runtime: add one extra lock ranking partial edge

This adds an assistQueue -> mheapSpecial edge, which can happen via gcFlushBgCredit [gets assistQueue lock] -> ready() -> ... -> allocm() -> newobject -> .. mProf_Malloc() -> setprofilebucket() [gets mheap special lock] From https://build.golang.org/log/6f8f253f6c3a747de411cfdf78c27980146618be Change-Id: Icdfba41b49aa704e8f6f20d25271f938afaf52ac Reviewed-on: https://go-review.googlesource.com/c/go/+/231463 Run-TryBot: Dan Scales <[email protected]> TryBot-Result: Gobot Gobot <[email protected]> Reviewed-by: Michael Knyszek <[email protected]>
threestoneliu · May 1, 2020 · a81bc8e · a81bc8e
1 parent d1b36c8
commit a81bc8e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/runtime/lockrank.go b/src/runtime/lockrank.go
@@ -223,7 +223,7 @@ var lockPartialOrder [][]lockRank = [][]lockRank{
 	lockRankSudog:        {lockRankNotifyList, lockRankHchan},
 	lockRankWbufSpans:    {lockRankScavenge, lockRankSweepWaiters, lockRankAssistQueue, lockRankSweep, lockRankSched, lockRankAllg, lockRankPollDesc, lockRankTimers, lockRankItab, lockRankReflectOffs, lockRankHchan, lockRankNotifyList, lockRankTraceStrings, lockRankMspanSpecial, lockRankProf, lockRankRoot, lockRankDefer, lockRankSudog},
 	lockRankMheap:        {lockRankScavenge, lockRankSweepWaiters, lockRankAssistQueue, lockRankCpuprof, lockRankSweep, lockRankSched, lockRankAllg, lockRankAllp, lockRankPollDesc, lockRankTimers, lockRankItab, lockRankReflectOffs, lockRankNotifyList, lockRankTraceBuf, lockRankTraceStrings, lockRankHchan, lockRankMspanSpecial, lockRankProf, lockRankGcBitsArenas, lockRankRoot, lockRankMcentral, lockRankStackpool, lockRankStackLarge, lockRankDefer, lockRankSudog, lockRankWbufSpans, lockRankSpanSetSpine},
-	lockRankMheapSpecial: {lockRankScavenge, lockRankCpuprof, lockRankSweep, lockRankSched, lockRankAllg, lockRankAllp, lockRankTimers, lockRankItab, lockRankReflectOffs, lockRankNotifyList, lockRankTraceBuf, lockRankTraceStrings, lockRankHchan},
+	lockRankMheapSpecial: {lockRankScavenge, lockRankAssistQueue, lockRankCpuprof, lockRankSweep, lockRankSched, lockRankAllg, lockRankAllp, lockRankTimers, lockRankItab, lockRankReflectOffs, lockRankNotifyList, lockRankTraceBuf, lockRankTraceStrings, lockRankHchan},
 	lockRankGlobalAlloc:  {lockRankProf, lockRankSpine, lockRankSpanSetSpine, lockRankMheap, lockRankMheapSpecial},
 
 	lockRankGFree: {lockRankSched},