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Message-ID: <20170630063736.GA2675@amd>
Date: Fri, 30 Jun 2017 08:37:36 +0200
From: Pavel Machek <pavel@....cz>
To: Arvind Yadav <arvind.yadav.cs@...il.com>
Cc: rjw@...ysocki.net, len.brown@...el.com, rafael.j.wysocki@...el.com,
linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] PM / sleep: constify attribute_group structures.
On Fri 2017-06-30 10:22:14, Arvind Yadav wrote:
> attribute_groups are not supposed to change at runtime. All functions
> working with attribute_groups provided by <linux/sysfs.h> work with const
> attribute_group. So mark the non-const structs as const.
>
> File size before:
> text data bss dec hex filename
> 3802 624 32 4458 116a kernel/power/main.o
>
> File size After adding 'const':
> text data bss dec hex filename
> 3866 560 32 4458 116a kernel/power/main.o
>
> Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
Acked-by: Pavel Machek <pavel@....cz>
> ---
> kernel/power/main.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/kernel/power/main.c b/kernel/power/main.c
> index d401c21..42bd800 100644
> --- a/kernel/power/main.c
> +++ b/kernel/power/main.c
> @@ -705,7 +705,7 @@ static ssize_t pm_freeze_timeout_store(struct kobject *kobj,
> NULL,
> };
>
> -static struct attribute_group attr_group = {
> +static const struct attribute_group attr_group = {
> .attrs = g,
> };
>
--
(english) http://www.livejournal.com/~pavelmachek
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