[PATCH] x86: Add thresholds for "rep movsb/stosb" to tunables

Carlos O'Donell carlos@redhat.com
Mon Jun 1 19:38:34 GMT 2020

On Mon, Jun 1, 2020 at 3:33 PM H.J. Lu <hjl.tools@gmail.com> wrote:
> Did you mean adding  --list-tunables to ld.so?  libc.so.6 doesn't take
> any arguments.

Yes, I mean adding argument processing to libc.so.6, and handling

We have enough infrastructure in place that wiring that up shouldn't be too bad?

Then, even in trimmed down containers, you can just run
/lib64/libc.so.6 --list-tunables and get back the list of tunables and
their min, max, and security values.

The alternative is a glibc-tunables binary which does only this, but
that seems like waste.


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