linux-kernel - Re: [PATCH v2 17/23] kmsg_dumper: Introduce a new 'SOFT' dump reason

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Message-Id: <20101109144749.BC6C.A69D9226@jp.fujitsu.com>
Date:	Tue,  9 Nov 2010 14:49:13 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Mike Waychison <mikew@...gle.com>
Cc:	kosaki.motohiro@...fujitsu.com, simon.kagstrom@...insight.net,
	davem@...emloft.net, nhorman@...driver.com,
	Matt Mackall <mpm@...enic.com>, adurbin@...gle.com,
	linux-kernel@...r.kernel.org, chavey@...gle.com,
	Greg KH <greg@...ah.com>,
	Americo Wang <xiyou.wangcong@...il.com>,
	akpm@...ux-foundation.org, linux-api@...r.kernel.org
Subject: Re: [PATCH v2 17/23] kmsg_dumper: Introduce a new 'SOFT' dump reason

Hi

> It is a useful to be able to exercise kmsg_dumper implementations without
> requiring a kernel oops or panic.  This commit adds a new reason called
> KMSG_DUMP_SOFT, which signifies that the system isn't really going down.
> 
> This logic is used in a later commit that introduces the netoops driver.
> 
> Signed-off-by: Mike Waychison <mikew@...gle.com>
> ---
> 
> It is also possible that we not introduce KMSG_DUMP_SOFT, and simply overload
> the existing KMSG_DUMP_OOPS reason, but I figured that this would be cleaner.
> 
> TODO: Make sure mtdoops and ramoops do something useful with this flag?

Yes. If userland explicitly want to log, we have no reason to refuse it. :)
But, I don't think KMSG_DUMP_SOFT is good name because _SOFT don't explain
anything.



> ---
>  include/linux/kmsg_dump.h |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> diff --git a/include/linux/kmsg_dump.h b/include/linux/kmsg_dump.h
> index a229acc..0abc2d7 100644
> --- a/include/linux/kmsg_dump.h
> +++ b/include/linux/kmsg_dump.h
> @@ -20,6 +20,7 @@ enum kmsg_dump_reason {
>  	KMSG_DUMP_OOPS,
>  	KMSG_DUMP_PANIC,
>  	KMSG_DUMP_KEXEC,
> +	KMSG_DUMP_SOFT,
>  };
>  
>  /**
> 
> --
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