defer func() {
		if t.Failed() {
			t.Logf("Failure of this test may indicate that your system suffers from a known Linux kernel bug fixed on newer kernels. See https://golang.org/issue/49065.")
		}
	}()

	// Disable on affected builders to avoid flakiness, but otherwise keep
	// it enabled to potentially warn users that they are on a broken
	// kernel.
	if testenv.Builder() != "" && (runtime.GOARCH == "386" || runtime.GOARCH == "amd64") {

func isSweepDone() bool {
	return sweep.active.isDone()
}

// Returns only when span s has been swept.
//
//go:nowritebarrier
func (s *mspan) ensureSwept() {
	// Caller must disable preemption.
	// Otherwise when this function returns the span can become unswept again
	// (if GC is triggered on another goroutine).
	gp := getg()
	if gp.m.locks == 0 && gp.m.mallocing == 0 && gp != gp.m.g0 {

	runtime.RaceAcquire(addr)
}

func Release(addr unsafe.Pointer) {
	runtime.RaceRelease(addr)
}

func ReleaseMerge(addr unsafe.Pointer) {
	runtime.RaceReleaseMerge(addr)
}

func Disable() {
	runtime.RaceDisable()
}

func Enable() {
	runtime.RaceEnable()
}

func Read(addr unsafe.Pointer) {
	runtime.RaceRead(addr)
}

func Write(addr unsafe.Pointer) {
	runtime.RaceWrite(addr)

// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

package ppc64

	if r1 == 0 {
		err = errnoErr(e1)
	}
	return
}

func SetProcessPriorityBoost(process Handle, disable bool) (err error) {
	var _p0 uint32
	if disable {
		_p0 = 1
	}
	r1, _, e1 := syscall.Syscall(procSetProcessPriorityBoost.Addr(), 2, uintptr(process), uintptr(_p0), 0)
	if r1 == 0 {
		err = errnoErr(e1)
	}
	return
}

		hammerStoreLoadInt64Method, hammerStoreLoadUint64Method,
	}
	n := int(1e6)
	if testing.Short() {
		n = int(1e4)
	}
	const procs = 8
	defer runtime.GOMAXPROCS(runtime.GOMAXPROCS(procs))
	// Disable the GC because hammerStoreLoadPointer invokes
	// write barriers on values that aren't real pointers.
	defer debug.SetGCPercent(debug.SetGCPercent(-1))
	// Ensure any in-progress GC is finished.
	runtime.GC()

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

	// By default, Search looks for a minimal set of changes that cause a failure when enabled.
	// If Disable is true, the search is inverted and seeks a minimal set of changes that
	// cause a failure when disabled. In this case, the search proceeds as normal except that
	// each pattern starts with a !.
	Disable bool

	// SkipDigits is the number of hex digits to use in skip messages.

	// could make the slow path here several times faster by
	// batching heap frees.

	// Bail early if there's no more reclaim work.
	if h.reclaimIndex.Load() >= 1<<63 {
		return
	}

	// Disable preemption so the GC can't start while we're
	// sweeping, so we can read h.sweepArenas, and so
	// traceGCSweepStart/Done pair on the P.
	mp := acquirem()

	trace := traceAcquire()
	if trace.ok() {

// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

package objabi