Different prebuilts might have different contents and thus, different
boot jars to be removed from the existing apex boot jar lists e.g. next
using U prebuilts would need to remove framework-pdf while ap31 with V
prebuilts must not remove such. The existing mechanism will always
remove framework-pdf whenever prebuilts are enabled regardless of
release config, which is not correct in context of multiple prebuilt
support.
Ignore-AOSP-First: for successful build, we need to submit this togther with ag/26332775. this cl will get cp'ed into aosp later on
Bug: 327022391
Test: build device in next and trunk
Merged-In: I9949fb7075ab6c207a292f13fd75e010a4958f87
Change-Id: I9949fb7075ab6c207a292f13fd75e010a4958f87
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
framework-pdf is newly added framework jar which is not yet included in
the actual prebuilt apex. Thus, we add it PRODUCT_APEX_BOOT_JARS_FOR_SOURCE_BUILD_ONLY. The APEX_BOOT_JARS_EXCLUDED will be created based on PRODUCT_APEX_BOOT_JARS_FOR_SOURCE_BUILD_ONLY and will be removed from ApexBootJars.
Bug: 304719212
Test: lunch cf_x86_phone-next-userdebug & m
Test: lunch cf_x86_phone-trunk-userdebug & m
Change-Id: I9902131629900fbd629b8560a422ed8c2b06073c
This is determined by:
- a product config flag
- the vendor API level
It is then passed to the device as a system property
"ro.dalvik.vm.enable_uffd_gc".
This change is a no-op change. It doesn't enable userfaultfd GC by
default. OVERRIDE_ENABLE_UFFD_GC=default can be passed to the build
system to enable userfaultfd GC for testing purposes.
Bug: 242553398
Test: -
1. lunch aosp_redfin-userdebug
2. OVERRIDE_ENABLE_UFFD_GC=default build/soong/soong_ui.bash --dumpvars-mode --vars=ENABLE_UFFD_GC
3. See "false" in the output
Test: -
1. lunch aosp_oriole-userdebug
2. OVERRIDE_ENABLE_UFFD_GC=default build/soong/soong_ui.bash --dumpvars-mode --vars=ENABLE_UFFD_GC
3. See "true" in the output
Test: -
1. lunch aosp_redfin-userdebug
2. OVERRIDE_ENABLE_UFFD_GC=true build/soong/soong_ui.bash --dumpvars-mode --vars=ENABLE_UFFD_GC
3. See "true" in the output
Test: -
1. lunch aosp_oriole-userdebug
2. OVERRIDE_ENABLE_UFFD_GC=false build/soong/soong_ui.bash --dumpvars-mode --vars=ENABLE_UFFD_GC
3. See "false" in the output
Change-Id: Ifd6e6cddb502315912ff949619a5b526ae0d73ff
