Messages in this thread Patch in this message |  | | | Date | Wed, 24 Feb 2010 09:44:51 +0100 | | From | Martin Schwidefsky <> | | Subject | [patch 21/32] [PATCH] bug: use relative pointers in bug table entries |
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From: Heiko Carstens <heiko.carstens@de.ibm.com>
Reduces the size of the bug table entries by 50% on 64bit kernels. Saves around 30kb on a defconfig kernel. s390 version of b93a531e "allow bug table entries to use relative pointers (and use it on x86-64)".
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> --- arch/s390/Kconfig | 3 +++ arch/s390/include/asm/bug.h | 10 ++-------- 2 files changed, 5 insertions(+), 8 deletions(-) Index: quilt-2.6/arch/s390/include/asm/bug.h =================================================================== --- quilt-2.6.orig/arch/s390/include/asm/bug.h 2010-02-24 09:28:13.000000000 +0100 +++ quilt-2.6/arch/s390/include/asm/bug.h 2010-02-24 09:44:27.000000000 +0100 @@ -5,12 +5,6 @@ #ifdef CONFIG_BUG -#ifdef CONFIG_64BIT -#define S390_LONG ".quad" -#else -#define S390_LONG ".long" -#endif - #ifdef CONFIG_DEBUG_BUGVERBOSE #define __EMIT_BUG(x) do { \ @@ -21,7 +15,7 @@ "2: .asciz \""__FILE__"\"\n" \ ".previous\n" \ ".section __bug_table,\"a\"\n" \ - "3:\t" S390_LONG "\t1b,2b\n" \ + "3: .long 1b-3b,2b-3b\n" \ " .short %0,%1\n" \ " .org 3b+%2\n" \ ".previous\n" \ @@ -37,7 +31,7 @@ "0: j 0b+2\n" \ "1:\n" \ ".section __bug_table,\"a\"\n" \ - "2:\t" S390_LONG "\t1b\n" \ + "2: .long 1b-2b\n" \ " .short %0\n" \ " .org 2b+%1\n" \ ".previous\n" \ Index: quilt-2.6/arch/s390/Kconfig =================================================================== --- quilt-2.6.orig/arch/s390/Kconfig 2010-02-24 09:28:13.000000000 +0100 +++ quilt-2.6/arch/s390/Kconfig 2010-02-24 09:44:27.000000000 +0100 @@ -54,6 +54,9 @@ depends on BUG default y +config GENERIC_BUG_RELATIVE_POINTERS + def_bool y + config NO_IOMEM def_bool y
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