Determine GC type based on BUILT_KERNEL_VERSION_FILE.
How it works:
1. build/make/core/Makefile generates a txt file with the kernel
version, which is taken from an explicit BOARD_KERNEL_VERSION value,
or extracted from the kernel image on the source tree, or extracted
from the kernel image extracted from the prebuilt boot.img.
The file is saved at
$ANDROID_PRODUCT_OUT/obj/PACKAGING/check_vintf_all_intermediates/kernel_version.txt.
2. If PRODUCT_ENABLE_UFFD_GC is "default", meaning the GC type needs to
be determined by the kernel version, build/make/core/Makefile copies
kernel_version.txt to
out/soong/dexpreopt/kernel_version_for_uffd_gc.txt.
3. build/soong/dexpreopt/config.go writes the the UFFD GC flag to
out/soong/dexpreopt/uffd_gc_flag.txt. The flag is determined by an
explicit PRODUCT_ENABLE_UFFD_GC value or by contruct_uffd_gc_flag.py,
which reads kernel_version_for_uffd_gc.txt and determines the flag
accordingly.
4. dex2oat takes the UFFD GC flag from uffd_gc_flag.txt.
5. post_process_props.py mangles ro.dalvik.vm.enable_uffd_gc based on
the same logic.
Bug: 321751629
Bug: 319554951
Bug: 318763448
Bug: 319648491
Test: m --no-skip-soong-tests nothing
Test: atest uffd_gc_utils_test
Test: Build with `OVERRIDE_ENABLE_UFFD_GC=default m` for device with no
UFFD support -
1. Check the existence of `-Xgc:CMC` in
out/soong/dexpreopt_arm64/dex_bootjars/android/system/framework/arm64/boot.invocation
(dex2oat invocation for a boot image)
2. Check the existence of `-Xgc:CMC` in
out/soong/.intermediates/packages/apps/Settings/Settings/android_common/dexpreopt/Settings/oat/arm64/package.invocation
(dex2oat invocation for an app defined in .bp)
3. Check the existence of `-Xgc:CMC` in
$ANDROID_PRODUCT_OUT/obj/APPS/Dialer_intermediates/oat/arm64/package.invocation
(dex2oat invocation for an app defined in .mk)
4. Check the value of ro.dalvik.vm.enable_uffd_gc in
$ANDROID_PRODUCT_OUT/product/etc/build.prop
Test: Build with `OVERRIDE_ENABLE_UFFD_GC=default m` for device with
UFFD support, and do the steps above.
Test: Build with `OVERRIDE_ENABLE_UFFD_GC=true m`, and do the steps
above.
Test: Build with `OVERRIDE_ENABLE_UFFD_GC=false m`, and do the steps
above.
Change-Id: I8df6e5be1644da05d2d5c57b3520f29601dfd7a4
diff --git a/tools/Android.bp b/tools/Android.bp
index 5c54fcf..0a55ed4 100644
--- a/tools/Android.bp
+++ b/tools/Android.bp
@@ -18,56 +18,65 @@
}
python_binary_host {
- name: "generate-self-extracting-archive",
- srcs: ["generate-self-extracting-archive.py"],
+ name: "generate-self-extracting-archive",
+ srcs: ["generate-self-extracting-archive.py"],
}
python_binary_host {
- name: "post_process_props",
- srcs: ["post_process_props.py"],
+ name: "post_process_props",
+ srcs: ["post_process_props.py"],
+ libs: [
+ "uffd_gc_utils",
+ ],
}
python_test_host {
- name: "post_process_props_unittest",
- main: "test_post_process_props.py",
- srcs: [
- "post_process_props.py",
- "test_post_process_props.py",
- ],
- test_config: "post_process_props_unittest.xml",
- test_suites: ["general-tests"],
+ name: "post_process_props_unittest",
+ main: "test_post_process_props.py",
+ srcs: [
+ "post_process_props.py",
+ "test_post_process_props.py",
+ ],
+ libs: [
+ "uffd_gc_utils",
+ ],
+ test_config: "post_process_props_unittest.xml",
+ test_suites: ["general-tests"],
}
python_binary_host {
- name: "extract_kernel",
- srcs: ["extract_kernel.py"],
+ name: "extract_kernel",
+ srcs: ["extract_kernel.py"],
}
genrule_defaults {
- name: "extract_kernel_release_defaults",
- tools: ["extract_kernel", "lz4"],
- out: ["kernel_release.txt"],
- cmd: "$(location) --tools lz4:$(location lz4) --input $(in) --output-release > $(out)"
+ name: "extract_kernel_release_defaults",
+ tools: [
+ "extract_kernel",
+ "lz4",
+ ],
+ out: ["kernel_release.txt"],
+ cmd: "$(location) --tools lz4:$(location lz4) --input $(in) --output-release > $(out)",
}
cc_binary_host {
- name: "build-runfiles",
- srcs: ["build-runfiles.cc"],
+ name: "build-runfiles",
+ srcs: ["build-runfiles.cc"],
}
python_binary_host {
- name: "check_radio_versions",
- srcs: ["check_radio_versions.py"],
+ name: "check_radio_versions",
+ srcs: ["check_radio_versions.py"],
}
python_binary_host {
- name: "check_elf_file",
- srcs: ["check_elf_file.py"],
+ name: "check_elf_file",
+ srcs: ["check_elf_file.py"],
}
python_binary_host {
- name: "generate_gts_shared_report",
- srcs: ["generate_gts_shared_report.py"],
+ name: "generate_gts_shared_report",
+ srcs: ["generate_gts_shared_report.py"],
}
python_binary_host {
@@ -77,10 +86,10 @@
"list_files.py",
],
version: {
- py3: {
- embedded_launcher: true,
- }
- }
+ py3: {
+ embedded_launcher: true,
+ },
+ },
}
python_test_host {
@@ -98,11 +107,11 @@
}
python_binary_host {
- name: "characteristics_rro_generator",
- srcs: ["characteristics_rro_generator.py"],
- version: {
- py3: {
- embedded_launcher: true,
+ name: "characteristics_rro_generator",
+ srcs: ["characteristics_rro_generator.py"],
+ version: {
+ py3: {
+ embedded_launcher: true,
+ },
},
- },
}