Differential D32066

LinuxKPI: allocate current before taking shrinkers lock
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Authored by wulf on Sep 23 2021, 12:39 AM.

Details

Reviewers

• hselasky
manu

Commits

rGc1daa6fa4ca5: LinuxKPI: allocate current before taking shrinkers lock
rG2fe9ea5d3ad6: LinuxKPI: allocate current before taking shrinkers lock

Summary

This fixes following warnings when shrinkers are invoked first time:

uma_zalloc_debug: zone "lkpicurr" with the following non-sleepable
locks held: exclusive sleep mutex lkpi-shrinker (lkpi-shrinker)

uma_zalloc_debug: zone "lkpimm" with the following non-sleepable locks
held: exclusive sleep mutex lkpi-shrinker (lkpi-shrinker)

Test Plan

Run drm-kmod in low-memory conditions

Diff Detail

Repository

rG FreeBSD src repository

Lint

Lint Not Applicable

Unit

Tests Not Applicable

Event Timeline

wulf created this revision.Sep 23 2021, 12:39 AM

Herald added subscribers: linuxkpi, emaste, imp. · View Herald TranscriptSep 23 2021, 12:39 AM

wulf requested review of this revision.Sep 23 2021, 12:39 AM

Harbormaster completed remote builds in B41648: Diff 95529.Sep 23 2021, 12:40 AM

manu accepted this revision.Sep 23 2021, 5:44 AM

This revision is now accepted and ready to land.Sep 23 2021, 5:44 AM

• hselasky accepted this revision.Sep 23 2021, 7:22 AM

Closed by commit rG2fe9ea5d3ad6: LinuxKPI: allocate current before taking shrinkers lock (authored by wulf). · Explain WhySep 29 2021, 8:28 PM

This revision was automatically updated to reflect the committed changes.

wulf added a commit: rG2fe9ea5d3ad6: LinuxKPI: allocate current before taking shrinkers lock.

wulf added a commit: rGc1daa6fa4ca5: LinuxKPI: allocate current before taking shrinkers lock.Oct 13 2021, 9:20 AM

Revision Contents
Changeset List

Path

Size

sys/

compat/

linuxkpi/

common/

src/

linux_shrinker.c

2 lines

Diff 95974

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sys/compat/linuxkpi/common/src/linux_shrinker.c

LinuxKPI: allocate current before taking shrinkers lockClosedPublicActions