linux-kernel - [RFC PATCH 4/6] perf tools: Add flag for tracking warnings of missing DSOs

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Message-Id: <20210729155805.2830-5-james.clark@arm.com>
Date:   Thu, 29 Jul 2021 16:58:03 +0100
From:   James Clark <james.clark@....com>
To:     acme@...nel.org, mathieu.poirier@...aro.org,
        coresight@...ts.linaro.org, linux-perf-users@...r.kernel.org
Cc:     leo.yan@...aro.org, suzuki.poulose@....com, mike.leach@...aro.org,
        James Clark <james.clark@....com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        John Garry <john.garry@...wei.com>,
        Will Deacon <will@...nel.org>, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: [RFC PATCH 4/6] perf tools: Add flag for tracking warnings of missing DSOs

Auxtrace support may need DSOs for decoding (for example Arm
Coresight). If one of these is missing it would make sense to
warn once for each one that's missing, but not flood the output
with every address as there could be thousands of lookups.

This flag will allow tracking whether a warning was shown for
each DSO.

Signed-off-by: James Clark <james.clark@....com>
---
 tools/perf/util/dso.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h
index 52e7101c5609..83723ba11dc8 100644
--- a/tools/perf/util/dso.h
+++ b/tools/perf/util/dso.h
@@ -170,6 +170,7 @@ struct dso {
 	u8		 has_srcline:1;
 	u8		 hit:1;
 	u8		 annotate_warned:1;
+	u8		 auxtrace_warned:1;
 	u8		 short_name_allocated:1;
 	u8		 long_name_allocated:1;
 	u8		 is_64_bit:1;
-- 
2.28.0