/drivers/cpufreq/cpufreq_ondemand.c
> @@ -202,7 +202,7 @@ static unsigned int od_dbs_update(struct cpufreq_policy *policy)
> /************************** sysfs interface ************************/
> static struct dbs_governor od_dbs_gov;
>
> -static ssize_t store_io_is_busy(struct gov_attr_set *attr_set, const char *buf,
> +static ssize_t io_is_busy_store(struct gov_attr_set *attr_set, const char *buf,
> size_t count)
> {
> struct dbs_data *dbs_data = to_dbs_data(attr_set);
> @@ -220,7 +220,7 @@ static ssize_t store_io_is_busy(struct gov_attr_set *attr_set, const char *buf,
> return count;
> }
>
> -static ssize_t store_up_threshold(struct gov_attr_set *attr_set,
> +static ssize_t up_threshold_store(struct gov_attr_set *attr_set,
> const char *buf, size_t count)
> {
> struct dbs_data *dbs_data = to_dbs_data(attr_set);
> @@ -237,7 +237,7 @@ static ssize_t store_up_threshold(struct gov_attr_set *attr_set,
> return count;
> }
>
> -static ssize_t store_sampling_down_factor(struct gov_attr_set *attr_set,
> +static ssize_t sampling_down_factor_store(struct gov_attr_set *attr_set,
> const char *buf, size_t count)
> {
> struct dbs_data *dbs_data = to_dbs_data(attr_set);
> @@ -265,7 +265,7 @@ static ssize_t store_sampling_down_factor(struct gov_attr_set *attr_set,
> return count;
> }
>
> -static ssize_t store_ignore_nice_load(struct gov_attr_set *attr_set,
> +static ssize_t ignore_nice_load_store(struct gov_attr_set *attr_set,
> const char *buf, size_t count)
> {
> struct dbs_data *dbs_data = to_dbs_data(attr_set);
> @@ -290,7 +290,7 @@ static ssize_t store_ignore_nice_load(struct gov_attr_set *attr_set,
> return count;
> }
>
> -static ssize_t store_powersave_bias(struct gov_attr_set *attr_set,
> +static ssize_t powersave_bias_store(struct gov_attr_set *attr_set,
> const char *buf, size_t count)
> {
> struct dbs_data *dbs_data = to_dbs_data(attr_set);
> --
Applied as 5.18 material with some edits in the subject and changelog.
Thanks!
Powered by blists - more mailing lists