kernel-ark/arch/powerpc/platforms/pasemi
Olof Johansson 8b32bc0325 [POWERPC] pasemi: Don't enter powersaving states from elevated astates
When the PWRficient cpus are entered into powersavings states, the
astate is automatically dropped down to 0. While we still restore it
when we come out of idle, it can still cause some weird effects with
respect to performance (especially since it takes a while to ramp up to
higher astates).

So, to avoid this, don't enter power savings when the cpufreq driver
(or user) has set higher astates than 0.

The restore is still required, since there's a chance the astate has
been raised from the other cpu while the idling one was asleep.

Signed-off-by: Olof Johansson <olof@lixom.net>
2007-12-01 13:03:40 -06:00
..
cpufreq.c [POWERPC] pasemi: Don't enter powersaving states from elevated astates 2007-12-01 13:03:40 -06:00
electra_ide.c [POWERPC] pasemi: Electra IDE/pata_platform glue 2007-06-25 16:58:05 +10:00
gpio_mdio.c [POWERPC] pasemi: Broaden specific references to 1682M 2007-11-29 22:30:47 -06:00
idle.c [POWERPC] pasemi: Move pasemi_idle_init() to late_initcall() 2007-09-14 01:33:22 +10:00
iommu.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2007-10-11 21:55:47 -07:00
Kconfig [POWERPC] pasemi: Broaden specific references to 1682M 2007-11-29 22:30:47 -06:00
Makefile [POWERPC] pasemi: Electra IDE/pata_platform glue 2007-06-25 16:58:05 +10:00
pasemi.h [POWERPC] pasemi: Don't enter powersaving states from elevated astates 2007-12-01 13:03:40 -06:00
pci.c [POWERPC] pasemi: Add workaround for erratum 5945 2007-09-14 01:33:21 +10:00
powersave.S [POWERPC] pasemi: Don't enter powersaving states from elevated astates 2007-12-01 13:03:40 -06:00
setup.c [POWERPC] pasemi: Broaden specific references to 1682M 2007-11-29 22:30:47 -06:00
time.c