• Masahiro Yamada's avatar
    kbuild: avoid concurrency issue in parallel building dtbs and dtbs_check · b5154bf6
    Masahiro Yamada authored
    'make dtbs_check' checks the shecma in addition to building *.dtb files,
    in other words, 'make dtbs_check' is a super-set of 'make dtbs'.
    So, you do not have to do 'make dtbs dtbs_check', but I want to keep
    the build system as robust as possible in any use.
    
    Currently, 'dtbs' and 'dtbs_check' are independent of each other.
    In parallel building, two threads descend into arch/*/boot/dts/,
    one for dtbs and the other for dtbs_check, then end up with building
    the same DTB simultaneously.
    
    This commit fixes the concurrency issue. Otherwise, I see build errors
    like follows:
    
    $ make ARCH=arm64 defconfig
    $ make -j16 ARCH=arm64 DT_SCHEMA_FILES=Documentation/devicetree/bindings/arm/psci.yaml dtbs dtbs_check
      <snip>
      DTC     arch/arm64/boot/dts/qcom/sdm845-cheza-r2.dtb
      DTC     arch/arm64/boot/dts/amlogic/meson-gxl-s905x-p212.dtb
      DTC     arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-lite2.dtb
      DTC     arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-lite2.dtb
      DTC     arch/arm64/boot/dts/freescale/imx8mn-evk.dtb
      DTC     arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-one-plus.dtb
      DTC     arch/arm64/boot/dts/zte/zx296718-pcbox.dtb
      DTC     arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dt.yaml
      DTC     arch/arm64/boot/dts/amlogic/meson-gxl-s905d-p230.dtb
      DTC     arch/arm64/boot/dts/xilinx/zynqmp-zc1254-revA.dtb
      DTC     arch/arm64/boot/dts/allwinner/sun50i-h6-pine-h64.dtb
      DTC     arch/arm64/boot/dts/rockchip/rk3399-gru-scarlet-inx.dtb
      DTC     arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-one-plus.dtb
      CHECK   arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dt.yaml
    fixdep: error opening file: arch/arm64/boot/dts/allwinner/.sun50i-h6-orangepi-lite2.dtb.d: No such file or directory
    make[2]: *** [scripts/Makefile.lib:296: arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-lite2.dtb] Error 2
    make[2]: *** Deleting file 'arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-lite2.dtb'
    make[2]: *** Waiting for unfinished jobs....
      DTC     arch/arm64/boot/dts/rockchip/rk3399-gru-scarlet-kd.dtb
      DTC     arch/arm64/boot/dts/amlogic/meson-gxl-s905d-p231.dtb
      DTC     arch/arm64/boot/dts/xilinx/zynqmp-zc1275-revA.dtb
      DTC     arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dtb
    fixdep: parse error; no targets found
    make[2]: *** [scripts/Makefile.lib:296: arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-one-plus.dtb] Error 1
    make[2]: *** Deleting file 'arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-one-plus.dtb'
    make[1]: *** [scripts/Makefile.build:505: arch/arm64/boot/dts/allwinner] Error 2
    make[1]: *** Waiting for unfinished jobs....
      DTC     arch/arm64/boot/dts/renesas/r8a77951-salvator-xs.dtb
    Signed-off-by: default avatarMasahiro Yamada <masahiroy@kernel.org>
    Reviewed-by: default avatarRob Herring <robh@kernel.org>
    b5154bf6
Makefile 59.3 KB