From: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>
To: Viresh Kumar <viresh.kumar@linaro.org>
Cc: "Gautham R. Shenoy" <ego@linux.vnet.ibm.com>,
linuxppc-dev@ozlabs.org, Linux PM list <linux-pm@vger.kernel.org>,
benh@kernel.crashing.org, svaidy@linux.vnet.ibm.com
Subject: Re: [PATCH v3 2/5] powernv,cpufreq:Add per-core locking to serialize frequency transitions
Date: Fri, 21 Mar 2014 15:26:13 +0530 [thread overview]
Message-ID: <532C0CBD.1060904@linux.vnet.ibm.com> (raw)
In-Reply-To: <CAOh2x==Lzeatp=7BoxuSH4PfxXqWqpHJ_KcwWdXXsFAftxTMCQ@mail.gmail.com>
On 03/21/2014 02:12 PM, Viresh Kumar wrote:
> On Thu, Mar 20, 2014 at 5:40 PM, Gautham R. Shenoy
> <ego@linux.vnet.ibm.com> wrote:
>> From: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>
>>
>> On POWER systems, the CPU frequency is controlled at a core-level and
>> hence we need to serialize so that only one of the threads in the core
>> switches the core's frequency at a time.
>
> Probably you don't need this anymore.
>
> https://lkml.org/lkml/2014/3/21/23
>
Agreed.
Regards,
Srivatsa S. Bhat
WARNING: multiple messages have this Message-ID (diff)
From: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>
To: Viresh Kumar <viresh.kumar@linaro.org>
Cc: "Gautham R. Shenoy" <ego@linux.vnet.ibm.com>,
Linux PM list <linux-pm@vger.kernel.org>,
linuxppc-dev@ozlabs.org
Subject: Re: [PATCH v3 2/5] powernv, cpufreq:Add per-core locking to serialize frequency transitions
Date: Fri, 21 Mar 2014 15:26:13 +0530 [thread overview]
Message-ID: <532C0CBD.1060904@linux.vnet.ibm.com> (raw)
In-Reply-To: <CAOh2x==Lzeatp=7BoxuSH4PfxXqWqpHJ_KcwWdXXsFAftxTMCQ@mail.gmail.com>
On 03/21/2014 02:12 PM, Viresh Kumar wrote:
> On Thu, Mar 20, 2014 at 5:40 PM, Gautham R. Shenoy
> <ego@linux.vnet.ibm.com> wrote:
>> From: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>
>>
>> On POWER systems, the CPU frequency is controlled at a core-level and
>> hence we need to serialize so that only one of the threads in the core
>> switches the core's frequency at a time.
>
> Probably you don't need this anymore.
>
> https://lkml.org/lkml/2014/3/21/23
>
Agreed.
Regards,
Srivatsa S. Bhat
next prev parent reply other threads:[~2014-03-21 9:56 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-20 12:10 [PATCH v3 0/5] powernv: Enable Dynamic Frequency Gautham R. Shenoy
2014-03-20 12:10 ` Gautham R. Shenoy
2014-03-20 12:10 ` [PATCH v3 1/5] powernv: cpufreq driver for powernv platform Gautham R. Shenoy
2014-03-20 12:10 ` Gautham R. Shenoy
2014-03-21 8:41 ` Viresh Kumar
2014-03-21 8:41 ` Viresh Kumar
2014-03-21 10:43 ` Gautham R Shenoy
2014-03-21 10:43 ` Gautham R Shenoy
2014-03-21 10:54 ` Viresh Kumar
2014-03-21 10:54 ` Viresh Kumar
2014-03-21 11:40 ` Srivatsa S. Bhat
2014-03-21 11:40 ` Srivatsa S. Bhat
2014-03-21 13:23 ` Gautham R Shenoy
