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<generated/at91_pm_data-offsets.h> is only generated and included by arch/arm/mach-at91/, so it does not need to reside in the globally visible include/generated/. I renamed it to arch/arm/mach-at91/pm_data-offsets.h since the prefix 'at91_' is just redundant in mach-at91/. My main motivation of this change is to avoid the race condition for the parallel build (-j) when CONFIG_IKHEADERS is enabled. When it is enabled, all the headers under include/ are archived into kernel/kheaders_data.tar.xz and exposed in the sysfs. In the parallel build, we have no idea in which order files are built. - If at91_pm_data-offsets.h is built before kheaders_data.tar.xz, the header will be included in the archive. Probably nobody will use it, but it is harmless except that it will increase the archive size needlessly. - If kheaders_data.tar.xz is built before at91_pm_data-offsets.h, the header will not be included in the archive. However, in the next build, the archive will be re-generated to include the newly-found at91_pm_data-offsets.h. This is not nice from the build system point of view. - If at91_pm_data-offsets.h and kheaders_data.tar.xz are built at the same time, the corrupted header might be included in the archive, which does not look nice either. This commit fixes the race. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Link: https://lore.kernel.org/r/20190823024346.591-1-yamada.masahiro@socionext.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
28 lines
662 B
Makefile
28 lines
662 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for the linux kernel.
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#
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# CPU-specific support
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obj-$(CONFIG_SOC_AT91RM9200) += at91rm9200.o
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obj-$(CONFIG_SOC_AT91SAM9) += at91sam9.o
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obj-$(CONFIG_SOC_SAMA5) += sama5.o
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obj-$(CONFIG_SOC_SAMV7) += samv7.o
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# Power Management
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obj-$(CONFIG_ATMEL_PM) += pm.o pm_suspend.o
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ifeq ($(CONFIG_CPU_V7),y)
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AFLAGS_pm_suspend.o := -march=armv7-a
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endif
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ifeq ($(CONFIG_PM_DEBUG),y)
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CFLAGS_pm.o += -DDEBUG
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endif
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$(obj)/pm_data-offsets.h: $(obj)/pm_data-offsets.s FORCE
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$(call filechk,offsets,__PM_DATA_OFFSETS_H__)
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$(obj)/pm_suspend.o: $(obj)/pm_data-offsets.h
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targets += pm_data-offsets.s
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clean-files += pm_data-offsets.h
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