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Date: Wed, 9 Sep 2009 19:01:10 -0700 (PDT) From: Roland McGrath <roland@...hat.com> To: Andrew Morton <akpm@...ux-foundation.org>, Linus Torvalds <torvalds@...ux-foundation.org> Cc: Jakub Jelinek <jakub@...hat.com>, linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org, x86@...nel.org Subject: [PATCH 2/2] x86: BUG(): use UNREACHABLE() This uses the new UNREACHABLE() macro in x86's BUG() macro. In my test builds, this saved 2022 bytes of text in vmlinux on x86_64, 3051 bytes on i686. (I didn't bother to calculate the additional savings in .ko text.) Signed-off-by: Roland McGrath <roland@...hat.com> CC: Jakub Jelinek <jakub@...hat.com> --- arch/x86/include/asm/bug.h | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/bug.h b/arch/x86/include/asm/bug.h index d9cf1cd..a6458a3 100644 --- a/arch/x86/include/asm/bug.h +++ b/arch/x86/include/asm/bug.h @@ -22,14 +22,14 @@ do { \ ".popsection" \ : : "i" (__FILE__), "i" (__LINE__), \ "i" (sizeof(struct bug_entry))); \ - for (;;) ; \ + UNREACHABLE(); \ } while (0) #else #define BUG() \ do { \ asm volatile("ud2"); \ - for (;;) ; \ + UNREACHABLE(); \ } while (0) #endif -- 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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