arm: Implement atomic_testandset_acq_long as a simple wrapper
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Authored by jhb on Fri, Nov 15, 8:40 PM.

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Reviewers

kib
jrtc27
andrew

Summary

Use a memory barrier after calling the existing atomic_testandset_long
rather than using the fcmpset-based fallback version from
<sys/_atomic_subword.h>.

Diff Detail

Repository

rG FreeBSD src repository

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Build Status

Buildable 60620
Build 57504: arc lint + arc unit

Event Timeline

jhb created this revision.Fri, Nov 15, 8:40 PM

Herald added a reviewer: andrew. · View Herald TranscriptFri, Nov 15, 8:40 PM

Herald added a subscriber: imp. · View Herald Transcript

jhb requested review of this revision.Fri, Nov 15, 8:40 PM

jhb added a parent revision: D47627: riscv: Add implementations of atomic_testand(set|clear)_(32|64|long).

Harbormaster completed remote builds in B60620: Diff 146565.Fri, Nov 15, 8:40 PM

jhb added a child revision: D47629: atomic(9): Remove fcmpset-based fallback for atomic_testand(clear|set).Fri, Nov 15, 8:40 PM

Revision Contents
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Path

Size

sys/

arm/

include/

atomic.h

12 lines

Diff 146565

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arm: Implement atomic_testandset_acq_long as a simple wrapperNeeds ReviewPublicActions