On Thursday, July 3, 2003, at 10:28 AM, Nate Lawson wrote:
I personally think that all tunable should be read-only (or rw if possible) sysctls...
I'm still not sure why we have both mechanisms. Perhaps a useful approach
would be to sweep the tree for tunables and change them to sysctls with
appropriate permissions (read-only if in doubt). Then remove the tunable
mechanism. Care to put together a patch?
No.
The two are different things, although arguably there should be more integration.
The tunable mechanism exists to allow parameters to be set before the kernel starts.
Things that are set with tunables tend to be things that used to be statically compiled
into the kernel; they're not adjustable once the kernel's up and running.
It makes sense to export the values set by tunables into the sysctl MIB, but by their
very nature they're not suitable for conversion to sysctls.
= Mike
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