diff --git a/OWNERS b/OWNERS
index 9221d3e..c52231e 100644
--- a/OWNERS
+++ b/OWNERS
@@ -2,29 +2,29 @@
 # approving build related projects.
 
 # AMER
-agespino@google.com
+agespino@google.com  #{LAST_RESORT_SUGGESTION}
 ccross@android.com
 colefaust@google.com
-cparsons@google.com
-dacek@google.com
-delmerico@google.com
+cparsons@google.com  #{LAST_RESORT_SUGGESTION}
+dacek@google.com  #{LAST_RESORT_SUGGESTION}
+delmerico@google.com  #{LAST_RESORT_SUGGESTION}
 dwillemsen@google.com
-eakammer@google.com
+eakammer@google.com  #{LAST_RESORT_SUGGESTION}
 jihoonkang@google.com
-jobredeaux@google.com
+jobredeaux@google.com  #{LAST_RESORT_SUGGESTION}
 joeo@google.com
-juu@google.com
+juu@google.com  #{LAST_RESORT_SUGGESTION}
 lamontjones@google.com
 mrziwang@google.com
 spandandas@google.com
-tradical@google.com
-usta@google.com
-vinhdaitran@google.com
+tradical@google.com  #{LAST_RESORT_SUGGESTION}
+usta@google.com  #{LAST_RESORT_SUGGESTION}
+vinhdaitran@google.com  #{LAST_RESORT_SUGGESTION}
 weiwli@google.com
 yudiliu@google.com
 
 # APAC
-jingwen@google.com
+jingwen@google.com  #{LAST_RESORT_SUGGESTION}
 
 # EMEA
-lberki@google.com
+lberki@google.com  #{LAST_RESORT_SUGGESTION}
diff --git a/aconfig/cc_aconfig_library.go b/aconfig/cc_aconfig_library.go
index 0583bef..5b0fb4a 100644
--- a/aconfig/cc_aconfig_library.go
+++ b/aconfig/cc_aconfig_library.go
@@ -143,6 +143,7 @@
 }
 
 type bazelCcAconfigLibraryAttributes struct {
+	cc.SdkAttributes
 	Aconfig_declarations bazel.LabelAttribute
 	Dynamic_deps         bazel.LabelListAttribute
 }
@@ -154,12 +155,13 @@
 // module type returns a cc library and the bp2build conversion is called on the
 // cc library type.
 
-func (this *CcAconfigLibraryCallbacks) GeneratorBp2build(ctx android.Bp2buildMutatorContext) bool {
+func (this *CcAconfigLibraryCallbacks) GeneratorBp2build(ctx android.Bp2buildMutatorContext, module *cc.Module) bool {
 	if ctx.ModuleType() != "cc_aconfig_library" {
 		return false
 	}
 
 	attrs := bazelCcAconfigLibraryAttributes{
+		SdkAttributes:        cc.Bp2BuildParseSdkAttributes(module),
 		Aconfig_declarations: *bazel.MakeLabelAttribute(android.BazelLabelForModuleDepSingle(ctx, this.properties.Aconfig_declarations).Label),
 		Dynamic_deps:         bazel.MakeLabelListAttribute(android.BazelLabelForModuleDeps(ctx, []string{baseLibDep})),
 	}
@@ -168,6 +170,12 @@
 		Bzl_load_location: "//build/bazel/rules/cc:cc_aconfig_library.bzl",
 	}
 
-	ctx.CreateBazelTargetModule(props, android.CommonAttributes{Name: ctx.ModuleName()}, &attrs)
+	ctx.CreateBazelTargetModule(
+		props,
+		android.CommonAttributes{
+			Name: ctx.ModuleName(),
+			Tags: android.ApexAvailableTagsWithoutTestApexes(ctx, module),
+		},
+		&attrs)
 	return true
 }
diff --git a/android/allowlists/allowlists.go b/android/allowlists/allowlists.go
index 5b2519d..07e1f12 100644
--- a/android/allowlists/allowlists.go
+++ b/android/allowlists/allowlists.go
@@ -184,6 +184,7 @@
 		"external/libdrm":                          Bp2BuildDefaultTrue,
 		"external/libevent":                        Bp2BuildDefaultTrueRecursively,
 		"external/libgav1":                         Bp2BuildDefaultTrueRecursively,
+		"external/libdav1d":                        Bp2BuildDefaultTrueRecursively,
 		"external/libhevc":                         Bp2BuildDefaultTrueRecursively,
 		"external/libjpeg-turbo":                   Bp2BuildDefaultTrueRecursively,
 		"external/libmpeg2":                        Bp2BuildDefaultTrueRecursively,
@@ -813,6 +814,7 @@
 		"libcodec2_soft_vp8dec",
 		"libcodec2_soft_vp9dec",
 		"libcodec2_soft_av1dec_gav1",
+		"libcodec2_soft_av1dec_dav1d",
 		"libcodec2_soft_vp8enc",
 		"libcodec2_soft_vp9enc",
 		"libcodec2_soft_rawdec",
@@ -1643,10 +1645,11 @@
 		"libneuralnetworks",
 		"libneuralnetworks_static",
 		// M13: media.swcodec launch
-		"com.android.media.swcodec",
-		"test_com.android.media.swcodec",
-		"libstagefright_foundation",
-		"libcodec2_hidl@1.0",
+		// TODO(b/307389608) Relaunch swcodec after fixing rust dependencies
+		// "com.android.media.swcodec",
+		// "test_com.android.media.swcodec",
+		// "libstagefright_foundation",
+		// "libcodec2_hidl@1.0",
 	}
 
 	// Staging-mode allowlist. Modules in this list are only built
diff --git a/android/config.go b/android/config.go
index c6d8d9f..8300ef9 100644
--- a/android/config.go
+++ b/android/config.go
@@ -99,7 +99,7 @@
 
 	UseBazelProxy bool
 
-	BuildFromSourceStub bool
+	BuildFromTextStub bool
 
 	EnsureAllowlistIntegrity bool
 }
@@ -337,9 +337,9 @@
 	// unix sockets, instead of spawning Bazel as a subprocess.
 	UseBazelProxy bool
 
-	// If buildFromSourceStub is true then the Java API stubs are
-	// built from the source Java files, not the signature text files.
-	buildFromSourceStub bool
+	// If buildFromTextStub is true then the Java API stubs are
+	// built from the signature text files, not the source Java files.
+	buildFromTextStub bool
 
 	// If ensureAllowlistIntegrity is true, then the presence of any allowlisted
 	// modules that aren't mixed-built for at least one variant will cause a build
@@ -556,7 +556,7 @@
 		MultitreeBuild: cmdArgs.MultitreeBuild,
 		UseBazelProxy:  cmdArgs.UseBazelProxy,
 
-		buildFromSourceStub: cmdArgs.BuildFromSourceStub,
+		buildFromTextStub: cmdArgs.BuildFromTextStub,
 	}
 
 	config.deviceConfig = &deviceConfig{
@@ -683,6 +683,7 @@
 		"framework-connectivity":            {},
 		"framework-connectivity-t":          {},
 		"framework-graphics":                {},
+		"framework-location":                {},
 		"framework-media":                   {},
 		"framework-mediaprovider":           {},
 		"framework-ondevicepersonalization": {},
@@ -2071,11 +2072,11 @@
 	// TODO: b/302320354 - Remove the coverage build specific logic once the
 	// robust solution for handling native properties in from-text stub build
 	// is implemented.
-	return !c.buildFromSourceStub && !c.JavaCoverageEnabled()
+	return c.buildFromTextStub && !c.JavaCoverageEnabled()
 }
 
 func (c *config) SetBuildFromTextStub(b bool) {
-	c.buildFromSourceStub = !b
+	c.buildFromTextStub = b
 	c.productVariables.Build_from_text_stub = boolPtr(b)
 }
 
diff --git a/android/metrics.go b/android/metrics.go
index 63c72cd..3571272 100644
--- a/android/metrics.go
+++ b/android/metrics.go
@@ -15,9 +15,13 @@
 package android
 
 import (
+	"bytes"
 	"io/ioutil"
+	"os"
 	"runtime"
 	"sort"
+	"strconv"
+	"time"
 
 	"github.com/google/blueprint/metrics"
 	"google.golang.org/protobuf/proto"
@@ -27,18 +31,21 @@
 
 var soongMetricsOnceKey = NewOnceKey("soong metrics")
 
-type SoongMetrics struct {
-	Modules  int
-	Variants int
+type soongMetrics struct {
+	modules       int
+	variants      int
+	perfCollector perfCollector
 }
 
-func readSoongMetrics(config Config) (SoongMetrics, bool) {
-	soongMetrics, ok := config.Peek(soongMetricsOnceKey)
-	if ok {
-		return soongMetrics.(SoongMetrics), true
-	} else {
-		return SoongMetrics{}, false
-	}
+type perfCollector struct {
+	events []*soong_metrics_proto.PerfCounters
+	stop   chan<- bool
+}
+
+func getSoongMetrics(config Config) *soongMetrics {
+	return config.Once(soongMetricsOnceKey, func() interface{} {
+		return &soongMetrics{}
+	}).(*soongMetrics)
 }
 
 func init() {
@@ -50,27 +57,27 @@
 type soongMetricsSingleton struct{}
 
 func (soongMetricsSingleton) GenerateBuildActions(ctx SingletonContext) {
-	metrics := SoongMetrics{}
+	metrics := getSoongMetrics(ctx.Config())
 	ctx.VisitAllModules(func(m Module) {
 		if ctx.PrimaryModule(m) == m {
-			metrics.Modules++
+			metrics.modules++
 		}
-		metrics.Variants++
-	})
-	ctx.Config().Once(soongMetricsOnceKey, func() interface{} {
-		return metrics
+		metrics.variants++
 	})
 }
 
 func collectMetrics(config Config, eventHandler *metrics.EventHandler) *soong_metrics_proto.SoongBuildMetrics {
 	metrics := &soong_metrics_proto.SoongBuildMetrics{}
 
-	soongMetrics, ok := readSoongMetrics(config)
-	if ok {
-		metrics.Modules = proto.Uint32(uint32(soongMetrics.Modules))
-		metrics.Variants = proto.Uint32(uint32(soongMetrics.Variants))
+	soongMetrics := getSoongMetrics(config)
+	if soongMetrics.modules > 0 {
+		metrics.Modules = proto.Uint32(uint32(soongMetrics.modules))
+		metrics.Variants = proto.Uint32(uint32(soongMetrics.variants))
 	}
 
+	soongMetrics.perfCollector.stop <- true
+	metrics.PerfCounters = soongMetrics.perfCollector.events
+
 	memStats := runtime.MemStats{}
 	runtime.ReadMemStats(&memStats)
 	metrics.MaxHeapSize = proto.Uint64(memStats.HeapSys)
@@ -107,6 +114,113 @@
 	return metrics
 }
 
+func StartBackgroundMetrics(config Config) {
+	perfCollector := &getSoongMetrics(config).perfCollector
+	stop := make(chan bool)
+	perfCollector.stop = stop
+
+	previousTime := time.Now()
+	previousCpuTime := readCpuTime()
+
+	ticker := time.NewTicker(time.Second)
+
+	go func() {
+		for {
+			select {
+			case <-stop:
+				ticker.Stop()
+				return
+			case <-ticker.C:
+				// carry on
+			}
+
+			currentTime := time.Now()
+
+			var memStats runtime.MemStats
+			runtime.ReadMemStats(&memStats)
+
+			currentCpuTime := readCpuTime()
+
+			interval := currentTime.Sub(previousTime)
+			intervalCpuTime := currentCpuTime - previousCpuTime
+			intervalCpuPercent := intervalCpuTime * 100 / interval
+
+			// heapAlloc is the memory that has been allocated on the heap but not yet GC'd.  It may be referenced,
+			// or unrefenced but not yet GC'd.
+			heapAlloc := memStats.HeapAlloc
+			// heapUnused is the memory that was previously used by the heap, but is currently not used.  It does not
+			// count memory that was used and then returned to the OS.
+			heapUnused := memStats.HeapIdle - memStats.HeapReleased
+			// heapOverhead is the memory used by the allocator and GC
+			heapOverhead := memStats.MSpanSys + memStats.MCacheSys + memStats.GCSys
+			// otherMem is the memory used outside of the heap.
+			otherMem := memStats.Sys - memStats.HeapSys - heapOverhead
+
+			perfCollector.events = append(perfCollector.events, &soong_metrics_proto.PerfCounters{
+				Time: proto.Uint64(uint64(currentTime.UnixNano())),
+				Groups: []*soong_metrics_proto.PerfCounterGroup{
+					{
+						Name: proto.String("cpu"),
+						Counters: []*soong_metrics_proto.PerfCounter{
+							{Name: proto.String("cpu_percent"), Value: proto.Int64(int64(intervalCpuPercent))},
+						},
+					}, {
+						Name: proto.String("memory"),
+						Counters: []*soong_metrics_proto.PerfCounter{
+							{Name: proto.String("heap_alloc"), Value: proto.Int64(int64(heapAlloc))},
+							{Name: proto.String("heap_unused"), Value: proto.Int64(int64(heapUnused))},
+							{Name: proto.String("heap_overhead"), Value: proto.Int64(int64(heapOverhead))},
+							{Name: proto.String("other"), Value: proto.Int64(int64(otherMem))},
+						},
+					},
+				},
+			})
+
+			previousTime = currentTime
+			previousCpuTime = currentCpuTime
+		}
+	}()
+}
+
+func readCpuTime() time.Duration {
+	if runtime.GOOS != "linux" {
+		return 0
+	}
+
+	stat, err := os.ReadFile("/proc/self/stat")
+	if err != nil {
+		return 0
+	}
+
+	endOfComm := bytes.LastIndexByte(stat, ')')
+	if endOfComm < 0 || endOfComm > len(stat)-2 {
+		return 0
+	}
+
+	stat = stat[endOfComm+2:]
+
+	statFields := bytes.Split(stat, []byte{' '})
+	// This should come from sysconf(_SC_CLK_TCK), but there's no way to call that from Go.  Assume it's 100,
+	// which is the value for all platforms we support.
+	const HZ = 100
+	const MS_PER_HZ = 1e3 / HZ * time.Millisecond
+
+	const STAT_UTIME_FIELD = 14 - 2
+	const STAT_STIME_FIELD = 15 - 2
+	if len(statFields) < STAT_STIME_FIELD {
+		return 0
+	}
+	userCpuTicks, err := strconv.ParseUint(string(statFields[STAT_UTIME_FIELD]), 10, 64)
+	if err != nil {
+		return 0
+	}
+	kernelCpuTicks, _ := strconv.ParseUint(string(statFields[STAT_STIME_FIELD]), 10, 64)
+	if err != nil {
+		return 0
+	}
+	return time.Duration(userCpuTicks+kernelCpuTicks) * MS_PER_HZ
+}
+
 func WriteMetrics(config Config, eventHandler *metrics.EventHandler, metricsFile string) error {
 	metrics := collectMetrics(config, eventHandler)
 