2014-03-21 13:23 ` Gautham R Shenoy
2014-03-21 13:34 ` Viresh Kumar
2014-03-21 13:34 ` Viresh Kumar
2014-03-21 14:54 ` Gautham R Shenoy
2014-03-21 14:54 ` Gautham R Shenoy
2014-03-22 3:43 ` Viresh Kumar
2014-03-22 3:43 ` Viresh Kumar
2014-03-21 14:48 ` Vaidyanathan Srinivasan
2014-03-21 14:48 ` Vaidyanathan Srinivasan
2014-03-22 3:43 ` Viresh Kumar
2014-03-22 3:43 ` Viresh Kumar
2014-03-21 11:45 ` Srivatsa S. Bhat
2014-03-21 11:45 ` Srivatsa S. Bhat
2014-03-21 11:47 ` Viresh Kumar
2014-03-21 11:47 ` Viresh Kumar
2014-03-20 12:10 ` [PATCH v3 2/5] powernv,cpufreq:Add per-core locking to serialize frequency transitions Gautham R. Shenoy
2014-03-20 12:10 ` [PATCH v3 2/5] powernv, cpufreq:Add " Gautham R. Shenoy
2014-03-21 6:24 ` [PATCH v3 2/5] powernv,cpufreq:Add " Gautham R Shenoy
2014-03-21 6:24 ` [PATCH v3 2/5] powernv, cpufreq:Add " Gautham R Shenoy
2014-03-21 8:42 ` Viresh Kumar
2014-03-21 8:42 ` Viresh Kumar
2014-03-21 9:56 ` Srivatsa S. Bhat [this message]
2014-03-21 9:56 ` Srivatsa S. Bhat
2014-03-20 12:10 ` [PATCH v3 3/5] powernv:cpufreq: Create pstate_id_to_freq() helper Gautham R. Shenoy
2014-03-20 12:10 ` Gautham R. Shenoy
2014-03-21 6:24 ` Gautham R Shenoy
2014-03-21 6:24 ` Gautham R Shenoy
2014-03-20 12:10 ` [PATCH v3 4/5] powernv:cpufreq: Export nominal frequency via sysfs Gautham R. Shenoy
2014-03-20 12:10 ` Gautham R. Shenoy
2014-03-21 8:47 ` Viresh Kumar
2014-03-21 8:47 ` Viresh Kumar
2014-03-21 9:55 ` Gautham R Shenoy
2014-03-21 9:55 ` Gautham R Shenoy
2014-03-21 9:57 ` Viresh Kumar
2014-03-21 9:57 ` Viresh Kumar
2014-03-20 12:11 ` [PATCH v3 5/5] powernv:cpufreq: Implement the driver->get() method Gautham R. Shenoy
2014-03-20 12:11 ` Gautham R. Shenoy
2014-03-21 6:25 ` Gautham R Shenoy
2014-03-21 6:25 ` Gautham R Shenoy
2014-03-21 9:31 ` Viresh Kumar
2014-03-21 9:31 ` Viresh Kumar
2014-03-21 11:04 ` Gautham R Shenoy
2014-03-21 11:04 ` Gautham R Shenoy
2014-03-21 11:45 ` Viresh Kumar
2014-03-21 11:45 ` Viresh Kumar
2014-03-21 12:01 ` David Laight
2014-03-21 12:01 ` David Laight
2014-03-21 12:31 ` Gautham R Shenoy
2014-03-21 12:31 ` Gautham R Shenoy
2014-03-21 12:34 ` Viresh Kumar
2014-03-21 12:34 ` Viresh Kumar
2014-03-21 15:01 ` David Laight
2014-03-21 15:01 ` David Laight
2014-03-21 13:04 ` Gautham R Shenoy
2014-03-21 13:04 ` Gautham R Shenoy
2014-03-21 13:12 ` Viresh Kumar
2014-03-21 13:12 ` Viresh Kumar
2014-03-21 14:25 ` Gautham R Shenoy
2014-03-21 14:25 ` Gautham R Shenoy
2014-03-21 22:56 ` Benjamin Herrenschmidt
2014-03-21 22:56 ` Benjamin Herrenschmidt
2014-03-22 7:53 ` Gautham R Shenoy
2014-03-22 7:53 ` Gautham R Shenoy
2014-03-21 7:46 ` [PATCH v3 0/5] powernv: Enable Dynamic Frequency Viresh Kumar
2014-03-21 7:46 ` Viresh Kumar
2014-03-21 8:19 ` Gautham R Shenoy
2014-03-21 8:19 ` Gautham R Shenoy
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