[PATCH 00/18] cpuidle: code consolidation

[Daniel Lezcano]

This patchset series provide some code consolidation across the different
cpuidle drivers. It contains two parts, the first one is the removal of
the time keeping flag and the second one, is a common initialization routine.

All the drivers use the en_core_tk_irqen flag, which means it is not necessary
to make the time computation optional. We can remove this flag and assume the
cpuidle framework always manage this operation.

The cpuidle code initialization is duplicated across the different drivers in
the same manner.

The repeating pattern is:

SMP:

cpuidle_register_driver(drv);
for_each_possible_cpu(cpu) {
	dev = per_cpu(cpuidle_device, cpu);
	cpuidle_register_device(dev);
}

UP:

cpuidle_register_driver(drv);
cpuidle_register_device(dev);

As on a UP machine the macro 'for_each_cpu' is a one iteration loop, using the
initialization loop from SMP to UP works.

The patchset does some cleanup for different drivers in order to make the init
code the same. Then it introduces a generic function:

  cpuidle_register(struct cpuidle_driver *drv, struct cpumask *cpumask)

The cpumask is for the coupled idle states.

The drivers are then modified to take into account this new function and
to remove the duplicated code.

The benefit is observable in the diffstat: 332 lines of code removed.

Tested-on: u8500
Tested-on: at91
Tested-on: intel i5
Tested-on: OMAP4

Compiled with and without CPU_IDLE for:
 u8500, at91, davinci, exynos, imx5, imx6, kirkwood, multi_v7 (for calxeda),
 omap2plus, s3c64, tegra1, tegra2, tegra3


Daniel Lezcano (18):
  ARM: OMAP3: remove cpuidle_wrap_enter
  cpuidle: remove en_core_tk_irqen flag
  ARM: ux500: cpuidle: replace for_each_online_cpu by
    for_each_possible_cpu
  ARM: imx: cpuidle: create separate drivers for imx5/imx6
  cpuidle: make a single register function for all
  ARM: ux500: cpuidle: use init/exit common routine
  ARM: at91: cpuidle: use init/exit common routine
  ARM: OMAP3: cpuidle: use init/exit common routine
  ARM: s3c64xx: cpuidle: use init/exit common routine
  ARM: tegra1: cpuidle: use init/exit common routine
  ARM: shmobile: cpuidle: use init/exit common routine
  ARM: OMAP4: cpuidle: use init/exit common routine
  ARM: tegra2: cpuidle: use init/exit common routine
  ARM: tegra3: cpuidle: use init/exit common routine
  ARM: calxeda: cpuidle: use init/exit common routine
  ARM: kirkwood: cpuidle: use init/exit common routine
  ARM: davinci: cpuidle: use init/exit common routine
  ARM: imx: cpuidle: use init/exit common routine

 arch/arm/mach-at91/cpuidle.c                    |   18 +--
 arch/arm/mach-davinci/cpuidle.c                 |   21 +---
 arch/arm/mach-exynos/cpuidle.c                  |    1 -
 arch/arm/mach-imx/Makefile                      |    1 +
 arch/arm/mach-imx/cpuidle-imx5.c                |   40 +++++++
 arch/arm/mach-imx/cpuidle-imx6q.c               |    3 +-
 arch/arm/mach-imx/cpuidle.c                     |   80 -------------
 arch/arm/mach-imx/cpuidle.h                     |   10 +-
 arch/arm/mach-imx/pm-imx5.c                     |   30 +----
 arch/arm/mach-omap2/cpuidle34xx.c               |   49 ++------
 arch/arm/mach-omap2/cpuidle44xx.c               |   23 +---
 arch/arm/mach-s3c64xx/cpuidle.c                 |   15 +--
 arch/arm/mach-shmobile/cpuidle.c                |   11 +-
 arch/arm/mach-shmobile/pm-sh7372.c              |    1 -
 arch/arm/mach-tegra/cpuidle-tegra114.c          |   27 +----
 arch/arm/mach-tegra/cpuidle-tegra20.c           |   34 +-----
 arch/arm/mach-tegra/cpuidle-tegra30.c           |   28 +----
 arch/arm/mach-ux500/cpuidle.c                   |   33 +-----
 arch/powerpc/platforms/pseries/processor_idle.c |    1 -
 arch/sh/kernel/cpu/shmobile/cpuidle.c           |    1 -
 arch/x86/kernel/apm_32.c                        |    1 -
 drivers/acpi/processor_idle.c                   |    1 -
 drivers/cpuidle/cpuidle-calxeda.c               |   53 +--------
 drivers/cpuidle/cpuidle-kirkwood.c              |   18 +--
 drivers/cpuidle/cpuidle.c                       |  137 ++++++++++++++---------
 drivers/idle/intel_idle.c                       |    1 -
 include/linux/cpuidle.h                         |   20 ++--
 27 files changed, 162 insertions(+), 496 deletions(-)
 create mode 100644 arch/arm/mach-imx/cpuidle-imx5.c
 delete mode 100644 arch/arm/mach-imx/cpuidle.c

-- 
1.7.9.5