sched: change nr_context_switches calculation.
This patch changes the calculation of nr_context_switches. The variable
"nr_switches" is now used to account for the number of transition to the
idle task, or stop task. It is removed from the schedule() path.
The total calculation can be made using the fact that the transitions to
fair and rt classes are recorded in the root_task_group. One can easily
derive the total figure by adding those quantities together.
Signed-off-by: Glauber Costa <glommer@openvz.org>
CC: Peter Zijlstra <a.p.zijlstra@chello.nl>
CC: Paul Turner <pjt@google.com>
3 files changed
