From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) (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 CBD853A3E8B; Wed, 24 Jun 2026 09:38:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.9 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782293948; cv=none; b=nvBQ7NyteaZ5h3ZL/v/QAFPdR8Y5LNsteF63/VFn9YSgIDWnQVejmEUlicx9RHxyYevKJGApWy53KxkBwpTqBY9dXYRNe7qrnGs8cV37wkOAcuC5L0mYCpzBZuO4tkq0IEhPeSey0i0Zj2VpIpMuG91zYs1NoUD8tji+8Lb+jiA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782293948; c=relaxed/simple; bh=HbGpwqHngTix9zuzjwtgAwowR/puI6WNCd6x5rm9r3k=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=smLr5UrV8P7jjgHPuco793hF1XZGLom/fYoKa0m1q1KcBrc8LvcBSMrK/tjNCMz74MmQUE6CLc9/iu92Mqc5u1v4lJhc3FordFP0m/aisCei1QCHJ/JW5vBHegh/1Iq8IzZjHcALcVpgcLGGBgTIjhUpr5RIgd1KpRUcsnGaHME= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=Se5CX/RJ; arc=none smtp.client-ip=198.175.65.9 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass 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="Se5CX/RJ" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1782293942; x=1813829942; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=HbGpwqHngTix9zuzjwtgAwowR/puI6WNCd6x5rm9r3k=; b=Se5CX/RJMg7lRrpZHy6zNp8fvrXS0q/wdNm8AUgNb7Au3IOTD0EywBBF AoBr3dGyNqPrm1eYneoPYIuW2XWE5w5ITn0nOUiRBnCxw2L1Llnl2o/y7 mYaFMHeEWLX1i+5P/6dzU++Lvo+IQu5oHVBpvPKpoiovZZzpH9bbP8XBd ahU8k3gjm3XqW8LMMBC5BGZLzHfx1p65gHttsD+TgVT7LLx0ko4NOcOw7 sTUfNTz6rsS9Ql9LxXXYR7m+3SAsINllUby4x4tv4gxc8f3qhBpJV8x9o bkLZ9AvUBltARdE2vkBx9c7gino6I58adpUAFCjnl/0KNZP7Ixfm/Qbsg A==; X-CSE-ConnectionGUID: NoJSe646TJybZrh1UwkoLA== X-CSE-MsgGUID: 98iiU8ieR3GvqQkD4bHluQ== X-IronPort-AV: E=McAfee;i="6800,10657,11826"; a="105844686" X-IronPort-AV: E=Sophos;i="6.24,222,1774335600"; d="scan'208";a="105844686" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Jun 2026 02:38:59 -0700 X-CSE-ConnectionGUID: +n99EoZzQfWvPYFC2NLmcQ== X-CSE-MsgGUID: M2L4fjyqSK2bUM0VE1yIXw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.24,222,1774335600"; d="scan'208";a="243410101" Received: from spr.sh.intel.com ([10.112.229.196]) by fmviesa009.fm.intel.com with ESMTP; 24 Jun 2026 02:38:55 -0700 From: Dapeng Mi To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Ian Rogers , Adrian Hunter , Alexander Shishkin Cc: linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, Zide Chen , Falcon Thomas , Dapeng Mi , Xudong Hao , Dapeng Mi Subject: [Patch v4] perf tests: Add auto counter reload (ACR) sampling test Date: Wed, 24 Jun 2026 17:33:16 +0800 Message-Id: <20260624093316.1439582-1-dapeng1.mi@linux.intel.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add auto counter reload sampling test to verify that the intended event records can be captured and the self-reloaded events won't generate any records. Signed-off-by: Dapeng Mi --- V4: Remove model-specific ACR sampling test in ratio_to_prev test to avoid false positive. Some hybrid platforms only support ACR on E-cores, e.g., PTL. If the test process is scheduled on P-core, it leads to false positive since P-core doesn't support ACR. test_acr_sampling() is already fair enough to validate ACR sampling functionalities. History: V3: https://lore.kernel.org/all/20260421045511.2401316-1-dapeng1.mi@linux.intel.com/ V2: https://lore.kernel.org/all/20260420025501.2133495-1-dapeng1.mi@linux.intel.com/ v1: https://lore.kernel.org/all/20260413010920.546501-1-dapeng1.mi@linux.intel.com/ tools/perf/tests/shell/record.sh | 43 ++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/tools/perf/tests/shell/record.sh b/tools/perf/tests/shell/record.sh index 7cb81cf3444a..5819f11ad3a9 100755 --- a/tools/perf/tests/shell/record.sh +++ b/tools/perf/tests/shell/record.sh @@ -402,6 +402,48 @@ test_callgraph() { echo "Callgraph test [Success]" } +test_acr_sampling() { + events="{instructions/period=40000,acr_mask=0x2/u,cycles/period=20000,acr_mask=0x3/u}" + pebs_events="{instructions/period=40000,acr_mask=0x2/pu,cycles/period=20000,acr_mask=0x3/u}" + echo "Auto counter reload (ACR) sampling test" + if ! perf record -o "${perfdata}" -e "${events}" ${testprog} 2> /dev/null + then + echo "Auto counter reload sampling [Skipped not supported]" + return + fi + if ! perf script -i "${perfdata}" -F event | grep -q "instructions" + then + echo "Auto counter reload sampling [Failed missing instructions event]" + err=1 + return + fi + if perf script -i "${perfdata}" -F event | grep -q "cycles" + then + echo "Auto counter reload sampling [Failed cycles event shouldn't be sampled]" + err=1 + return + fi + if ! perf record -o "${perfdata}" -e "${pebs_events}" ${testprog} 2> /dev/null + then + echo "Auto counter reload PEBS sampling [Skipped not supported]" + echo "Auto counter reload sampling [Success]" + return + fi + if ! perf script -i "${perfdata}" -F event | grep -q "instructions" + then + echo "Auto counter reload PEBS sampling [Failed missing instructions event]" + err=1 + return + fi + if perf script -i "${perfdata}" -F event | grep -q "cycles" + then + echo "Auto counter reload PEBS sampling [Failed cycles event shouldn't be sampled]" + err=1 + return + fi + echo "Auto counter reload sampling [Success]" +} + test_ratio_to_prev() { echo "ratio-to-prev test" if ! perf record -o /dev/null -e "{instructions, cycles/period=100000,ratio-to-prev=0.5/}" \ @@ -457,6 +499,7 @@ test_leader_sampling test_topdown_leader_sampling test_precise_max test_callgraph +test_acr_sampling test_ratio_to_prev # restore the default value base-commit: 40db90ac9f66c8246c1746c56d397283d161655c -- 2.34.1