linux-kernel - [patch 0/2] reduce agpgart memory allocation time

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 04 Aug 2008 14:51:17 +0800
From:	Shaohua Li <shaohua.li@...el.com>
To:	lkml <linux-kernel@...r.kernel.org>
Cc:	airlied@...ux.ie, Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arjan van de Ven <arjan@...radead.org>
Subject: [patch 0/2] reduce agpgart memory allocation time

agpgart memory allocation is quite expensive. For each page agpgart
allocated, it changes the page to uc and as result flush tlb/cache for
the page. In my test, Intel Xorg driver takes about 0.2s for a 32M 3D
fb, and the total time for memory allocation is about 0.33s when intel
xorg driver initializes. Below patches fix the gap. It can reduce the
time to 0.03s, so xserver can boot 0.3s faster.

Thanks,
Shaohua

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/