From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 53D7FC433F5 for ; Wed, 5 Oct 2022 14:05:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230077AbiJEOF2 (ORCPT ); Wed, 5 Oct 2022 10:05:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59544 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229928AbiJEOFZ (ORCPT ); Wed, 5 Oct 2022 10:05:25 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 0CA1A75FD0; Wed, 5 Oct 2022 07:05:17 -0700 (PDT) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 48B86113E; Wed, 5 Oct 2022 07:05:24 -0700 (PDT) Received: from e121896.arm.com (unknown [10.57.3.4]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 33AEE3F792; Wed, 5 Oct 2022 07:05:15 -0700 (PDT) From: James Clark To: coresight@lists.linaro.org, acme@kernel.org Cc: suzuki.poulose@arm.com, linux-perf-users@vger.kernel.org, mathieu.poirier@linaro.org, mike.leach@linaro.org, leo.yan@linaro.org, James Clark , Peter Zijlstra , Ingo Molnar , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , linux-kernel@vger.kernel.org Subject: [PATCH] perf test: Fix test_arm_coresight.sh failures on Juno Date: Wed, 5 Oct 2022 15:05:08 +0100 Message-Id: <20221005140508.1537277-1-james.clark@arm.com> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This test commonly fails on Arm Juno because the instruction interval is large enough to miss generating any samples for Perf in system-wide mode. Fix this by lowering the interval until a comfortable number of Perf instructions are generated. The test is still quick to run because only a small amount of trace is gathered. Before: sudo ./perf test coresight -vvv ... Recording trace with system wide mode Looking at perf.data file for dumping branch samples: Looking at perf.data file for reporting branch samples: Looking at perf.data file for instruction samples: CoreSight system wide testing: FAIL ... After: sudo ./perf test coresight -vvv ... Recording trace with system wide mode Looking at perf.data file for dumping branch samples: Looking at perf.data file for reporting branch samples: Looking at perf.data file for instruction samples: CoreSight system wide testing: PASS ... Signed-off-by: James Clark --- tools/perf/tests/shell/test_arm_coresight.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/tests/shell/test_arm_coresight.sh b/tools/perf/tests/shell/test_arm_coresight.sh index e4cb4f1806ff..daad786cf48d 100755 --- a/tools/perf/tests/shell/test_arm_coresight.sh +++ b/tools/perf/tests/shell/test_arm_coresight.sh @@ -70,7 +70,7 @@ perf_report_instruction_samples() { # 68.12% touch libc-2.27.so [.] _dl_addr # 5.80% touch libc-2.27.so [.] getenv # 4.35% touch ld-2.27.so [.] _dl_fixup - perf report --itrace=i1000i --stdio -i ${perfdata} 2>&1 | \ + perf report --itrace=i20i --stdio -i ${perfdata} 2>&1 | \ egrep " +[0-9]+\.[0-9]+% +$1" > /dev/null 2>&1 } -- 2.28.0