From nobody Sun Feb 8 12:36:31 2026 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3503712C7F9; Fri, 16 Aug 2024 06:45:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.10 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723790753; cv=none; b=TOm3f+rG1aiv+4QQ1yLkNcZmQDOy+AZZ+/EtGKtUxHK9R40/Ca8GCaMbgzz1xaIhmgkV8N8vY2mPRLEB2kQmHJznIxrNeRZFwdtnYBTPMogu7XjMrY4jmxMrYni/MMtEgDCxaX7ZjkVvGB24T5AUquZ17uGhPhDIVPE607MRwFc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723790753; c=relaxed/simple; bh=7NPeKnDoJ/P82slpVaSMciOgj75XI6ViCTDAXn0KGrA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=eBTYfnHVzKkzDkC4nJ5eN7tMsck6kQoBUwjDM4gJVINH/DrjLjOAHR8+qP1A26vZbFIwVDlRywil64hkZFXHaIEqTTRoSirJ+BIM44KhgHpWAbORbwtaK/vm06fOUb2Agg80tFidkDx1cVwtgTKSz3EFj54puLdvaoAmYSmJCek= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=Cs5Uu5Yk; arc=none smtp.client-ip=198.175.65.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="Cs5Uu5Yk" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1723790752; x=1755326752; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=7NPeKnDoJ/P82slpVaSMciOgj75XI6ViCTDAXn0KGrA=; b=Cs5Uu5YkG79FfNvQNpez62mSYDXhNAEiYWuuwjlIcoroBOlr6wxoX+O2 wx1Larf3J6RQtkQaK3j7FdeaG4ONAM0Ptdjov59aUAI13ov4mkFOG/rMb Q48O/Q0cYhvcdPvRmTiiAm+QpK2wYa+qXGf55Kcz9T27SKrw6rtJjwv36 K3imNdCDBWMx5cx5vDl27bXtIoi7MyJDivBJIZQnzHggDfEgH5WuSX3rt HUIsjNbPhselFNWz1B4WWD1TvD5Ya10C0M5W6w7uz3r/dmMp/3FYLVGfj bKtvhqzBk3K9K2JAkv2DpIhjwyM6EX120yiT5mbXguf08oEa2LLlKyXx5 A==; X-CSE-ConnectionGUID: m65m93loSaaPHJRaW/pJ1A== X-CSE-MsgGUID: bRXpYF13RPWqlJYaq+/4iQ== X-IronPort-AV: E=McAfee;i="6700,10204,11165"; a="39530770" X-IronPort-AV: E=Sophos;i="6.10,150,1719903600"; d="scan'208";a="39530770" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Aug 2024 23:45:52 -0700 X-CSE-ConnectionGUID: FOaWWgknTkO2Syj3YrtOZQ== X-CSE-MsgGUID: cMxC8OtmTK601jyX7ia21Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,150,1719903600"; d="scan'208";a="60150033" Received: from emr.sh.intel.com ([10.112.229.56]) by orviesa007.jf.intel.com with ESMTP; 15 Aug 2024 23:45:49 -0700 From: Dapeng Mi To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Ian Rogers , Adrian Hunter , Alexander Shishkin , Kan Liang Cc: linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, Yongwei Ma , Dapeng Mi , Dapeng Mi Subject: [Patch v4 4/6] perf tests: Add leader sampling test in record tests Date: Fri, 16 Aug 2024 12:29:36 +0000 Message-Id: <20240816122938.32228-5-dapeng1.mi@linux.intel.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240816122938.32228-1-dapeng1.mi@linux.intel.com> References: <20240816122938.32228-1-dapeng1.mi@linux.intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add leader sampling test to validate event counts are captured into record and the count value is consistent. Suggested-by: Kan Liang Signed-off-by: Dapeng Mi --- tools/perf/tests/shell/record.sh | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/tools/perf/tests/shell/record.sh b/tools/perf/tests/shell/reco= rd.sh index 3d1a7759a7b2..8e3e66780fed 100755 --- a/tools/perf/tests/shell/record.sh +++ b/tools/perf/tests/shell/record.sh @@ -17,6 +17,7 @@ skip_test_missing_symbol ${testsym} =20 err=3D0 perfdata=3D$(mktemp /tmp/__perf_test.perf.data.XXXXX) +script_output=3D$(mktemp /tmp/__perf_test.perf.data.XXXXX.script) testprog=3D"perf test -w thloop" cpu_pmu_dir=3D"/sys/bus/event_source/devices/cpu*" br_cntr_file=3D"/caps/branch_counter_nr" @@ -190,11 +191,38 @@ test_branch_counter() { echo "Basic branch counter test [Success]" } =20 +test_leader_sampling() { + echo "Basic leader sampling test" + if ! perf record -o "${perfdata}" -e "{branches,branches}:Su" perf test = -w brstack 2> /dev/null + then + echo "Leader sampling [Failed record]" + err=3D1 + return + fi + index=3D0 + perf script -i "${perfdata}" > $script_output + while IFS=3D read -r line + do + # Check if the two branches counts are equal in each record + branches=3D$(echo $line | awk '{for(i=3D1;i<=3DNF;i++) if($i=3D=3D"bra= nches:") print $(i-1)}') + if [ $(($index%2)) -ne 0 ] && [ ${branches}x !=3D ${prev_branches}x ] + then + echo "Leader sampling [Failed inconsistent branches count]" + err=3D1 + return + fi + index=3D$(($index+1)) + prev_branches=3D$branches + done < $script_output + echo "Basic leader sampling test [Success]" +} + test_per_thread test_register_capture test_system_wide test_workload test_branch_counter +test_leader_sampling =20 cleanup exit $err --=20 2.40.1