Since commit 46bcfad7a819bd17ac4e831b04405152d59784ab, cpuidle: Single/Global registration of idle states
we have a single registration for the cpuidle states which makes sense. But now two new architectures are coming: tegra3 and big.LITTLE.
These architectures have different cpus with different caracteristics for power saving. High load => powerfull processors, idle => small processors.
That implies different cpu latencies.
This patchset keeps the current behavior as introduced by Deepthi without breaking the drivers and add the possibility to specify a per cpu states.
* Tested on intel core 2 duo T9500 * Tested on vexpress by Lorenzo Pieralsi * Tested on tegra3 by Peter De Schrijver
Daniel Lezcano (6): acpi : move the acpi_idle_driver variable declaration acpi : move cpuidle_device field out of the acpi_processor_power structure acpi : remove pointless cpuidle device state_count init cpuidle : add a pointer for cpuidle_state in the cpuidle_device cpuidle : use per cpuidle device cpu states cpuidle : add cpuidle_register_states function
drivers/acpi/processor_driver.c | 2 +- drivers/acpi/processor_idle.c | 27 +++++++++++++++------- drivers/cpuidle/cpuidle.c | 42 ++++++++++++++++++++++++++++------- drivers/cpuidle/governors/ladder.c | 22 +++++++++--------- drivers/cpuidle/governors/menu.c | 8 +++--- drivers/cpuidle/sysfs.c | 3 +- include/acpi/processor.h | 3 -- include/linux/cpuidle.h | 11 ++++++-- 8 files changed, 76 insertions(+), 42 deletions(-)