linux-kernel - [PATCH v6 01/13] perf dso: Move libunwind dso

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Message-Id: <20250318033150.119174-2-irogers@google.com>
Date: Mon, 17 Mar 2025 20:31:38 -0700
From: Ian Rogers <irogers@...gle.com>
To: Ian Rogers <irogers@...gle.com>, Peter Zijlstra <peterz@...radead.org>, 
	Ingo Molnar <mingo@...hat.com>, Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Adrian Hunter <adrian.hunter@...el.com>, Kan Liang <kan.liang@...ux.intel.com>, 
	John Garry <john.g.garry@...cle.com>, Will Deacon <will@...nel.org>, 
	James Clark <james.clark@...aro.org>, Mike Leach <mike.leach@...aro.org>, 
	Leo Yan <leo.yan@...ux.dev>, guoren <guoren@...nel.org>, 
	Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>, 
	Albert Ou <aou@...s.berkeley.edu>, Charlie Jenkins <charlie@...osinc.com>, 
	Bibo Mao <maobibo@...ngson.cn>, Huacai Chen <chenhuacai@...nel.org>, 
	Catalin Marinas <catalin.marinas@....com>, Jiri Slaby <jirislaby@...nel.org>, 
	"Björn Töpel" <bjorn@...osinc.com>, Howard Chu <howardchu95@...il.com>, linux-kernel@...r.kernel.org, 
	linux-perf-users@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
	"linux-csky@...r.kernel.org" <linux-csky@...r.kernel.org>, linux-riscv@...ts.infradead.org, 
	Arnd Bergmann <arnd@...db.de>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH v6 01/13] perf dso: Move libunwind dso_data variables into ifdef

The variables elf_base_addr, debug_frame_offset, eh_frame_hdr_addr and
eh_frame_hdr_offset are only accessed in unwind-libunwind-local.c
which is conditionally built on having libunwind support. Make the
variables conditional on libunwind support too.

Reviewed-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/util/dso.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h
index 84d5aac666aa..14e4ac21a1d3 100644
--- a/tools/perf/util/dso.h
+++ b/tools/perf/util/dso.h
@@ -155,10 +155,12 @@ struct dso_data {
 	int		 status;
 	u32		 status_seen;
 	u64		 file_size;
+#ifdef HAVE_LIBUNWIND_SUPPORT
 	u64		 elf_base_addr;
 	u64		 debug_frame_offset;
 	u64		 eh_frame_hdr_addr;
 	u64		 eh_frame_hdr_offset;
+#endif
 };
 
 struct dso_bpf_prog {
-- 
2.49.0.rc1.451.g8f38331e32-goog