add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/kernel/Makefile
..
..
@@ -56,7 +56,7 @@
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 obj-$(CONFIG_PROFILING) += profile.o
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 obj-$(CONFIG_STACKTRACE) += stacktrace.o
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 obj-y += time/
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-obj-$(CONFIG_FUTEX) += futex.o
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+obj-$(CONFIG_FUTEX) += futex/
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 obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o
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 obj-$(CONFIG_SMP) += smp.o
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 ifneq ($(CONFIG_SMP),y)