linux-kernel - Re: [PATCH 2/6] pstore/ram: Add console messages handling

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Message-ID: <CAMbhsRQVchQdnRTteriPqq7DZ68oROrWQr8eLjRtXGZ5q4_MrA@mail.gmail.com>
Date:	Thu, 17 May 2012 11:28:22 -0700
From:	Colin Cross <ccross@...roid.com>
To:	Anton Vorontsov <anton.vorontsov@...aro.org>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Kees Cook <keescook@...omium.org>,
	Tony Luck <tony.luck@...el.com>, Arnd Bergmann <arnd@...db.de>,
	John Stultz <john.stultz@...aro.org>,
	Shuah Khan <shuahkhan@...il.com>, arve@...roid.com,
	Rebecca Schultz Zavin <rebecca@...roid.com>,
	Jesper Juhl <jj@...osbits.net>,
	Randy Dunlap <rdunlap@...otime.net>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Thomas Meyer <thomas@...3r.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Marco Stornelli <marco.stornelli@...il.com>,
	WANG Cong <xiyou.wangcong@...il.com>,
	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org,
	linaro-kernel@...ts.linaro.org, patches@...aro.org,
	kernel-team@...roid.com
Subject: Re: [PATCH 2/6] pstore/ram: Add console messages handling

On Thu, May 17, 2012 at 1:40 AM, Anton Vorontsov
<anton.vorontsov@...aro.org> wrote:
> This is all straightforward: we just use the last region for
> console logging. If there's just one region, we fall-back to
> the old behaviour: just a oops/dumps logging.
>
> Signed-off-by: Anton Vorontsov <anton.vorontsov@...aro.org>

I don't think using the last region is the right way to handle this.
We often use very large regions for ramconsole, up to 2MB.  Using a
single region would require a 2MB region for console and a 2MB region
for oops, which is far too large.
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