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runtime: add a lock partial order edge (assistQueue -> mspanSpecial) 

From interesting stack trace from GC assist through memory profiling to
addspecial().

Fixes #39022

Change-Id: Ia0506b820fe29ae91490b61c4e9c2fffcad9f7d6
Reviewed-on: https://go-review.googlesource.com/c/go/+/233599
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
This commit is contained in:
Dan Scales 2020-05-12 15:44:47 -07:00
parent 5c802c13e8
commit f474e9e549
1 changed files with 1 additions and 1 deletions
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2
src/runtime/lockrank.go
View File

@ -214,7 +214,7 @@ var lockPartialOrder [][]lockRank = [][]lockRank{
lockRankNotifyList: {},
lockRankTraceBuf: {lockRankScavenge},
lockRankTraceStrings: {lockRankTraceBuf},
lockRankMspanSpecial: {lockRankScavenge, lockRankCpuprof, lockRankSched, lockRankAllg, lockRankAllp, lockRankTimers, lockRankItab, lockRankReflectOffs, lockRankHchan, lockRankNotifyList, lockRankTraceBuf, lockRankTraceStrings},
lockRankMspanSpecial: {lockRankScavenge, lockRankAssistQueue, lockRankCpuprof, lockRankSched, lockRankAllg, lockRankAllp, lockRankTimers, lockRankItab, lockRankReflectOffs, lockRankHchan, lockRankNotifyList, lockRankTraceBuf, lockRankTraceStrings},
lockRankProf: {lockRankScavenge, lockRankAssistQueue, lockRankCpuprof, lockRankSweep, lockRankSched, lockRankAllg, lockRankAllp, lockRankTimers, lockRankItab, lockRankReflectOffs, lockRankNotifyList, lockRankTraceBuf, lockRankTraceStrings, lockRankHchan},
lockRankGcBitsArenas: {lockRankScavenge, lockRankAssistQueue, lockRankCpuprof, lockRankSched, lockRankAllg, lockRankTimers, lockRankItab, lockRankReflectOffs, lockRankNotifyList, lockRankTraceBuf, lockRankTraceStrings, lockRankHchan},
lockRankRoot: {},