From: Aaron Williams <Aaron.Williams@caviumnetworks.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] fdt performance
Date: Wed, 16 Oct 2013 23:24:04 -0700 [thread overview]
Message-ID: <525F8284.4000304@caviumnetworks.com> (raw)
Hi all,
In our bootloader based off of 2013.07 we make extensive use of the flat
device tree. In profiling our bootloader in our simulator I found that
the function eating up the most time is fdt_next_tag. Looking at it,
especially fdt_offset_ptr, it looks like there is a lot of room for
improvement especially in the skip name section.
Some of the checks in fdt_offset_ptr also look useless, such as if
((offset + len) < offset) which will always be false, or
if (p + len < p)
len is always positive.
-Aaron
--
Aaron Williams
Software Engineer
Cavium, Inc.
(408) 943-7198 (510) 789-8988 (cell)
next reply other threads:[~2013-10-17 6:24 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-17 6:24 Aaron Williams [this message]
2013-10-17 9:48 ` [U-Boot] fdt performance Albert ARIBAUD
2013-10-17 18:55 ` Wolfgang Denk
2013-10-17 19:04 ` Andre Renaud
2013-10-18 20:11 ` Wolfgang Denk
2013-10-20 18:18 ` Michael Pratt
2013-10-21 19:55 ` Wolfgang Denk
2013-10-22 20:43 ` Michael Pratt
2013-10-23 4:13 ` Wolfgang Denk
2013-10-17 22:27 ` Simon Glass
2013-11-14 23:36 ` Scott Wood
2013-11-14 23:52 ` Simon Glass
2014-01-14 6:13 ` Aaron Williams
2014-01-26 16:56 ` Simon Glass
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