On 5/20/07, Pierre Ossman <[email protected]> wrote:
I'm reworking the sysfs stuff in the MMC layer to be a bit more flexible, but
there is one thing that has me baffled; how do you add attributes to an object
in a race free manner when you have a dynamic set of attributes.
I've looked at other parts of the kernel and they all use:
1. Add object.
2. Add attributes.
To me, it seems like there's a window between 1 and 2 where the object is in
/sys but doesn't have the proper attributes. Life for user space gets very
annoying if it has to add artificial delays to avoid this window.
So how do I do this properly? Something like this would, from my point of view,
be the sane method:
1. Add hidden object.
2. Add attributes.
3. Show object.
Do you have a fixed set of attribute names, where you just want to
create a subset from that matches the individual device, or do you
need some sort of free naming for the attributes?
Kay
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