Hi Aaron, On Thu, Oct 17, 2013 at 12:24 AM, Aaron Williams <aaron.willi...@caviumnetworks.com> wrote: > 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.
Are you using CONFIG_OF_CONTROL? If so, as a higher-level point, we could bring in an efficient DT library, which converts the the FDT into a tree structure for faster parsing. I can point you to a starting point if you like. Regards, Simon > > -Aaron > > -- > Aaron Williams > Software Engineer > Cavium, Inc. > (408) 943-7198 (510) 789-8988 (cell) > > _______________________________________________ > U-Boot mailing list > U-Boot@lists.denx.de > http://lists.denx.de/mailman/listinfo/u-boot _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
