4ee471fe5a
Both clang and gcc (for -march=z13 and later) align functions to 16 bytes at -O2 to benefit branch prediction. Make asm symbols alignment consistent with that. This also benefits potential ftrace code patching, which is currently able to patch 8 aligned bytes at once. With defconfig this currently increases .text size by 4104 bytes. Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
29 lines
722 B
C
29 lines
722 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_LINKAGE_H
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#define __ASM_LINKAGE_H
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#include <asm/asm-const.h>
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#include <linux/stringify.h>
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#define __ALIGN .align 16, 0x07
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#define __ALIGN_STR __stringify(__ALIGN)
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/*
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* Helper macro for exception table entries
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*/
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#define __EX_TABLE(_section, _fault, _target) \
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stringify_in_c(.section _section,"a";) \
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stringify_in_c(.align 8;) \
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stringify_in_c(.long (_fault) - .;) \
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stringify_in_c(.long (_target) - .;) \
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stringify_in_c(.quad 0;) \
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stringify_in_c(.previous)
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#define EX_TABLE(_fault, _target) \
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__EX_TABLE(__ex_table, _fault, _target)
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#define EX_TABLE_DMA(_fault, _target) \
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__EX_TABLE(.dma.ex_table, _fault, _target)
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#endif
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