linux-kernel - Re: [PATCH v2 2/4] mmc: Export internal host state through debugfs

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Message-ID: <20080704194556.73061a08@mjolnir.drzeus.cx>
Date:	Fri, 4 Jul 2008 19:45:56 +0200
From:	Pierre Ossman <drzeus-list@...eus.cx>
To:	Haavard Skinnemoen <haavard.skinnemoen@...el.com>
Cc:	linux-kernel@...r.kernel.org,
	Haavard Skinnemoen <haavard.skinnemoen@...el.com>
Subject: Re: [PATCH v2 2/4] mmc: Export internal host state through debugfs

On Tue,  1 Jul 2008 15:14:52 +0200
Haavard Skinnemoen <haavard.skinnemoen@...el.com> wrote:

> When CONFIG_DEBUG_FS is set, create a few files under /sys/kernel/debug
> containing information about an mmc host's internal state. Currently,
> just a single file is created, "ios", which contains information about
> the current operating parameters for the bus (clock speed, bus width,
> etc.)
> 
> Host drivers can add additional files and directories under the host's
> root directory by passing the debugfs_root field in struct mmc_host as
> the 'parent' parameter to debugfs_create_*.
> 
> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@...el.com>
> 

I see that this version has no ifdef:s at all. Doesn't that mean a lot
of useless code if DEBUG_FS is not enabled? You embedded guys are
usually rather sensitive about such things. :)

-- 
     -- Pierre Ossman

  Linux kernel, MMC maintainer        http://www.kernel.org
  rdesktop, core developer          http://www.rdesktop.org

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