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Differential D31235

umtx: Add umtxq_requeue Linux emulation layer extension.
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Authored by dchagin on Jul 20 2021, 2:10 PM.
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kib
markj
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rG85f6b0c801ab: umtx: Add umtxq_requeue Linux emulation layer extension.
rG8e4d22c01d8f: umtx: Add umtxq_requeue Linux emulation layer extension.

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rS FreeBSD src repository - subversion
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Lint Passed
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Buildable 40554
Build 37443: arc lint + arc unit

Event Timeline

dchagin created this revision.Jul 20 2021, 2:10 PM
Herald added a subscriber: imp. · View Herald TranscriptJul 20 2021, 2:10 PM
dchagin requested review of this revision.Jul 20 2021, 2:10 PM
Harbormaster completed remote builds in B40554: Diff 92490.Jul 20 2021, 2:10 PM
dchagin added reviewers: kib, markj.Jul 20 2021, 2:20 PM
dchagin changed the repository for this revision from rS FreeBSD src repository - subversion to rG FreeBSD src repository.
dchagin updated this revision to Diff 92518.Jul 20 2021, 7:28 PM

followup D31248

Harbormaster completed remote builds in B40575: Diff 92518.Jul 20 2021, 7:28 PM
dchagin updated this revision to Diff 92597.Jul 21 2021, 6:59 PM

the same problem as D31234

Harbormaster completed remote builds in B40605: Diff 92597.Jul 21 2021, 6:59 PM
kib accepted this revision.Jul 21 2021, 7:34 PM
This revision is now accepted and ready to land.Jul 21 2021, 7:34 PM
Closed by commit rG8e4d22c01d8f: umtx: Add umtxq_requeue Linux emulation layer extension. (authored by dchagin). · Explain WhyJul 29 2021, 9:46 AM
This revision was automatically updated to reflect the committed changes.
dchagin added a commit: rG8e4d22c01d8f: umtx: Add umtxq_requeue Linux emulation layer extension..
markj added inline comments.Mar 21 2022, 3:32 PM
sys/kern/kern_umtx.c
647

umtxq_sleep() cannot tolerate the queue hash changing like this. It will wake up with the wrong hash chain lock held.

dchagin added a commit: rG85f6b0c801ab: umtx: Add umtxq_requeue Linux emulation layer extension..Jun 17 2022, 7:38 PM

Revision Contents
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sys/
kern/
35 lines
sys/
1 line

Diff 92490

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sys/kern/kern_umtx.c

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sys/sys/umtx.h

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