From 3944a9274ef6cda0cc282daf0739832f661670f7 Mon Sep 17 00:00:00 2001
From: Ben Segall <bsegall@google.com>
Date: Thu, 15 May 2014 15:59:20 -0700
Subject: [PATCH] sched: Fix exec_start/task_hot on migrated tasks

task_hot checks exec_start on any runnable task, but if it has been
migrated since the it last ran, then exec_start is a clock_task from
another cpu. If the old cpu's clock_task was sufficiently far ahead of
this cpu's then the task will not be considered for another migration
until it has run. Instead reset exec_start whenever a task is migrated,
since it is presumably no longer hot anyway.

Signed-off-by: Ben Segall <bsegall@google.com>
[ Made it compile. ]
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/20140515225920.7179.13924.stgit@sword-of-the-dawn.mtv.corp.google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
Reading git-format-patch failed