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186355454e915e2ef9897127c495edbe4959c82e
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>
Please follow buildroot tips to startup T-HEAD C9xx CPU's boards: T-HEAD buildroot
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