linux-kernel - Re: [PATCH v4 1/2] drivers/perf: hisi: Associate PMUs in SICL with CPUs online

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Message-ID: <48e9e622-30b5-0aeb-2860-bf2ea9bff939@huawei.com>
Date:   Thu, 7 Apr 2022 14:03:44 +0100
From:   John Garry <john.garry@...wei.com>
To:     Qi Liu <liuqi115@...wei.com>, <will@...nel.org>,
        <mark.rutland@....com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linuxarm@...wei.com>,
        <zhangshaokun@...ilicon.com>
Subject: Re: [PATCH v4 1/2] drivers/perf: hisi: Associate PMUs in SICL with
 CPUs online

On 07/04/2022 13:46, Qi Liu wrote:
> If a PMU is in a SICL (Super IO cluster), it is not appropriate to
> associate this PMU with a CPU die. So we associate it with all CPUs
> online.
> 
> As the firmware of Hip09 platform hasn't been published yet, change
> of PMU driver will not influence backwards compatibility between
> driver and firmware.
> 
> Signed-off-by: Qi Liu<liuqi115@...wei.com>

Reviewed-by: John Garry <john.garry@...wei.com>