From nobody Wed Dec 17 10:45:09 2025 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.8]) (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 BBAA015EFAE; Fri, 12 Jul 2024 10:21:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.8 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720779704; cv=none; b=i5A1QdXtHr2ZV3eaaPgcKxL/OwZBKGk1PHkj+KCZx/qYK5750CrwZGWjLFaADTul3gDDlE5rF3xWEVYDFmnEyGxXMhD7kse6VafpbqeQhiyvp0hjdRU32TBvgH79t3T+Clizl3Oa+OH/BNgbHZTzIJ9SpFFI46rihuNm69561Bs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720779704; c=relaxed/simple; bh=7NPeKnDoJ/P82slpVaSMciOgj75XI6ViCTDAXn0KGrA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=CnKVglxDu6RNyC6eZDD7qXRJ5tPca24xNhA1GaQ2bGyvlZBYu0UuefKhB1lWPg+0c4l5fQcd/wVsLTmvVdI9F9WNj4EUJyI/9rSG6GNE55fGY4wMn+h14cjB9d/qKUnhDubC3uyymxaNzK1M7e+SRT669zDQH/NsLOe4hLr6At4= 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=jLtCa7bi; arc=none smtp.client-ip=192.198.163.8 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="jLtCa7bi" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1720779703; x=1752315703; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=7NPeKnDoJ/P82slpVaSMciOgj75XI6ViCTDAXn0KGrA=; b=jLtCa7bifudI+CB0oo34xYpHAZKH0ZidLvUDQHirG5qI1dU0rbaS51Gs x23fFFoCQSJSteyunAj1S9nXgny8qSyRXbFTQOX7lZ6uhd66EQSuWNwAI n+tlF+8vYYa2l53rZRZyF0Zpd35EZpAVUNBSwvZbZD9MGr97++60M7Cji KaXhmLagW033vDkguqJcYd0aGaNnhb1p3zc9nkZxTQ03QVHjLlbaKTQoc GRYiI1A22jvddcSSkvEf18Ool5hlZu79W86jsz2sUrYCc2DgUOOn4zUFI 0GYVxisn3aQ2VLRB70tRgKETJTlQJTjh1dXu3+8jWWfJ1yHha4WSgsz/j A==; X-CSE-ConnectionGUID: ywjUGzueQg+AhrKY7aNJRw== X-CSE-MsgGUID: S/X2ITp/Ssy5dj1Cgc8+RQ== X-IronPort-AV: E=McAfee;i="6700,10204,11130"; a="35756786" X-IronPort-AV: E=Sophos;i="6.09,202,1716274800"; d="scan'208";a="35756786" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by fmvoesa102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Jul 2024 03:21:43 -0700 X-CSE-ConnectionGUID: hDF+Il1bThaZ4B4g7PJcLA== X-CSE-MsgGUID: A2uYjbHrRaiiPLfSzNPF1Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,202,1716274800"; d="scan'208";a="79576254" Received: from emr.sh.intel.com ([10.112.229.56]) by orviesa002.jf.intel.com with ESMTP; 12 Jul 2024 03:21:39 -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 v3 4/5] perf tests: Add leader sampling test in record tests Date: Fri, 12 Jul 2024 17:03:38 +0000 Message-Id: <20240712170339.185824-5-dapeng1.mi@linux.intel.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240712170339.185824-1-dapeng1.mi@linux.intel.com> References: <20240712170339.185824-1-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