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Message-ID: <effe3cde7b1f188427c42c476f5a96251d837416.camel@perches.com>
Date: Sun, 31 May 2020 15:11:27 -0700
From: Joe Perches <joe@...ches.com>
To: Christophe JAILLET <christophe.jaillet@...adoo.fr>,
rjw@...ysocki.net, pavel@....cz, len.brown@...el.com,
Dan Carpenter <error27@...il.com>
Cc: linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] kernel: power: swap: mark a function as __init to save
some memory
(adding Dan Carpenter)
On Sun, 2020-05-31 at 23:00 +0200, Christophe JAILLET wrote:
> 'swsusp_header_init()' is only called via 'core_initcall'.
> It can be marked as __init to save a few bytes of memory.
Hey Dan
smatch has a full function calling tree right?
Can smatch find unmarked functions called only by __init
functions so those unmarked functions can be appropriately
marked with __init like the below?
> ---
> kernel/power/swap.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/kernel/power/swap.c b/kernel/power/swap.c
> index ca0fcb5ced71..01e2858b5fe3 100644
> --- a/kernel/power/swap.c
> +++ b/kernel/power/swap.c
> @@ -1590,7 +1590,7 @@ int swsusp_unmark(void)
> }
> #endif
>
> -static int swsusp_header_init(void)
> +static int __init swsusp_header_init(void)
> {
> swsusp_header = (struct swsusp_header*) __get_free_page(GFP_KERNEL);
> if (!swsusp_header)
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