Messages in this thread Patch in this message | | | From | Jisheng Zhang <> | Subject | [PATCH v3 RESEND 1/2] riscv: select ARCH_USE_CMPXCHG_LOCKREF | Date | Mon, 25 Mar 2024 19:10:37 +0800 |
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Select ARCH_USE_CMPXCHG_LOCKREF to enable the cmpxchg-based lockless lockref implementation for riscv.
Using Linus' test case[1] on TH1520 platform, I see a 11.2% improvement. On JH7110 platform, I see 12.0% improvement.
Link: http://marc.info/?l=linux-fsdevel&m=137782380714721&w=4 [1] Signed-off-by: Jisheng Zhang <jszhang@kernel.org> Reviewed-by: Andrea Parri <parri.andrea@gmail.com> --- arch/riscv/Kconfig | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index aba42b2bf660..7895c77545f1 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -58,6 +58,7 @@ config RISCV select ARCH_SUPPORTS_PAGE_TABLE_CHECK if MMU select ARCH_SUPPORTS_PER_VMA_LOCK if MMU select ARCH_SUPPORTS_SHADOW_CALL_STACK if HAVE_SHADOW_CALL_STACK + select ARCH_USE_CMPXCHG_LOCKREF if 64BIT select ARCH_USE_MEMTEST select ARCH_USE_QUEUED_RWLOCKS select ARCH_USES_CFI_TRAPS if CFI_CLANG -- 2.43.0
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