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    Subject[PATCH 0/5] Re: Remove CONFIG_PM altogether, enable power management all the time
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    On Tuesday, February 08, 2011, Ingo Molnar wrote:
    >
    > * Rafael J. Wysocki <rjw@sisk.pl> wrote:
    >
    > > I'd appreciate it if people could review/test it and drop their comments.
    > >
    > > Thanks,
    > > Rafael
    > >
    > > ---
    > > arch/x86/xen/Kconfig | 2 +-
    > > drivers/acpi/Kconfig | 1 -
    > > drivers/acpi/bus.c | 4 +---
    > > drivers/acpi/internal.h | 6 ++++++
    > > drivers/acpi/sleep.c | 13 +++++++++++--
    > > drivers/base/power/Makefile | 3 +--
    > > drivers/net/e1000e/netdev.c | 8 ++++----
    > > drivers/net/pch_gbe/pch_gbe_main.c | 2 +-
    > > drivers/pci/pci-driver.c | 4 ++--
    > > drivers/scsi/Makefile | 2 +-
    > > drivers/scsi/scsi_priv.h | 2 +-
    > > drivers/scsi/scsi_sysfs.c | 2 +-
    > > drivers/usb/core/hcd-pci.c | 4 ++--
    > > include/acpi/acpi_bus.h | 2 +-
    > > include/linux/pm.h | 2 +-
    > > kernel/power/Kconfig | 29 +++--------------------------
    > > 16 files changed, 37 insertions(+), 49 deletions(-)
    >
    > Ok, there's some real bang for bucks in this patch, nice! It's a beginning.
    >
    > Reviewed-by: Ingo Molnar <mingo@elte.hu>

    In the meantime I've split it into a series of patches that should make it a
    bit easier to diagnose problems, if there are any. I'll post those patches
    in replies to this message:

    [1/5] - Deal with dependencies on CONFIG_PM in ACPI
    [2/5] - Redefine CONFIG_PM as (CONFIG_PM_SLEEP || CONFIG_PM_RUNTIME)
    [3/5] - Reorder options in kernel/power/Kconfig
    [4/5] - Replace CONFIG_PM_OPS with CONFIG_PM
    [5/5] - Clean up dependencies in kernel/power/Kconfig

    > Also, i've Cc:-ed Linus, to check whether the idea to make power management a
    > permanent, core portion of Linux has any obvious downsides we missed.
    >
    > Rafael, could you do a defconfig-ish x86 build with and without CONFIG_PM, and post
    > the 'size vmlinux' comparison - so that we can see the size difference? We make some
    > things CONFIG_EXPERT configurable just to enable folks who *really* want to cut down
    > on kernel size to configure it out.

    Sure, I will.

    Thanks,
    Rafael


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