linux-kernel - Re: [PATCH v2] char drivers: Ram oops/panic logger

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Date:	Wed, 10 Mar 2010 18:20:33 +0900
From:	Yuasa Yoichi <yuasa@...ux-mips.org>
To:	Marco Stornelli <marco.stornelli@...il.com>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>,
	Linux Embedded <linux-embedded@...r.kernel.org>
Subject: Re: [PATCH v2] char drivers: Ram oops/panic logger

2010/3/10 Marco Stornelli <marco.stornelli@...il.com>:
> 2010/3/10 Yuasa Yoichi <yuasa@...ux-mips.org>:
>> Hi,
>>
>> 2010/3/10 Marco Stornelli <marco.stornelli@...il.com>:
>>> Ramoops, like mtdoops, can log oops/panic information but in RAM.
>>
>> What is different from mtdoops + mtd-ram?
>>
>> Yoichi
>>
>
> It can be used in a very easy way with persistent RAM for systems
> without flash support. For this systems, with this driver, it's no
> more needed add to the kernel the mtd subsystem with advantage in
> footprint as I said in the description.

right.
But,

> In addition, you can save
> flash space and store this information only in RAM. I think it's very
> useful for embedded systems.

CONFIG_MTD_RAM uses only RAM.
I think there's no big difference about this point.

Yoichi
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