linux-kernel - Re: [PATCH v2 5/9] drivers/perf: hisi: Extend the field of tt

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Message-ID: <20250826140716.000079ba@huawei.com>
Date: Tue, 26 Aug 2025 14:07:16 +0100
From: Jonathan Cameron <Jonathan.Cameron@...wei.com>
To: Yushan Wang <wangyushan12@...wei.com>
CC: <will@...nel.org>, <mark.rutland@....com>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
	<robin.murphy@....com>, <yangyicong@...wei.com>, <liuyonglong@...wei.com>,
	<wanghuiqiang@...wei.com>, <prime.zeng@...ilicon.com>,
	<hejunhao3@...artners.com>
Subject: Re: [PATCH v2 5/9] drivers/perf: hisi: Extend the field of tt_core

On Thu, 21 Aug 2025 21:50:45 +0800
Yushan Wang <wangyushan12@...wei.com> wrote:

> From: Yicong Yang <yangyicong@...ilicon.com>
> 
> Currently the tt_core's using config1's bit [7, 0] and can not be
> extended. For some platforms there's more the 8 CPUs sharing the
> L3 cache. So make tt_core use config2's bit [15, 0] and the remaining
> bits in config2 is reserved for extension.
> 
> Signed-off-by: Yicong Yang <yangyicong@...ilicon.com>
> Signed-off-by: Yushan Wang <wangyushan12@...wei.com>
Acked-by: Jonathan Cameron <jonathan.cameron@...wei.com>