[Bug libc/19767] vdso is not used with static linking

[carlos at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=19767

Carlos O'Donell <carlos at redhat dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |carlos at redhat dot com

--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Szabolcs Nagy from comment #0)
> vdso mechanism now uses ifunc dispatch which happens
> too early in the static linking case so the vdso
> mechanism is disabled even though the vdso mechanism
> could easily work with static linking too.
> 
> this means clock_gettime etc calls will go through
> slow syscalls in case of static linking.
> 
> bug 12813 was closed assuming performance does not
> matter of static linking, but i think it does.

I agree that performance matters. We should fix this if we can, but only as
long as it doesn't restrict the dynamically linked implementation.

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