Re: [PATCH v2 0/4] Static calls
From: Pavel Machek
Date: Mon Dec 10 2018 - 18:57:56 EST
> These patches are related to two similar patch sets from Ard and Steve:
> - https://lkml.kernel.org/r/20181005081333.15018-1-ard.biesheuvel@xxxxxxxxxx
> - https://lkml.kernel.org/r/20181006015110.653946300@xxxxxxxxxxx
> The code is also heavily inspired by the jump label code, as some of the
> concepts are very similar.
> There are three separate implementations, depending on what the arch
> 1) CONFIG_HAVE_STATIC_CALL_INLINE: patched call sites - requires
> objtool and a small amount of arch code
> 2) CONFIG_HAVE_STATIC_CALL_OUTLINE: patched trampolines - requires
> a small amount of arch code
> 3) If no arch support, fall back to regular function pointers
Well, it would be nice to mention what these patches do :-).
I guess they are expected to make things slightly faster? If so it
would be nice to mention benchmarks...
(There are even statistics later in the series, but I guess at least
short explanation should be in cover letter).
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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