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From:   Nicholas Fraser <nfraser@codeweavers.com>
Subject: [PATCH 4/4] perf report: Fix return value when loading PE DSO
To:     Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Jiri Olsa <jolsa@redhat.com>,
        Namhyung Kim <namhyung@kernel.org>,
        Ian Rogers <irogers@google.com>,
        "Frank Ch. Eigler" <fche@redhat.com>,
        Song Liu <songliubraving@fb.com>,
        Adrian Hunter <adrian.hunter@intel.com>,
        Kim Phillips <kim.phillips@amd.com>,
        Tommi Rantala <tommi.t.rantala@nokia.com>,
        Remi Bernon <rbernon@codeweavers.com>,
        linux-kernel@vger.kernel.org
Cc:     Ulrich Czekalla <uczekalla@codeweavers.com>,
        Huw Davies <huw@codeweavers.com>
Message-ID: <1671b43b-09c3-1911-dbf8-7f030242fbf7@codeweavers.com>
Date:   Wed, 10 Feb 2021 14:18:02 -0500
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The first time dso__load() was called on a PE file it always returned -1
error. This caused the first call to map__find_symbol() to always fail
on a PE file so the first sample from each PE file always had symbol
<unknown>. Subsequent samples succeed however because the DSO is already
loaded.

This fixes dso__load() to return 0 when successfully loading a DSO with
libbfd.

Signed-off-by: Nicholas Fraser <nfraser@codeweavers.com>
---
 tools/perf/util/symbol.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index aa9ae875b995..492c873713cc 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1861,8 +1861,10 @@ int dso__load(struct dso *dso, struct map *map)
 		if (nsexit)
 			nsinfo__mountns_enter(dso->nsinfo, &nsc);
 
-		if (bfdrc == 0)
+		if (bfdrc == 0) {
+			ret = 0;
 			break;
+		}
 
 		if (!is_reg || sirc < 0)
 			continue;
-- 
2.30.0