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author | Heiko Carstens <hca@linux.ibm.com> | 2023-10-06 16:42:42 +0300 |
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committer | Vasily Gorbik <gor@linux.ibm.com> | 2023-10-16 14:04:09 +0300 |
commit | 802ba53eefc592a6a82231f74e19bafe3256f172 (patch) | |
tree | 2c9fa712b9d5c17f8a83a7800c64c471534dd143 /arch/s390/include/asm/asm-extable.h | |
parent | 76292d7243f809486ec26dd6cd3436dbcb9e5319 (diff) | |
download | linux-802ba53eefc592a6a82231f74e19bafe3256f172.tar.xz |
s390: add support for DCACHE_WORD_ACCESS
Implement load_unaligned_zeropad() and enable DCACHE_WORD_ACCESS to
speed up string operations in fs/dcache.c and fs/namei.c.
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/asm-extable.h')
-rw-r--r-- | arch/s390/include/asm/asm-extable.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/s390/include/asm/asm-extable.h b/arch/s390/include/asm/asm-extable.h index d1ecc2b6e5d3..4a6b0a8b6412 100644 --- a/arch/s390/include/asm/asm-extable.h +++ b/arch/s390/include/asm/asm-extable.h @@ -13,6 +13,7 @@ #define EX_TYPE_UA_LOAD_MEM 4 #define EX_TYPE_UA_LOAD_REG 5 #define EX_TYPE_UA_LOAD_REGPAIR 6 +#define EX_TYPE_ZEROPAD 7 #define EX_DATA_REG_ERR_SHIFT 0 #define EX_DATA_REG_ERR GENMASK(3, 0) @@ -80,4 +81,7 @@ #define EX_TABLE_UA_LOAD_REGPAIR(_fault, _target, _regerr, _regzero) \ __EX_TABLE(__ex_table, _fault, _target, EX_TYPE_UA_LOAD_REGPAIR, _regerr, _regzero, 0) +#define EX_TABLE_ZEROPAD(_fault, _target, _regdata, _regaddr) \ + __EX_TABLE(__ex_table, _fault, _target, EX_TYPE_ZEROPAD, _regdata, _regaddr, 0) + #endif /* __ASM_EXTABLE_H */ |