diff --git a/android/sdk_version.go b/android/sdk_version.go
index 1fadda0..aafcee7 100644
--- a/android/sdk_version.go
+++ b/android/sdk_version.go
@@ -48,6 +48,7 @@
 	SdkPublic
 	SdkSystem
 	SdkTest
+	SdkTestFrameworksCore
 	SdkModule
 	SdkSystemServer
 	SdkPrivate
@@ -67,6 +68,8 @@
 		return "system"
 	case SdkTest:
 		return "test"
+	case SdkTestFrameworksCore:
+		return "test_frameworks_core"
 	case SdkCore:
 		return "core"
 	case SdkCorePlatform:
@@ -92,6 +95,8 @@
 		return "android_system_stubs_current"
 	case SdkTest:
 		return "android_test_stubs_current"
+	case SdkTestFrameworksCore:
+		return "android_test_frameworks_core_stubs_current"
 	case SdkCore:
 		return "core.current.stubs"
 	case SdkModule:
@@ -137,7 +142,7 @@
 		return true
 	case SdkCore, SdkPublic, SdkSystem, SdkModule, SdkSystemServer:
 		return true
-	case SdkCorePlatform, SdkTest, SdkPrivate:
+	case SdkCorePlatform, SdkTest, SdkTestFrameworksCore, SdkPrivate:
 		return false
 	default:
 		panic(fmt.Errorf("unknown SdkKind=%v", s.Kind))
@@ -185,7 +190,8 @@
 		return ctx.Config().AlwaysUsePrebuiltSdks()
 	} else if !s.ApiLevel.IsPreview() {
 		// validation check
-		if s.Kind != SdkPublic && s.Kind != SdkSystem && s.Kind != SdkTest && s.Kind != SdkModule && s.Kind != SdkSystemServer {
+		if s.Kind != SdkPublic && s.Kind != SdkSystem && s.Kind != SdkTest &&
+			s.Kind != SdkTestFrameworksCore && s.Kind != SdkModule && s.Kind != SdkSystemServer {
 			panic(fmt.Errorf("prebuilt SDK is not not available for SdkKind=%q", s.Kind))
 			return false
 		}
@@ -266,6 +272,8 @@
 			kind = SdkSystem
 		case "test":
 			kind = SdkTest
+		case "test_frameworks_core":
+			kind = SdkTestFrameworksCore
 		case "module":
 			kind = SdkModule
 		case "system_server":
diff --git a/apex/androidmk.go b/apex/androidmk.go
index 2f5d8d4..6136cbd 100644
--- a/apex/androidmk.go
+++ b/apex/androidmk.go
@@ -260,6 +260,7 @@
 				fmt.Fprintln(w, "LOCAL_SOONG_INSTALL_PAIRS :=", a.outputFile.String()+":"+a.installedFile.String())
 				fmt.Fprintln(w, "LOCAL_SOONG_INSTALL_SYMLINKS := ", strings.Join(a.compatSymlinks.Strings(), " "))
 			}
+			fmt.Fprintln(w, "LOCAL_APEX_KEY_PATH := ", a.apexKeysPath.String())
 
 			// Because apex writes .mk with Custom(), we need to write manually some common properties
 			// which are available via data.Entries
diff --git a/apex/apex.go b/apex/apex.go
index f903373..adabdee 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -454,6 +454,9 @@
 	// Path where this APEX was installed.
 	installedFile android.InstallPath
 
+	// fragment for this apex for apexkeys.txt
+	apexKeysPath android.WritablePath
+
 	// Installed locations of symlinks for backward compatibility.
 	compatSymlinks android.InstallPaths
 
@@ -1923,6 +1926,7 @@
 
 		a.filesInfo = append(a.filesInfo, fileInfo)
 	}
+	a.apexKeysPath = writeApexKeys(ctx, a)
 }
 
 func (a *apexBundle) setCompression(ctx android.ModuleContext) {
diff --git a/apex/apex_test.go b/apex/apex_test.go
index e70d3af..a95a14d 100644
--- a/apex/apex_test.go
+++ b/apex/apex_test.go
@@ -3882,13 +3882,24 @@
 func vndkLibrariesTxtFiles(vers ...string) (result string) {
 	for _, v := range vers {
 		if v == "current" {
-			for _, txt := range []string{"llndk", "vndkcore", "vndksp", "vndkprivate", "vndkproduct"} {
+			for _, txt := range []string{"vndkcore", "vndksp", "vndkprivate", "vndkproduct"} {
 				result += `
 					` + txt + `_libraries_txt {
 						name: "` + txt + `.libraries.txt",
+						insert_vndk_version: true,
 					}
 				`
 			}
+			result += `
+				llndk_libraries_txt {
+					name: "llndk.libraries.txt",
+				}
+				llndk_libraries_txt_for_apex {
+					name: "llndk.libraries.txt.apex",
+					stem: "llndk.libraries.txt",
+					insert_vndk_version: true,
+				}
+			`
 		} else {
 			for _, txt := range []string{"llndk", "vndkcore", "vndksp", "vndkprivate", "vndkproduct"} {
 				result += `
@@ -9078,8 +9089,8 @@
 		}
 	`)
 
-	apexKeysText := ctx.SingletonForTests("apex_keys_text")
-	content := apexKeysText.MaybeDescription("apexkeys.txt").BuildParams.Args["content"]
+	myapex := ctx.ModuleForTests("myapex", "android_common_myapex")
+	content := myapex.Output("apexkeys.txt").BuildParams.Args["content"]
 	ensureContains(t, content, `name="myapex.apex" public_key="vendor/foo/devkeys/testkey.avbpubkey" private_key="vendor/foo/devkeys/testkey.pem" container_certificate="vendor/foo/devkeys/test.x509.pem" container_private_key="vendor/foo/devkeys/test.pk8" partition="system" sign_tool="sign_myapex"`)
 }
 
@@ -9119,10 +9130,10 @@
 		}
 	`)
 
-	apexKeysText := ctx.SingletonForTests("apex_keys_text")
-	content := apexKeysText.MaybeDescription("apexkeys.txt").BuildParams.Args["content"]
+	content := ctx.ModuleForTests("myapex", "android_common_myapex").Output("apexkeys.txt").BuildParams.Args["content"]
+	ensureContains(t, content, `name="myapex.apex" public_key="vendor/foo/devkeys/testkey.avbpubkey" private_key="vendor/foo/devkeys/testkey.pem" container_certificate="vendor/foo/devkeys/test.x509.pem" container_private_key="vendor/foo/devkeys/test.pk8" partition="system" sign_tool="sign_myapex"`)
+	content = ctx.ModuleForTests("myapex_set", "android_common_myapex_set").Output("apexkeys.txt").BuildParams.Args["content"]
 	ensureContains(t, content, `name="myapex_set.apex" public_key="PRESIGNED" private_key="PRESIGNED" container_certificate="PRESIGNED" container_private_key="PRESIGNED" partition="system"`)
-	ensureContains(t, content, `name="myapex.apex" public_key="PRESIGNED" private_key="PRESIGNED" container_certificate="PRESIGNED" container_private_key="PRESIGNED" partition="system"`)
 }
 
 func TestAllowedFiles(t *testing.T) {
diff --git a/apex/builder.go b/apex/builder.go
index 729917f..d75cc1d 100644
--- a/apex/builder.go
+++ b/apex/builder.go
@@ -948,6 +948,8 @@
 
 	// installed-files.txt is dist'ed
 	a.installedFilesFile = a.buildInstalledFilesFile(ctx, a.outputFile, imageDir)
+
+	a.apexKeysPath = writeApexKeys(ctx, a)
 }
 
 // getCertificateAndPrivateKey retrieves the cert and the private key that will be used to sign
diff --git a/apex/key.go b/apex/key.go
index fc1456b..2405e98 100644
--- a/apex/key.go
+++ b/apex/key.go
@@ -16,8 +16,6 @@
 
 import (
 	"fmt"
-	"sort"
-	"strings"
 
 	"android/soong/android"
 	"android/soong/bazel"
@@ -33,7 +31,6 @@
 
 func registerApexKeyBuildComponents(ctx android.RegistrationContext) {
 	ctx.RegisterModuleType("apex_key", ApexKeyFactory)
-	ctx.RegisterParallelSingletonType("apex_keys_text", apexKeysTextFactory)
 }
 
 type apexKey struct {
@@ -102,99 +99,65 @@
 	}
 }
 
-// //////////////////////////////////////////////////////////////////////
-// apex_keys_text
-type apexKeysText struct {
-	output android.OutputPath
+type apexKeyEntry struct {
+	name                 string
+	presigned            bool
+	publicKey            string
+	privateKey           string
+	containerCertificate string
+	containerPrivateKey  string
+	partition            string
+	signTool             string
 }
 
-func (s *apexKeysText) GenerateBuildActions(ctx android.SingletonContext) {
-	s.output = android.PathForOutput(ctx, "apexkeys.txt")
-	type apexKeyEntry struct {
-		name                 string
-		presigned            bool
-		publicKey            string
-		privateKey           string
-		containerCertificate string
-		containerPrivateKey  string
-		partition            string
-		signTool             string
+func (e apexKeyEntry) String() string {
+	signTool := ""
+	if e.signTool != "" {
+		signTool = fmt.Sprintf(" sign_tool=%q", e.signTool)
 	}
-	toString := func(e apexKeyEntry) string {
-		signTool := ""
-		if e.signTool != "" {
-			signTool = fmt.Sprintf(" sign_tool=%q", e.signTool)
-		}
-		format := "name=%q public_key=%q private_key=%q container_certificate=%q container_private_key=%q partition=%q%s\n"
-		if e.presigned {
-			return fmt.Sprintf(format, e.name, "PRESIGNED", "PRESIGNED", "PRESIGNED", "PRESIGNED", e.partition, signTool)
-		} else {
-			return fmt.Sprintf(format, e.name, e.publicKey, e.privateKey, e.containerCertificate, e.containerPrivateKey, e.partition, signTool)
-		}
+	format := "name=%q public_key=%q private_key=%q container_certificate=%q container_private_key=%q partition=%q%s\n"
+	if e.presigned {
+		return fmt.Sprintf(format, e.name, "PRESIGNED", "PRESIGNED", "PRESIGNED", "PRESIGNED", e.partition, signTool)
+	} else {
+		return fmt.Sprintf(format, e.name, e.publicKey, e.privateKey, e.containerCertificate, e.containerPrivateKey, e.partition, signTool)
 	}
-
-	apexKeyMap := make(map[string]apexKeyEntry)
-	ctx.VisitAllModules(func(module android.Module) {
-		if m, ok := module.(*apexBundle); ok && m.Enabled() && m.installable() {
-			pem, key := m.getCertificateAndPrivateKey(ctx)
-			apexKeyMap[m.Name()] = apexKeyEntry{
-				name:                 m.Name() + ".apex",
-				presigned:            false,
-				publicKey:            m.publicKeyFile.String(),
-				privateKey:           m.privateKeyFile.String(),
-				containerCertificate: pem.String(),
-				containerPrivateKey:  key.String(),
-				partition:            m.PartitionTag(ctx.DeviceConfig()),
-				signTool:             proptools.String(m.properties.Custom_sign_tool),
-			}
-		}
-	})
-
-	// Find prebuilts and let them override apexBundle if they are preferred
-	ctx.VisitAllModules(func(module android.Module) {
-		if m, ok := module.(*Prebuilt); ok && m.Enabled() && m.installable() &&
-			m.Prebuilt().UsePrebuilt() {
-			apexKeyMap[m.BaseModuleName()] = apexKeyEntry{
-				name:      m.InstallFilename(),
-				presigned: true,
-				partition: m.PartitionTag(ctx.DeviceConfig()),
-			}
-		}
-	})
-
-	// Find apex_set and let them override apexBundle or prebuilts. This is done in a separate pass
-	// so that apex_set are not overridden by prebuilts.
-	ctx.VisitAllModules(func(module android.Module) {
-		if m, ok := module.(*ApexSet); ok && m.Enabled() {
-			entry := apexKeyEntry{
-				name:      m.InstallFilename(),
-				presigned: true,
-				partition: m.PartitionTag(ctx.DeviceConfig()),
-			}
-			apexKeyMap[m.BaseModuleName()] = entry
-		}
-	})
-
-	// iterating over map does not give consistent ordering in golang
-	var moduleNames []string
-	for key, _ := range apexKeyMap {
-		moduleNames = append(moduleNames, key)
-	}
-	sort.Strings(moduleNames)
-
-	var filecontent strings.Builder
-	for _, name := range moduleNames {
-		filecontent.WriteString(toString(apexKeyMap[name]))
-	}
-	android.WriteFileRule(ctx, s.output, filecontent.String())
 }
 
-func apexKeysTextFactory() android.Singleton {
-	return &apexKeysText{}
+func apexKeyEntryFor(ctx android.ModuleContext, module android.Module) apexKeyEntry {
+	switch m := module.(type) {
+	case *apexBundle:
+		pem, key := m.getCertificateAndPrivateKey(ctx)
+		return apexKeyEntry{
+			name:                 m.Name() + ".apex",
+			presigned:            false,
+			publicKey:            m.publicKeyFile.String(),
+			privateKey:           m.privateKeyFile.String(),
+			containerCertificate: pem.String(),
+			containerPrivateKey:  key.String(),
+			partition:            m.PartitionTag(ctx.DeviceConfig()),
+			signTool:             proptools.String(m.properties.Custom_sign_tool),
+		}
+	case *Prebuilt:
+		return apexKeyEntry{
+			name:      m.InstallFilename(),
+			presigned: true,
+			partition: m.PartitionTag(ctx.DeviceConfig()),
+		}
+	case *ApexSet:
+		return apexKeyEntry{
+			name:      m.InstallFilename(),
+			presigned: true,
+			partition: m.PartitionTag(ctx.DeviceConfig()),
+		}
+	}
+	panic(fmt.Errorf("unknown type(%t) for apexKeyEntry", module))
 }
 
-func (s *apexKeysText) MakeVars(ctx android.MakeVarsContext) {
-	ctx.Strict("SOONG_APEX_KEYS_FILE", s.output.String())
+func writeApexKeys(ctx android.ModuleContext, module android.Module) android.WritablePath {
+	path := android.PathForModuleOut(ctx, "apexkeys.txt")
+	entry := apexKeyEntryFor(ctx, module)
+	android.WriteFileRuleVerbatim(ctx, path, entry.String())
+	return path
 }
 
 // For Bazel / bp2build
diff --git a/apex/prebuilt.go b/apex/prebuilt.go
index 1a90c3a..7a9d23e 100644
--- a/apex/prebuilt.go
+++ b/apex/prebuilt.go
@@ -60,6 +60,9 @@
 	installedFile   android.InstallPath
 	outputApex      android.WritablePath
 
