Convert AFDO mutators to TransitionMutator (a6b407fb) · Commits · e / os / android_build_soong

android/config.go

+4 −4

Original line number	Diff line number	Diff line
		@@ -1462,18 +1462,18 @@ func (c *deviceConfig) PgoAdditionalProfileDirs() []string {
		}

		// AfdoProfile returns fully qualified path associated to the given module name
		func (c deviceConfig) AfdoProfile(name string) (string, error) {
		func (c *deviceConfig) AfdoProfile(name string) (string, error) {
		for _, afdoProfile := range c.config.productVariables.AfdoProfiles {
		split := strings.Split(afdoProfile, ":")
		if len(split) != 3 {
		return nil, fmt.Errorf("AFDO_PROFILES has invalid value: %s. "+
		return "", fmt.Errorf("AFDO_PROFILES has invalid value: %s. "+
		"The expected format is <module>:<fully-qualified-path-to-fdo_profile>", afdoProfile)
		}
		if split[0] == name {
		return proptools.StringPtr(strings.Join([]string{split[1], split[2]}, ":")), nil
		return strings.Join([]string{split[1], split[2]}, ":"), nil
		}
		}
		return nil, nil
		return "", nil
		}

		func (c *deviceConfig) VendorSepolicyDirs() []string {

cc/afdo.go

+73 −98

Original line number	Diff line number	Diff line
		@@ -27,23 +27,12 @@ import (
		// This flag needs to be in both CFlags and LdFlags to ensure correct symbol ordering
		const afdoFlagsFormat = "-fprofile-sample-use=%s -fprofile-sample-accurate"

		func recordMissingAfdoProfileFile(ctx android.BaseModuleContext, missing string) {
		getNamedMapForConfig(ctx.Config(), modulesMissingProfileFileKey).Store(missing, true)
		}

		type afdoRdep struct {
		VariationName *string
		ProfilePath *string
		}

		type AfdoProperties struct {
		// Afdo allows developers self-service enroll for
		// automatic feedback-directed optimization using profile data.
		Afdo bool

		FdoProfilePath *string `blueprint:"mutated"`

		AfdoRDeps []afdoRdep `blueprint:"mutated"`
		}

		type afdo struct {
		@@ -102,121 +91,107 @@ func (afdo *afdo) flags(ctx ModuleContext, flags Flags) Flags {
		return flags
		}

		func (afdo *afdo) addDep(ctx BaseModuleContext, actx android.BottomUpMutatorContext) {
		if ctx.Host() {
		// FdoProfileMutator reads the FdoProfileProvider from a direct dep with FdoProfileTag
		// assigns FdoProfileInfo.Path to the FdoProfilePath mutated property
		func (c *Module) fdoProfileMutator(ctx android.BottomUpMutatorContext) {
		if !c.Enabled() {
		return
		}

		if !c.afdo.afdoEnabled() {
		return
		}

		if ctx.static() && !ctx.staticBinary() {
		if c.Host() {
		return
		}

		if c.static() && !c.staticBinary() {
		return
		}

		if c, ok := ctx.Module().(*Module); ok && c.Enabled() {
		if fdoProfileName, err := actx.DeviceConfig().AfdoProfile(actx.ModuleName()); fdoProfileName != nil && err == nil {
		actx.AddFarVariationDependencies(
		if fdoProfileName, err := ctx.DeviceConfig().AfdoProfile(ctx.ModuleName()); fdoProfileName != "" && err == nil {
		deps := ctx.AddFarVariationDependencies(
		[]blueprint.Variation{
		{Mutator: "arch", Variation: actx.Target().ArchVariation()},
		{Mutator: "arch", Variation: ctx.Target().ArchVariation()},
		{Mutator: "os", Variation: "android"},
		},
		FdoProfileTag,
		[]string{*fdoProfileName}...,
		)
		fdoProfileName)
		if len(deps) > 0 && deps[0] != nil {
		if info, ok := android.OtherModuleProvider(ctx, deps[0], FdoProfileProvider); ok {
		c.afdo.Properties.FdoProfilePath = proptools.StringPtr(info.Path.String())
		}
		}
		}

