From: Łukasz Stelmach <l.stelmach@samsung.com>
Date: Fri, 26 Mar 2021 14:02:18 +0000 (+0100)
Subject: script: Detect number of CPUs
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=52e00acd6d37c1462578d062acd080811964cf86;p=platform%2Fkernel%2Flinux-rpi3.git

script: Detect number of CPUs

Automatically determine the number of parallel make(1) processes to run.

Change-Id: I0ce778e5c15ceb8cf80bbfc2f4bb58c937630ba3
Signed-off-by: Łukasz Stelmach <l.stelmach@samsung.com>
---

diff --git a/build-rpi4.sh b/build-rpi4.sh
index 27eac56c8f89..094988cc381b 100755
--- a/build-rpi4.sh
+++ b/build-rpi4.sh
@@ -1,5 +1,8 @@
 #!/bin/bash
 
+NCPUS=`cat /proc/cpuinfo | grep processor | wc -l`
+NCPUS=$(($NCPUS * 2))
+
 if [ $# != 1 ];
 then
 	echo "Usage : build-rpi3.sh <architecture>"
@@ -27,7 +30,7 @@ if [ $1 = "arm" ]; then
 	if ! [ -e .config ] ; then
 		make ARCH=arm CROSS_COMPILE="$CROSS_COMPILER" tizen_bcm2709_defconfig
 	fi
-	make ARCH=arm CROSS_COMPILE="$CROSS_COMPILER" -j8
+	make ARCH=arm CROSS_COMPILE="$CROSS_COMPILER" -j $NCPUS
 	if [ ! -f "./arch/arm/boot/zImage" ]; then
 		echo "Build fail"
 		exit 1
@@ -42,7 +45,7 @@ elif [ $1 = "arm64" ]; then
 	if ! [ -e .config ] ; then
 		make ARCH=arm64 CROSS_COMPILE="$CROSS_COMPILER" tizen_bcmrpi3_defconfig
 	fi
-	make ARCH=arm64 CROSS_COMPILE="$CROSS_COMPILER" -j8
+	make ARCH=arm64 CROSS_COMPILE="$CROSS_COMPILER" -j $NCPUS
 	if [ ! -f "./arch/arm64/boot/Image" ]; then
 		echo "Build fail"
 		exit 1