+	// fragment for this apex for apexkeys.txt
+	apexKeysPath android.WritablePath
+
 	// A list of apexFile objects created in prebuiltCommon.initApexFilesForAndroidMk which are used
 	// to create make modules in prebuiltCommon.AndroidMkEntries.
 	apexFilesForAndroidMk []apexFile
@@ -238,6 +241,7 @@
 					entries.AddStrings("LOCAL_SOONG_INSTALL_SYMLINKS", p.compatSymlinks.Strings()...)
 					entries.SetBoolIfTrue("LOCAL_UNINSTALLABLE_MODULE", !p.installable())
 					entries.AddStrings("LOCAL_OVERRIDES_MODULES", p.prebuiltCommonProperties.Overrides...)
+					entries.SetString("LOCAL_APEX_KEY_PATH", p.apexKeysPath.String())
 					p.addRequiredModules(entries)
 				},
 			},
@@ -759,6 +763,7 @@
 }
 
 func (p *Prebuilt) GenerateAndroidBuildActions(ctx android.ModuleContext) {
+	p.apexKeysPath = writeApexKeys(ctx, p)
 	// TODO(jungjw): Check the key validity.
 	p.inputApex = android.OptionalPathForModuleSrc(ctx, p.prebuiltCommonProperties.Selected_apex).Path()
 	p.installDir = android.PathForModuleInstall(ctx, "apex")
@@ -975,6 +980,7 @@
 }
 
 func (a *ApexSet) GenerateAndroidBuildActions(ctx android.ModuleContext) {
+	a.apexKeysPath = writeApexKeys(ctx, a)
 	a.installFilename = a.InstallFilename()
 	if !strings.HasSuffix(a.installFilename, imageApexSuffix) && !strings.HasSuffix(a.installFilename, imageCapexSuffix) {
 		ctx.ModuleErrorf("filename should end in %s or %s for apex_set", imageApexSuffix, imageCapexSuffix)
diff --git a/bazel/aquery.go b/bazel/aquery.go
index 27ccb20..35942bc 100644
--- a/bazel/aquery.go
+++ b/bazel/aquery.go
@@ -443,26 +443,21 @@
 
 // escapes the args received from aquery and creates a command string
 func commandString(actionEntry *analysis_v2_proto.Action) string {
-	switch actionEntry.Mnemonic {
-	case "GoCompilePkg", "GoStdlib":
-		argsEscaped := []string{}
-		for _, arg := range actionEntry.Arguments {
-			if arg == "" {
-				// If this is an empty string, add ''
-				// And not
-				// 1. (literal empty)
-				// 2. `''\'''\'''` (escaped version of '')
-				//
-				// If we had used (1), then this would appear as a whitespace when we strings.Join
-				argsEscaped = append(argsEscaped, "''")
-			} else {
-				argsEscaped = append(argsEscaped, proptools.ShellEscapeIncludingSpaces(arg))
-			}
+	argsEscaped := make([]string, len(actionEntry.Arguments))
+	for i, arg := range actionEntry.Arguments {
+		if arg == "" {
+			// If this is an empty string, add ''
+			// And not
+			// 1. (literal empty)
+			// 2. `''\'''\'''` (escaped version of '')
+			//
+			// If we had used (1), then this would appear as a whitespace when we strings.Join
+			argsEscaped[i] = "''"
+		} else {
+			argsEscaped[i] = proptools.ShellEscapeIncludingSpaces(arg)
 		}
-		return strings.Join(argsEscaped, " ")
-	default:
-		return strings.Join(proptools.ShellEscapeListIncludingSpaces(actionEntry.Arguments), " ")
 	}
+	return strings.Join(argsEscaped, " ")
 }
 
 func (a *aqueryArtifactHandler) normalActionBuildStatement(actionEntry *analysis_v2_proto.Action) (*BuildStatement, error) {
diff --git a/cc/binary.go b/cc/binary.go
index 0722f81..0f05605 100644
--- a/cc/binary.go
+++ b/cc/binary.go
@@ -651,7 +651,7 @@
 
 		Features: baseAttrs.features,
 
-		sdkAttributes: bp2BuildParseSdkAttributes(m),
+		SdkAttributes: Bp2BuildParseSdkAttributes(m),
 
 		Native_coverage: baseAttrs.Native_coverage,
 	}
@@ -708,7 +708,7 @@
 
 	Features bazel.StringListAttribute
 
-	sdkAttributes
+	SdkAttributes
 
 	tidyAttributes
 
diff --git a/cc/bp2build.go b/cc/bp2build.go
index 7ae8d89..919b4d4 100644
--- a/cc/bp2build.go
+++ b/cc/bp2build.go
@@ -85,7 +85,7 @@
 
 	Features bazel.StringListAttribute
 
-	sdkAttributes
+	SdkAttributes
 
 	tidyAttributes
 }
@@ -1185,7 +1185,7 @@
 		implementationDynamicDeps := linkerAttrs.dynamicDeps.Clone()
 		implementationDynamicDeps.Append(linkerAttrs.implementationDynamicDeps)
 
-		sdkAttrs := bp2BuildParseSdkAttributes(m)
+		sdkAttrs := Bp2BuildParseSdkAttributes(m)
 
 		exportedIncludes := bp2BuildParseExportedIncludes(ctx, m, &compilerAttrs.includes)
 		includeAttrs := includesAttributes{
@@ -1207,7 +1207,7 @@
 				Implementation_deps:         *implementationDeps,
 				Implementation_dynamic_deps: *implementationDynamicDeps,
 				Tags:                        apexAvailableTags,
-				sdkAttributes:               sdkAttrs,
+				SdkAttributes:               sdkAttrs,
 				includesAttributes:          includeAttrs,
 			},
 		)
@@ -1222,14 +1222,14 @@
 	return nil
 }
 
-func bp2BuildParseSdkAttributes(module *Module) sdkAttributes {
-	return sdkAttributes{
+func Bp2BuildParseSdkAttributes(module *Module) SdkAttributes {
+	return SdkAttributes{
 		Sdk_version:     module.Properties.Sdk_version,
 		Min_sdk_version: module.Properties.Min_sdk_version,
 	}
 }
 
-type sdkAttributes struct {
+type SdkAttributes struct {
 	Sdk_version     *string
 	Min_sdk_version *string
 }
diff --git a/cc/builder.go b/cc/builder.go
index f5e0dcc..c8fa1e4 100644
--- a/cc/builder.go
+++ b/cc/builder.go
@@ -875,7 +875,8 @@
 // into a single .ldump sAbi dump file
 func transformDumpToLinkedDump(ctx android.ModuleContext, sAbiDumps android.Paths, soFile android.Path,
 	baseName, exportedHeaderFlags string, symbolFile android.OptionalPath,
-	excludedSymbolVersions, excludedSymbolTags []string) android.OptionalPath {
+	excludedSymbolVersions, excludedSymbolTags []string,
+	api string) android.OptionalPath {
 
 	outputFile := android.PathForModuleOut(ctx, baseName+".lsdump")
 
@@ -892,6 +893,11 @@
 	for _, tag := range excludedSymbolTags {
 		symbolFilterStr += " --exclude-symbol-tag " + tag
 	}
+	apiLevelsJson := android.GetApiLevelsJson(ctx)
+	implicits = append(implicits, apiLevelsJson)
+	symbolFilterStr += " --api-map " + apiLevelsJson.String()
+	symbolFilterStr += " --api " + api
+
 	rule := sAbiLink
 	args := map[string]string{
 		"symbolFilter":        symbolFilterStr,
diff --git a/cc/cc.go b/cc/cc.go
index 8c248f9..814a66c 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -589,7 +589,7 @@
 	GeneratorFlags(ctx ModuleContext, flags Flags, deps PathDeps) Flags
 	GeneratorSources(ctx ModuleContext) GeneratedSource
 	GeneratorBuildActions(ctx ModuleContext, flags Flags, deps PathDeps)
-	GeneratorBp2build(ctx android.Bp2buildMutatorContext) bool
+	GeneratorBp2build(ctx android.Bp2buildMutatorContext, module *Module) bool
 }
 
 // compiler is the interface for a compiler helper object. Different module decorators may implement
@@ -4218,7 +4218,7 @@
 	if len(c.generators) > 0 {
 		allConverted := true
 		for _, generator := range c.generators {
-			allConverted = allConverted && generator.GeneratorBp2build(ctx)
+			allConverted = allConverted && generator.GeneratorBp2build(ctx, c)
 		}
 		if allConverted {
 			return
diff --git a/cc/config/global.go b/cc/config/global.go
index 67ea4fd..892a86c 100644
--- a/cc/config/global.go
+++ b/cc/config/global.go
@@ -259,6 +259,7 @@
 		"-Werror=fortify-source",
 
 		"-Werror=address-of-temporary",
+		"-Werror=incompatible-function-pointer-types",
 		"-Werror=null-dereference",
 		"-Werror=return-type",
 
@@ -335,10 +336,6 @@
 		"-fcommon",
 		// http://b/191699019
 		"-Wno-format-insufficient-args",
-		// http://b/296321145
-		// Indicates potential memory or stack corruption, so should be changed
-		// to a hard error. Currently triggered by some vendor code.
-		"-Wno-incompatible-function-pointer-types",
 		// http://b/296321508
 		// Introduced in response to a critical security vulnerability and
 		// should be a hard error - it requires only whitespace changes to fix.
@@ -356,7 +353,7 @@
 
 	llvmNextExtraCommonGlobalCflags = []string{
 		// Do not report warnings when testing with the top of trunk LLVM.
-		"-Wno-error",
+		"-Wno-everything",
 	}
 
 	// Flags that must not appear in any command line.
@@ -472,6 +469,7 @@
 		flags := noOverrideGlobalCflags
 		if ctx.Config().IsEnvTrue("LLVM_NEXT") {
 			flags = append(noOverrideGlobalCflags, llvmNextExtraCommonGlobalCflags...)
+			IllegalFlags = []string{} // Don't fail build while testing a new compiler.
 		}
 		return strings.Join(flags, " ")
 	})
diff --git a/cc/library.go b/cc/library.go
index 2161512..d22bcec 100644
--- a/cc/library.go
+++ b/cc/library.go
@@ -286,7 +286,7 @@
 	Implementation_dynamic_deps bazel.LabelListAttribute
 	Tags                        bazel.StringListAttribute
 
-	sdkAttributes
+	SdkAttributes
 	includesAttributes
 }
 
@@ -347,7 +347,7 @@
 		Whole_archive_deps:                *linkerAttrs.wholeArchiveDeps.Clone().Append(staticAttrs.Whole_archive_deps),
 		System_dynamic_deps:               *linkerAttrs.systemDynamicDeps.Clone().Append(staticAttrs.System_dynamic_deps),
 		Runtime_deps:                      linkerAttrs.runtimeDeps,
-		sdkAttributes:                     bp2BuildParseSdkAttributes(m),
+		SdkAttributes:                     Bp2BuildParseSdkAttributes(m),
 		Native_coverage:                   baseAttributes.Native_coverage,
 		Additional_compiler_inputs:        compilerAttrs.additionalCompilerInputs,
 	}
@@ -375,7 +375,7 @@
 		Implementation_whole_archive_deps: linkerAttrs.implementationWholeArchiveDeps,
 		System_dynamic_deps:               *linkerAttrs.systemDynamicDeps.Clone().Append(sharedAttrs.System_dynamic_deps),
 		Runtime_deps:                      linkerAttrs.runtimeDeps,
-		sdkAttributes:                     bp2BuildParseSdkAttributes(m),
+		SdkAttributes:                     Bp2BuildParseSdkAttributes(m),
 		Native_coverage:                   baseAttributes.Native_coverage,
 		Additional_compiler_inputs:        compilerAttrs.additionalCompilerInputs,
 	}
@@ -1904,17 +1904,19 @@
 		}
 		exportedHeaderFlags := strings.Join(SourceAbiFlags, " ")
 		headerAbiChecker := library.getHeaderAbiCheckerProperties(ctx)
-		library.sAbiOutputFile = transformDumpToLinkedDump(ctx, objs.sAbiDumpFiles, soFile, fileName, exportedHeaderFlags,
-			android.OptionalPathForModuleSrc(ctx, library.symbolFileForAbiCheck(ctx)),
-			headerAbiChecker.Exclude_symbol_versions,
-			headerAbiChecker.Exclude_symbol_tags)
-
-		addLsdumpPath(classifySourceAbiDump(ctx) + ":" + library.sAbiOutputFile.String())
-
 		// The logic must be consistent with classifySourceAbiDump.
 		isVndk := ctx.useVndk() && ctx.isVndk()
 		isNdk := ctx.isNdk(ctx.Config())
 		isLlndk := ctx.isImplementationForLLNDKPublic()
+		currVersion := currRefAbiDumpVersion(ctx, isVndk)
+		library.sAbiOutputFile = transformDumpToLinkedDump(ctx, objs.sAbiDumpFiles, soFile, fileName, exportedHeaderFlags,
+			android.OptionalPathForModuleSrc(ctx, library.symbolFileForAbiCheck(ctx)),
+			headerAbiChecker.Exclude_symbol_versions,
+			headerAbiChecker.Exclude_symbol_tags,
+			currVersion)
+
+		addLsdumpPath(classifySourceAbiDump(ctx) + ":" + library.sAbiOutputFile.String())
+
 		dumpDir := getRefAbiDumpDir(isNdk, isVndk)
 		binderBitness := ctx.DeviceConfig().BinderBitness()
 		// If NDK or PLATFORM library, check against previous version ABI.
@@ -1930,7 +1932,6 @@
 			}
 		}
 		// Check against the current version.
-		currVersion := currRefAbiDumpVersion(ctx, isVndk)
 		currDumpDir := filepath.Join(dumpDir, currVersion, binderBitness)
 		currDumpFile := getRefAbiDumpFile(ctx, currDumpDir, fileName)
 		if currDumpFile.Valid() {
@@ -2195,7 +2196,7 @@
 
 			// do not install vndk libs
 			// vndk libs are packaged into VNDK APEX
-			if ctx.isVndk() && !ctx.IsVndkExt() && !ctx.Config().IsVndkDeprecated() {
+			if ctx.isVndk() && !ctx.IsVndkExt() && !ctx.Config().IsVndkDeprecated() && !ctx.inProduct() {
 				return
 			}
 		} else if library.hasStubsVariants() && !ctx.Host() && ctx.directlyInAnyApex() {
@@ -2861,7 +2862,7 @@
 		Whole_archive_deps:                linkerAttrs.wholeArchiveDeps,
 		Implementation_whole_archive_deps: linkerAttrs.implementationWholeArchiveDeps,
 		System_dynamic_deps:               linkerAttrs.systemDynamicDeps,
-		sdkAttributes:                     bp2BuildParseSdkAttributes(module),
+		SdkAttributes:                     Bp2BuildParseSdkAttributes(module),
 		Runtime_deps:                      linkerAttrs.runtimeDeps,
 		Native_coverage:                   baseAttributes.Native_coverage,
 		Additional_compiler_inputs:        compilerAttrs.additionalCompilerInputs,
diff --git a/cc/library_headers.go b/cc/library_headers.go
index 3f8be46..2e5a195 100644
--- a/cc/library_headers.go
+++ b/cc/library_headers.go
@@ -122,7 +122,7 @@
 	Export_absolute_includes bazel.StringListAttribute
 	Export_system_includes   bazel.StringListAttribute
 	Deps                     bazel.LabelListAttribute
-	sdkAttributes
+	SdkAttributes
 }
 
 func libraryHeadersBp2Build(ctx android.Bp2buildMutatorContext, module *Module) {
@@ -138,7 +138,7 @@
 		Export_system_includes:   exportedIncludes.SystemIncludes,
 		Deps:                     linkerAttrs.deps,
 		Hdrs:                     baseAttributes.hdrs,
-		sdkAttributes:            bp2BuildParseSdkAttributes(module),
+		SdkAttributes:            Bp2BuildParseSdkAttributes(module),
 	}
 
 	props := bazel.BazelTargetModuleProperties{
diff --git a/cc/lto.go b/cc/lto.go
index d48be14..20e4f24 100644
--- a/cc/lto.go
+++ b/cc/lto.go
@@ -147,6 +147,12 @@
 			}
 		}
 
