Messages in this thread | | | Date | Wed, 9 Feb 2011 11:58:37 +0000 | From | Mark Brown <> | Subject | Re: [PATCH] Remove CONFIG_PM altogether, enable power management all the time |
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On Wed, Feb 09, 2011 at 11:41:37AM +0000, Mark Brown wrote:
> 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.
OK, on ARM with slightly more than an allnoconfig (allnoconfig itself wouldn't build) I see:
text data bss dec hex filename 1361476 71360 167320 1600156 186a9c vmlinux.nopm 1364228 71520 167480 1603228 18769c vmlinux
2752 160 160 3072
so 3K from CONFIG_PM there, mostly from the ARM VIC management code which I suspect really wants to be under one of the more specific PM options, though obviously this comes back to the issue with bitrotted ifdefs for PM whcih pervades the kernel.
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