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AndroidKernel: Disable debugfs for user builds

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Debugfs is not needed on user builds, so disabling
same at compile time for ARM 64.

Change-Id: If6708c9de060584ebcba4cac9bad8e85d6a5ab7f
Signed-off-by: Swetha Chikkaboraiah <schikk@codeaurora.org>
This commit is contained in:
Swetha Chikkaboraiah 2020-07-29 22:47:07 +05:30 committed by Gerrit - the friendly Code Review server
parent 7ef2e3cc7a
commit ede5bcc51f
2 changed files with 46 additions and 3 deletions
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20
AndroidKernel.mk
View File

@ -10,6 +10,8 @@ ifneq ($(TARGET_KERNEL_APPEND_DTB), true)
$(info Using DTB Image)
INSTALLED_DTBIMAGE_TARGET := $(PRODUCT_OUT)/dtb.img
endif
MAKE_ARGS := $(strip $(TARGET_KERNEL_MAKE_ARGS))
KERNEL_DISABLE_DEBUGFS := $(TARGET_KERNEL_DISABLE_DEBUGFS)
TARGET_KERNEL_MAKE_ENV := $(strip $(TARGET_KERNEL_MAKE_ENV))
ifeq ($(TARGET_KERNEL_MAKE_ENV),)
@ -138,6 +140,7 @@ $(info Using appended DTB)
TARGET_PREBUILT_INT_KERNEL := $(TARGET_PREBUILT_INT_KERNEL)-dtb
endif
KERNEL_DEBUGFS := $(KERNEL_OUT)/tmp
KERNEL_HEADERS_INSTALL := $(KERNEL_OUT)/usr
KERNEL_MODULES_INSTALL ?= system
KERNEL_MODULES_OUT ?= $(PRODUCT_OUT)/$(KERNEL_MODULES_INSTALL)/lib/modules
@ -162,6 +165,9 @@ mpath=`dirname $$mdpath`; rm -rf $$mpath;\
fi
endef
$(KERNEL_OUT): $(KERNEL_DEBUGFS)
mkdir -p $(KERNEL_OUT)
ifneq ($(KERNEL_LEGACY_DIR),true)
$(KERNEL_USR): $(KERNEL_HEADERS_INSTALL)
rm -rf $(KERNEL_SYMLINK)
@ -170,9 +176,6 @@ $(KERNEL_USR): $(KERNEL_HEADERS_INSTALL)
$(TARGET_PREBUILT_INT_KERNEL): $(KERNEL_USR)
endif
$(KERNEL_OUT):
mkdir -p $(KERNEL_OUT)
$(KERNEL_CONFIG): $(KERNEL_OUT)
$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(real_cc) $(KERNEL_DEFCONFIG)
$(hide) if [ ! -z "$(KERNEL_CONFIG_OVERRIDE)" ]; then \
@ -206,6 +209,17 @@ $(TARGET_PREBUILT_INT_KERNEL): $(KERNEL_OUT) $(KERNEL_HEADERS_INSTALL)
$(clean-module-folder)
endif
$(KERNEL_DEBUGFS):
KERNEL_DIR=$(TARGET_KERNEL_SOURCE) \
DEFCONFIG=$(KERNEL_DEFCONFIG) \
OUT_DIR=$(KERNEL_OUT) \
ARCH=$(KERNEL_ARCH) \
CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) \
DISABLE_DEBUGFS=$(KERNEL_DISABLE_DEBUGFS) \
$(TARGET_KERNEL_SOURCE)/disable_dbgfs.sh \
$(real_cc) \
$(TARGET_KERNEL_MAKE_ARGS)
$(KERNEL_HEADERS_INSTALL): $(KERNEL_OUT)
$(hide) if [ ! -z "$(KERNEL_HEADER_DEFCONFIG)" ]; then \
rm -f $(BUILD_ROOT_LOC)$(KERNEL_CONFIG) && \

29
disable_dbgfs.sh Executable file
View File

@ -0,0 +1,29 @@
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# disable debugfs for user builds
export MAKE_ARGS=$@
if [ ${DISABLE_DEBUGFS} == "true" ]; then
echo "build variant ${TARGET_BUILD_VARIANT}"
if [ ${TARGET_BUILD_VARIANT} == "user" ] && \
[ ${ARCH} == "arm64" ]; then
echo "combining fragments for user build"
(cd $KERNEL_DIR && \
ARCH=${ARCH} CROSS_COMPILE=${CROSS_COMPILE}\
./scripts/kconfig/merge_config.sh \
./arch/${ARCH}/configs/$DEFCONFIG \
./arch/${ARCH}/configs/vendor/debugfs.config
make ${MAKE_ARGS} ARCH=${ARCH} \
CROSS_COMPILE=${CROSS_COMPILE} savedefconfig
mv defconfig ./arch/${ARCH}/configs/$DEFCONFIG
rm .config)
else
if [[ ${DEFCONFIG} == *"perf_defconfig" ]] && \
[ ${ARCH} == "arm64" ]; then
echo "resetting perf defconfig"
(cd ${KERNEL_DIR} && \
git checkout arch/$ARCH/configs/$DEFCONFIG)
fi
fi
fi