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
| ||
|
Date: Wed, 16 Aug 2017 21:17:45 -0400 (EDT) From: Nicolas Pitre <nicolas.pitre@...aro.org> To: Chris Brandt <Chris.Brandt@...esas.com> cc: Alexander Viro <viro@...iv.linux.org.uk>, "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>, "linux-embedded@...r.kernel.org" <linux-embedded@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: RE: [PATCH 0/5] cramfs refresh for embedded usage On Wed, 16 Aug 2017, Chris Brandt wrote: > I made an example once were all the graphics were RAW and uncompressed > and marked as XIP in AXFS. The result was a large saving of RAM because > as the graphics framework (DirectFB) would copy directly from Flash > whenever it needed to do a background erase or image re-draw (button press > animations). > > Same went for playing MP3 files. The MP3 files were XIP in flash, so > mpg123 pulled from flash directly. I wouldn't have expected mpg123 to mmap() its input files though. If you use read() and not mmap() then you don't get the full benefit. Nicolas
Powered by blists - more mailing lists