Re: [PATCH -mm] x86 boot : export boot_params via sysfs (forward to Greg)

On Wed, Dec 12, 2007 at 09:45:07AM -0800, Greg Kroah-Hartman wrote:

Well, I respectively disagree. sysfs is NOT for exporting various
binary kernel structures to userspace directly. Again, the binary files
in sysfs are for chunks of memory that are PASS-THROUGH from hardware to
userspace, with no kernel intervention at all.
If you really need such a thing, use debugfs, as the only rule for
debugfs is that there is no rules :)

Whilst on the subject, why wasn't /sys/slab done in debugfs ?
The one-value-per-file thing has gone taken to ridiculous extremes there.

Having 3641 sysfs files that most people never use permanently taking up
memory seems to be a massive waste of resources.

Nearly a third of all the sysfs files I have on my system belong to that
subtree, which is just.. wow.

Dave

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