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 14:14:06 +0100 [thread overview]
Message-ID: <20170720131406.GC16356@arm.com> (raw)
In-Reply-To: <20170720130847.GB16356@arm.com>
On Thu, Jul 20, 2017 at 02:08:47PM +0100, Will Deacon wrote:
> 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>.
... which are symlinks to directories under /sys/devices/! I didn't realise
that, so I suspect you're ok. Still worth getting the format of things
correct though, so perf can read/parse them with minimal effort.
Will
next prev parent reply other threads:[~2017-07-20 13:14 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
2017-07-20 13:14 ` Will Deacon [this message]
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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