+		// For ML training
+		if ctx.Config().IsEnvTrue("THINLTO_EMIT_INDEXES_AND_IMPORTS") {
+			ltoLdFlags = append(ltoLdFlags, "-Wl,--save-temps=import")
+			ltoLdFlags = append(ltoLdFlags, "-Wl,--thinlto-emit-index-files")
+		}
+
 		flags.Local.CFlags = append(flags.Local.CFlags, ltoCFlags...)
 		flags.Local.AsFlags = append(flags.Local.AsFlags, ltoCFlags...)
 		flags.Local.LdFlags = append(flags.Local.LdFlags, ltoCFlags...)
diff --git a/cc/object.go b/cc/object.go
index a3000e0..d6eb369 100644
--- a/cc/object.go
+++ b/cc/object.go
@@ -151,7 +151,7 @@
 	Stl                 *string
 	Linker_script       bazel.LabelAttribute
 	Crt                 *bool
-	sdkAttributes
+	SdkAttributes
 }
 
 // objectBp2Build is the bp2build converter from cc_object modules to the
@@ -218,7 +218,7 @@
 		Stl:                 compilerAttrs.stl,
 		Linker_script:       linkerScript,
 		Crt:                 m.linker.(*objectLinker).Properties.Crt,
-		sdkAttributes:       bp2BuildParseSdkAttributes(m),
+		SdkAttributes:       Bp2BuildParseSdkAttributes(m),
 	}
 
 	props := bazel.BazelTargetModuleProperties{
diff --git a/cc/vndk.go b/cc/vndk.go
index 5ac5032..a849455 100644
--- a/cc/vndk.go
+++ b/cc/vndk.go
@@ -28,10 +28,12 @@
 	"android/soong/snapshot"
 
 	"github.com/google/blueprint"
+	"github.com/google/blueprint/proptools"
 )
 
 const (
 	llndkLibrariesTxt                = "llndk.libraries.txt"
+	llndkLibrariesTxtForApex         = "llndk.libraries.txt.apex"
 	vndkCoreLibrariesTxt             = "vndkcore.libraries.txt"
 	vndkSpLibrariesTxt               = "vndksp.libraries.txt"
 	vndkPrivateLibrariesTxt          = "vndkprivate.libraries.txt"
@@ -40,6 +42,7 @@
 )
 
 func VndkLibrariesTxtModules(vndkVersion string, ctx android.BaseModuleContext) []string {
+	// Return the list of vndk txt files for the vndk apex of the vndkVersion.
 	if vndkVersion == "current" {
 		// We can assume all txt files are snapshotted if we find one of them.
 		currentVndkSnapshotted := ctx.OtherModuleExists(insertVndkVersion(llndkLibrariesTxt, ctx.DeviceConfig().PlatformVndkVersion()))
@@ -51,20 +54,13 @@
 			vndkVersion = ctx.DeviceConfig().PlatformVndkVersion()
 		} else {
 			// Use the txt files generated from the source
-			result := []string{
+			return []string{
+				llndkLibrariesTxtForApex,
 				vndkCoreLibrariesTxt,
 				vndkSpLibrariesTxt,
 				vndkPrivateLibrariesTxt,
 				vndkProductLibrariesTxt,
 			}
-
-			// TODO(b/290159430) This part will not be required once deprecation
-			// of VNDK is handled with 'ro.vndk.version' property
-			if !ctx.Config().IsVndkDeprecated() {
-				result = append(result, llndkLibrariesTxt)
-			}
-
-			return result
 		}
 	}
 
@@ -451,6 +447,7 @@
 
 func RegisterVndkLibraryTxtTypes(ctx android.RegistrationContext) {
 	ctx.RegisterParallelSingletonModuleType("llndk_libraries_txt", llndkLibrariesTxtFactory)
+	ctx.RegisterParallelSingletonModuleType("llndk_libraries_txt_for_apex", llndkLibrariesTxtApexOnlyFactory)
 	ctx.RegisterParallelSingletonModuleType("vndksp_libraries_txt", vndkSPLibrariesTxtFactory)
 	ctx.RegisterParallelSingletonModuleType("vndkcore_libraries_txt", vndkCoreLibrariesTxtFactory)
 	ctx.RegisterParallelSingletonModuleType("vndkprivate_libraries_txt", vndkPrivateLibrariesTxtFactory)
@@ -474,22 +471,31 @@
 
 type VndkLibrariesTxtProperties struct {
 	Insert_vndk_version *bool
+	Stem                *string
 }
 
 var _ etc.PrebuiltEtcModule = &vndkLibrariesTxt{}
 var _ android.OutputFileProducer = &vndkLibrariesTxt{}
 
 // llndk_libraries_txt is a singleton module whose content is a list of LLNDK libraries
-// generated by Soong but can be referenced by other modules.
-// For example, apex_vndk can depend on these files as prebuilt.
+// generated by Soong.
 // Make uses LLNDK_LIBRARIES to determine which libraries to install.
-// HWASAN is only part of the LL-NDK in builds in which libc depends on HWASAN.
+// HWASAN is only part of the LLNDK in builds in which libc depends on HWASAN.
 // Therefore, by removing the library here, we cause it to only be installed if libc
 // depends on it.
 func llndkLibrariesTxtFactory() android.SingletonModule {
 	return newVndkLibrariesWithMakeVarFilter(llndkLibraries, "LLNDK_LIBRARIES", "libclang_rt.hwasan")
 }
 
+// llndk_libraries_txt_for_apex is a singleton module that provide the same LLNDK libraries list
+// with the llndk_libraries_txt, but skips setting make variable LLNDK_LIBRARIES. So, it must not
+// be used without installing llndk_libraries_txt singleton.
+// We include llndk_libraries_txt by default to install the llndk.libraries.txt file to system/etc.
+// This singleton module is to install the llndk.libraries.<ver>.txt file to vndk apex.
+func llndkLibrariesTxtApexOnlyFactory() android.SingletonModule {
+	return newVndkLibrariesWithMakeVarFilter(llndkLibraries, "", "libclang_rt.hwasan")
+}
+
 // vndksp_libraries_txt is a singleton module whose content is a list of VNDKSP libraries
 // generated by Soong but can be referenced by other modules.
 // For example, apex_vndk can depend on these files as prebuilt.
@@ -557,15 +563,10 @@
 }
 
 func (txt *vndkLibrariesTxt) GenerateAndroidBuildActions(ctx android.ModuleContext) {
-	filename := txt.Name()
+	filename := proptools.StringDefault(txt.properties.Stem, txt.Name())
 
-	shouldInsertVndkVersion := BoolDefault(txt.properties.Insert_vndk_version, true)
-	// llndk.libraries.txt file installed in the system image should not contain version info.
-	if ctx.Config().IsVndkDeprecated() && txt.Name() == llndkLibrariesTxt {
-		shouldInsertVndkVersion = false
-	}
-	if shouldInsertVndkVersion {
-		filename = insertVndkVersion(txt.Name(), ctx.DeviceConfig().PlatformVndkVersion())
+	if Bool(txt.properties.Insert_vndk_version) {
+		filename = insertVndkVersion(filename, ctx.DeviceConfig().PlatformVndkVersion())
 	}
 
 	txt.outputFile = android.PathForModuleOut(ctx, filename).OutputPath
@@ -592,6 +593,10 @@
 }
 
 func (txt *vndkLibrariesTxt) MakeVars(ctx android.MakeVarsContext) {
+	if txt.makeVarName == "" {
+		return
+	}
+
 	filter := func(modules []string, prefix string) []string {
 		if prefix == "" {
 			return modules
diff --git a/cmd/soong_build/main.go b/cmd/soong_build/main.go
index 53f5d80..568a6f8 100644
--- a/cmd/soong_build/main.go
+++ b/cmd/soong_build/main.go
@@ -84,7 +84,7 @@
 	flag.BoolVar(&cmdlineArgs.BazelMode, "bazel-mode", false, "use bazel for analysis of certain modules")
 	flag.BoolVar(&cmdlineArgs.BazelModeStaging, "bazel-mode-staging", false, "use bazel for analysis of certain near-ready modules")
 	flag.BoolVar(&cmdlineArgs.UseBazelProxy, "use-bazel-proxy", false, "communicate with bazel using unix socket proxy instead of spawning subprocesses")
-	flag.BoolVar(&cmdlineArgs.BuildFromSourceStub, "build-from-source-stub", false, "build Java stubs from source files instead of API text files")
+	flag.BoolVar(&cmdlineArgs.BuildFromTextStub, "build-from-text-stub", false, "build Java stubs from API text files instead of source files")
 	flag.BoolVar(&cmdlineArgs.EnsureAllowlistIntegrity, "ensure-allowlist-integrity", false, "verify that allowlisted modules are mixed-built")
 	// Flags that probably shouldn't be flags of soong_build, but we haven't found
 	// the time to remove them yet
@@ -422,6 +422,7 @@
 	metricsDir := availableEnv["LOG_DIR"]
 
 	ctx := newContext(configuration)
+	android.StartBackgroundMetrics(configuration)
 
 	var finalOutputFile string
 
diff --git a/cmd/soong_ui/main.go b/cmd/soong_ui/main.go
index 3b8f4f5..18cba77 100644
--- a/cmd/soong_ui/main.go
+++ b/cmd/soong_ui/main.go
@@ -91,14 +91,6 @@
 		config:      buildActionConfig,
 		stdio:       stdio,
 		run:         runMake,
-	}, {
-		flag:        "--finalize-bazel-metrics",
-		description: "finalize b metrics and upload",
-		config:      build.UploadOnlyConfig,
-		stdio:       stdio,
-		// Finalize-bazel-metrics mode updates metrics files and calls the metrics
-		// uploader. This marks the end of a b invocation.
-		run: finalizeBazelMetrics,
 	},
 }
 
@@ -199,7 +191,6 @@
 	soongMetricsFile := filepath.Join(logsDir, c.logsPrefix+"soong_metrics")
 	rbeMetricsFile := filepath.Join(logsDir, c.logsPrefix+"rbe_metrics.pb")
 	bp2buildMetricsFile := filepath.Join(logsDir, c.logsPrefix+"bp2build_metrics.pb")
-	bazelMetricsFile := filepath.Join(logsDir, c.logsPrefix+"bazel_metrics.pb")
 	soongBuildMetricsFile := filepath.Join(logsDir, c.logsPrefix+"soong_build_metrics.pb")
 
 	metricsFiles := []string{
@@ -207,7 +198,6 @@
 		rbeMetricsFile,           // high level metrics related to remote build execution.
 		bp2buildMetricsFile,      // high level metrics related to bp2build.
 		soongMetricsFile,         // high level metrics related to this build system.
-		bazelMetricsFile,         // high level metrics related to bazel execution
 		soongBuildMetricsFile,    // high level metrics related to soong build(except bp2build)
 		config.BazelMetricsDir(), // directory that contains a set of bazel metrics.
 	}
@@ -247,10 +237,9 @@
 	soongMetricsFile := filepath.Join(logsDir, logsPrefix+"soong_metrics")
 	bp2buildMetricsFile := filepath.Join(logsDir, logsPrefix+"bp2build_metrics.pb")
 	soongBuildMetricsFile := filepath.Join(logsDir, logsPrefix+"soong_build_metrics.pb")
-	bazelMetricsFile := filepath.Join(logsDir, logsPrefix+"bazel_metrics.pb")
 
 	//Delete the stale metrics files
-	staleFileSlice := []string{buildErrorFile, rbeMetricsFile, soongMetricsFile, bp2buildMetricsFile, soongBuildMetricsFile, bazelMetricsFile}
+	staleFileSlice := []string{buildErrorFile, rbeMetricsFile, soongMetricsFile, bp2buildMetricsFile, soongBuildMetricsFile}
 	if err := deleteStaleMetrics(staleFileSlice); err != nil {
 		log.Fatalln(err)
 	}
@@ -701,28 +690,3 @@
 		ctx.Println("Failed to increase file limit:", err)
 	}
 }
-
-func finalizeBazelMetrics(ctx build.Context, config build.Config, args []string) {
-	updateTotalRealTime(ctx, config, args)
-
-	logsDir := config.LogsDir()
-	logsPrefix := config.GetLogsPrefix()
-	bazelMetricsFile := filepath.Join(logsDir, logsPrefix+"bazel_metrics.pb")
-	bazelProfileFile := filepath.Join(logsDir, logsPrefix+"analyzed_bazel_profile.txt")
-	build.ProcessBazelMetrics(bazelProfileFile, bazelMetricsFile, ctx, config)
-}
-func updateTotalRealTime(ctx build.Context, config build.Config, args []string) {
-	soongMetricsFile := filepath.Join(config.LogsDir(), "soong_metrics")
-
-	//read file into proto
-	data, err := os.ReadFile(soongMetricsFile)
-	if err != nil {
-		ctx.Fatal(err)
-	}
-	met := ctx.ContextImpl.Metrics
-
-	err = met.UpdateTotalRealTimeAndNonZeroExit(data, config.BazelExitCode())
-	if err != nil {
-		ctx.Fatal(err)
-	}
-}
diff --git a/genrule/allowlists.go b/genrule/allowlists.go
index b3c662d..b8e4234 100644
--- a/genrule/allowlists.go
+++ b/genrule/allowlists.go
@@ -51,13 +51,6 @@
 
