func Major(dev uint64) uint32 {
	return uint32((dev >> 8) & 0xff)
}

// Minor returns the minor component of a FreeBSD device number.
func Minor(dev uint64) uint32 {
	return uint32(dev & 0xffff00ff)
}

// Mkdev returns a FreeBSD device number generated from the given major and
// minor components.
func Mkdev(major, minor uint32) uint64 {
	return (uint64(major) << 8) | uint64(minor)

		expectedAnnotations []container.Annotation
	}{
		{
			description: "no devices",
			deviceIDs:   []string{},
		},
		{
			description:         "one device",
			deviceIDs:           []string{"vendor.com/class=device1"},
			expectedAnnotations: []container.Annotation{{Name: "cdi.k8s.io/test-driver-name_test-claim-uid", Value: "vendor.com/class=device1"}},
		},
	}

	as := assert.New(t)
	for _, tc := range testCases {

    const Cluster& cluster_a, const Cluster& cluster_b) {
  DeviceSet devices = cluster_a.devices();
  devices.UnionWith(cluster_b.devices());

  TF_ASSIGN_OR_RETURN(
      std::optional<jit::DeviceId> maybe_chosen_device,
      MaybePickDeviceForXla(device_info_cache_, devices,
                            /*allow_mixing_unknown_and_cpu=*/false));
  if (!maybe_chosen_device.has_value()) {

LogicalResult GetTpuDeviceAssignment(
    ClusterOp cluster, ReplicateOp replicate, mlir::ModuleOp module,
    absl::StatusOr<TPUDeviceAssignment>& status_or_tpu_device_assignment) {
  mlir::TF::RuntimeDevices devices;
  if (failed(tensorflow::GetDevicesFromOp(module, &devices))) return failure();

  uint32_t num_replicas = replicate.getN();

  auto num_cores_per_replica_attr = cluster->getAttrOfType<mlir::IntegerAttr>(

// to manage containers. For example, they contain functions to configure containers' cgroups,
// ensure containers run with the desired QoS, and allocate compute resources like cpus, memory,
// devices...

// CHECK-NEXT: [[o_chain:%.*]], [[o:%.*]] = tfrt_fallback_async.executeop.seq([[in_chain]]) key(0) cost({{.*}}) device("/job:localhost/replica:0/task:0/device:CPU:0") "tf.VarHandleOp"()
// CHECK-NEXT: [[o_chain_0:%.*]], [[o1:%.*]] = tfrt_fallback_async.executeop.seq([[in_chain]]) key(1) cost({{.*}}) device("/job:localhost/replica:0/task:0/device:CPU:0") "tf.ReadVariableOp"([[o]]) {dtype = f32} : 1

)

// HostUtils defines the set of methods for interacting with paths on a host.
type HostUtils interface {
	// DeviceOpened determines if the device (e.g. /dev/sdc) is in use elsewhere
	// on the system, i.e. still mounted.
	DeviceOpened(pathname string) (bool, error)
	// PathIsDevice determines if a path is a device.
	PathIsDevice(pathname string) (bool, error)

// "replicate_on_last_tile_dim" and "last_tile_dims" should be deducted from the
// real Tensor dimensions when tiled.
// For example:
// f32[8,512](sharding={devices=[1,1,2]0,1 last_tile_dims={REPLICATED})
// also means a replicated tensor over all devices.
//
// See xla_data.proto for detailed explanations on the fields.
int GetDimsFromXLAShardingTiled(const xla::OpSharding& xla_sharding);

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#include "textflag.h"

// Linux/ARM atomic operations.

// Because there is so much variation in ARM devices,
// the Linux kernel provides an appropriate compare-and-swap
// implementation at address 0xffff0fc0.  Caller sets:
//	R0 = old value
//	R1 = new value
//	R2 = addr
//	LR = return address

	switch runtime.GOOS {
	case "darwin", "ios", "dragonfly", "freebsd", "netbsd", "openbsd":
		ps = []string{
			"/dev/null",
		}
	case "linux":
		ps = []string{
			"/dev/null",
			"/proc/stat",
			"/sys/devices/system/cpu/online",
		}
	}
	nps := ps[:0]
	for _, p := range ps {
		f, err := os.Open(p)
		if err != nil {
			continue
		}
		f.Close()
		nps = append(nps, p)
	}
	return nps