1 files changed, 59 insertions, 0 deletions
diff --git a/Kbuild b/Kbuild
new file mode 100644
index 000000000..fa441b98c
--- /dev/null
+++ b/Kbuild
@@ -0,0 +1,59 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Kbuild for top-level directory of the kernel
+
+#####
+# Generate bounds.h
+
+bounds-file := include/generated/bounds.h
+
+always-y := $(bounds-file)
+targets := kernel/bounds.s
+
+$(bounds-file): kernel/bounds.s FORCE
+	$(call filechk,offsets,__LINUX_BOUNDS_H__)
+
+#####
+# Generate timeconst.h
+
+timeconst-file := include/generated/timeconst.h
+
+filechk_gentimeconst = echo $(CONFIG_HZ) | bc -q $<
+
+$(timeconst-file): kernel/time/timeconst.bc FORCE
+	$(call filechk,gentimeconst)
+
+#####
+# Generate asm-offsets.h
+
+offsets-file := include/generated/asm-offsets.h
+
+always-y += $(offsets-file)
+targets += arch/$(SRCARCH)/kernel/asm-offsets.s
+
+arch/$(SRCARCH)/kernel/asm-offsets.s: $(timeconst-file) $(bounds-file)
+
+$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s FORCE
+	$(call filechk,offsets,__ASM_OFFSETS_H__)
+
+#####
+# Check for missing system calls
+
+always-y += missing-syscalls
+
+quiet_cmd_syscalls = CALL    $<
+      cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags) $(missing_syscalls_flags)
+
+missing-syscalls: scripts/checksyscalls.sh $(offsets-file) FORCE
+	$(call cmd,syscalls)
+
+#####
+# Check atomic headers are up-to-date
+
+always-y += old-atomics
+
+quiet_cmd_atomics = CALL    $<
+      cmd_atomics = $(CONFIG_SHELL) $<
+
+old-atomics: scripts/atomic/check-atomics.sh FORCE
+	$(call cmd,atomics)