]> git.sur5r.net Git - u-boot/commit
ext2load: increase read speed
authoru-boot@lakedaemon.net <u-boot@lakedaemon.net>
Wed, 28 Mar 2012 04:37:11 +0000 (04:37 +0000)
committerWolfgang Denk <wd@denx.de>
Thu, 21 Jun 2012 20:49:33 +0000 (22:49 +0200)
commit436da3cd233e7166b5ce9293dbd28092cf37bcc9
tree847cfa9a6ce8fb20360d0061ea477baf6846a94c
parent669df7e42d460233f39e26d7c27d3c17821f4666
ext2load: increase read speed

This patch dramatically drops the amount of time u-boot needs to read a
file from an ext2 partition.  On a typical 2 to 5 MB file (kernels and
initrds) it goes from tens of seconds to a couple seconds.

All we are doing here is grouping contiguous blocks into one read.

Boot tested on Globalscale Technologies Dreamplug (Kirkwood ARM SoC)
with three different files.  sha1sums were calculated in Linux
userspace, and then confirmed after ext2load.

Signed-off-by: Jason Cooper <u-boot@lakedaemon.net>
Tested-by: Eric Nelson <eric.nelson@boundarydevices.com>
Tested-by: Thierry Reding <thierry.reding@avionic-design.de>
fs/ext2/ext2fs.c