Arjan van de Ven 0224cf4c5e sched: Intoduce get_cpu_iowait_time_us()
For the ondemand cpufreq governor, it is desired that the iowait
time is microaccounted in a similar way as idle time is.

This patch introduces the infrastructure to account and expose
this information via the get_cpu_iowait_time_us() function.

[akpm@linux-foundation.org: fix CONFIG_NO_HZ=n build]
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Rik van Riel <riel@redhat.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: davej@redhat.com
LKML-Reference: <20100509082523.284feab6@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-05-09 19:35:27 +02:00
..
2010-03-24 16:31:19 -07:00
2010-05-06 18:49:20 +02:00
2010-04-15 09:36:16 +02:00
2009-12-14 23:55:34 +01:00
2010-02-10 17:47:17 -08:00
2010-03-06 11:26:32 -08:00
2010-04-02 20:12:05 +02:00
2010-03-06 11:26:33 -08:00
2010-03-12 15:52:32 -08:00
2010-04-24 11:31:24 -07:00
2010-03-12 15:53:10 -08:00
2010-03-06 11:26:23 -08:00
2010-04-02 20:12:00 +02:00