Messages in this thread | | | Date | Tue, 30 Oct 2007 11:42:21 +0000 | From | Ralf Baechle <> | Subject | Re: [PATCH] Only show RESOURCES_64BIT on relevant architectures |
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On Tue, Oct 30, 2007 at 02:37:19AM -0600, Matthew Wilcox wrote:
> On Mon, Oct 29, 2007 at 10:03:16PM -0500, Kumar Gala wrote: > > The same is true on PPC32. Its a per platform thing. However, I'm > > not sure if we could hide it from the user. There are cases on the > > same HW platform that you want to run with just 32-bit phys (for > > performance). > > Have you measured what the performance difference is?
Two identical kernel configs, one with one without CONFIG_RESOURCES_64BIT:
text data bss dec hex filename 3334684 152208 138624 3625516 37522c vmlinux 3340352 152464 138752 3631568 3769d0 vmlinux
So that's 5668, 256 bytes data and 128 bytes of bss for a total of 6052 bytes. Not a whole lot but I still fear some users on the most claustrophobic systems will mind.
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