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| author | Bibo Mao <maobibo@loongson.cn> | 2020-05-27 10:25:19 +0800 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2020-05-27 13:06:40 +0200 |
| commit | 44bf431b47b4298d8aaba7b02d0ad29fc609a03c (patch) | |
| tree | abdc24c53f8a9c2a7c283e799a44c29db145d780 /arch/mips | |
| parent | 7df676974359f927056b882e10a5b24d2033169b (diff) | |
| download | linux-44bf431b47b4298d8aaba7b02d0ad29fc609a03c.tar.gz linux-44bf431b47b4298d8aaba7b02d0ad29fc609a03c.tar.bz2 linux-44bf431b47b4298d8aaba7b02d0ad29fc609a03c.zip | |
mm/memory.c: Add memory read privilege on page fault handling
Here add pte_sw_mkyoung function to make page readable on MIPS
platform during page fault handling. This patch improves page
fault latency about 10% on my MIPS machine with lmbench
lat_pagefault case.
It is noop function on other arches, there is no negative
influence on those architectures.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/include/asm/pgtable.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h index 6f40612b3152..d9772aff2f02 100644 --- a/arch/mips/include/asm/pgtable.h +++ b/arch/mips/include/asm/pgtable.h @@ -414,6 +414,8 @@ static inline pte_t pte_mkyoung(pte_t pte) return pte; } +#define pte_sw_mkyoung pte_mkyoung + #ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT static inline int pte_huge(pte_t pte) { return pte_val(pte) & _PAGE_HUGE; } |