tree 460e3cf96472e327b48befbb4836c2d40e46f937
parent ad0a3b68114e8f3c25ac0045b45a2838f23e3b3a
author Tim Bird <tim.bird@am.sony.com> 1223590985 -0700
committer Ingo Molnar <mingo@elte.hu> 1223973567 +0200

tracing/fastboot: add better resolution to initcall debug/tracing

Change the time resolution for initcall_debug to microseconds, from
milliseconds.  This is handy to determine which initcalls you want to work
on for faster booting.

One one of my test machines, over 90% of the initcalls are less than a
millisecond and (without this patch) these are all reported as 0 msecs.
Working on the 900 us ones is more important than the 4 us ones.

With 'quiet' on the kernel command line, this adds no significant overhead
to kernel boot time.

Signed-off-by: Tim Bird <tim.bird@am.sony.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>