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| author | Masahiro Yamada <masahiroy@kernel.org> | 2022-08-20 18:15:29 +0900 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2022-09-29 04:40:14 +0900 |
| commit | b10fdeea8cf42c0d97b337e9e501c92da4389a03 (patch) | |
| tree | ac5eac64779cc1e180e99e0e67eda63681dd3d3c /Kbuild | |
| parent | a3c4d4abaaf0b3fb3335a432fa9b75d414d1f987 (diff) | |
| download | linux-b10fdeea8cf42c0d97b337e9e501c92da4389a03.tar.gz | |
kbuild: check sha1sum just once for each atomic header
It is unneeded to check the sha1sum every time. Create the timestamp files to manage it. Add '.' to clean-dirs because 'make clean' must visit ./Kbuild to clean up the timestamp files. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'Kbuild')
| -rw-r--r-- | Kbuild | 33 |
1 files changed, 24 insertions, 9 deletions
diff --git a/Kbuild b/Kbuild index e122d93cee32..0b9e8a16a621 100644 --- a/Kbuild +++ b/Kbuild @@ -43,17 +43,32 @@ PHONY += missing-syscalls missing-syscalls: scripts/checksyscalls.sh $(offsets-file) $(call cmd,syscalls) -# Check atomic headers are up-to-date - -quiet_cmd_atomics = CALL $< - cmd_atomics = $(CONFIG_SHELL) $< - -PHONY += old-atomics -old-atomics: scripts/atomic/check-atomics.sh - $(call cmd,atomics) +# Check the manual modification of atomic headers + +quiet_cmd_check_sha1 = CHKSHA1 $< + cmd_check_sha1 = \ + if ! command -v sha1sum >/dev/null; then \ + echo "warning: cannot check the header due to sha1sum missing"; \ + exit 0; \ + fi; \ + if [ "$$(sed -n '$$s:// ::p' $<)" != \ + "$$(sed '$$d' $< | sha1sum | sed 's/ .*//')" ]; then \ + echo "error: $< has been modified." >&2; \ + exit 1; \ + fi; \ + touch $@ + +atomic-checks += $(addprefix $(obj)/.checked-, \ + atomic-arch-fallback.h \ + atomic-instrumented.h \ + atomic-long.h) + +targets += $(atomic-checks) +$(atomic-checks): $(obj)/.checked-%: include/linux/atomic/% FORCE + $(call if_changed,check_sha1) # A phony target that depends on all the preparation targets PHONY += prepare -prepare: $(offsets-file) missing-syscalls old-atomics +prepare: $(offsets-file) missing-syscalls $(atomic-checks) @: |