 	SandboxingDenyModuleList = []string{
 		// go/keep-sorted start
-		"AudioFocusControlProtoStub_cc",
-		"AudioFocusControlProtoStub_h",
-		"BlueberryFacadeAndCertGeneratedStub_py",
-		"BlueberryFacadeGeneratedStub_cc",
-		"BlueberryFacadeGeneratedStub_h",
-		"BluetoothGeneratedDumpsysBinarySchema_bfbs",
-		"BluetoothGeneratedDumpsysDataSchema_h",
 		"CompilationTestCases_package-dex-usage",
 		"ControlEnvProxyServerProto_cc",
 		"ControlEnvProxyServerProto_h",
@@ -109,36 +102,12 @@
 		"camera-its",
 		"checkIn-service-stub-lite",
 		"chre_atoms_log.h",
-		"com.android.apex.apkrollback.test.pem",
-		"com.android.apex.apkrollback.test.pubkey",
-		"com.android.apex.cts.shim.debug.pem",
-		"com.android.apex.cts.shim.debug.pubkey",
-		"com.android.apex.cts.shim.pem",
-		"com.android.apex.cts.shim.pubkey",
-		"com.android.apex.cts.shim.v2_no_pb",
-		"com.android.apex.cts.shim.v2_signed_bob",
-		"com.android.apex.cts.shim.v2_signed_bob_rot",
-		"com.android.apex.cts.shim.v2_signed_bob_rot_rollback",
-		"com.android.apex.cts.shim.v2_unsigned_apk_container",
-		"com.android.apex.cts.shim.v3_signed_bob",
-		"com.android.apex.cts.shim.v3_signed_bob_rot",
-		"com.android.apex.cts.shim_not_pre_installed.pem",
-		"com.android.apex.cts.shim_not_pre_installed.pubkey",
-		"com.android.apex.rotation.key.bob.pem",
-		"com.android.apex.rotation.key.bob.pk8",
-		"com.android.apex.rotation.key.bob.rot",
-		"com.android.apex.rotation.key.bob.rot.rollback",
-		"com.android.apex.rotation.key.bob.x509.pem",
 		"com.android.apex.test.bar_stripped",
 		"com.android.apex.test.baz_stripped",
 		"com.android.apex.test.foo_stripped",
 		"com.android.apex.test.pony_stripped",
 		"com.android.apex.test.sharedlibs_generated",
 		"com.android.apex.test.sharedlibs_secondary_generated",
-		"com.android.overlaytest.overlaid.pem",
-		"com.android.overlaytest.overlaid.pubkey",
-		"com.android.overlaytest.overlay.pem",
-		"com.android.overlaytest.overlay.pubkey",
 		"common-profile-text-protos",
 		"core-tests-smali-dex",
 		"cronet_aml_base_android_runtime_jni_headers",
@@ -184,7 +153,6 @@
 		"hidl_java_impl_test_gen",
 		"lib-test-profile-text-protos",
 		"libbssl_sys_src_nostd",
-		"libbt_topshim_facade_py_proto",
 		"libc_musl_sysroot_bits",
 		"libchrome-crypto-include",
 		"libchrome-include",
diff --git a/java/aar.go b/java/aar.go
index c3d4fbe..6b89129 100644
--- a/java/aar.go
+++ b/java/aar.go
@@ -134,6 +134,10 @@
 	resourcesNodesDepSet *android.DepSet[*resourcesNode]
 	rroDirsDepSet        *android.DepSet[rroDir]
 	manifestsDepSet      *android.DepSet[android.Path]
+
+	manifestValues struct {
+		applicationId string
+	}
 }
 
 type split struct {
@@ -380,7 +384,9 @@
 	if len(transitiveManifestPaths) > 1 && !Bool(a.aaptProperties.Dont_merge_manifests) {
 		manifestMergerParams := ManifestMergerParams{
 			staticLibManifests: transitiveManifestPaths[1:],
-			isLibrary:          a.isLibrary}
+			isLibrary:          a.isLibrary,
+			packageName:        a.manifestValues.applicationId,
+		}
 		a.mergedManifestFile = manifestMerger(ctx, transitiveManifestPaths[0], manifestMergerParams)
 		if !a.isLibrary {
 			// Only use the merged manifest for applications.  For libraries, the transitive closure of manifests
diff --git a/java/android_manifest.go b/java/android_manifest.go
index a39c002..082b00e 100644
--- a/java/android_manifest.go
+++ b/java/android_manifest.go
@@ -203,15 +203,21 @@
 type ManifestMergerParams struct {
 	staticLibManifests android.Paths
 	isLibrary          bool
+	packageName        string
 }
 
 func manifestMerger(ctx android.ModuleContext, manifest android.Path,
 	params ManifestMergerParams) android.Path {
 
-	var args string
+	var args []string
 	if !params.isLibrary {
 		// Follow Gradle's behavior, only pass --remove-tools-declarations when merging app manifests.
-		args = "--remove-tools-declarations"
+		args = append(args, "--remove-tools-declarations")
+	}
+
+	packageName := params.packageName
+	if packageName != "" {
+		args = append(args, "--property PACKAGE="+packageName)
 	}
 
 	mergedManifest := android.PathForModuleOut(ctx, "manifest_merger", "AndroidManifest.xml")
@@ -223,7 +229,7 @@
 		Output:      mergedManifest,
 		Args: map[string]string{
 			"libs": android.JoinWithPrefix(params.staticLibManifests.Strings(), "--libs "),
-			"args": args,
+			"args": strings.Join(args, " "),
 		},
 	})
 
diff --git a/java/android_manifest_test.go b/java/android_manifest_test.go
index b12d778..0a39dca 100644
--- a/java/android_manifest_test.go
+++ b/java/android_manifest_test.go
@@ -15,8 +15,9 @@
 package java
 
 import (
-	"android/soong/android"
 	"testing"
+
+	"android/soong/android"
 )
 
 func TestManifestMerger(t *testing.T) {
@@ -101,3 +102,41 @@
 		},
 		manifestMergerRule.Implicits)
 }
+
+func TestManifestValuesApplicationIdSetsPackageName(t *testing.T) {
+	bp := `
+		android_test {
+			name: "test",
+			sdk_version: "current",
+			srcs: ["app/app.java"],
+			manifest: "test/AndroidManifest.xml",
+			additional_manifests: ["test/AndroidManifest2.xml"],
+			static_libs: ["direct"],
+      test_suites: ["device-tests"],
+      manifest_values:  {
+        applicationId: "new_package_name"
+      },
+		}
+
+		android_library {
+			name: "direct",
+			sdk_version: "current",
+			srcs: ["direct/direct.java"],
+			resource_dirs: ["direct/res"],
+			manifest: "direct/AndroidManifest.xml",
+			additional_manifests: ["direct/AndroidManifest2.xml"],
+		}
+
+	`
+
+	result := android.GroupFixturePreparers(
+		PrepareForTestWithJavaDefaultModules,
+		PrepareForTestWithOverlayBuildComponents,
+	).RunTestWithBp(t, bp)
+
+	manifestMergerRule := result.ModuleForTests("test", "android_common").Rule("manifestMerger")
+	android.AssertStringMatches(t,
+		"manifest merger args",
+		manifestMergerRule.Args["args"],
+		"--property PACKAGE=new_package_name")
+}
diff --git a/java/app.go b/java/app.go
index 0cb72e2..7b9e6bb 100755
--- a/java/app.go
+++ b/java/app.go
@@ -308,6 +308,13 @@
 }
 
 func (a *AndroidTestHelperApp) GenerateAndroidBuildActions(ctx android.ModuleContext) {
+	applicationId := a.appTestHelperAppProperties.Manifest_values.ApplicationId
+	if applicationId != nil {
+		if a.overridableAppProperties.Package_name != nil {
+			ctx.PropertyErrorf("manifest_values.applicationId", "property is not supported when property package_name is set.")
+		}
+		a.aapt.manifestValues.applicationId = *applicationId
+	}
 	a.generateAndroidBuildActions(ctx)
 }
 
@@ -1107,6 +1114,12 @@
 	return module
 }
 
+// A dictionary of values to be overridden in the manifest.
+type Manifest_values struct {
+	// Overrides the value of package_name in the manifest
+	ApplicationId *string
+}
+
 type appTestProperties struct {
 	// The name of the android_app module that the tests will run against.
 	Instrumentation_for *string
@@ -1116,6 +1129,8 @@
 
 	// If specified, the mainline module package name in the test config is overwritten by it.
 	Mainline_package_name *string
+
+	Manifest_values Manifest_values
 }
 
 type AndroidTest struct {
@@ -1160,6 +1175,13 @@
 			a.additionalAaptFlags = append(a.additionalAaptFlags, "--rename-instrumentation-target-package "+manifestPackageName)
 		}
 	}
+	applicationId := a.appTestProperties.Manifest_values.ApplicationId
+	if applicationId != nil {
+		if a.overridableAppProperties.Package_name != nil {
+			ctx.PropertyErrorf("manifest_values.applicationId", "property is not supported when property package_name is set.")
+		}
+		a.aapt.manifestValues.applicationId = *applicationId
+	}
 	a.generateAndroidBuildActions(ctx)
 
 	for _, module := range a.testProperties.Test_mainline_modules {
@@ -1264,6 +1286,8 @@
 
 	// Install the test into a folder named for the module in all test suites.
 	Per_testcase_directory *bool
+
+	Manifest_values Manifest_values
 }
 
 type AndroidTestHelperApp struct {
diff --git a/java/base.go b/java/base.go
index 53f22a7..3d7d3de 100644
--- a/java/base.go
+++ b/java/base.go
@@ -1014,8 +1014,16 @@
 	ctx android.ModuleContext, flags javaBuilderFlags, srcFiles android.Paths) javaBuilderFlags {
 	// javac flags.
 	javacFlags := j.properties.Javacflags
+	var needsDebugInfo bool
 
-	if ctx.Config().MinimizeJavaDebugInfo() && !ctx.Host() {
+	needsDebugInfo = false
+	for _, flag := range javacFlags {
+		if strings.HasPrefix(flag, "-g") {
+			needsDebugInfo = true
+		}
+	}
+
+	if ctx.Config().MinimizeJavaDebugInfo() && !ctx.Host() && !needsDebugInfo {
 		// For non-host binaries, override the -g flag passed globally to remove
 		// local variable debug info to reduce disk and memory usage.
 		javacFlags = append(javacFlags, "-g:source,lines")
@@ -1938,19 +1946,22 @@
 		}
 
 		dep := ctx.OtherModuleProvider(module, JavaInfoProvider).(JavaInfo)
-		if dep.TransitiveLibsHeaderJars != nil {
-			transitiveLibs = append(transitiveLibs, dep.TransitiveLibsHeaderJars)
-		}
-		if dep.TransitiveStaticLibsHeaderJars != nil {
-			transitiveStaticLibs = append(transitiveStaticLibs, dep.TransitiveStaticLibsHeaderJars)
-		}
-
 		tag := ctx.OtherModuleDependencyTag(module)
 		_, isUsesLibDep := tag.(usesLibraryDependencyTag)
 		if tag == libTag || tag == r8LibraryJarTag || isUsesLibDep {
 			directLibs = append(directLibs, dep.HeaderJars...)
 		} else if tag == staticLibTag {
 			directStaticLibs = append(directStaticLibs, dep.HeaderJars...)
+		} else {
+			// Don't propagate transitive libs for other kinds of dependencies.
+			return
+		}
+
+		if dep.TransitiveLibsHeaderJars != nil {
+			transitiveLibs = append(transitiveLibs, dep.TransitiveLibsHeaderJars)
+		}
+		if dep.TransitiveStaticLibsHeaderJars != nil {
+			transitiveStaticLibs = append(transitiveStaticLibs, dep.TransitiveStaticLibsHeaderJars)
 		}
 	})
 	j.transitiveLibsHeaderJars = android.NewDepSet(android.POSTORDER, directLibs, transitiveLibs)
diff --git a/java/legacy_core_platform_api_usage.go b/java/legacy_core_platform_api_usage.go
index 6cb549e..4be7d04 100644
--- a/java/legacy_core_platform_api_usage.go
+++ b/java/legacy_core_platform_api_usage.go
@@ -28,6 +28,7 @@
 	"FloralClocks",
 	"framework-jobscheduler",
 	"framework-minus-apex",
+	"framework-minus-apex-headers",
 	"framework-minus-apex-intdefs",
 	"FrameworksCoreTests",
 	"HelloOslo",
diff --git a/java/sdk.go b/java/sdk.go
index 7c702c4..ddd99bb 100644
--- a/java/sdk.go
+++ b/java/sdk.go
@@ -76,7 +76,8 @@
 		// Core is by definition what is included in the system module for the public API so should
 		// just use its system modules.
 		systemModuleKind = android.SdkPublic
-	} else if systemModuleKind == android.SdkSystem || systemModuleKind == android.SdkTest {
+	} else if systemModuleKind == android.SdkSystem || systemModuleKind == android.SdkTest ||
+		systemModuleKind == android.SdkTestFrameworksCore {
 		// The core system and test APIs are currently the same as the public API so they should use
 		// its system modules.
 		systemModuleKind = android.SdkPublic
@@ -192,7 +193,7 @@
 			bootclasspath:    corePlatformBootclasspathLibraries(ctx),
 			noFrameworksLibs: true,
 		}
-	case android.SdkPublic, android.SdkSystem, android.SdkTest:
+	case android.SdkPublic, android.SdkSystem, android.SdkTest, android.SdkTestFrameworksCore:
 		return toModule(sdkVersion.Kind.DefaultJavaLibraryName(), sdkFrameworkAidlPath(ctx))
 	case android.SdkCore:
 		return sdkDep{
diff --git a/java/sdk_library.go b/java/sdk_library.go
index 041aeb7..7807889 100644
--- a/java/sdk_library.go
+++ b/java/sdk_library.go
@@ -470,6 +470,9 @@
 	// or the API file. They both have to use the same sdk_version as is used for
 	// compiling the implementation library.
 	Sdk_version *string
+
+	// Extra libs used when compiling stubs for this scope.
+	Libs []string
 }
 
 type sdkLibraryProperties struct {
@@ -1653,6 +1656,7 @@
 	props.Patch_module = module.properties.Patch_module
 	props.Installable = proptools.BoolPtr(false)
 	props.Libs = module.sdkLibraryProperties.Stub_only_libs
+	props.Libs = append(props.Libs, module.scopeToProperties[apiScope].Libs...)
 	props.Static_libs = module.sdkLibraryProperties.Stub_only_static_libs
 	// The stub-annotations library contains special versions of the annotations
 	// with CLASS retention policy, so that they're kept.
@@ -1725,6 +1729,7 @@
 	props.Libs = module.properties.Libs
 	props.Libs = append(props.Libs, module.properties.Static_libs...)
 	props.Libs = append(props.Libs, module.sdkLibraryProperties.Stub_only_libs...)
+	props.Libs = append(props.Libs, module.scopeToProperties[apiScope].Libs...)
 	props.Aidl.Include_dirs = module.deviceProperties.Aidl.Include_dirs
 	props.Aidl.Local_include_dirs = module.deviceProperties.Aidl.Local_include_dirs
 	props.Java_version = module.properties.Java_version
@@ -1746,11 +1751,9 @@
 		"BroadcastBehavior",
 		"DeprecationMismatch",
 		"HiddenSuperclass",
-		"HiddenTypeParameter",
 		"MissingPermission",
 		"SdkConstant",
 		"Todo",
-		"UnavailableSymbol",
 	}
 	droidstubsArgs = append(droidstubsArgs, android.JoinWithPrefix(disabledWarnings, "--hide "))
 
@@ -1864,6 +1867,7 @@
 	props.Api_contributions = apiContributions
 	props.Libs = module.properties.Libs
 	props.Libs = append(props.Libs, module.sdkLibraryProperties.Stub_only_libs...)
+	props.Libs = append(props.Libs, module.scopeToProperties[apiScope].Libs...)
 	props.Libs = append(props.Libs, "stub-annotations")
 	props.Static_libs = module.sdkLibraryProperties.Stub_only_static_libs
 	props.Full_api_surface_stub = proptools.StringPtr(apiScope.kind.DefaultJavaLibraryName())
diff --git a/java/sdk_library_test.go b/java/sdk_library_test.go
index 0b46919..21f0bab 100644
--- a/java/sdk_library_test.go
+++ b/java/sdk_library_test.go
@@ -1421,6 +1421,32 @@
 	android.AssertStringListContains(t, "foo stubs should depend on bar-lib", fooStubsSources.Javadoc.properties.Libs, "bar-lib")
 }
 
