Re: [PATCH] [RFC] sysfs support for xen linux

["Mike D. Day" <ncmike@us.ibm.com>]

On 5:13 AM Keir Fraser wrote:
> xen_sysfs.c looks to contain a lot of code that I would expect to be 
> part of a generic sysfs library. Does every subsystem that uses sysfs 
> really have to implement all that stuff for itself?

No, they don't. Drivers get sysfs attributes by using the driver core 
(registering a subsystem, defining attributes, etc.).

However, if all you want to do is create and remove files under /sys 
(without using all the driver core), there is no simple way to do so (at 
least not that I could find). I am assuming that folks will want 
something that works like /proc does now.

I wrote xen_sysfs.c to provide simple sysfs interfaces for non-drivers. 
It seems as though it would be a crime against nature to write a device 
driver just to create a file under /sys.

> (I am not a sysfs expert, by the way :-) .
Neither am I, but perhaps some such person will give feedback. :-)

Mike

-- 

Mike D. Day
STSM and Architect, Open Virtualization
IBM Linux Technology Center
ncmike@us.ibm.com