On Wednesday, August 31, 2011 18:20:54 Andrew Murray wrote: > This patchset introduces the CONFIG_BOOT_TRACE option which provides > support for boot time instrumentation. > > When enabled printf output is prefixed with timing information (similar to > the kernel's CONFIG_PRINTK_TIME option) and additional output is generated > which instruments functions and commands called (much like the kernel's > initcall_debug functionality). > > The kernel's bootgraph.pl script has been ported to render UBoots > instrumented ouptut into a pretty SVG graph. An example of this can be > found here: http://goo.gl/dX8aR - which shows the boot time of a Beagle > board. > > The patch currently provides support for instrumentation of UBoot commands > (e.g. U_BOOT_CMD) for all platforms but only when the HUSH shell is not in > use. Initialisation instrumentation is only limited to the > arch/arm/lib/board.c file at present but can very easily be extended to > other relevant files.
i feel like we've had similar ideas tossed around semi-recently. am i just misremembering ? -mike
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