linux-kernel - Re: [PATCH] cpufreq: longhaul: Make array speeds static const

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Message-ID: <20221103143705.6g3geneixpmguaq5@vireshk-i7>
Date:   Thu, 3 Nov 2022 20:07:05 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Colin Ian King <colin.i.king@...il.com>
Cc:     "Rafael J . Wysocki" <rafael@...nel.org>, linux-pm@...r.kernel.org,
        kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] cpufreq: longhaul: Make array speeds static const

On 03-11-22, 13:21, Colin Ian King wrote:
> Don't populate the read-only array speeds on the stack but instead
> make it static. Also makes the object code a little smaller.

How will that benefit ? I am just looking for a valid answer in commit log.

> Signed-off-by: Colin Ian King <colin.i.king@...il.com>
> ---
>  drivers/cpufreq/longhaul.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/cpufreq/longhaul.c b/drivers/cpufreq/longhaul.c
> index 3e000e1a75c6..25f8ef7bac47 100644
> --- a/drivers/cpufreq/longhaul.c
> +++ b/drivers/cpufreq/longhaul.c
> @@ -407,7 +407,7 @@ static int guess_fsb(int mult)
>  {
>  	int speed = cpu_khz / 1000;
>  	int i;
> -	int speeds[] = { 666, 1000, 1333, 2000 };
> +	static const int speeds[] = { 666, 1000, 1333, 2000 };

Why not make it global then ?

-- 
viresh