change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/Kbuild
..
..
@@ -1,69 +1,45 @@
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 # SPDX-License-Identifier: GPL-2.0
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 #
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 # Kbuild for top-level directory of the kernel
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-# This file takes care of the following:
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-# 1) Generate bounds.h
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-# 2) Generate timeconst.h
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-# 3) Generate asm-offsets.h (may need bounds.h and timeconst.h)
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-# 4) Check for missing system calls
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-# 5) Generate constants.py (may need bounds.h)
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 #####
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-# 1) Generate bounds.h
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+# Generate bounds.h
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 bounds-file := include/generated/bounds.h
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9
 
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-always  := $(bounds-file)
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+always-y := $(bounds-file)
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 targets := kernel/bounds.s
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-# We use internal kbuild rules to avoid the "is up to date" message from make
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-kernel/bounds.s: kernel/bounds.c FORCE
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-	$(call if_changed_dep,cc_s_c)
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-
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-$(obj)/$(bounds-file): kernel/bounds.s FORCE
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+$(bounds-file): kernel/bounds.s FORCE
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 	$(call filechk,offsets,__LINUX_BOUNDS_H__)
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 #####
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-# 2) Generate timeconst.h
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+# Generate timeconst.h
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 timeconst-file := include/generated/timeconst.h
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-targets += $(timeconst-file)
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+filechk_gentimeconst = echo $(CONFIG_HZ) | bc -q $<
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-quiet_cmd_gentimeconst = GEN     $@
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-define cmd_gentimeconst
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-	(echo $(CONFIG_HZ) | bc -q $< ) > $@
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-endef
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-define filechk_gentimeconst
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-	(echo $(CONFIG_HZ) | bc -q $< )
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-endef
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-
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-$(obj)/$(timeconst-file): kernel/time/timeconst.bc FORCE
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+$(timeconst-file): kernel/time/timeconst.bc FORCE
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 	$(call filechk,gentimeconst)
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 #####
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-# 3) Generate asm-offsets.h
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-#
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+# Generate asm-offsets.h
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 offsets-file := include/generated/asm-offsets.h
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-always  += $(offsets-file)
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+always-y += $(offsets-file)
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 targets += arch/$(SRCARCH)/kernel/asm-offsets.s
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-# We use internal kbuild rules to avoid the "is up to date" message from make
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-arch/$(SRCARCH)/kernel/asm-offsets.s: arch/$(SRCARCH)/kernel/asm-offsets.c \
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-                                      $(obj)/$(timeconst-file) $(obj)/$(bounds-file) FORCE
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-	$(call if_changed_dep,cc_s_c)
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+arch/$(SRCARCH)/kernel/asm-offsets.s: $(timeconst-file) $(bounds-file)
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-$(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s FORCE
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+$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s FORCE
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 	$(call filechk,offsets,__ASM_OFFSETS_H__)
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 #####
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-# 4) Check for missing system calls
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-#
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+# Check for missing system calls
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-always += missing-syscalls
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-targets += missing-syscalls
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+always-y += missing-syscalls
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 quiet_cmd_syscalls = CALL    $<
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       cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags) $(missing_syscalls_flags)
..
..
@@ -72,13 +48,12 @@
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 	$(call cmd,syscalls)
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 #####
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-# 5) Generate constants for Python GDB integration
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-#
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+# Check atomic headers are up-to-date
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-extra-$(CONFIG_GDB_SCRIPTS) += build_constants_py
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+always-y += old-atomics
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-build_constants_py: $(obj)/$(timeconst-file) $(obj)/$(bounds-file)
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-	@$(MAKE) $(build)=scripts/gdb/linux $@
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+quiet_cmd_atomics = CALL    $<
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+      cmd_atomics = $(CONFIG_SHELL) $<
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-# Keep these three files during make clean
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-no-clean-files := $(bounds-file) $(offsets-file) $(timeconst-file)
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+old-atomics: scripts/atomic/check-atomics.sh FORCE
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+	$(call cmd,atomics)