riscv: use the common sub-word {,f}cmpset implementation
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Authored by kevans on Oct 3 2019, 7:25 PM.

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rS353131: riscv: use the common sub-word {,f}cmpset implementation

Summary

(For now? I do not know if riscv includes necessary instructions to do sub-word atomics)

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rS FreeBSD src repository - subversion

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Buildable 26851

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kevans created this revision.Oct 3 2019, 7:25 PM

Herald added a subscriber: imp. · View Herald TranscriptOct 3 2019, 7:25 PM

Harbormaster completed remote builds in B26851: Diff 62880.Oct 3 2019, 7:25 PM

Looks good to me. There are no sub-word atomic instructions for RISC-V.

This revision is now accepted and ready to land.Oct 4 2019, 2:35 AM

Closed by commit rS353131: riscv: use the common sub-word {,f}cmpset implementation (authored by kevans). · Explain WhyOct 6 2019, 1:35 AM

This revision was automatically updated to reflect the committed changes.

kevans added a commit: rS353131: riscv: use the common sub-word {,f}cmpset implementation.

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sys/

riscv/

include/

atomic.h

154 lines

Diff 62880

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sys/riscv/include/atomic.h

riscv: use the common sub-word {,f}cmpset implementationClosedPublicActions