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| author | Huacai Chen <chenhuacai@loongson.cn> | 2024-05-14 07:24:18 +0300 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2024-05-14 07:24:18 +0300 |
| commit | ff4a2443ef88874943f6d8444fb86327ec6f96b0 (patch) | |
| tree | 1c536dd6f3afb1de005b4bef532d41cd0a359b27 /arch/loongarch | |
| parent | d0b35b024725fda19c44f7144dd35d13c7e920ba (diff) | |
| download | linux-ff4a2443ef88874943f6d8444fb86327ec6f96b0.tar.xz | |
LoongArch: Select THP_SWAP if HAVE_ARCH_TRANSPARENT_HUGEPAGE
THP_SWAP has been proven to improve the swap throughput significantly on
x86_64 system according to commit bd4c82c22c367e0 ("mm, THP, swap: delay
splitting THP after swapped out"), on ARM64 system according to commit
d0637c505f8a1d ("arm64: enable THP_SWAP for arm64") and on RISC-V system
according to commit 87f81e66e2e84c7 ("riscv: enable THP_SWAP for RV64").
Enable THP_SWAP for LoongArch, testing the micro-benchmark which is
introduced by commit d0637c505f8a1d ("arm64: enable THP_SWAP for arm64")
shows below numbers on the Loongson-3A5000 board:
swp out bandwidth w/o patch: 1815716 bytes/ms (mean of 10 tests)
swp out bandwidth w/ patch: 3410003 bytes/ms (mean of 10 tests)
Improved by 46.75%!
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch')
| -rw-r--r-- | arch/loongarch/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index 24bce573dc2b..e22330064e98 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -70,6 +70,7 @@ config LOONGARCH select ARCH_WANT_LD_ORPHAN_WARN select ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP select ARCH_WANTS_NO_INSTR + select ARCH_WANTS_THP_SWAP if HAVE_ARCH_TRANSPARENT_HUGEPAGE select BUILDTIME_TABLE_SORT select COMMON_CLK select CPU_PM |