From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keith Packard Subject: Re: [PATCH] [RFC] drm/i915: read-read semaphore optimization Date: Tue, 13 Dec 2011 08:36:16 -0800 Message-ID: <86k460ig3j.fsf@sumi.keithp.com> References: <1323748328-10153-1-git-send-email-ben@bwidawsk.net> <20111213160133.GA4125@phenom.ffwll.local> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0691625640==" Return-path: Received: from keithp.com (home.keithp.com [63.227.221.253]) by gabe.freedesktop.org (Postfix) with ESMTP id 4AC559EEFC for ; Tue, 13 Dec 2011 08:35:32 -0800 (PST) In-Reply-To: <20111213160133.GA4125@phenom.ffwll.local> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org To: Daniel Vetter , Chris Wilson Cc: Daniel Vetter , Ben Widawsky , intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org --===============0691625640== Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha256; protocol="application/pgp-signature" --=-=-= Content-Transfer-Encoding: quoted-printable On Tue, 13 Dec 2011 17:01:33 +0100, Daniel Vetter wrote: > - or remove it all and invalidate/flush unconditionally. Eric and I were chatting yesterday about trying this -- it seems like we'd be able to dramatically simplify the kernel module by doing this, and given how much flushing already occurs, I doubt we'd see any significant performance difference, and we'd save a pile of CPU time, which might actually improve performance. =2D-=20 keith.packard@intel.com --=-=-= Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIVAwUBTud/ADYtFsjWk68qAQgIcQ/7B8nsFboPlwhayHvSECDr0oKEl2ChEpH9 jNzpwm7rePVSHm/5yQxJ0sdpqOklod4xVBQ4JPIfDZQtar1Pfk2h5CjgsRuHww40 l+7ocJPfneB5rWNJCLFiTXZ4H7j69Wj/0Tdq4JidTX8pksiBxQ9x7o/kBBzeR67w f7V80oSRq2HugMjLX0n4j5qrJVtkvZqr+2SCsBHBocW3mKWoWW0JksCNQOp9em9P 0Mg8LpxsS1xkr0FPmAnmM/Nj4dqZV7+ZFz5ABRptgogdtCR+BvfKV73QUKbER4AJ UTyodSuSa/3x+7qK2BizpHG1PDcCyGMYPqYHQi6N+3R753elYn6kzql9wq9B3uKY IA69pExA2yYtmpPVQwIZhqtWw8d8l//48n//7mX3MUvar7cuPOKqAm1WCBf0cqmR Q4W0bKiN06eheMu8g67WoD/dPb2RdaxC/pcr0y836mTsL+AkCPllQFZfzKM/dilg ZB06i/rt58ERYRcCtFQt/1OlcyweJ+aOTmWVjHZzcGH9lJ5VDx0HTq9fjIRIgwDk Ru7XJBSvAZEQPMiJV+MyMTZ/8pNPCdU4vqvbt4122c5tgQHQUVNQ6+z/TRSz2rHj fnKLHE5/NMKvcznBovaZX8ODLGlH/uOZOy1akrwmDpDAZ3qbXGHVcxiVXAfdF87v XLnDpOdhkvI= =VLoO -----END PGP SIGNATURE----- --=-=-=-- --===============0691625640== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx --===============0691625640==--