This is a squash of 2 older commits on kernel/sched.c
commit 099aa69b9cfb6f4c5b56dd1d1d06ce9ef92cf2d5
Author: Steve Muckle <smuckle@codeaurora.org>
Date: Tue Feb 28 14:07:39 2012 -0800
kernel: reduce sleep duration in wait_task_inactive
Sleeping for an entire tick adds unnecessary latency to
hotplugging a cpu (cpu_up).
Change-Id: Iab323a79f4048bc9101ecfd368e0f275827ed4ab
Signed-off-by: Steve Muckle <smuckle@codeaurora.org>
commit 52984e96358c55f89947c6de6e63d70261479f67
Author: Jeff Ohlstein <johlstei@codeaurora.org>
Date: Wed Jun 23 12:59:04 2010 -0700
sched: Extend completion api to allow io_wait time tracking
Adds a function wait_for_completion_io which behaves like
wait_for_completion, except it calls io_schedule instead of
schedule. This indicates that the process waiting on the
completion is waiting on an io event, and keeps statistics
accordingly.
Change-Id: I2514d62ff7f26441782a4cbebc4a18c07bb5ad74
Signed-off-by: Jeff Ohlstein <johlstei@codeaurora.org>
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
452a93234e