This patch series moves the timekeeping and irq enabling from the platform code to the core cpuidle driver. Also, the platform irq disabling was removed as it appears that all calls into cpuidle_call_idle will have already called local_irq_disable().
To save reviewers time, only a few platforms which required the most changes are included in this version. If these changes are approved, the next version will include the remaining platform code which should require minimal changes.
For those who have followed the previous patch versions, as you know, the previous version of this patch series added some helper functionality which used a wrapper function to remove the time keeping and irq enabling/disabling from the platform code. There was also initialization helper functionality which has now been removed from this version. If the basic implementation in this version is approved, then a separate patch submission effort can be made to focus on consolidation of initialziation functionality.
Based on 3.3-rc1
v3 submission can be found here: http://www.spinics.net/lists/arm-kernel/msg156751.html Changes since v3: * Removed drivers/cpuidle/common.c ** Removed the initialization helper functions ** Removed the wrapper used to consolidate time keeping and irq enable/disable * Add time keeping and local_irq_disable handling in cpuidle_call_idle(). * Made necessary modifications to a few platforms that required the most changes ** Note on omap3: changed structure of omap3_idle_drvdata and added per_next_state and per_saved_state vars to accomodate new framework.
v2 submission can be found here: http://comments.gmane.org/gmane.linux.ports.arm.kernel/144199
Changes since v2: * Made various code organization and style changes as suggested in v1 review. * Removed at91 use of common code. A separate effort is underway to clean at91 code and the author has offered to convert to common interface as part of those changes (if this common interface is accepted in time). * Made platform cpuidle_driver objects __initdata and dynamically added one persistent instance of this object in common code. * Removed imx5 pm usage of gpc_dvfs clock as it is no longer needed after being enabled during clock initialization. * Re-organized patches.
v1 submission can be found here: http://comments.gmane.org/gmane.linux.ports.arm.kernel/142791
Changes since v1: * Common interface moved to drivers/cpuidle and made non arch-specific. * Made various fixes and suggested additions to the common cpuidle code from v1 review. * Added callback for filling in driver_data field as needed. * Modified the various platforms with these changes.
Robert Lee (4): cpuidle: Add time keeping and irq enabling ARM: omap: Remove cpuidle timekeeping and irq enable/disable acpi: Remove cpuidle timekeeping and irq enable/disable x86: Remove cpuidle timekeeping and irq enable/disable
arch/arm/mach-omap2/cpuidle34xx.c | 96 ++++++++---------- drivers/acpi/processor_idle.c | 203 ++++++++++++++++++++++--------------- drivers/cpuidle/cpuidle.c | 75 +++++++++++--- drivers/idle/intel_idle.c | 110 ++++++++++++++------ include/linux/cpuidle.h | 26 +++-- 5 files changed, 317 insertions(+), 193 deletions(-)