From: Will Deacon <will@kernel.org>
To: Qi Liu <liuqi115@huawei.com>
Cc: mark.rutland@arm.com, zhangshaokun@hisilicon.com,
linuxarm@huawei.com, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] drivers/perf: hisi: Add driver for HiSilicon PCIe PMU
Date: Wed, 7 Apr 2021 21:40:05 +0100 [thread overview]
Message-ID: <20210407204004.GB16011@willie-the-truck> (raw)
In-Reply-To: <1617788943-52722-2-git-send-email-liuqi115@huawei.com>
On Wed, Apr 07, 2021 at 05:49:02PM +0800, Qi Liu wrote:
> PCIe PMU Root Complex Integrated End Point(RCiEP) device is supported
> to sample bandwidth, latency, buffer occupation etc.
>
> Each PMU RCiEP device monitors multiple root ports, and each RCiEP is
> registered as a pmu in /sys/bus/event_source/devices, so users can
> select target PMU, and use filter to do further sets.
>
> Filtering options contains:
> event - select the event.
> subevent - select the subevent.
> port - select target root ports. Information of root ports
> are shown under sysfs.
> bdf - select requester_id of target EP device.
> trig_len - set trigger condition for starting event statistics.
> trigger_mode - set trigger mode. 0 means starting to statistic when
> bigger than trigger condition, and 1 means smaller.
> thr_len - set threshold for statistics.
> thr_mode - set threshold mode. 0 means count when bigger than
> threshold, and 1 means smaller.
>
> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Do you have a link to this review, please?
Will
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next prev parent reply other threads:[~2021-04-07 20:42 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-07 9:49 [PATCH 0/2] drivers/perf: hisi: Add support for PCIe PMU Qi Liu
2021-04-07 9:49 ` [PATCH 1/2] drivers/perf: hisi: Add driver for HiSilicon " Qi Liu
2021-04-07 20:40 ` Will Deacon [this message]
2021-04-08 9:01 ` Jonathan Cameron
2021-04-08 12:55 ` John Garry
2021-04-08 13:28 ` Will Deacon
2021-04-07 9:49 ` [PATCH 2/2] docs: perf: Add description for HiSilicon PCIe PMU driver Qi Liu
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