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runtime: remove ptr/scalar bitmap metric

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We don't use this mechanism any more, so the metric will always be zero.
Since CL 616255.

Update #73628

Change-Id: Ic179927a8bc24e6291876c218d88e8848b057c2a
Reviewed-on: https://go-review.googlesource.com/c/go/+/671096
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Keith Randall <khr@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This commit is contained in:
khr@golang.org 2025-05-08 10:00:22 -07:00 • committed by Gopher Robot
parent e46c8e0558
commit 60d3bcdec3
4 changed files with 16 additions and 26 deletions
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11
src/runtime/mheap.go
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@ -979,10 +979,9 @@ func (h *mheap) reclaimChunk(arenas []arenaIdx, pageIdx, n uintptr) uintptr {
type spanAllocType uint8
const (
spanAllocHeap spanAllocType = iota // heap span
spanAllocStack // stack span
spanAllocPtrScalarBits // unrolled GC prog bitmap span
spanAllocWorkBuf // work buf span
spanAllocHeap spanAllocType = iota // heap span
spanAllocStack // stack span
spanAllocWorkBuf // work buf span
)
// manual returns true if the span allocation is manually managed.
@ -1407,8 +1406,6 @@ HaveSpan:
atomic.Xaddint64(&stats.inHeap, int64(nbytes))
case spanAllocStack:
atomic.Xaddint64(&stats.inStacks, int64(nbytes))
case spanAllocPtrScalarBits:
atomic.Xaddint64(&stats.inPtrScalarBits, int64(nbytes))
case spanAllocWorkBuf:
atomic.Xaddint64(&stats.inWorkBufs, int64(nbytes))
}
@ -1719,8 +1716,6 @@ func (h *mheap) freeSpanLocked(s *mspan, typ spanAllocType) {
atomic.Xaddint64(&stats.inHeap, -int64(nbytes))
case spanAllocStack:
atomic.Xaddint64(&stats.inStacks, -int64(nbytes))
case spanAllocPtrScalarBits:
atomic.Xaddint64(&stats.inPtrScalarBits, -int64(nbytes))
case spanAllocWorkBuf:
atomic.Xaddint64(&stats.inWorkBufs, -int64(nbytes))
}