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Message-ID: <22cc6861-3f3a-a38b-307b-809e29d034c1@arm.com>
Date: Mon, 22 Jan 2024 18:05:44 +0000
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Subject: Re: [PATCH v8 08/24] x86/resctrl: Track the number of dirty RMID a
 CLOSID has
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To: babu.moger@amd.com, x86@kernel.org, linux-kernel@vger.kernel.org
Cc: Fenghua Yu <fenghua.yu@intel.com>,
 Reinette Chatre <reinette.chatre@intel.com>,
 Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>,
 Borislav Petkov <bp@alien8.de>, H Peter Anvin <hpa@zytor.com>,
 shameerali.kolothum.thodi@huawei.com,
 D Scott Phillips OS <scott@os.amperecomputing.com>,
 carl@os.amperecomputing.com, lcherian@marvell.com,
 bobo.shaobowang@huawei.com, tan.shaopeng@fujitsu.com,
 baolin.wang@linux.alibaba.com, Jamie Iles <quic_jiles@quicinc.com>,
 Xin Hao <xhao@linux.alibaba.com>, peternewman@google.com,
 dfustini@baylibre.com, amitsinght@marvell.com
References: <20231215174343.13872-1-james.morse@arm.com>
 <20231215174343.13872-9-james.morse@arm.com>
 <286216a9-d586-42dc-9f1a-8909364bd7bd@amd.com>
From: James Morse <james.morse@arm.com>
In-Reply-To: <286216a9-d586-42dc-9f1a-8909364bd7bd@amd.com>
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Hi Babu,

On 03/01/2024 19:43, Moger, Babu wrote:
> On 12/15/23 11:43, James Morse wrote:
>> MPAM's PMG bits extend its PARTID space, meaning the same PMG value can be
>> used for different control groups.
>>
>> This means once a CLOSID is allocated, all its monitoring ids may still be
>> dirty, and held in limbo.
>>
>> Keep track of the number of RMID held in limbo each CLOSID has. This will
>> allow a future helper to find the 'cleanest' CLOSID when allocating.
>>
>> The array is only needed when CONFIG_RESCTRL_RMID_DEPENDS_ON_CLOSID is
>> defined. This will never be the case on x86.

> Reviewed-by: Babu Moger <babu.moger@amd.com>

Thanks!

James