From nobody Sun Dec 28 04:58:42 2025 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.13]) (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 1B965152E0F; Fri, 12 Apr 2024 21:08:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.13 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712956099; cv=none; b=CR7Ap3jCtrlDq6TvsUdvvEJ+HTcDCCGGPyPnvMS0XRgcB30G211X74CJKhHSMrW4VsYzs+fchHKo/o41ij2DmOO4gD7eN3BFfIQXaUjUfbdKQ15ccYBUbn/FB/vGbAtvGtlzl4BshG0ncFTuXdXPNL1CCH4/auX4u0qmuVygTRU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712956099; c=relaxed/simple; bh=SLRT/YXI45DriY5Ez7bnNSFDk+ZX/MfZJIlKThgJlpo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=STs532n8rtLNapoRpwnbAWvSvEVBlj8ksMbFlR2qdlO6yUbqLECBI4f/PeYbon0x0gYlQhsi00PQq6vjgaVd6JupSaDVoewlhVU/iW+kWlhwajxaUGmTBHsdsQHECBxyNAdIBmPAr7N+6u+TNfi5FQPRRJT+Cuq15+vIe37xzjw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=S9JR3dqg; arc=none smtp.client-ip=198.175.65.13 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="S9JR3dqg" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1712956098; x=1744492098; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=SLRT/YXI45DriY5Ez7bnNSFDk+ZX/MfZJIlKThgJlpo=; b=S9JR3dqgFcs1uLSZHjEky6YDOKt5GjzkFyghurYh9ees58qjKM4zo2kO cfcHvB+4NIXLwboXP1n36YE0qCshFtaI4Z431rW6g6hMAXmEUnttq6sDt yDDzdCNz9j4FTCJ2akk9Sev46k8hVD9qxrDXjgViy96Alj6U6dAsMouci /SskbRmmxdhyvTbofya6Zv64QusWGcOJVxiMxettAdzqeyQ9DAqKpsAcE guR66npLcz/YIkxz8r9od7NkEsy21hwbetzNm8tzw3cgXHK5Tr7J6gQhP iAFVP/P2laY4FNa9doWjnunAGqvjmmuMOGbA//paaHDrCMPIaXSgpAHVS g==; X-CSE-ConnectionGUID: j83IAigkQAyJXzlZfgLi7Q== X-CSE-MsgGUID: WP9QZJH3T7uZ8A5pBmfOiQ== X-IronPort-AV: E=McAfee;i="6600,9927,11042"; a="19575488" X-IronPort-AV: E=Sophos;i="6.07,197,1708416000"; d="scan'208";a="19575488" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Apr 2024 14:08:11 -0700 X-CSE-ConnectionGUID: sqyXSFLWTg+rLmERYp2xNg== X-CSE-MsgGUID: F1OduXFwQFO6CrRLWdmANw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,197,1708416000"; d="scan'208";a="21772114" Received: from b49691a74b80.jf.intel.com ([10.165.54.183]) by orviesa006.jf.intel.com with ESMTP; 12 Apr 2024 14:08:11 -0700 From: weilin.wang@intel.com To: weilin.wang@intel.com, Ian Rogers , Kan Liang , Namhyung Kim , Arnaldo Carvalho de Melo , Peter Zijlstra , Ingo Molnar , Alexander Shishkin , Jiri Olsa , Adrian Hunter Cc: linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, Perry Taylor , Samantha Alt , Caleb Biggers Subject: [RFC PATCH v5 12/16] perf stat: Handle NMI in hardware-grouping Date: Fri, 12 Apr 2024 14:07:52 -0700 Message-ID: <20240412210756.309828-13-weilin.wang@intel.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20240412210756.309828-1-weilin.wang@intel.com> References: <20240412210756.309828-1-weilin.wang@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" From: Weilin Wang Add an easy nmi watchdog support in grouping. When nmi watchdog is enabled, we reduce the total num of events could be assigned to one group by 1. A more efficient solution will be added in later. Reviewed-by: Ian Rogers Signed-off-by: Weilin Wang --- tools/perf/util/metricgroup.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c index 9548654c9f6d..31036035484c 100644 --- a/tools/perf/util/metricgroup.c +++ b/tools/perf/util/metricgroup.c @@ -1993,6 +1993,10 @@ static int insert_new_group(struct list_head *head, size_t counters_num_fixed) { INIT_LIST_HEAD(&new_group->event_head); + if (sysctl__nmi_watchdog_enabled()) { + pr_debug("NMI watchdog is enabled. Reduce num of counters by 1\n"); + counters_num_gp -=3D 1; + } fill_counter_bitmap(new_group->gp_counters, 0, counters_num_gp); fill_counter_bitmap(new_group->fixed_counters, 0, counters_num_fixed); list_add_tail(&new_group->nd, head); --=20 2.42.0