linux-kernel - [PATCH 19/26] perf tools: Add buildid-list support for mmap3

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Message-Id: <20200913210313.1985612-20-jolsa@kernel.org>
Date:   Sun, 13 Sep 2020 23:03:06 +0200
From:   Jiri Olsa <jolsa@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Ingo Molnar <mingo@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Michael Petlan <mpetlan@...hat.com>,
        Song Liu <songliubraving@...com>,
        "Frank Ch. Eigler" <fche@...hat.com>,
        Ian Rogers <irogers@...gle.com>,
        Stephane Eranian <eranian@...gle.com>,
        Alexey Budankov <alexey.budankov@...ux.intel.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Adrian Hunter <adrian.hunter@...el.com>
Subject: [PATCH 19/26] perf tools: Add buildid-list support for mmap3

Add buildid-list support for mmap3 so we can display
hit dso objects buildid with filename for mmap3 data:

  $ perf buildid-list
  1805c738c8f3ec0f47b7ea09080c28f34d18a82b /usr/lib64/ld-2.31.so
  d278249792061c6b74d1693ca59513be1def13f2 /usr/lib64/libc-2.31.so

Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/builtin-buildid-list.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tools/perf/builtin-buildid-list.c b/tools/perf/builtin-buildid-list.c
index e3ef75583514..adcc64478ec1 100644
--- a/tools/perf/builtin-buildid-list.c
+++ b/tools/perf/builtin-buildid-list.c
@@ -57,6 +57,7 @@ static int perf_session__list_build_ids(bool force, bool with_hits)
 		.mode  = PERF_DATA_MODE_READ,
 		.force = force,
 	};
+	bool has_build_id;
 
 	symbol__elf_init();
 	/*
@@ -77,6 +78,15 @@ static int perf_session__list_build_ids(bool force, bool with_hits)
 	    perf_header__has_feat(&session->header, HEADER_AUXTRACE))
 		with_hits = false;
 
+	has_build_id = perf_header__has_feat(&session->header, HEADER_BUILD_ID);
+
+	/*
+	 * We don't really show non hit dsos, keep that also for mmap3
+	 * buildid data, we don't care about non hit dsos anyway.
+	 */
+	if (!has_build_id)
+		with_hits = true;
+
 	/*
 	 * in pipe-mode, the only way to get the buildids is to parse
 	 * the record stream. Buildids are stored as RECORD_HEADER_BUILD_ID
-- 
2.26.2