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Message-ID: <20070222112328.GB10190@muc.de> Date: Thu, 22 Feb 2007 12:23:28 +0100 From: Andi Kleen <ak@....de> To: Ingo Molnar <mingo@...e.hu> Cc: Jeremy Fitzhardinge <jeremy@...p.org>, Arjan van de Ven <arjan@...radead.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Andrew Morton <akpm@...ux-foundation.org>, Linus Torvalds <torvalds@...ux-foundation.org> Subject: Re: [patch] x86: add -freg-struct-return to CFLAGS On Thu, Feb 22, 2007 at 09:38:22AM +0100, Ingo Molnar wrote: > Subject: [patch] x86: add -freg-struct-return to CFLAGS > From: Ingo Molnar <mingo@...e.hu> > > Jeremy Fitzhardinge suggested the use of -freg-struct-return, which does > structure-returns (such as when using pte_t) in registers instead of on > the stack. > > that is indeed so, and this option reduced the kernel size a bit: > > text data bss dec hex filename > 4799506 543456 3760128 9103090 8ae6f2 vmlinux.before > 4798117 543456 3760128 9101701 8ae185 vmlinux.after > > the resulting kernel booted fine on my testbox. Lets go for it. Ok I added it for now. Let's see what happens. I guess people maintaining external Makefiles without Kbuild are in for a nasty surprise again though. Cannot be avoided unfortunately. -Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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