linux-kernel - Re: [PATCH 4/8] drivers/perf: hisi: Extract the event filter check of L3C PMU

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Message-ID: <20250731132054.000074e1@huawei.com>
Date: Thu, 31 Jul 2025 13:20:54 +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>,
	<prime.zeng@...ilicon.com>, <fanghao11@...wei.com>, <linuxarm@...wei.com>,
	<yangyicong@...ilicon.com>
Subject: Re: [PATCH 4/8] drivers/perf: hisi: Extract the event filter check
 of L3C PMU

On Tue, 29 Jul 2025 23:38:19 +0800
Yushan Wang <wangyushan12@...wei.com> wrote:

> From: Yicong Yang <yangyicong@...ilicon.com>
> 
> L3C PMU has 4 filter options which are sharing perf_event_attr::config1.
> Driver will check config1 to see whether a certain event has a filter
> setting. It'll be incorrect if we make use of other bits in config1
> for non-filter options. So check whether each filter options are set
> directly in a separate function instead.
> 
> Signed-off-by: Yicong Yang <yangyicong@...ilicon.com>
> Signed-off-by: Yushan Wang <wangyushan12@...wei.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@...wei.com>