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From:   James Clark <james.clark@arm.com>
To:     linux-perf-users@vger.kernel.org
Cc:     Al.Grant@arm.com, James Clark <james.clark@arm.com>,
        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@kernel.org>,
        Namhyung Kim <namhyung@kernel.org>,
        John Garry <john.g.garry@oracle.com>,
        Will Deacon <will@kernel.org>,
        Mike Leach <mike.leach@linaro.org>,
        Leo Yan <leo.yan@linaro.org>,
        Mathieu Poirier <mathieu.poirier@linaro.org>,
        Suzuki K Poulose <suzuki.poulose@arm.com>,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        coresight@lists.linaro.org
Subject: [PATCH 1/5] perf: cs-etm: Print unknown header version as an error
Date:   Mon, 12 Dec 2022 15:55:09 +0000
Message-Id: <20221212155513.2259623-2-james.clark@arm.com>
In-Reply-To: <20221212155513.2259623-1-james.clark@arm.com>
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This is an error rather than just for the raw trace dump so always print
it as an error. Also remove the duplicate header version check.

Signed-off-by: James Clark <james.clark@arm.com>
---
 tools/perf/util/cs-etm.c | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
index 16db965ac995..aeb1e30888db 100644
--- a/tools/perf/util/cs-etm.c
+++ b/tools/perf/util/cs-etm.c
@@ -2623,14 +2623,7 @@ static void cs_etm__print_auxtrace_info(__u64 *val, int num)
 {
 	int i, cpu = 0, version, err;
 
-	/* bail out early on bad header version */
 	version = val[0];
-	if (version > CS_HEADER_CURRENT_VERSION) {
-		/* failure.. return */
-		fprintf(stdout, "	Unknown Header Version = %x, ", version);
-		fprintf(stdout, "Version supported <= %x\n", CS_HEADER_CURRENT_VERSION);
-		return;
-	}
 
 	for (i = 0; i < CS_HEADER_VERSION_MAX; i++)
 		fprintf(stdout, cs_etm_global_header_fmts[i], val[i]);
@@ -2916,9 +2909,8 @@ int cs_etm__process_auxtrace_info(union perf_event *event,
 	/* Look for version of the header */
 	hdr_version = ptr[0];
 	if (hdr_version > CS_HEADER_CURRENT_VERSION) {
-		/* print routine will print an error on bad version */
-		if (dump_trace)
-			cs_etm__print_auxtrace_info(auxtrace_info->priv, 0);
+		pr_err("\nCS ETM Trace: Unknown Header Version = %#" PRIx64, hdr_version);
+		pr_err(", version supported <= %x\n", CS_HEADER_CURRENT_VERSION);
 		return -EINVAL;
 	}
 
-- 
2.25.1