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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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