add rule to make perf

Author: SolidEva

kernel/makefile

@@ -91,6 +91,12 @@ blobby_kernel:
 	touch $(KERNEL_EXTRACTED)
 	touch $(KERNEL_PATCHED)
 
+
+#TODO: package perf/linux-tools
+.PHONY: perf
+perf: $(PRAWNOS_KERNEL_BUILT)
+	$(PRAWNOS_KERNEL_SCRIPTS_PERF) $(KVER) $(KERNEL_RESOURCES) $(PRAWNOS_KERNEL_BUILD) $(PRAWNOS_INITRAMFS_IMAGE) $(TARGET)
+
 ### REAL RULES
 
 $(KERNEL_ATH9K_FIRMWARES):

scripts/BuildScripts/BuildCommon.mk

@@ -121,6 +121,7 @@ PRAWNOS_KERNEL_SCRIPTS := $(PRAWNOS_BUILD_SCRIPTS)/KernelScripts
 PRAWNOS_KERNEL_SCRIPTS_BUILD := $(PRAWNOS_KERNEL_SCRIPTS)/buildKernel.sh
 PRAWNOS_KERNEL_SCRIPTS_MENUCONFIG := $(PRAWNOS_KERNEL_SCRIPTS)/crossMenuConfig.sh
 PRAWNOS_KERNEL_SCRIPTS_PATCH := $(PRAWNOS_KERNEL_SCRIPTS)/patchKernel.sh
+PRAWNOS_KERNEL_SCRIPTS_PERF := $(PRAWNOS_KERNEL_SCRIPTS)/buildPerf.sh
 PRAWNOS_KERNEL_SCRIPTS_BUILD_ATH9K := $(PRAWNOS_KERNEL_SCRIPTS)/buildAth9k.sh
 PRAWNOS_KERNEL_SCRIPTS_UPDATE_DEB_FILES := $(PRAWNOS_KERNEL_SCRIPTS)/updateKernelDebfiles.sh
 

scripts/BuildScripts/KernelScripts/buildPerf.sh

@@ -0,0 +1,85 @@
+#!/bin/bash
+
+set -x
+set -e
+
+# build perf for the PrawnOS linux kernel
+
+
+# This file is part of PrawnOS (https://www.prawnos.com)
+# Copyright (c) 2020 Hal Emmerich <[email protected]>
+
+# PrawnOS is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2
+# as published by the Free Software Foundation.
+
+# PrawnOS is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with PrawnOS.  If not, see <https://www.gnu.org/licenses/>.
+
+if [ -z "$1" ]
+then
+    echo "No kernel version supplied"
+    exit 1
+fi
+if [ -z "$2" ]
+then
+    echo "No resources directory"
+    exit 1
+fi
+if [ -z "$3" ]
+then
+    echo "No build directory supplied"
+    exit 1
+fi
+if [ -z "$4" ]
+then
+    echo "No PrawnOS initramfs supplied"
+    exit 1
+fi
+if [ -z "$" ]
+then
+    echo "No PrawnOS target arch supplied"
+    exit 1
+fi
+
+
+KVER=$1
+RESOURCES=$2
+BUILD_DIR=$3
+INITRAMFS=$4
+TARGET=$5
+
+#assumes the kernel is already built, so we don't have to worry about janitorial work
+
+
+cd $BUILD_DIR
+
+sudo apt install libzstd-dev libelf-dev systemtap-sdt-dev libssl-dev libslang2-dev libperl-dev python-dev liblzma-dev libcap-dev libnuma-dev libbabeltrace-dev libbabeltrace-ctf-dev flex bison libiberty-dev binutils-dev libunwind-dev libdw-dev
+
+ARCH_ARMHF=armhf
+ARCH_ARM64=arm64
+
+#this arch nonsense is obnoxious.
+# armhf is just "arm" to the kernel
+# arm64 is just arm64
+if [ "$TARGET" == "$ARCH_ARMHF" ]; then
+    CROSS_COMPILER=arm-none-eabi-
+    # kernel doesn't differentiate between arm and armhf
+    KERNEL_ARCH=arm
+elif [ "$TARGET" == "$ARCH_ARM64" ]; then
+    CROSS_COMPILER=aarch64-linux-gnu-
+    KERNEL_ARCH=$ARCH_ARM64
+else
+    echo "no valid target arch specified"
+    exit 1
+fi
+
+cd tools/perf/
+make -j $(($(nproc) +1))  CROSS_COMPILE=$CROSS_COMPILER ARCH=$KERNEL_ARCH
+
+#TODO: for packaging, we can use make -C tools/ perf_install prefix=/usr/