Re: [PATCH] spi: expose spi_master and spi_device statistics via sysfs

[Jakub Kiciński <moorray3@xxxxx>]

On Thu, 18 Jun 2015 14:49:18 +0100, Mark Brown wrote:
> On Thu, Jun 18, 2015 at 02:54:35PM +0200, Martin Sperl wrote:
> 
> > Now that I am back here some examples from /sys which contain multiple values:
> > /sys/devices/platform/soc/20980000.usb/pools:
> 
> The fact that other people have broken the ABI doesn't mean it's a good
> idea to introduce further ABI breakage.

How about putting this file in debugfs after all?  Mark suggested it
initially but the conversation went in other direction.  Martin said
that his main purpose is to help *debugging* performance of RPi dma,
so it's a perfect candidate for debugfs.  I can't in my mind see any
use for this information on a production system to be honest...
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