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Re: [PATCH] add self-tuning to x86 hardware fast path in libitm
- From: Nuno Diegues <nmld at ist dot utl dot pt>
- To: gcc-patches at gcc dot gnu dot org
- Cc: Andi Kleen <andi at firstfloor dot org>, Paolo Romano <romano at inesc-id dot pt>
- Date: Thu, 30 Apr 2015 08:10:30 -0400
- Subject: Re: [PATCH] add self-tuning to x86 hardware fast path in libitm
- Authentication-results: sourceware.org; auth=none
- References: <CAALS4mout4o-yVi8WgdL=EKHFLV+o2RSHaicRB7mHraQnQJhwQ at mail dot gmail dot com> <87y4m2ogvi dot fsf at tassilo dot jf dot intel dot com> <CAALS4mrVbO=TNZ7ynteXpayQYeHagODQy97qP0LL0NSy50X2ug at mail dot gmail dot com> <20150408175457 dot GR2366 at two dot firstfloor dot org> <CAALS4mo1hBQjnyi+yHVLfDAzJkw0JG98zPFLRVQ_By59=t7QNw at mail dot gmail dot com> <87iod4npcv dot fsf at tassilo dot jf dot intel dot com> <CAALS4mrr=woMp2Epx87ycjXPupF7h_8hHJK7O=7HZP2ZWiTEwA at mail dot gmail dot com> <87618enteg dot fsf at tassilo dot jf dot intel dot com>
> Patch looks good to me now. It would be perhaps nice to have an
> environment variable to turn the adaptive algorithm off for tests,
> but that's not critical.
Yes, that makes perfect sense.
> It would be also nice to test it on something else, but I understand
> it's difficult to find other software using the STM syntax.
Indeed. I'll try to find some time to work on that, but it may take a while.
> I can't approve the patch however. I believe it's big enough that you
> may need a copy right assignment.
I have signed a Form Assignment from the Free Software Foundation to
deal exactly with those matters for this patch to the libitm. Torvald
Riegel had advised me to do so.
I have not, however, received any further information; so I'm left
wondering if it went through or if it is still hanging. I will ping
back to FSF to check that out perhaps?
Best regards,
-- Nuno Diegues
>
> -Andi
>
> --
> ak@linux.intel.com -- Speaking for myself only