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Date: Tue, 26 Aug 2008 11:47:01 -0700 (PDT) From: Linus Torvalds <torvalds@...ux-foundation.org> To: Adrian Bunk <bunk@...nel.org> cc: Rusty Russell <rusty@...tcorp.com.au>, "Alan D. Brunelle" <Alan.Brunelle@...com>, "Rafael J. Wysocki" <rjw@...k.pl>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Kernel Testers List <kernel-testers@...r.kernel.org>, Andrew Morton <akpm@...ux-foundation.org>, Arjan van de Ven <arjan@...ux.intel.com>, Ingo Molnar <mingo@...e.hu>, linux-embedded@...r.kernel.org Subject: Re: [Bug #11342] Linux 2.6.27-rc3: kernel BUG at mm/vmalloc.c - bisected On Tue, 26 Aug 2008, Adrian Bunk wrote: > > I added "-fno-inline-functions-called-once -fno-early-inlining" to > KBUILD_CFLAGS, and (with gcc 4.3) that increased the size of my kernel > image by 2%. Btw, did you check with just "-fno-inline-functions-called-once"? The -fearly-inlining decisions _should_ be mostly right. If gcc sees early that a function is so small (even without any constant propagation etc) that it can be inlined, it's probably right. The inline-functions-called-once thing is what causes even big functions to be inlined, and that's where you find the big downsides too (eg the stack usage). Linus -- 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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