From: will.deacon@arm•com (Will Deacon)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v3 1/6] Documentation: perf: hisi: Documentation for HiSilicon SoC PMU driver
Date: Thu, 20 Jul 2017 14:08:47 +0100 [thread overview]
Message-ID: <20170720130847.GB16356@arm.com> (raw)
In-Reply-To: <c5c552e2-94e2-9390-9cda-2573844b926d@hisilicon.com>
On Thu, Jul 20, 2017 at 08:54:36PM +0800, Zhangshaokun wrote:
> On 2017/7/19 17:17, Jonathan Cameron wrote:
> >> +Super CPU cluster (SCCL) and is made up of 6 CCLs. Each SCCL has two HHAs
> >> +(0 - 1) and four DDRCs (0 - 3), respectively.
> >> +
> >> +HiSilicon SoC uncore PMU driver
> >> +---------------------------------------
> >> +Each device PMU has separate registers for event counting, control and
> >> +interrupt, and the PMU driver shall register perf PMU drivers like L3C,
> >> +HHA and DDRC etc. The available events and configuration options shall
> >> +be described in the sysfs, see /sys/devices/hisi_*.
> > Is there not a subsystem directory that would make more sense to
> > refer to than the full device list?
> >
>
> For uncore devices, it is more reasonable to list in /sys/devices/***.
The usual place for these things is /sys/bus/event_source/devices/<pmu name>.
The events are described as files under the events directory (one file per
event, which describes the encoding) and you can describe other things such
as formatting and/or capabilities under other directories too.
Take a look at some other PMU drivers to get an idea of how it works.
Will
next prev parent reply other threads:[~2017-07-20 13:08 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-18 7:59 [PATCH v3 0/6] Add HiSilicon SoC uncore Performance Monitoring Unit driver Shaokun Zhang
2017-07-18 7:59 ` [PATCH v3 1/6] Documentation: perf: hisi: Documentation for HiSilicon SoC PMU driver Shaokun Zhang
2017-07-19 9:17 ` Jonathan Cameron
2017-07-20 12:54 ` Zhangshaokun
2017-07-20 13:08 ` Will Deacon [this message]
2017-07-20 13:14 ` Will Deacon
2017-07-18 7:59 ` [PATCH v3 2/6] perf: hisi: Add support for HiSilicon SoC uncore " Shaokun Zhang
2017-07-19 9:19 ` Jonathan Cameron
2017-07-20 13:03 ` Zhangshaokun
2017-07-20 13:49 ` Jonathan Cameron
2017-07-20 14:16 ` Zhangshaokun
2017-07-18 7:59 ` [PATCH v3 3/6] perf: hisi: Add support for HiSilicon SoC L3C " Shaokun Zhang
2017-07-19 9:28 ` Jonathan Cameron
2017-07-20 14:06 ` Zhangshaokun
2017-07-18 7:59 ` [PATCH v3 4/6] perf: hisi: Add support for HiSilicon SoC HHA " Shaokun Zhang
2017-07-18 7:59 ` [PATCH v3 5/6] perf: hisi: Add support for HiSilicon SoC DDRC " Shaokun Zhang
2017-07-18 7:59 ` [PATCH v3 6/6] arm64: MAINTAINERS: hisi: Add HiSilicon SoC PMU support Shaokun Zhang
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