On Thu, Oct 30, 2008 at 11:25:02PM -0700, Greg KH wrote:
> Also, this will be returning more than one value per single sysfs file,
> which generally is not allowed. What is to keep you from overrunning
> the buffer passed to the show function?
Nothing -- there can be up to 2048 MSI-X entries and each interrupt
number might reasonably be five bytes ("1234\n"), so we're looking at
a maximum output of around 10k.
> Is there any way you can think of only having one value per file here?
Urgh. I suppose we could create one sysfs file per MSI vector, but see
the "2048" above. It would be nice from a sparse usage point of view, in
that you'd get a file called msix947 that had the contents "190", but this
could cause a _lot_ of files to get created. Are we all OK with this?
--
Matthew Wilcox Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours. We can't possibly take such
a retrograde step."
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