+func TestJavaSdkLibrary_Scope_Libs_PassedToDroidstubs(t *testing.T) {
+	result := android.GroupFixturePreparers(
+		prepareForJavaTest,
+		PrepareForTestWithJavaSdkLibraryFiles,
+		FixtureWithLastReleaseApis("foo"),
+	).RunTestWithBp(t, `
+		java_sdk_library {
+			name: "foo",
+			srcs: ["a.java"],
+			public: {
+				enabled: true,
+				libs: ["bar-lib"],
+			},
+		}
+
+		java_library {
+			name: "bar-lib",
+			srcs: ["b.java"],
+		}
+		`)
+
+	// The foo.stubs.source should depend on bar-lib
+	fooStubsSources := result.ModuleForTests("foo.stubs.source", "android_common").Module().(*Droidstubs)
+	android.AssertStringListContains(t, "foo stubs should depend on bar-lib", fooStubsSources.Javadoc.properties.Libs, "bar-lib")
+}
+
 func TestJavaSdkLibrary_ApiLibrary(t *testing.T) {
 	result := android.GroupFixturePreparers(
 		prepareForJavaTest,
diff --git a/rust/builder.go b/rust/builder.go
index fe2d03a..72e5be1 100644
--- a/rust/builder.go
+++ b/rust/builder.go
@@ -238,6 +238,10 @@
 		}
 	}
 
+	if ctx.Darwin() {
+		envVars = append(envVars, "ANDROID_RUST_DARWIN=true")
+	}
+
 	return envVars
 }
 
@@ -346,19 +350,6 @@
 		implicits = append(implicits, outputs.Paths()...)
 	}
 
-	envVars = append(envVars, "ANDROID_RUST_VERSION="+config.GetRustVersion(ctx))
-
-	if ctx.RustModule().compiler.CargoEnvCompat() {
-		if _, ok := ctx.RustModule().compiler.(*binaryDecorator); ok {
-			envVars = append(envVars, "CARGO_BIN_NAME="+strings.TrimSuffix(outputFile.Base(), outputFile.Ext()))
-		}
-		envVars = append(envVars, "CARGO_CRATE_NAME="+ctx.RustModule().CrateName())
-		pkgVersion := ctx.RustModule().compiler.CargoPkgVersion()
-		if pkgVersion != "" {
-			envVars = append(envVars, "CARGO_PKG_VERSION="+pkgVersion)
-		}
-	}
-
 	if flags.Clippy {
 		clippyFile := android.PathForModuleOut(ctx, outputFile.Base()+".clippy")
 		ctx.Build(pctx, android.BuildParams{
diff --git a/rust/config/global.go b/rust/config/global.go
index 4d31121..64c9460 100644
--- a/rust/config/global.go
+++ b/rust/config/global.go
@@ -25,7 +25,7 @@
 	pctx         = android.NewPackageContext("android/soong/rust/config")
 	ExportedVars = android.NewExportedVariables(pctx)
 
-	RustDefaultVersion = "1.72.0"
+	RustDefaultVersion = "1.72.1"
 	RustDefaultBase    = "prebuilts/rust/"
 	DefaultEdition     = "2021"
 	Stdlibs            = []string{
diff --git a/sysprop/sysprop_library.go b/sysprop/sysprop_library.go
index 13cf68f..fe2cc9c 100644
--- a/sysprop/sysprop_library.go
+++ b/sysprop/sysprop_library.go
@@ -172,6 +172,12 @@
 		// Minimum sdk version that the artifact should support when it runs as part of mainline modules(APEX).
 		// Forwarded to cc_library.min_sdk_version
 		Min_sdk_version *string
+
+		// C compiler flags used to build library
+		Cflags []string
+
+		// Linker flags used to build binary
+		Ldflags []string
 	}
 
 	Java struct {
@@ -416,6 +422,8 @@
 	Host_supported     *bool
 	Apex_available     []string
 	Min_sdk_version    *string
+	Cflags             []string
+	Ldflags            []string
 	Bazel_module       struct {
 		Label *string
 	}
@@ -511,6 +519,8 @@
 	ccProps.Host_supported = m.properties.Host_supported
 	ccProps.Apex_available = m.ApexProperties.Apex_available
 	ccProps.Min_sdk_version = m.properties.Cpp.Min_sdk_version
+	ccProps.Cflags = m.properties.Cpp.Cflags
+	ccProps.Ldflags = m.properties.Cpp.Ldflags
 	ccProps.Bazel_module.Label = label
 	ctx.CreateModule(cc.LibraryFactory, &ccProps)
 
diff --git a/ui/build/config.go b/ui/build/config.go
index eae379f..5cf6ea8 100644
--- a/ui/build/config.go
+++ b/ui/build/config.go
@@ -85,7 +85,7 @@
 	searchApiDir             bool // Scan the Android.bp files generated in out/api_surfaces
 	skipMetricsUpload        bool
 	buildStartedTime         int64 // For metrics-upload-only - manually specify a build-started time
-	buildFromSourceStub      bool
+	buildFromTextStub        bool
 	ensureAllowlistIntegrity bool   // For CI builds - make sure modules are mixed-built
 	bazelExitCode            int32  // For b runs - necessary for updating NonZeroExit
 	besId                    string // For b runs, to identify the BuildEventService logs
@@ -205,34 +205,6 @@
 	return nil
 }
 
-func defaultBazelProdMode(cfg *configImpl) bool {
-	// Environment flag to disable Bazel for users which experience
-	// broken bazel-handled builds, or significant performance regressions.
-	if cfg.IsBazelMixedBuildForceDisabled() {
-		return false
-	}
-	// Darwin-host builds are currently untested with Bazel.
-	if runtime.GOOS == "darwin" {
-		return false
-	}
-	return true
-}
-
-func UploadOnlyConfig(ctx Context, args ...string) Config {
-	ret := &configImpl{
-		environ:       OsEnvironment(),
-		sandboxConfig: &SandboxConfig{},
-	}
-	ret.parseArgs(ctx, args)
-	srcDir := absPath(ctx, ".")
-	bc := os.Getenv("ANDROID_BUILD_ENVIRONMENT_CONFIG")
-	if err := loadEnvConfig(ctx, ret, bc); err != nil {
-		ctx.Fatalln("Failed to parse env config files: %v", err)
-	}
-	ret.metricsUploader = GetMetricsUploader(srcDir, ret.environ)
-	return Config{ret}
-}
-
 func NewConfig(ctx Context, args ...string) Config {
 	ret := &configImpl{
 		environ:               OsEnvironment(),
@@ -240,6 +212,11 @@
 		ninjaWeightListSource: DEFAULT,
 	}
 
+	// Skip soong tests by default on Linux
+	if runtime.GOOS == "linux" {
+		ret.skipSoongTests = true
+	}
+
 	// Default matching ninja
 	ret.parallel = runtime.NumCPU() + 2
 	ret.keepGoing = 1
@@ -772,6 +749,8 @@
 			c.skipConfig = true
 		} else if arg == "--skip-soong-tests" {
 			c.skipSoongTests = true
+		} else if arg == "--no-skip-soong-tests" {
+			c.skipSoongTests = false
 		} else if arg == "--skip-metrics-upload" {
 			c.skipMetricsUpload = true
 		} else if arg == "--mk-metrics" {
@@ -808,8 +787,8 @@
 			} else {
 				ctx.Fatalf("unknown option for ninja_weight_source: %s", source)
 			}
-		} else if arg == "--build-from-source-stub" {
-			c.buildFromSourceStub = true
+		} else if arg == "--build-from-text-stub" {
+			c.buildFromTextStub = true
 		} else if strings.HasPrefix(arg, "--build-command=") {
 			buildCmd := strings.TrimPrefix(arg, "--build-command=")
 			// remove quotations
@@ -828,16 +807,6 @@
 			}
 		} else if arg == "--ensure-allowlist-integrity" {
 			c.ensureAllowlistIntegrity = true
-		} else if strings.HasPrefix(arg, "--bazel-exit-code=") {
-			bazelExitCodeStr := strings.TrimPrefix(arg, "--bazel-exit-code=")
-			val, err := strconv.Atoi(bazelExitCodeStr)
-			if err == nil {
-				c.bazelExitCode = int32(val)
-			} else {
-				ctx.Fatalf("Error parsing bazel-exit-code", err)
-			}
-		} else if strings.HasPrefix(arg, "--bes-id=") {
-			c.besId = strings.TrimPrefix(arg, "--bes-id=")
 		} else if len(arg) > 0 && arg[0] == '-' {
 			parseArgNum := func(def int) int {
 				if len(arg) > 2 {
@@ -885,9 +854,6 @@
 			c.arguments = append(c.arguments, arg)
 		}
 	}
-	if (!c.bazelProdMode) && (!c.bazelStagingMode) {
-		c.bazelProdMode = defaultBazelProdMode(c)
-	}
 }
 
 func validateNinjaWeightList(weightListFilePath string) (err error) {
@@ -1157,7 +1123,7 @@
 }
 
 func (c *configImpl) BuildFromTextStub() bool {
-	return !c.buildFromSourceStub
+	return c.buildFromTextStub
 }
 
 func (c *configImpl) TargetProduct() string {
@@ -1563,6 +1529,10 @@
 	return filepath.Join(c.SoongOutDir(), "make_vars-"+c.TargetProduct()+".mk")
 }
 
+func (c *configImpl) SoongBuildMetrics() string {
+	return filepath.Join(c.OutDir(), "soong_build_metrics.pb")
+}
+
 func (c *configImpl) ProductOut() string {
 	return filepath.Join(c.OutDir(), "target", "product", c.TargetDevice())
 }
diff --git a/ui/build/soong.go b/ui/build/soong.go
index 18eee75..abdfeda 100644
--- a/ui/build/soong.go
+++ b/ui/build/soong.go
@@ -15,6 +15,7 @@
 package build
 
 import (
+	"android/soong/ui/tracer"
 	"fmt"
 	"io/fs"
 	"os"
@@ -23,9 +24,11 @@
 	"strings"
 	"sync"
 	"sync/atomic"
+	"time"
 
 	"android/soong/bazel"
 	"android/soong/ui/metrics"
+	"android/soong/ui/metrics/metrics_proto"
 	"android/soong/ui/status"
 
 	"android/soong/shared"
@@ -33,6 +36,8 @@
 	"github.com/google/blueprint"
 	"github.com/google/blueprint/bootstrap"
 	"github.com/google/blueprint/microfactory"
+
+	"google.golang.org/protobuf/proto"
 )
 
 const (
@@ -188,8 +193,8 @@
 	if pb.config.multitreeBuild {
 		commonArgs = append(commonArgs, "--multitree-build")
 	}
-	if pb.config.buildFromSourceStub {
-		commonArgs = append(commonArgs, "--build-from-source-stub")
+	if pb.config.buildFromTextStub {
+		commonArgs = append(commonArgs, "--build-from-text-stub")
 	}
 
 	commonArgs = append(commonArgs, "-l", filepath.Join(pb.config.FileListDir(), "Android.bp.list"))
@@ -305,8 +310,8 @@
 	if config.MultitreeBuild() {
 		mainSoongBuildExtraArgs = append(mainSoongBuildExtraArgs, "--multitree-build")
 	}
-	if config.buildFromSourceStub {
-		mainSoongBuildExtraArgs = append(mainSoongBuildExtraArgs, "--build-from-source-stub")
+	if config.buildFromTextStub {
+		mainSoongBuildExtraArgs = append(mainSoongBuildExtraArgs, "--build-from-text-stub")
 	}
 	if config.ensureAllowlistIntegrity {
 		mainSoongBuildExtraArgs = append(mainSoongBuildExtraArgs, "--ensure-allowlist-integrity")
@@ -627,6 +632,10 @@
 
 		if config.BazelBuildEnabled() || config.Bp2Build() {
 			checkEnvironmentFile(ctx, soongBuildEnv, config.UsedEnvFile(bp2buildFilesTag))
+		} else {
+			// Remove bazel files in the event that bazel is disabled for the build.
+			// These files may have been left over from a previous bazel-enabled build.
+			cleanBazelFiles(config)
 		}
 
 		if config.JsonModuleGraph() {
@@ -717,8 +726,12 @@
 		targets = append(targets, config.SoongNinjaFile())
 	}
 
+	beforeSoongTimestamp := time.Now()
+
 	ninja(targets...)
 
+	loadSoongBuildMetrics(ctx, config, beforeSoongTimestamp)
+
 	distGzipFile(ctx, config, config.SoongNinjaFile(), "soong")
 	distFile(ctx, config, config.SoongVarsFile(), "soong")
 
@@ -732,6 +745,67 @@
 	}
 }
 
+// loadSoongBuildMetrics reads out/soong_build_metrics.pb if it was generated by soong_build and copies the
+// events stored in it into the soong_ui trace to provide introspection into how long the different phases of
+// soong_build are taking.
+func loadSoongBuildMetrics(ctx Context, config Config, oldTimestamp time.Time) {
+	soongBuildMetricsFile := config.SoongBuildMetrics()
+	if metricsStat, err := os.Stat(soongBuildMetricsFile); err != nil {
+		ctx.Verbosef("Failed to stat %s: %s", soongBuildMetricsFile, err)
+		return
+	} else if !metricsStat.ModTime().After(oldTimestamp) {
+		ctx.Verbosef("%s timestamp not later after running soong, expected %s > %s",
+			soongBuildMetricsFile, metricsStat.ModTime(), oldTimestamp)
+		return
+	}
+
+	metricsData, err := os.ReadFile(config.SoongBuildMetrics())
+	if err != nil {
+		ctx.Verbosef("Failed to read %s: %s", soongBuildMetricsFile, err)
+		return
+	}
+
+	soongBuildMetrics := metrics_proto.SoongBuildMetrics{}
+	err = proto.Unmarshal(metricsData, &soongBuildMetrics)
+	if err != nil {
+		ctx.Verbosef("Failed to unmarshal %s: %s", soongBuildMetricsFile, err)
+		return
+	}
+	for _, event := range soongBuildMetrics.Events {
+		desc := event.GetDescription()
+		if dot := strings.LastIndexByte(desc, '.'); dot >= 0 {
+			desc = desc[dot+1:]
+		}
+		ctx.Tracer.Complete(desc, ctx.Thread,
+			event.GetStartTime(), event.GetStartTime()+event.GetRealTime())
+	}
+	for _, event := range soongBuildMetrics.PerfCounters {
+		timestamp := event.GetTime()
+		for _, group := range event.Groups {
+			counters := make([]tracer.Counter, 0, len(group.Counters))
+			for _, counter := range group.Counters {
+				counters = append(counters, tracer.Counter{
+					Name:  counter.GetName(),
+					Value: counter.GetValue(),
+				})
+			}
+			ctx.Tracer.CountersAtTime(group.GetName(), ctx.Thread, timestamp, counters)
+		}
+	}
+}
+
+func cleanBazelFiles(config Config) {
+	files := []string{
+		shared.JoinPath(config.SoongOutDir(), "bp2build"),
+		shared.JoinPath(config.SoongOutDir(), "workspace"),
+		shared.JoinPath(config.SoongOutDir(), bazel.SoongInjectionDirName),
+		shared.JoinPath(config.OutDir(), "bazel")}
+
+	for _, f := range files {
+		os.RemoveAll(f)
+	}
+}
+
 func runMicrofactory(ctx Context, config Config, name string, pkg string, mapping map[string]string) {
 	ctx.BeginTrace(metrics.RunSoong, name)
 	defer ctx.EndTrace()
diff --git a/ui/metrics/metrics.go b/ui/metrics/metrics.go
index d68ced8..4a275a8 100644
--- a/ui/metrics/metrics.go
+++ b/ui/metrics/metrics.go
@@ -32,7 +32,6 @@
 // of what an event is and how the metrics system is a stack based system.
 
