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Tue, 26 May 2020 03:53:14 -0700 (PDT) From: Mike Leach To: linux-arm-kernel@lists.infradead.org, coresight@lists.linaro.org, linux-kernel@vger.kernel.org, acme@kernel.org Subject: [PATCH v4 1/1] perf: cs-etm: Allow no CoreSight sink to be specified on command line Date: Tue, 26 May 2020 11:53:10 +0100 Message-Id: <20200526105310.9706-2-mike.leach@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200526105310.9706-1-mike.leach@linaro.org> References: <20200526105310.9706-1-mike.leach@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200526_035316_457045_3DD7C4CB X-CRM114-Status: GOOD ( 15.58 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peterz@infradead.org, mingo@redhat.com, Mike Leach , mathieu.poirier@linaro.org, suzuki.poulose@arm.com MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Adjust the handling of the session sink selection to allow no sink to be selected on the command line. This then forwards the sink selection to the CoreSight infrastructure which will attempt to select a sink based on the default sink select priorities. Signed-off-by: Mike Leach --- tools/perf/arch/arm/util/cs-etm.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/tools/perf/arch/arm/util/cs-etm.c b/tools/perf/arch/arm/util/cs-etm.c index 941f814820b8..ed9ea2c60f27 100644 --- a/tools/perf/arch/arm/util/cs-etm.c +++ b/tools/perf/arch/arm/util/cs-etm.c @@ -242,10 +242,10 @@ static int cs_etm_set_sink_attr(struct perf_pmu *pmu, } /* - * No sink was provided on the command line - for _now_ treat - * this as an error. + * No sink was provided on the command line - allow the CoreSight + * system to look for a default */ - return ret; + return 0; } static int cs_etm_recording_options(struct auxtrace_record *itr, -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel