linux-kernel - [PATCH 24/25] perf buildid-list: Add support for mmap2's buildid events

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Message-Id: <20201123230512.2097312-25-jolsa@kernel.org>
Date:   Tue, 24 Nov 2020 00:05:11 +0100
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>,
        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 24/25] perf buildid-list: Add support for mmap2's buildid events

Add buildid-list support for mmap2's build id data, so we can
display build ids for dso objects for data without the build
id cache update.

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

By default only dso objects with hits are shown.

Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/builtin-buildid-list.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/perf/builtin-buildid-list.c b/tools/perf/builtin-buildid-list.c
index e3ef75583514..87f5b1a4a7fa 100644
--- a/tools/perf/builtin-buildid-list.c
+++ b/tools/perf/builtin-buildid-list.c
@@ -77,6 +77,9 @@ static int perf_session__list_build_ids(bool force, bool with_hits)
 	    perf_header__has_feat(&session->header, HEADER_AUXTRACE))
 		with_hits = false;
 
+	if (!perf_header__has_feat(&session->header, HEADER_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