runtime: remove old page allocator

This change removes the old page allocator from the runtime.

Updates #35112.

Change-Id: Ib20e1c030f869b6318cd6f4288a9befdbae1b771
Reviewed-on: https://go-review.googlesource.com/c/go/+/195700
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>

1 files changed, 0 insertions, 23 deletions

diff --git a/src/runtime/gc_test.go b/src/runtime/gc_test.go
index efabc05a43..54a0e7d604 100644
--- a/src/runtime/gc_test.go
+++ b/src/runtime/gc_test.go
@@ -464,29 +464,6 @@ func TestReadMemStats(t *testing.T) {
 	}
 }
 
-func TestUnscavHugePages(t *testing.T) {
-	if !runtime.OldPageAllocator {
-		// This test is only relevant for the old page allocator.
-		return
-	}
-	// Allocate 20 MiB and immediately free it a few times to increase
-	// the chance that unscavHugePages isn't zero and that some kind of
-	// accounting had to happen in the runtime.
-	for j := 0; j < 3; j++ {
-		var large [][]byte
-		for i := 0; i < 5; i++ {
-			large = append(large, make([]byte, runtime.PhysHugePageSize))
-		}
-		runtime.KeepAlive(large)
-		runtime.GC()
-	}
-	base, slow := runtime.UnscavHugePagesSlow()
-	if base != slow {
-		logDiff(t, "unscavHugePages", reflect.ValueOf(base), reflect.ValueOf(slow))
-		t.Fatal("unscavHugePages mismatch")
-	}
-}
-
 func logDiff(t *testing.T, prefix string, got, want reflect.Value) {
 	typ := got.Type()
 	switch typ.Kind() {