Re: [RFC] sysfs kobject that doesn't trigger hotplug events

[John Zielinski]

Dmitry Torokhov wrote:

> You are wasting 4 bytes for every kobject out there. Just implement your
> private hotplug callback that would return something like -ENODEV so the
> hotplug helper would not be called. If needed you can call 
> kobject_hotplug
> later, when you are ready. 



Actually for every kobj_type structure, not for every kobject.  Doing a 
quick scan through the kernel I found 25 kobj_type decelerations so that 
would add up to 100 bytes only.  And that could be made a byte or flags 
field.

I wasn't sure if it was possible to create a subsystem that wasn't a 
part of the sysfs tree that contained kobjects that were.  Looking 
trough the code again it looks like it is so I'll use the hotplug filter 
as you suggest.

John


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