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lfs/linux: install perf tool from linux source

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compile and install perf tool from linux
source for performance monitoring.

change the setting before run perf

echo -1 > /proc/sys/kernel/perf_event_paranoid
echo 0 > /proc/sys/kernel/kptr_restrict

Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
This commit is contained in:
Vincent Li
2024-09-23 23:41:10 +00:00
parent 6f60c4696f
commit 2cf44838bf
1 changed files with 6 additions and 0 deletions
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lfs/linux
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@@ -171,6 +171,9 @@ else
cd $(DIR_APP)/tools/bpf/bpftool && sed -i -e 's/^prefix ?= \/usr\/local/prefix ?= \/usr/' Makefile
cd $(DIR_APP)/tools/bpf/bpftool && make $(MAKETUNING)
# Build perf tool
cd $(DIR_APP)/tools/perf && NO_JEVENTS=1 NO_LIBTRACEEVENT=1 make $(MAKETUNING)
# Install the kernel
cd $(DIR_APP) && cp -v arch/$(KERNEL_ARCH)/boot/$(KERNEL_TARGET) /boot/vmlinuz-$(VER)-$(VERSUFIX)
cd $(DIR_APP) && cp -v System.map /boot/System.map-$(VER)-$(VERSUFIX)
@@ -180,6 +183,9 @@ else
# Install bpftool
cd $(DIR_APP)/tools/bpf/bpftool && make install
# Install perf tool
cd $(DIR_APP)/tools/perf && install -m 755 perf /usr/sbin/
ifneq "$(BUILD_PLATFORM)" "x86"
cd $(DIR_APP) && make $(MAKETUNING) dtbs
mkdir -p /boot/dtb-$(VER)-$(VERSUFIX)