Jason Low 9bd721c55c sched/balancing: Consider max cost of idle balance per sched domain ... In this patch, we keep track of the max cost we spend doing idle load balancing for each sched domain. If the avg time the CPU remains idle is less then the time we have already spent on idle balancing + the max cost of idle balancing in the sched domain, then we don't continue to attempt the balance. We also keep a per rq variable, max_idle_balance_cost, which keeps track of the max time spent on newidle load balances throughout all its domains so that we can determine the avg_idle's max value. By using the max, we avoid overrunning the average. This further reduces the chance we attempt balancing when the CPU is not idle for longer than the cost to balance. Signed-off-by: Jason Low <jason.low2@hp.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1379096813-3032-3-git-send-email-jason.low2@hp.com Signed-off-by: Ingo Molnar <mingo@kernel.org>		2013-09-20 12:03:44 +02:00
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asm	sched/balancing: Consider max cost of idle balance per sched domain	2013-09-20 12:03:44 +02:00
uapi/asm	metag: add exported <asm/ech.h> for extended context handling	2013-03-27 14:37:53 +00:00