Commit 61b3d210 authored by Ben Hutchings's avatar Ben Hutchings Committed by Arnaldo Carvalho de Melo
Browse files

perf doc: Add support for KBUILD_BUILD_TIMESTAMP 



When building man pages from a Git checkout, we consistently set the
man page date based on when the input was last changed.  Otherwise, it
defaults to the build time, which is not reproducible.

Allow the date to be set through the KBUILD_BUILD_TIMESTAMP variable,
as for timestamps in the kernel itself.

Signed-off-by: default avatarBen Hutchings <benh@debian.org>
Acked-by: default avatarIan <Rogers&lt;irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Salvatore Bonaccorso <carnil@debian.org>
Link: https://lore.kernel.org/r/ZF/1F1P+b9qZ/vVH@decadent.org.uk


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 21a16513

tools/perf/Documentation/Makefile

+7 −3
Original line number Diff line number Diff line
@@ -250,9 +250,13 @@ $(MAN_HTML): $(OUTPUT)%.html : %.txt 
		$(ASCIIDOC_EXTRA) -aperf_version=$(PERF_VERSION) -o $@+ $< && \

	mv $@+ $@



# Generate date from git log of the doc input file

PERF_DATE = $(shell git log -1 --pretty="format:%cd" \

                --date=short --no-show-signature $<)

# Generate date from either KBUILD_BUILD_TIMESTAMP or git log of

# the doc input file

PERF_DATE = $(strip \

              $(if $(KBUILD_BUILD_TIMESTAMP), \

                $(shell date -u -d '$(KBUILD_BUILD_TIMESTAMP)' +%Y-%m-%d), \

                $(shell git log -1 --pretty="format:%cd" \

                    --date=short --no-show-signature $<)))



ifdef USE_ASCIIDOCTOR

$(OUTPUT)%.1 $(OUTPUT)%.5 $(OUTPUT)%.7 : %.txt