Following patch series ports the cpuidle framework for powernv
platform and also implements a cpuidle back-end powernv
idle driver calling on to power7_nap and snooze idle states.
Moving the idle states over to cpuidle framework can take advantage
of advanced heuristics, tunables and features provided by cpuidle
framework. Additional idle states can be exploited using the cpuidle
framework. The statistics and tracing infrastructure provided by
the cpuidle framework also helps in enabling power management
related tools and help tune the system and applications.
This series aims to maintain compatibility and functionality to
existing powernv idle cpu management code. There are no new functions
or idle states added as part of this series. This can be extended by
adding more states to this existing framework.
With this patch series the powernv cpuidle functionalities
are on-par with pSeries idle management.
For POWERNV platform to hook into CPUIDLE framework, one
needs to enable CONFIG_POWERNV_IDLE and disable
CONFIG_PSERIES_IDLE
Deepthi Dharwar (3):
cpuidle/powernv: cpuidle backend driver for powernv
cpuidle/powernv: Enable idle powernv cpu to call into the cpuidle framework.
cpuidle/powernv: Support smt-snooze-delay parameter in powernv idle.
arch/powerpc/include/asm/processor.h | 2
arch/powerpc/platforms/powernv/Kconfig | 9 +
arch/powerpc/platforms/powernv/Makefile | 1
arch/powerpc/platforms/powernv/powernv.h | 3
arch/powerpc/platforms/powernv/processor_idle.c | 275 +++++++++++++++++++++++
arch/powerpc/platforms/powernv/setup.c | 12 +
6 files changed, 300 insertions(+), 2 deletions(-)
create mode 100644 arch/powerpc/platforms/powernv/processor_idle.c
-- Deepthi
