Corrado Zoccolo 672917dcc7 cpuidle: menu governor: reduce latency on exit ... Move the state residency accounting and statistics computation off the hot exit path. On exit, the need to recompute statistics is recorded, and new statistics will be computed when menu_select is called again. The expected effect is to reduce processor wakeup latency from sleep (C-states). We are speaking of few hundreds of cycles reduction out of a several microseconds latency (determined by the hardware transition), so it is difficult to measure. Signed-off-by: Corrado Zoccolo <czoccolo@gmail.com> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Len Brown <len.brown@intel.com> Cc: Adam Belay <abelay@novell.com Acked-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2009-09-22 07:17:45 -07:00
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governors	cpuidle: menu governor: reduce latency on exit	2009-09-22 07:17:45 -07:00
cpuidle.c	tracing, x86, cpuidle: Move the end point of a C state in the power tracer	2009-09-19 18:57:52 +02:00
cpuidle.h
driver.c
governor.c
Kconfig
Makefile
sysfs.c