		// FdoProfileMutator reads the FdoProfileProvider from a direct dep with FdoProfileTag
		// assigns FdoProfileInfo.Path to the FdoProfilePath mutated property
		func (c *Module) fdoProfileMutator(ctx android.BottomUpMutatorContext) {
		if !c.Enabled() {
		return
		}

		if !c.afdo.afdoEnabled() {
		return
		}

		ctx.VisitDirectDepsWithTag(FdoProfileTag, func(m android.Module) {
		if info, ok := android.OtherModuleProvider(ctx, m, FdoProfileProvider); ok {
		c.afdo.Properties.FdoProfilePath = proptools.StringPtr(info.Path.String())
		}
		})
		}

		var _ FdoProfileMutatorInterface = (*Module)(nil)

		// Propagate afdo requirements down from binaries and shared libraries
		func afdoDepsMutator(mctx android.TopDownMutatorContext) {
		if m, ok := mctx.Module().(*Module); ok && m.afdo.afdoEnabled() {
		path := m.afdo.Properties.FdoProfilePath
		mctx.WalkDeps(func(dep android.Module, parent android.Module) bool {
		tag := mctx.OtherModuleDependencyTag(dep)
		func afdoPropagateViaDepTag(tag blueprint.DependencyTag) bool {
		libTag, isLibTag := tag.(libraryDependencyTag)

		// Do not recurse down non-static dependencies
		if isLibTag {
		if !libTag.static() {
		return false
		}
		return libTag.static()
		} else {
		if tag != objDepTag && tag != reuseObjTag {
		return false
		return tag == objDepTag \|\| tag == reuseObjTag \|\| tag == staticVariantTag
		}
		}

		if dep, ok := dep.(*Module); ok {
		dep.afdo.Properties.AfdoRDeps = append(
		dep.afdo.Properties.AfdoRDeps,
		afdoRdep{
		VariationName: proptools.StringPtr(encodeTarget(m.Name())),
		ProfilePath: path,
		},
		)
		}
		// afdoTransitionMutator creates afdo variants of cc modules.
		type afdoTransitionMutator struct{}

		return true
		})
		}
		func (a *afdoTransitionMutator) Split(ctx android.BaseModuleContext) []string {
		return []string{""}
		}

		// Create afdo variants for modules that need them
		func afdoMutator(mctx android.BottomUpMutatorContext) {
		if m, ok := mctx.Module().(*Module); ok && m.afdo != nil {
		if !m.static() && m.afdo.Properties.Afdo {
		mctx.SetDependencyVariation(encodeTarget(m.Name()))
		return
		func (a *afdoTransitionMutator) OutgoingTransition(ctx android.OutgoingTransitionContext, sourceVariation string) string {
		if m, ok := ctx.Module().(*Module); ok && m.afdo != nil {
		if !afdoPropagateViaDepTag(ctx.DepTag()) {
		return ""
		}

		variationNames := []string{""}
		if sourceVariation != "" {
		return sourceVariation
		}

		variantNameToProfilePath := make(map[string]*string)
		if m.afdo.afdoEnabled() && !(m.static() && !m.staticBinary()) && !m.Host() {
		return encodeTarget(ctx.Module().Name())
		}
		}
		return ""
		}

		for _, afdoRDep := range m.afdo.Properties.AfdoRDeps {
		variantName := *afdoRDep.VariationName
		// An rdep can be set twice in AfdoRDeps because there can be
		// more than one path from an afdo-enabled module to
		// a static dep such as
		// afdo_enabled_foo -> static_bar ----> static_baz
		// \ ^
		// ----------------------\|
		// We only need to create one variant per unique rdep
		if _, exists := variantNameToProfilePath[variantName]; !exists {
		variationNames = append(variationNames, variantName)
		variantNameToProfilePath[variantName] = afdoRDep.ProfilePath
		func (a *afdoTransitionMutator) IncomingTransition(ctx android.IncomingTransitionContext, incomingVariation string) string {
		if m, ok := ctx.Module().(*Module); ok && m.afdo != nil {
		return incomingVariation
		}
		return ""
		}

		if len(variationNames) > 1 {
		modules := mctx.CreateVariations(variationNames...)
		for i, name := range variationNames {
		if name == "" {
		continue
		func (a *afdoTransitionMutator) Mutate(ctx android.BottomUpMutatorContext, variation string) {
		if variation == "" {
		return
		}