 import (
-	"fmt"
 	"os"
 	"runtime"
 	"strings"
@@ -228,20 +227,6 @@
 	m.metrics.BuildDateTimestamp = proto.Int64(buildTimestamp.UnixNano() / int64(time.Second))
 }
 
-func (m *Metrics) UpdateTotalRealTimeAndNonZeroExit(data []byte, bazelExitCode int32) error {
-	if err := proto.Unmarshal(data, &m.metrics); err != nil {
-		return fmt.Errorf("Failed to unmarshal proto: %w", err)
-	}
-	startTime := *m.metrics.Total.StartTime
-	endTime := uint64(time.Now().UnixNano())
-
-	*m.metrics.Total.RealTime = *proto.Uint64(endTime - startTime)
-
-	bazelError := bazelExitCode != 0
-	m.metrics.NonZeroExit = proto.Bool(bazelError)
-	return nil
-}
-
 // SetBuildCommand adds the build command specified by the user to the
 // list of collected metrics.
 func (m *Metrics) SetBuildCommand(cmd []string) {
diff --git a/ui/metrics/metrics_proto/metrics.pb.go b/ui/metrics/metrics_proto/metrics.pb.go
index f3e677a..b75f572 100644
--- a/ui/metrics/metrics_proto/metrics.pb.go
+++ b/ui/metrics/metrics_proto/metrics.pb.go
@@ -279,7 +279,7 @@
 
 // Deprecated: Use ModuleTypeInfo_BuildSystem.Descriptor instead.
 func (ModuleTypeInfo_BuildSystem) EnumDescriptor() ([]byte, []int) {
-	return file_metrics_proto_rawDescGZIP(), []int{5, 0}
+	return file_metrics_proto_rawDescGZIP(), []int{8, 0}
 }
 
 type ExpConfigFetcher_ConfigStatus int32
@@ -341,7 +341,7 @@
 
 // Deprecated: Use ExpConfigFetcher_ConfigStatus.Descriptor instead.
 func (ExpConfigFetcher_ConfigStatus) EnumDescriptor() ([]byte, []int) {
-	return file_metrics_proto_rawDescGZIP(), []int{9, 0}
+	return file_metrics_proto_rawDescGZIP(), []int{12, 0}
 }
 
 type MetricsBase struct {
@@ -999,6 +999,177 @@
 	return ""
 }
 
+type PerfCounters struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The timestamp of these counters in nanoseconds.
+	Time *uint64 `protobuf:"varint,1,opt,name=time" json:"time,omitempty"`
+	// A list of counter names and values.
+	Groups []*PerfCounterGroup `protobuf:"bytes,2,rep,name=groups" json:"groups,omitempty"`
+}
+
+func (x *PerfCounters) Reset() {
+	*x = PerfCounters{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_metrics_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PerfCounters) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PerfCounters) ProtoMessage() {}
+
+func (x *PerfCounters) ProtoReflect() protoreflect.Message {
+	mi := &file_metrics_proto_msgTypes[4]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use PerfCounters.ProtoReflect.Descriptor instead.
+func (*PerfCounters) Descriptor() ([]byte, []int) {
+	return file_metrics_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *PerfCounters) GetTime() uint64 {
+	if x != nil && x.Time != nil {
+		return *x.Time
+	}
+	return 0
+}
+
+func (x *PerfCounters) GetGroups() []*PerfCounterGroup {
+	if x != nil {
+		return x.Groups
+	}
+	return nil
+}
+
+type PerfCounterGroup struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The name of this counter group (e.g. "cpu" or "memory")
+	Name *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	// The counters in this group
+	Counters []*PerfCounter `protobuf:"bytes,2,rep,name=counters" json:"counters,omitempty"`
+}
+
+func (x *PerfCounterGroup) Reset() {
+	*x = PerfCounterGroup{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_metrics_proto_msgTypes[5]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PerfCounterGroup) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PerfCounterGroup) ProtoMessage() {}
+
+func (x *PerfCounterGroup) ProtoReflect() protoreflect.Message {
+	mi := &file_metrics_proto_msgTypes[5]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use PerfCounterGroup.ProtoReflect.Descriptor instead.
+func (*PerfCounterGroup) Descriptor() ([]byte, []int) {
+	return file_metrics_proto_rawDescGZIP(), []int{5}
+}
+
+func (x *PerfCounterGroup) GetName() string {
+	if x != nil && x.Name != nil {
+		return *x.Name
+	}
+	return ""
+}
+
+func (x *PerfCounterGroup) GetCounters() []*PerfCounter {
+	if x != nil {
+		return x.Counters
+	}
+	return nil
+}
+
+type PerfCounter struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The name of this counter.
+	Name *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	// The value of this counter.
+	Value *int64 `protobuf:"varint,2,opt,name=value" json:"value,omitempty"`
+}
+
+func (x *PerfCounter) Reset() {
+	*x = PerfCounter{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_metrics_proto_msgTypes[6]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PerfCounter) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PerfCounter) ProtoMessage() {}
+
+func (x *PerfCounter) ProtoReflect() protoreflect.Message {
+	mi := &file_metrics_proto_msgTypes[6]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use PerfCounter.ProtoReflect.Descriptor instead.
+func (*PerfCounter) Descriptor() ([]byte, []int) {
+	return file_metrics_proto_rawDescGZIP(), []int{6}
+}
+
+func (x *PerfCounter) GetName() string {
+	if x != nil && x.Name != nil {
+		return *x.Name
+	}
+	return ""
+}
+
+func (x *PerfCounter) GetValue() int64 {
+	if x != nil && x.Value != nil {
+		return *x.Value
+	}
+	return 0
+}
+
 type ProcessResourceInfo struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1029,7 +1200,7 @@
 func (x *ProcessResourceInfo) Reset() {
 	*x = ProcessResourceInfo{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_metrics_proto_msgTypes[4]
+		mi := &file_metrics_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1042,7 +1213,7 @@
 func (*ProcessResourceInfo) ProtoMessage() {}
 
 func (x *ProcessResourceInfo) ProtoReflect() protoreflect.Message {
-	mi := &file_metrics_proto_msgTypes[4]
+	mi := &file_metrics_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1055,7 +1226,7 @@
 
 // Deprecated: Use ProcessResourceInfo.ProtoReflect.Descriptor instead.
 func (*ProcessResourceInfo) Descriptor() ([]byte, []int) {
-	return file_metrics_proto_rawDescGZIP(), []int{4}
+	return file_metrics_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *ProcessResourceInfo) GetName() string {
@@ -1149,7 +1320,7 @@
 func (x *ModuleTypeInfo) Reset() {
 	*x = ModuleTypeInfo{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_metrics_proto_msgTypes[5]
+		mi := &file_metrics_proto_msgTypes[8]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1162,7 +1333,7 @@
 func (*ModuleTypeInfo) ProtoMessage() {}
 
 func (x *ModuleTypeInfo) ProtoReflect() protoreflect.Message {
-	mi := &file_metrics_proto_msgTypes[5]
+	mi := &file_metrics_proto_msgTypes[8]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1175,7 +1346,7 @@
 
 // Deprecated: Use ModuleTypeInfo.ProtoReflect.Descriptor instead.
 func (*ModuleTypeInfo) Descriptor() ([]byte, []int) {
-	return file_metrics_proto_rawDescGZIP(), []int{5}
+	return file_metrics_proto_rawDescGZIP(), []int{8}
 }
 
 func (x *ModuleTypeInfo) GetBuildSystem() ModuleTypeInfo_BuildSystem {
@@ -1213,7 +1384,7 @@
 func (x *CriticalUserJourneyMetrics) Reset() {
 	*x = CriticalUserJourneyMetrics{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_metrics_proto_msgTypes[6]
+		mi := &file_metrics_proto_msgTypes[9]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1226,7 +1397,7 @@
 func (*CriticalUserJourneyMetrics) ProtoMessage() {}
 
 func (x *CriticalUserJourneyMetrics) ProtoReflect() protoreflect.Message {
-	mi := &file_metrics_proto_msgTypes[6]
+	mi := &file_metrics_proto_msgTypes[9]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1239,7 +1410,7 @@
 
 // Deprecated: Use CriticalUserJourneyMetrics.ProtoReflect.Descriptor instead.
 func (*CriticalUserJourneyMetrics) Descriptor() ([]byte, []int) {
-	return file_metrics_proto_rawDescGZIP(), []int{6}
+	return file_metrics_proto_rawDescGZIP(), []int{9}
 }
 
 func (x *CriticalUserJourneyMetrics) GetName() string {
@@ -1268,7 +1439,7 @@
 func (x *CriticalUserJourneysMetrics) Reset() {
 	*x = CriticalUserJourneysMetrics{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_metrics_proto_msgTypes[7]
+		mi := &file_metrics_proto_msgTypes[10]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1281,7 +1452,7 @@
 func (*CriticalUserJourneysMetrics) ProtoMessage() {}
 
 func (x *CriticalUserJourneysMetrics) ProtoReflect() protoreflect.Message {
-	mi := &file_metrics_proto_msgTypes[7]
+	mi := &file_metrics_proto_msgTypes[10]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1294,7 +1465,7 @@
 
 // Deprecated: Use CriticalUserJourneysMetrics.ProtoReflect.Descriptor instead.
 func (*CriticalUserJourneysMetrics) Descriptor() ([]byte, []int) {
-	return file_metrics_proto_rawDescGZIP(), []int{7}
+	return file_metrics_proto_rawDescGZIP(), []int{10}
 }
 
 func (x *CriticalUserJourneysMetrics) GetCujs() []*CriticalUserJourneyMetrics {
@@ -1323,12 +1494,14 @@
 	Events []*PerfInfo `protobuf:"bytes,6,rep,name=events" json:"events,omitempty"`
 	// Mixed Builds information
 	MixedBuildsInfo *MixedBuildsInfo `protobuf:"bytes,7,opt,name=mixed_builds_info,json=mixedBuildsInfo" json:"mixed_builds_info,omitempty"`
+	// Performance during for soong_build execution.
+	PerfCounters []*PerfCounters `protobuf:"bytes,8,rep,name=perf_counters,json=perfCounters" json:"perf_counters,omitempty"`
 }
 
 func (x *SoongBuildMetrics) Reset() {
 	*x = SoongBuildMetrics{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_metrics_proto_msgTypes[8]
+		mi := &file_metrics_proto_msgTypes[11]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1341,7 +1514,7 @@
 func (*SoongBuildMetrics) ProtoMessage() {}
 
 func (x *SoongBuildMetrics) ProtoReflect() protoreflect.Message {
-	mi := &file_metrics_proto_msgTypes[8]
+	mi := &file_metrics_proto_msgTypes[11]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1354,7 +1527,7 @@
 
 // Deprecated: Use SoongBuildMetrics.ProtoReflect.Descriptor instead.
 func (*SoongBuildMetrics) Descriptor() ([]byte, []int) {
-	return file_metrics_proto_rawDescGZIP(), []int{8}
+	return file_metrics_proto_rawDescGZIP(), []int{11}
 }
 
 func (x *SoongBuildMetrics) GetModules() uint32 {
@@ -1406,6 +1579,13 @@
 	return nil
 }
 
+func (x *SoongBuildMetrics) GetPerfCounters() []*PerfCounters {
+	if x != nil {
+		return x.PerfCounters
+	}
+	return nil
+}
+
 type ExpConfigFetcher struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1425,7 +1605,7 @@
 func (x *ExpConfigFetcher) Reset() {
 	*x = ExpConfigFetcher{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_metrics_proto_msgTypes[9]
+		mi := &file_metrics_proto_msgTypes[12]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1438,7 +1618,7 @@
 func (*ExpConfigFetcher) ProtoMessage() {}
 
 func (x *ExpConfigFetcher) ProtoReflect() protoreflect.Message {
-	mi := &file_metrics_proto_msgTypes[9]
+	mi := &file_metrics_proto_msgTypes[12]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1451,7 +1631,7 @@
 
 // Deprecated: Use ExpConfigFetcher.ProtoReflect.Descriptor instead.
 func (*ExpConfigFetcher) Descriptor() ([]byte, []int) {
-	return file_metrics_proto_rawDescGZIP(), []int{9}
+	return file_metrics_proto_rawDescGZIP(), []int{12}
 }
 
 func (x *ExpConfigFetcher) GetStatus() ExpConfigFetcher_ConfigStatus {
@@ -1489,7 +1669,7 @@
 func (x *MixedBuildsInfo) Reset() {
 	*x = MixedBuildsInfo{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_metrics_proto_msgTypes[10]
+		mi := &file_metrics_proto_msgTypes[13]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1502,7 +1682,7 @@
 func (*MixedBuildsInfo) ProtoMessage() {}
 
 func (x *MixedBuildsInfo) ProtoReflect() protoreflect.Message {
-	mi := &file_metrics_proto_msgTypes[10]
+	mi := &file_metrics_proto_msgTypes[13]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1515,7 +1695,7 @@
 
 // Deprecated: Use MixedBuildsInfo.ProtoReflect.Descriptor instead.
 func (*MixedBuildsInfo) Descriptor() ([]byte, []int) {
-	return file_metrics_proto_rawDescGZIP(), []int{10}
+	return file_metrics_proto_rawDescGZIP(), []int{13}
 }
 
 func (x *MixedBuildsInfo) GetMixedBuildEnabledModules() []string {
@@ -1552,7 +1732,7 @@
 func (x *CriticalPathInfo) Reset() {
 	*x = CriticalPathInfo{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_metrics_proto_msgTypes[11]
+		mi := &file_metrics_proto_msgTypes[14]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1565,7 +1745,7 @@
 func (*CriticalPathInfo) ProtoMessage() {}
 
 func (x *CriticalPathInfo) ProtoReflect() protoreflect.Message {
-	mi := &file_metrics_proto_msgTypes[11]
+	mi := &file_metrics_proto_msgTypes[14]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1578,7 +1758,7 @@
 
