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SubjectRe: [PATCH] Remove CONFIG_PM altogether, enable power management all the time
On Tue, Feb 08, 2011 at 03:35:29PM -0800, Frank Rowand wrote:

> For 2.6.38-rc4, x86_64, CONFIG_NR_CPUS=4:

> size vmlinux
> text data bss dec hex filename
>
> 6553910 3555020 9994240 20103170 132c002 vmlinux with CONFIG_PM
> 6512652 3553116 9994240 20060008 1321768 vmlinux without CONFIG_PM
>
> 41258 1904 0 43162 delta

> That is big enough for me to care.

Hrm, that's pretty surprising. It'd be interesting to know how much of
that is due to the PM core itself and how much of that is from drivers.
For the drivers CONFIG_PM isn't really the option they should be using
in the first place - they mostly want some combination of PM_SLEEP and
PM_RUNTIME for the specific functionality. I'm running some checks now.

> > CONFIG_PM_SLEEP=y

Raphael's patch will make this a user visible option in place of raw
CONFIG_PM by default so you'd be able to turn that off.


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