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runtime: remove mcache field from m

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Having an mcache field in both m and p is confusing, so remove it from m.
Always use mcache field from p. Use new variable mcache0 during bootstrap.

Change-Id: If2cba9f8bb131d911d512b61fd883a86cf62cc98
Reviewed-on: https://go-review.googlesource.com/c/go/+/205239
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
This commit is contained in:
Ian Lance Taylor 2019-11-04 14:25:22 -08:00
parent 7802b55176
commit 3093959ee1
7 changed files with 54 additions and 43 deletions
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src/runtime/runtime2.go
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@ -510,7 +510,6 @@ type m struct {
park note
alllink *m // on allm
schedlink muintptr
mcache *mcache
lockedg guintptr
createstack [32]uintptr // stack that created this thread.
lockedExt uint32 // tracking for external LockOSThread