kbuild: exploit parallel building for CONFIG_HEADERS_CHECK (257edce6) · Commits · 戴 / test

When CONFIG_HEADERS_CHECK is enabled, the headers_check is executed as a serialized task in the vmlinux recipe. Make it independent of vmlinux so that parallel building can process the headers_check and other build targets simultaneously. Signed-off-by:

Masahiro Yamada <yamada.masahiro@socionext.com>

Makefile

+4 −3

Original line number	Diff line number	Diff line
		@@ -1035,9 +1035,6 @@ cmd_link-vmlinux = \
		$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)

		vmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE
		ifdef CONFIG_HEADERS_CHECK
		$(Q)$(MAKE) -f $(srctree)/Makefile headers_check
		endif
		ifdef CONFIG_GDB_SCRIPTS
		$(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py)
		endif
		@@ -1208,6 +1205,10 @@ headers_check: headers_install
		$(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include HDRCHECK=1
		$(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi $(hdr-dst) HDRCHECK=1

		ifdef CONFIG_HEADERS_CHECK
		all: headers_check
		endif

		# ---------------------------------------------------------------------------
		# Kernel selftest

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