 // Deprecated: Use CriticalPathInfo.ProtoReflect.Descriptor instead.
 func (*CriticalPathInfo) Descriptor() ([]byte, []int) {
-	return file_metrics_proto_rawDescGZIP(), []int{11}
+	return file_metrics_proto_rawDescGZIP(), []int{14}
 }
 
 func (x *CriticalPathInfo) GetElapsedTimeMicros() uint64 {
@@ -1623,7 +1803,7 @@
 func (x *JobInfo) Reset() {
 	*x = JobInfo{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_metrics_proto_msgTypes[12]
+		mi := &file_metrics_proto_msgTypes[15]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1636,7 +1816,7 @@
 func (*JobInfo) ProtoMessage() {}
 
 func (x *JobInfo) ProtoReflect() protoreflect.Message {
-	mi := &file_metrics_proto_msgTypes[12]
+	mi := &file_metrics_proto_msgTypes[15]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1649,7 +1829,7 @@
 
 // Deprecated: Use JobInfo.ProtoReflect.Descriptor instead.
 func (*JobInfo) Descriptor() ([]byte, []int) {
-	return file_metrics_proto_rawDescGZIP(), []int{12}
+	return file_metrics_proto_rawDescGZIP(), []int{15}
 }
 
 func (x *JobInfo) GetElapsedTimeMicros() uint64 {
@@ -1856,132 +2036,153 @@
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 }
 
 var (
@@ -1997,7 +2198,7 @@
 }
 
 var file_metrics_proto_enumTypes = make([]protoimpl.EnumInfo, 5)
-var file_metrics_proto_msgTypes = make([]protoimpl.MessageInfo, 13)
+var file_metrics_proto_msgTypes = make([]protoimpl.MessageInfo, 16)
 var file_metrics_proto_goTypes = []interface{}{
 	(MetricsBase_BuildVariant)(0),          // 0: soong_build_metrics.MetricsBase.BuildVariant
 	(MetricsBase_Arch)(0),                  // 1: soong_build_metrics.MetricsBase.Arch
@@ -2008,15 +2209,18 @@
 	(*BuildConfig)(nil),                    // 6: soong_build_metrics.BuildConfig
 	(*SystemResourceInfo)(nil),             // 7: soong_build_metrics.SystemResourceInfo
 	(*PerfInfo)(nil),                       // 8: soong_build_metrics.PerfInfo
-	(*ProcessResourceInfo)(nil),            // 9: soong_build_metrics.ProcessResourceInfo
-	(*ModuleTypeInfo)(nil),                 // 10: soong_build_metrics.ModuleTypeInfo
-	(*CriticalUserJourneyMetrics)(nil),     // 11: soong_build_metrics.CriticalUserJourneyMetrics
-	(*CriticalUserJourneysMetrics)(nil),    // 12: soong_build_metrics.CriticalUserJourneysMetrics
-	(*SoongBuildMetrics)(nil),              // 13: soong_build_metrics.SoongBuildMetrics
-	(*ExpConfigFetcher)(nil),               // 14: soong_build_metrics.ExpConfigFetcher
-	(*MixedBuildsInfo)(nil),                // 15: soong_build_metrics.MixedBuildsInfo
-	(*CriticalPathInfo)(nil),               // 16: soong_build_metrics.CriticalPathInfo
-	(*JobInfo)(nil),                        // 17: soong_build_metrics.JobInfo
+	(*PerfCounters)(nil),                   // 9: soong_build_metrics.PerfCounters
+	(*PerfCounterGroup)(nil),               // 10: soong_build_metrics.PerfCounterGroup
+	(*PerfCounter)(nil),                    // 11: soong_build_metrics.PerfCounter
+	(*ProcessResourceInfo)(nil),            // 12: soong_build_metrics.ProcessResourceInfo
+	(*ModuleTypeInfo)(nil),                 // 13: soong_build_metrics.ModuleTypeInfo
+	(*CriticalUserJourneyMetrics)(nil),     // 14: soong_build_metrics.CriticalUserJourneyMetrics
+	(*CriticalUserJourneysMetrics)(nil),    // 15: soong_build_metrics.CriticalUserJourneysMetrics
+	(*SoongBuildMetrics)(nil),              // 16: soong_build_metrics.SoongBuildMetrics
+	(*ExpConfigFetcher)(nil),               // 17: soong_build_metrics.ExpConfigFetcher
+	(*MixedBuildsInfo)(nil),                // 18: soong_build_metrics.MixedBuildsInfo
+	(*CriticalPathInfo)(nil),               // 19: soong_build_metrics.CriticalPathInfo
+	(*JobInfo)(nil),                        // 20: soong_build_metrics.JobInfo
 }
 var file_metrics_proto_depIdxs = []int32{
 	0,  // 0: soong_build_metrics.MetricsBase.target_build_variant:type_name -> soong_build_metrics.MetricsBase.BuildVariant
@@ -2028,27 +2232,30 @@
 	8,  // 6: soong_build_metrics.MetricsBase.soong_runs:type_name -> soong_build_metrics.PerfInfo
 	8,  // 7: soong_build_metrics.MetricsBase.ninja_runs:type_name -> soong_build_metrics.PerfInfo
 	8,  // 8: soong_build_metrics.MetricsBase.total:type_name -> soong_build_metrics.PerfInfo
-	13, // 9: soong_build_metrics.MetricsBase.soong_build_metrics:type_name -> soong_build_metrics.SoongBuildMetrics
+	16, // 9: soong_build_metrics.MetricsBase.soong_build_metrics:type_name -> soong_build_metrics.SoongBuildMetrics
 	6,  // 10: soong_build_metrics.MetricsBase.build_config:type_name -> soong_build_metrics.BuildConfig
 	7,  // 11: soong_build_metrics.MetricsBase.system_resource_info:type_name -> soong_build_metrics.SystemResourceInfo
 	8,  // 12: soong_build_metrics.MetricsBase.bazel_runs:type_name -> soong_build_metrics.PerfInfo
-	14, // 13: soong_build_metrics.MetricsBase.exp_config_fetcher:type_name -> soong_build_metrics.ExpConfigFetcher
-	16, // 14: soong_build_metrics.MetricsBase.critical_path_info:type_name -> soong_build_metrics.CriticalPathInfo
+	17, // 13: soong_build_metrics.MetricsBase.exp_config_fetcher:type_name -> soong_build_metrics.ExpConfigFetcher
+	19, // 14: soong_build_metrics.MetricsBase.critical_path_info:type_name -> soong_build_metrics.CriticalPathInfo
 	2,  // 15: soong_build_metrics.BuildConfig.ninja_weight_list_source:type_name -> soong_build_metrics.BuildConfig.NinjaWeightListSource
-	9,  // 16: soong_build_metrics.PerfInfo.processes_resource_info:type_name -> soong_build_metrics.ProcessResourceInfo
-	3,  // 17: soong_build_metrics.ModuleTypeInfo.build_system:type_name -> soong_build_metrics.ModuleTypeInfo.BuildSystem
-	5,  // 18: soong_build_metrics.CriticalUserJourneyMetrics.metrics:type_name -> soong_build_metrics.MetricsBase
-	11, // 19: soong_build_metrics.CriticalUserJourneysMetrics.cujs:type_name -> soong_build_metrics.CriticalUserJourneyMetrics
-	8,  // 20: soong_build_metrics.SoongBuildMetrics.events:type_name -> soong_build_metrics.PerfInfo
-	15, // 21: soong_build_metrics.SoongBuildMetrics.mixed_builds_info:type_name -> soong_build_metrics.MixedBuildsInfo
-	4,  // 22: soong_build_metrics.ExpConfigFetcher.status:type_name -> soong_build_metrics.ExpConfigFetcher.ConfigStatus
-	17, // 23: soong_build_metrics.CriticalPathInfo.critical_path:type_name -> soong_build_metrics.JobInfo
-	17, // 24: soong_build_metrics.CriticalPathInfo.long_running_jobs:type_name -> soong_build_metrics.JobInfo
-	25, // [25:25] is the sub-list for method output_type
-	25, // [25:25] is the sub-list for method input_type
-	25, // [25:25] is the sub-list for extension type_name
-	25, // [25:25] is the sub-list for extension extendee
-	0,  // [0:25] is the sub-list for field type_name
+	12, // 16: soong_build_metrics.PerfInfo.processes_resource_info:type_name -> soong_build_metrics.ProcessResourceInfo
+	10, // 17: soong_build_metrics.PerfCounters.groups:type_name -> soong_build_metrics.PerfCounterGroup
+	11, // 18: soong_build_metrics.PerfCounterGroup.counters:type_name -> soong_build_metrics.PerfCounter
+	3,  // 19: soong_build_metrics.ModuleTypeInfo.build_system:type_name -> soong_build_metrics.ModuleTypeInfo.BuildSystem
+	5,  // 20: soong_build_metrics.CriticalUserJourneyMetrics.metrics:type_name -> soong_build_metrics.MetricsBase
+	14, // 21: soong_build_metrics.CriticalUserJourneysMetrics.cujs:type_name -> soong_build_metrics.CriticalUserJourneyMetrics
+	8,  // 22: soong_build_metrics.SoongBuildMetrics.events:type_name -> soong_build_metrics.PerfInfo
+	18, // 23: soong_build_metrics.SoongBuildMetrics.mixed_builds_info:type_name -> soong_build_metrics.MixedBuildsInfo
+	9,  // 24: soong_build_metrics.SoongBuildMetrics.perf_counters:type_name -> soong_build_metrics.PerfCounters
+	4,  // 25: soong_build_metrics.ExpConfigFetcher.status:type_name -> soong_build_metrics.ExpConfigFetcher.ConfigStatus
+	20, // 26: soong_build_metrics.CriticalPathInfo.critical_path:type_name -> soong_build_metrics.JobInfo
+	20, // 27: soong_build_metrics.CriticalPathInfo.long_running_jobs:type_name -> soong_build_metrics.JobInfo
+	28, // [28:28] is the sub-list for method output_type
+	28, // [28:28] is the sub-list for method input_type
+	28, // [28:28] is the sub-list for extension type_name
+	28, // [28:28] is the sub-list for extension extendee
+	0,  // [0:28] is the sub-list for field type_name
 }
 
 func init() { file_metrics_proto_init() }
@@ -2106,7 +2313,7 @@
 			}
 		}
 		file_metrics_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ProcessResourceInfo); i {
+			switch v := v.(*PerfCounters); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2118,7 +2325,7 @@
 			}
 		}
 		file_metrics_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ModuleTypeInfo); i {
+			switch v := v.(*PerfCounterGroup); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2130,7 +2337,7 @@
 			}
 		}
 		file_metrics_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CriticalUserJourneyMetrics); i {
+			switch v := v.(*PerfCounter); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2142,7 +2349,7 @@
 			}
 		}
 		file_metrics_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CriticalUserJourneysMetrics); i {
+			switch v := v.(*ProcessResourceInfo); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2154,7 +2361,7 @@
 			}
 		}
 		file_metrics_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SoongBuildMetrics); i {
+			switch v := v.(*ModuleTypeInfo); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2166,7 +2373,7 @@
 			}
 		}
 		file_metrics_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ExpConfigFetcher); i {
+			switch v := v.(*CriticalUserJourneyMetrics); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2178,7 +2385,7 @@
 			}
 		}
 		file_metrics_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*MixedBuildsInfo); i {
+			switch v := v.(*CriticalUserJourneysMetrics); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2190,7 +2397,7 @@
 			}
 		}
 		file_metrics_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CriticalPathInfo); i {
+			switch v := v.(*SoongBuildMetrics); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2202,6 +2409,42 @@
 			}
 		}
 		file_metrics_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ExpConfigFetcher); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_metrics_proto_msgTypes[13].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*MixedBuildsInfo); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_metrics_proto_msgTypes[14].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*CriticalPathInfo); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_metrics_proto_msgTypes[15].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*JobInfo); i {
 			case 0:
 				return &v.state
@@ -2220,7 +2463,7 @@
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_metrics_proto_rawDesc,
 			NumEnums:      5,
-			NumMessages:   13,
+			NumMessages:   16,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
diff --git a/ui/metrics/metrics_proto/metrics.proto b/ui/metrics/metrics_proto/metrics.proto
index b437da7..11fcba7 100644
--- a/ui/metrics/metrics_proto/metrics.proto
+++ b/ui/metrics/metrics_proto/metrics.proto
@@ -213,6 +213,30 @@
   optional string error_message = 8;
 }
 
+message PerfCounters {
+  // The timestamp of these counters in nanoseconds.
+  optional uint64 time = 1;
+
+  // A list of counter names and values.
+  repeated PerfCounterGroup groups = 2;
+}
+
+message PerfCounterGroup {
+  // The name of this counter group (e.g. "cpu" or "memory")
+  optional string name = 1;
+
+  // The counters in this group
+  repeated PerfCounter counters = 2;
+}
+
+message PerfCounter {
+  // The name of this counter.
+  optional string name = 1;
+
+  // The value of this counter.
+  optional int64 value = 2;
+}
+
 message ProcessResourceInfo {
   // The name of the process for identification.
   optional string name = 1;
@@ -295,6 +319,9 @@
 
   // Mixed Builds information
   optional MixedBuildsInfo mixed_builds_info = 7;
+
+  // Performance during for soong_build execution.
+  repeated PerfCounters perf_counters = 8;
 }
 
 message ExpConfigFetcher {
diff --git a/ui/tracer/tracer.go b/ui/tracer/tracer.go
index b8fc87b..33b3d89 100644
--- a/ui/tracer/tracer.go
+++ b/ui/tracer/tracer.go
@@ -46,6 +46,8 @@
 	End(thread Thread)
 	Complete(name string, thread Thread, begin, end uint64)
 
+	CountersAtTime(name string, thread Thread, time uint64, counters []Counter)
+
 	ImportMicrofactoryLog(filename string)
 
 	StatusTracer() status.StatusOutput
@@ -247,3 +249,48 @@
 		Tid:   uint64(thread),
 	})
 }
+
+type Counter struct {
+	Name  string
+	Value int64
+}
+
+type countersMarshaller []Counter
+
+var _ json.Marshaler = countersMarshaller(nil)
+
+func (counters countersMarshaller) MarshalJSON() ([]byte, error) {
+	// This produces similar output to a map[string]int64, but maintains the order of the slice.
+	buf := bytes.Buffer{}
+	buf.WriteRune('{')
+	for i, counter := range counters {
+		name, err := json.Marshal(counter.Name)
+		if err != nil {
+			return nil, err
+		}
+		buf.Write(name)
+		buf.WriteByte(':')
+		value, err := json.Marshal(counter.Value)
+		if err != nil {
+			return nil, err
+		}
+		buf.Write(value)
+		if i != len(counters)-1 {
+			buf.WriteRune(',')
+		}
+	}
+	buf.WriteRune('}')
+	return buf.Bytes(), nil
+}
+
+// CountersAtTime writes a Counter event at the given timestamp in nanoseconds.
+func (t *tracerImpl) CountersAtTime(name string, thread Thread, time uint64, counters []Counter) {
+	t.writeEvent(&viewerEvent{
+		Name:  name,
+		Phase: "C",
+		Time:  time / 1000,
+		Pid:   0,
+		Tid:   uint64(thread),
+		Arg:   countersMarshaller(counters),
+	})
+}