linux-kernel - Re: [PATCH] debugfs: add helper function to create device related seq

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Date:	Sun, 12 Oct 2014 10:13:35 +0200
From:	Arend van Spriel <arend@...adcom.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] debugfs: add helper function to create device related
 seq_file

On 11-10-14 22:17, Greg Kroah-Hartman wrote:
> On Sat, Oct 11, 2014 at 06:01:55PM +0200, Arend van Spriel wrote:
>> This patch adds a helper function that simplifies adding a
>> sequence file for device drivers. The calling device driver
>> needs to provide a read function and a device pointer. The
>> field struct seq_file::private will reference the device
>> pointer upon call to the read function so the driver can
>> obtain his data from it and do its seq_printf() calls.
>>
>> Signed-off-by: Arend van Spriel <arend@...adcom.com>
>> ---
>>  fs/debugfs/file.c       | 54 +++++++++++++++++++++++++++++++++++++++++++++++++
>>  include/linux/debugfs.h | 16 ++++++++++++++-
>>  2 files changed, 69 insertions(+), 1 deletion(-)
> 
> Do you have some kernel code pending that needs this change?  Or can
> existing users be moved to it, saving them code?

Yes and maybe. I made a similar change in our brcm80211 drivers, but
figured it may be useful for other device drivers. So when this gets in
the kernel I want to align the brcm80211 drivers. I will also have a
quick look at the wireless drivers and get some metrics about code savings.

Regards,
Arend
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