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From: "Rafael J. Wysocki" <rjw@rjwysocki.net>
To: "Prakash, Prashanth" <pprakash@codeaurora.org>
Cc: linux-acpi@vger.kernel.org, hotran@apm.com, ahs3@redhat.com,
	Alexey Klimov <alexey.klimov@arm.com>,
	George Cherian <george.cherian@cavium.com>
Subject: Re: [PATCH V2 0/2] additional sysfs entries for CPPC
Date: Mon, 17 Apr 2017 18:20:53 +0200	[thread overview]
Message-ID: <2277460.NbhXrg4XLS@aspire.rjw.lan> (raw)
In-Reply-To: <94a244fe-27be-7615-f7f9-e5ac77af851a@codeaurora.org>

On Monday, April 17, 2017 09:42:15 AM Prakash, Prashanth wrote:
> Cc++
> 
> Any feedback on this?
> 
> On 3/29/2017 1:49 PM, Prashanth Prakash wrote:
> > This patch-set adds few additional sysfs entries to expose the
> > performance capabilities of each CPU. The performance capabilities
> > include highest perf, lowest perf, nominal perf and lowest
> > non-linear perf. See 8.4.7.1 for ACPI 6.1 spec for details on
> > these capabilities.
> >
> > cppc_cpufreq driver operates in KHz scale whereas the delivered
> > performance computed in userspace will be in abstract CPPC scale, so
> > exposing perf capabilities should allow userspace to figure out the
> > conversion factor from CPPC scale to KHz.
> >
> > Changes in V2:
> >  - Removed caching of perf caps based on Rafael's inputs
> >
> > Prashanth Prakash (2):
> >   ACPI / CPPC: Read lowest non linear perf in cppc_get_perf_caps
> >   ACPI / CPPC: add sysfs entries for CPPC perf capabilities
> >
> >  drivers/acpi/cppc_acpi.c | 80 ++++++++++++++++++++++++++----------------------
> >  include/acpi/cppc_acpi.h |  3 +-
> >  2 files changed, 46 insertions(+), 37 deletions(-)

I am about to get to this.

Thanks,
Rafael


      reply	other threads:[~2017-04-17 16:26 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-29 19:49 [PATCH V2 0/2] additional sysfs entries for CPPC Prashanth Prakash
2017-03-29 19:49 ` [PATCH V2 1/2] ACPI / CPPC: Read lowest non linear perf in cppc_get_perf_caps Prashanth Prakash
2017-04-18 14:28   ` Rafael J. Wysocki
2017-04-18 17:03     ` Prakash, Prashanth
2017-03-29 19:50 ` [PATCH V2 2/2] ACPI / CPPC: add sysfs entries for CPPC perf capabilities Prashanth Prakash
2017-04-17 15:42 ` [PATCH V2 0/2] additional sysfs entries for CPPC Prakash, Prashanth
2017-04-17 16:20   ` Rafael J. Wysocki [this message]

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