Autogenerate a system_dlkm android_filesystem
This .img file will package the .ko files returned by
`BOARD_SYSTEM_KERNEL_MODULES` (plus some other files). The .ko files
will be clustered by directory, and a `prebuilt_kernel_modules` will
be automatically created for each cluster. These will then be added to
the deps of the top-level system_dlkm android_filesystem.
Bug: 376726109
Test: m out/soong/.intermediates/build/soong/fsgen/soong_filesystem_creator/android_common/diff_test_aosp_cf_x86_64_phone_generated_system_dlkm_image.txt
KATI only installed file(s):
etc/NOTICE.xml.gz
etc/build.prop
etc/fs_config_dirs
etc/fs_config_files
Change-Id: I96669ad9595379c4de4c67331fc56bfa8d93e036
diff --git a/fsgen/filesystem_creator.go b/fsgen/filesystem_creator.go
index 06e154a..7ef7d99 100644
--- a/fsgen/filesystem_creator.go
+++ b/fsgen/filesystem_creator.go
@@ -25,6 +25,7 @@
"android/soong/android"
"android/soong/filesystem"
+ "android/soong/kernel"
"github.com/google/blueprint"
"github.com/google/blueprint/parser"
@@ -115,6 +116,9 @@
if ctx.DeviceConfig().BuildingOdmImage() && ctx.DeviceConfig().OdmPath() == "odm" {
generatedPartitions = append(generatedPartitions, "odm")
}
+ if partitionVars.BuildingSystemDlkmImage {
+ generatedPartitions = append(generatedPartitions, "system_dlkm")
+ }
return &FsGenState{
depCandidates: candidates,
@@ -160,6 +164,7 @@
"com.android.vndk.v33": defaultDepCandidateProps(ctx.Config()),
"com.android.vndk.v34": defaultDepCandidateProps(ctx.Config()),
},
+ "system_dlkm": {},
},
soongGeneratedPartitions: generatedPartitions,
fsDepsMutex: sync.Mutex{},
@@ -500,9 +505,19 @@
fsProps.Linkerconfig.Linker_config_srcs = f.createLinkerConfigSourceFilegroups(ctx, partitionType)
}
+ if partitionType == "system_dlkm" {
+ kernelModules := ctx.Config().ProductVariables().PartitionVarsForSoongMigrationOnlyDoNotUse.SystemKernelModules
+ f.createPrebuiltKernelModules(ctx, partitionType, kernelModules)
+ }
+
var module android.Module
if partitionType == "system" {
module = ctx.CreateModule(filesystem.SystemImageFactory, baseProps, fsProps)
+ } else if partitionType == "system_dlkm" {
+ // Do not set partition_type. build/soong/android/paths#modulePartition currently does not support dlkm
+ // partitions. Since `android_filesystem` uses a partition based filter, setting the partition here
+ // would result in missing in entries.
+ module = ctx.CreateModule(filesystem.FilesystemFactory, baseProps, fsProps)
} else {
// Explicitly set the partition.
fsProps.Partition_type = proptools.StringPtr(partitionType)
@@ -531,6 +546,41 @@
return true
}
+// createPrebuiltKernelModules creates `prebuilt_kernel_modules`. These modules will be added to deps of the
+// autogenerated *_dlkm filsystem modules.
+// The input `kernelModules` is a space separated list of .ko files in the workspace. This will be partitioned per directory
+// and a `prebuilt_kernel_modules` will be created per partition.
+// These autogenerated modules will be subsequently added to the deps of the top level *_dlkm android_filesystem
+func (f *filesystemCreator) createPrebuiltKernelModules(ctx android.LoadHookContext, partitionType string, kernelModules []string) {
+ // Partition the files per directory
+ dirToFiles := map[string][]string{}
+ for _, kernelModule := range kernelModules {
+ dir := filepath.Dir(kernelModule)
+ base := filepath.Base(kernelModule)
+ dirToFiles[dir] = append(dirToFiles[dir], base)
+ }
+ // Create a prebuilt_kernel_modules module per partition
+ fsGenState := ctx.Config().Get(fsGenStateOnceKey).(*FsGenState)
+ for index, dir := range android.SortedKeys(dirToFiles) {
+ name := generatedModuleName(ctx.Config(), fmt.Sprintf("%s-kernel-modules-%s", partitionType, strconv.Itoa(index)))
+ props := &struct {
+ Name *string
+ Srcs []string
+ }{
+ Name: proptools.StringPtr(name),
+ Srcs: dirToFiles[dir],
+ }
+ kernelModule := ctx.CreateModuleInDirectory(
+ kernel.PrebuiltKernelModulesFactory,
+ dir,
+ props,
+ )
+ kernelModule.HideFromMake()
+ // Add to deps
+ (*fsGenState.fsDeps[partitionType])[name] = defaultDepCandidateProps(ctx.Config())
+ }
+}
+
// createLinkerConfigSourceFilegroups creates filegroup modules to generate linker.config.pb for the following partitions
// 1. vendor: Using PRODUCT_VENDOR_LINKER_CONFIG_FRAGMENTS (space separated file list)
// 1. product: Using PRODUCT_PRODUCT_LINKER_CONFIG_FRAGMENTS (space separated file list)