gitlab-ci: Determine the number of jobs dynamically

Some people might want to run the gitlab CI pipelines in an environment
where multiple CPUs are available to the runners, so let's rather get
the number for "-j" from the "nproc" program (increased by 1 to compensate
for jobs that wait for I/O) instead of hard-coding it.

Message-Id: <20200525131823.715-7-thuth@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 559ec2ab4d6295b8f30f748673d45cf522417541..349c77aa580e347a2ee6c275c0ba4b5e267476f2 100644 (file)
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -7,12 +7,14 @@ include:
   - apt-get update -qq
   - apt-get install -y -qq git gcc libglib2.0-dev libpixman-1-dev make
         genisoimage
+  - JOBS=$(expr $(nproc) + 1)
 
 .update_dnf_template: &before_script_dnf
  before_script:
   - dnf update -y
   - dnf install -y bzip2 diffutils gcc git genisoimage findutils glib2-devel
         make python3 perl-podlators perl-Test-Harness pixman-devel zlib-devel
+  - JOBS=$(expr $(nproc) + 1)
 
 build-system1:
  image: ubuntu:19.10
@@ -25,8 +27,8 @@ build-system1:
  - ../configure --enable-werror --target-list="aarch64-softmmu alpha-softmmu
       cris-softmmu hppa-softmmu lm32-softmmu moxie-softmmu microblazeel-softmmu
       mips64el-softmmu m68k-softmmu ppc-softmmu riscv64-softmmu sparc-softmmu"
- - make -j2
- - make -j2 check
+ - make -j"$JOBS"
+ - make -j"$JOBS" check
 
 build-system2:
  image: fedora:latest
@@ -40,8 +42,8 @@ build-system2:
  - ../configure --enable-werror --target-list="tricore-softmmu unicore32-softmmu
       microblaze-softmmu mips-softmmu riscv32-softmmu s390x-softmmu sh4-softmmu
       sparc64-softmmu x86_64-softmmu xtensa-softmmu nios2-softmmu or1k-softmmu"
- - make -j2
- - make -j2 check
+ - make -j"$JOBS"
+ - make -j"$JOBS" check
 
 build-disabled:
  image: fedora:latest
@@ -56,8 +58,8 @@ build-disabled:
       --disable-qom-cast-debug --disable-spice --disable-vhost-vsock
       --disable-vhost-net --disable-vhost-crypto --disable-vhost-user
       --target-list="i386-softmmu ppc64-softmmu mips64-softmmu i386-linux-user"
- - make -j2
- - make -j2 check-qtest SPEED=slow
+ - make -j"$JOBS"
+ - make -j"$JOBS" check-qtest SPEED=slow
 
 build-tcg-disabled:
  image: centos:8
@@ -67,7 +69,7 @@ build-tcg-disabled:
  - mkdir build
  - cd build
  - ../configure --cc=clang --enable-werror --disable-tcg --audio-drv-list=""
- - make -j2
+ - make -j"$JOBS"
  - make check-unit
  - make check-qapi-schema
  - cd tests/qemu-iotests/
@@ -86,7 +88,7 @@ build-user:
  - cd build
  - ../configure --enable-werror --disable-system --disable-guest-agent
                --disable-capstone --disable-slirp --disable-fdt
- - make -j2
+ - make -j"$JOBS"
  - make run-tcg-tests-i386-linux-user run-tcg-tests-x86_64-linux-user
 
 build-clang:
@@ -100,8 +102,8 @@ build-clang:
  - ../configure --cc=clang --cxx=clang++ --enable-werror
       --target-list="alpha-softmmu arm-softmmu m68k-softmmu mips64-softmmu
                      ppc-softmmu s390x-softmmu x86_64-softmmu arm-linux-user"
- - make -j2
- - make -j2 check
+ - make -j"$JOBS"
+ - make -j"$JOBS" check
 
 build-tci:
  image: centos:8
@@ -112,7 +114,7 @@ build-tci:
  - cd build
  - ../configure --enable-tcg-interpreter
       --target-list="$(for tg in $TARGETS; do echo -n ${tg}'-softmmu '; done)"
- - make -j2
+ - make -j"$JOBS"
  - make run-tcg-tests-x86_64-softmmu
  - make tests/qtest/boot-serial-test tests/qtest/cdrom-test tests/qtest/pxe-test
  - for tg in $TARGETS ; do