From 61b3d2107d2aae5dc86bbbbd0c9f6151d694cdc4 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Sat, 13 May 2023 22:37:43 +0200 Subject: 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: Ben Hutchings Acked-by: Ian Rogers Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Salvatore Bonaccorso Link: https://lore.kernel.org/r/ZF/1F1P+b9qZ/vVH@decadent.org.uk Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/Makefile | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/tools/perf/Documentation/Makefile b/tools/perf/Documentation/Makefile index 8a7d7078e386..4407b106d977 100644 --- a/tools/perf/Documentation/Makefile +++ b/tools/perf/Documentation/Makefile @@ -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 -- cgit