From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 4871B402B87 for ; Mon, 11 May 2026 15:51:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778514694; cv=none; b=H6tUoQx31+oKvuf7edW7PEIJYXu9itJk8/oWr7p8acwgrsjEbDP4DRuWPRVcYLXR9+BtvdTvnV5n1dS0tTXcgVWeKsTlDOYKImQeWpXg1YeZvl4aGP/gEtCOOlNpZh5Zvjl9Y+bdq2wwgBm4uFgPAzOOg/gLJgDr7z/m55qRFKk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778514694; c=relaxed/simple; bh=59D2L516N9XT0eGE8EqGlqo7ArzVSf/bKNF4d/jh4tw=; h=Message-ID:Date:MIME-Version:Subject:Cc:References:To:From: In-Reply-To:Content-Type; b=fNGF3urFJ6R/1AqtXRZX3cj266td+K4AEIGIIMwMRObmReSliMMPFjeY8Puqmn4l5HXQZeiJOx1lfJ5dsFP32Okrnb7Mk434U1kNjayjfAXB3r7L/qMsUmzcgS6yLQbyezgERdNdYGAn06rxlX2nWkSs2mYBXPdMZuomrbqjnkc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=Pe0UUCSA; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="Pe0UUCSA" 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 35F4516F3; Mon, 11 May 2026 08:51:27 -0700 (PDT) Received: from [10.1.196.46] (e134344.arm.com [10.1.196.46]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 617C13F836; Mon, 11 May 2026 08:51:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1778514692; bh=59D2L516N9XT0eGE8EqGlqo7ArzVSf/bKNF4d/jh4tw=; h=Date:Subject:Cc:References:To:From:In-Reply-To:From; b=Pe0UUCSAk9BbAHb4Perpr2VC0UvWg+IJcpDpp2ujgq1OeRuM19fi1/O+P+mMgxf9l RzrUTqvDmxKm9w6nVbc49K87DVyxvLw8he5hRnDkH7kCyyRXmjp2FK9vhY2a+1Ad4I J0o9qzOWMFKjgi+c5Y7siN8gIadQyQZf9pp4Tn+s= Message-ID: <9fb14e0e-5dc4-4d64-883f-6fab93f46195@arm.com> Date: Mon, 11 May 2026 16:51:28 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Thunderbird Daily Subject: Re: [PATCH v3 0/5] arm_mpam: resctrl: Counter Assignment (ABMC) Cc: amitsinght@marvell.com, baisheng.gao@unisoc.com, baolin.wang@linux.alibaba.com, carl@os.amperecomputing.com, dave.martin@arm.com, david@kernel.org, dfustini@baylibre.com, fenghuay@nvidia.com, gshan@redhat.com, james.morse@arm.com, jonathan.cameron@huawei.com, kobak@nvidia.com, lcherian@marvell.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, peternewman@google.com, punit.agrawal@oss.qualcomm.com, quic_jiles@quicinc.com, reinette.chatre@intel.com, rohit.mathew@arm.com, scott@os.amperecomputing.com, sdonthineni@nvidia.com, tan.shaopeng@fujitsu.com, xhao@linux.alibaba.com, zengheng4@huawei.com, x86@kernel.org References: <20260511154147.557481-1-ben.horgan@arm.com> Content-Language: en-US To: ben.horgan@arm.com From: Ben Horgan In-Reply-To: <20260511154147.557481-1-ben.horgan@arm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit I forgot to say, the code can be found at: https://gitlab.arm.com/linux-arm/linux-bh.git mpam_abmc_v3 On 5/11/26 16:41, Ben Horgan wrote: > Removing the rfc tag as the resctrl precursors [1] have been queued in tip > x86/cache. Due to that dependency, it would be good for this to also go through > x86/cache. > > This series adds support for memory bandwidth monitoring. > > Please review and test. > > Changelogs in patches. > > [1] https://lore.kernel.org/all/20260506082855.3694761-1-ben.horgan@arm.com/ > > Description from the initial cover letter: > > The MPAM counter assignment (ABMC emulation) changes that were dropped from > the resctrl glue series due to some missing precursors in resctrl. Counter > assignment enables bandwidth monitoring in systems that have fewer > monitors than resctrl monitor groups. > > rfc v1: https://lore.kernel.org/lkml/20260225205436.3571756-1-ben.horgan@arm.com/ > rfc v2: https://lore.kernel.org/lkml/20260319165540.381410-1-ben.horgan@arm.com/ > > Ben Horgan (2): > arm_mpam: resctrl: Pre-allocate assignable monitors > arm64: mpam: Add memory bandwidth usage (MBWU) documentation > > James Morse (3): > arm_mpam: resctrl: Pick classes for use as mbm counters > arm_mpam: resctrl: Add resctrl_arch_config_cntr() for ABMC use > arm_mpam: resctrl: Add resctrl_arch_cntr_read() & > resctrl_arch_reset_cntr() > > Documentation/arch/arm64/mpam.rst | 17 ++ > drivers/resctrl/mpam_internal.h | 6 +- > drivers/resctrl/mpam_resctrl.c | 306 +++++++++++++++++++++++++++--- > 3 files changed, 306 insertions(+), 23 deletions(-) >