		if m, ok := ctx.Module().(*Module); ok && m.afdo != nil {
		m.Properties.PreventInstall = true
		m.Properties.HideFromMake = true
		m.afdo.Properties.Afdo = true
		if fdoProfileName, err := ctx.DeviceConfig().AfdoProfile(decodeTarget(variation)); fdoProfileName != "" && err == nil {
		deps := ctx.AddFarVariationDependencies(
		[]blueprint.Variation{
		{Mutator: "arch", Variation: ctx.Target().ArchVariation()},
		{Mutator: "os", Variation: "android"},
		},
		FdoProfileTag,
		fdoProfileName)
		if len(deps) > 0 && deps[0] != nil {
		if info, ok := android.OtherModuleProvider(ctx, deps[0], FdoProfileProvider); ok {
		m.afdo.Properties.FdoProfilePath = proptools.StringPtr(info.Path.String())
		}
		variation := modules[i].(*Module)
		variation.Properties.PreventInstall = true
		variation.Properties.HideFromMake = true
		variation.afdo.Properties.Afdo = true
		variation.afdo.Properties.FdoProfilePath = variantNameToProfilePath[name]
		}
		}
		}

cc/afdo_test.go

+2 −2

Original line number	Diff line number	Diff line
		@@ -174,11 +174,11 @@ func TestAfdoEnabledOnStaticDepNoAfdo(t *testing.T) {
		libBar := result.ModuleForTests("libBar", "android_arm64_armv8-a_static").Module()

		if !hasDirectDep(result, libTest, libFoo.Module()) {
		t.Errorf("libTest missing dependency on afdo variant of libFoo")
		t.Errorf("libTest missing dependency on non-afdo variant of libFoo")
		}

		if !hasDirectDep(result, libFoo.Module(), libBar) {
		t.Errorf("libFoo missing dependency on afdo variant of libBar")
		t.Errorf("libFoo missing dependency on non-afdo variant of libBar")
		}

		fooVariants := result.ModuleVariantsForTests("foo")

cc/cc.go

+2 −7

Original line number	Diff line number	Diff line
		@@ -55,7 +55,7 @@ func RegisterCCBuildComponents(ctx android.RegistrationContext) {
		ctx.BottomUp("test_per_src", TestPerSrcMutator).Parallel()
		ctx.BottomUp("version", versionMutator).Parallel()
		ctx.BottomUp("begin", BeginMutator).Parallel()
		ctx.BottomUp("fdo_profile", fdoProfileMutator)
		ctx.BottomUp("fdo_profile", fdoProfileMutator).Parallel()
		})

		ctx.PostDepsMutators(func(ctx android.RegisterMutatorsContext) {
		@@ -70,8 +70,7 @@ func RegisterCCBuildComponents(ctx android.RegistrationContext) {

		ctx.Transition("coverage", &coverageTransitionMutator{})

		ctx.TopDown("afdo_deps", afdoDepsMutator)
		ctx.BottomUp("afdo", afdoMutator).Parallel()
		ctx.Transition("afdo", &afdoTransitionMutator{})

		ctx.Transition("orderfile", &orderfileTransitionMutator{})

		@@ -2339,10 +2338,6 @@ func (c *Module) beginMutator(actx android.BottomUpMutatorContext) {
		}
		ctx.ctx = ctx

		if !actx.Host() \|\| !ctx.static() \|\| ctx.staticBinary() {
		c.afdo.addDep(ctx, actx)
		}

		c.begin(ctx)
		}

rust/afdo.go

+2 −2

Original line number	Diff line number	Diff line
		@@ -44,14 +44,14 @@ func (afdo *afdo) addDep(ctx BaseModuleContext, actx android.BottomUpMutatorCont
		if err != nil {
		ctx.ModuleErrorf("%s", err.Error())
		}
		if fdoProfileName != nil {
		if fdoProfileName != "" {
		actx.AddFarVariationDependencies(
		[]blueprint.Variation{
		{Mutator: "arch", Variation: actx.Target().ArchVariation()},
		{Mutator: "os", Variation: "android"},
		},
		cc.FdoProfileTag,
		[]string{*fdoProfileName}...,
		[]string{fdoProfileName}...,
		)
		}
		}