linux-kernel - Re: [PATCH v7 6/6] cpufreq: powernv: Add sysfs attributes to show throttle stats

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Message-ID: <56A9E56C.1050505@linux.vnet.ibm.com>
Date:	Thu, 28 Jan 2016 15:24:52 +0530
From:	Shilpasri G Bhat <shilpa.bhat@...ux.vnet.ibm.com>
To:	Viresh Kumar <viresh.kumar@...aro.org>
CC:	linuxppc-dev@...abs.org, linux-kernel@...r.kernel.org,
	rjw@...ysocki.net, linux-pm@...r.kernel.org, pc@...ibm.com,
	anton@...ba.org, ego@...ux.vnet.ibm.com,
	shreyas@...ux.vnet.ibm.com, bsingharora@...il.com,
	mpe@...erman.id.au, linux-api@...r.kernel.org
Subject: Re: [PATCH v7 6/6] cpufreq: powernv: Add sysfs attributes to show
 throttle stats



On 01/28/2016 03:11 PM, Viresh Kumar wrote:
> On 28-01-16, 15:06, Shilpasri G Bhat wrote:
>> No these stats are not per-policy. They are per-chip. The throttle event is
>> common for all cores in the chip.
> 
> How do you define a chip? And how is it different then the group of
> CPUs represented by the policy ?
> 

Chip is a group of policies.
Hmm yes I see your point. We anyways maintain frequency stats which is
per-policy. We might as well have throttle stats exported per-policy which
points to per-chip data.