Re: PR/49816 CVS commit: src/libexec/ld.elf_so

[Joerg Sonnenberger <joerg%britannica.bec.de@localhost>]

On Mon, Apr 06, 2015 at 04:10:02PM +0000, YAMAMOTO Takashi wrote:
>  except that:
>  * _rtld_exclusive_exit doesn't use CAS
>  * this code is MI
>  
>  i agree that something like PTHREAD__ATOMIC_IS_MEMBAR
>  would be a nice optimization, though.

So which platform are you worried about that doesn't have TSO and
doesn't implicit membars for CAS? I'm asking because the only reason
those changes should help your problem is if they massively penalize the
operation.

Joerg