[PATCH] Boottime: A tool for automatic measurement of kernel/bootloader boot time

[Arnd Bergmann]

On Friday 12 October 2012, Russell King - ARM Linux wrote:
> > root at ME:/ cat /sys/kernel/debug/boottime/bootgraph
> > [    0.185254] calling  splash+0x0/0x0
> > [    2.984335] initcall splash+0x0/0x0 returned 0 after 2799 msecs.
> > [    2.984335] calling  autoboot_delay+0x0/0x0
> > [    4.089513] initcall autoboot_delay+0x0/0x0 returned 0 after 1105 msecs.
> > [    4.089513] calling  load_kernel+0x0/0x0
> > [    4.239174] initcall load_kernel+0x0/0x0 returned 0 after 149 msecs.
> > [    4.239174] calling  boot_kernel+0x0/0x0
> > [    4.276260] initcall boot_kernel+0x0/0x0 returned 0 after 37 msecs.
> > [    4.276260] calling  uncompress_ll_init+0x0/0x0
> > [    4.276260] initcall uncompress_ll_init+0x0/0x0 returned 0 after 0 msecs.
> > [    4.276260] Freeing init memory: 0K
> 
> Umm, what happened to sysfs not becoming procfs v2?  I thought we had
> a fairly strict requirement for "one value per file and not nicely
> formatted" for sysfs?
> 

I was thinking the same thing at first, but then I noticed it's actually
debugfs, which has no such rules.

	Arnd