tree bd8ef7a455b52d219abb382e74c3638cc8db550b
parent fa853a48413c2ca1a5dc6b539bf07cf8e7247f8e
author Arjan van de Ven <arjan@linux.intel.com> 1231610585 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1231628812 -0800

bootgraph: make the bootgraph script show async waiting time

It is useful for diagnosing boot performance to see where async function
calls are waiting on serialization...  this patch adds this
functionality to the bootgraph.pl script.

The waiting time is shown as a half transparent, gray bar through the
block that is waiting.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>