Re: [PATCH 4/8] determine the existence of private futexes at the first thread creation

[Jens Gustedt <jens.gustedt@inria.fr>]

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Hello Rich,

On Fri, 23 Jun 2017 13:05:35 -0400 Rich Felker <dalias@libc.org> wrote:

> This was intentional, the idea being that a 100% predictable branch in
> a path where a syscall is being made anyway is much less expensive
> than a GOT address load that gets hoisted all the way to the top of
> the function and affects even code paths that don't need to make the
> syscall. Whether it was a choice that makes sense overall, I'm not
> sure, but that was the intent.

So if we can avoid going through GOT, this would be better?
I'd just add ATTR_LIBC_VISIBILITY to the variable, and then this
should go away the same way as it is done for the libc object.


Thanks
Jens

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