linux-kernel - Re: [Patch]Fix reason_str of pstore so that it can work correctly

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Date:	Fri, 16 Mar 2012 10:18:02 +0200
From:	Adrian Hunter <adrian.hunter@...el.com>
To:	Seiji Aguchi <seiji.aguchi@....com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Luck, Tony (tony.luck@...el.com)" <tony.luck@...el.com>,
	"Chen Gong (gong.chen@...ux.intel.com)" <gong.chen@...ux.intel.com>,
	"Matthew Garrett (mjg@...hat.com)" <mjg@...hat.com>,
	"dzickus@...hat.com" <dzickus@...hat.com>,
	"dle-develop@...ts.sourceforge.net" 
	<dle-develop@...ts.sourceforge.net>,
	Satoru Moriya <satoru.moriya@....com>
Subject: Re: [Patch]Fix reason_str of pstore so that it can work correctly

On 07/03/12 23:17, Seiji Aguchi wrote:
> Hi,
> 
> Recently, there has been some changes in kmsg_dump() below.
>  (1) kmsg_dump(KMSG_DUMP_KEXEC) was removed.
>      http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=a3dd3323058d281abd584b15ad4c5b65064d7a61
> 
>  (2) A order of "enum kmsg_dump_reason" was modified.
>      http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=c22ab332902333f83766017478c1ef6607ace681
> 
>  These above patches modified kmsg_dump_reason in include/linux/kmsg_dump.h. 
>  But reason_str in fs/pstore/platform.c was not modified.
> 
>  This patch just fixes reason_str in fs/pstore/platform.c so that pstore can work correctly.
> 
>  Signed-off-by: Seiji Aguchi <seiji.aguchi@....com>
> 
> ---
>  fs/pstore/platform.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index 9ec22d3..81f4748 100644
> --- a/fs/pstore/platform.c
> +++ b/fs/pstore/platform.c
> @@ -69,7 +69,7 @@ void pstore_set_kmsg_bytes(int bytes)
>  static int	oopscount;
>  
>  static char *reason_str[] = {
> -	"Oops", "Panic", "Kexec", "Restart", "Halt", "Poweroff", "Emergency"
> +	"Panic", "Oops", "Emergency", "Restart", "Halt", "Poweroff"
>  };

It would be better to make it so it would not break e.g.

static const char *get_reason_str(enum kmsg_dump_reason reason) {
	switch (reason) {
	KMSG_DUMP_PANIC:
		return "Panic";
	KMSG_DUMP_OOPS:
		return "Oops";
	KMSG_DUMP_EMERG:
		return "Emergency";
	KMSG_DUMP_RESTART:
		return "Restart";
	KMSG_DUMP_HALT:
		return "Halt";
	KMSG_DUMP_POWEROFF:
		return "Poweroff";
	default:
		return "Unknown";
	}
}
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