linux-kernel - [PATCH 2/4] perf bpf-filter: Add build dependency to header files

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Message-ID: <20240826221045.1202305-3-namhyung@kernel.org>
Date: Mon, 26 Aug 2024 15:10:43 -0700
From: Namhyung Kim <namhyung@...nel.org>
To: Arnaldo Carvalho de Melo <acme@...nel.org>,
	Ian Rogers <irogers@...gle.com>,
	Kan Liang <kan.liang@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-perf-users@...r.kernel.org,
	Stephane Eranian <eranian@...gle.com>
Subject: [PATCH 2/4] perf bpf-filter: Add build dependency to header files

The flex and bison files need to be recompiled when one of these header
filters are changed.

 * util/bpf-filter.h
 * util/bpf_skel/sample-filter.h

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/util/Build | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index b87f918bdfe7..260cec2f6c0b 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -278,12 +278,12 @@ $(OUTPUT)util/pmu-bison.c $(OUTPUT)util/pmu-bison.h: util/pmu.y
 	$(Q)$(call echo-cmd,bison)$(BISON) -v $< -d $(PARSER_DEBUG_BISON) $(BISON_FILE_PREFIX_MAP) \
 		-o $(OUTPUT)util/pmu-bison.c -p perf_pmu_
 
-$(OUTPUT)util/bpf-filter-flex.c $(OUTPUT)util/bpf-filter-flex.h: util/bpf-filter.l $(OUTPUT)util/bpf-filter-bison.c
+$(OUTPUT)util/bpf-filter-flex.c $(OUTPUT)util/bpf-filter-flex.h: util/bpf-filter.l $(OUTPUT)util/bpf-filter-bison.c util/bpf-filter.h util/bpf_skel/sample-filter.h
 	$(call rule_mkdir)
 	$(Q)$(call echo-cmd,flex)$(FLEX) -o $(OUTPUT)util/bpf-filter-flex.c \
 		--header-file=$(OUTPUT)util/bpf-filter-flex.h $(PARSER_DEBUG_FLEX) $<
 
-$(OUTPUT)util/bpf-filter-bison.c $(OUTPUT)util/bpf-filter-bison.h: util/bpf-filter.y
+$(OUTPUT)util/bpf-filter-bison.c $(OUTPUT)util/bpf-filter-bison.h: util/bpf-filter.y util/bpf-filter.h util/bpf_skel/sample-filter.h
 	$(call rule_mkdir)
 	$(Q)$(call echo-cmd,bison)$(BISON) -v $< -d $(PARSER_DEBUG_BISON) $(BISON_FILE_PREFIX_MAP) \
 		-o $(OUTPUT)util/bpf-filter-bison.c -p perf_bpf_filter_
-- 
2.46.0.295.g3b9ea8a38a-goog