linux-kernel - Re: [RFC PATCH 13/16 v3] Intercept wakeup/fork/exec load balancing

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Message-ID: <20140603122702.GM30445@twins.programming.kicks-ass.net>
Date:	Tue, 3 Jun 2014 14:27:02 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Yuyang Du <yuyang.du@...el.com>
Cc:	mingo@...hat.com, rafael.j.wysocki@...el.com,
	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
	arjan.van.de.ven@...el.com, len.brown@...el.com,
	alan.cox@...el.com, mark.gross@...el.com, pjt@...gle.com,
	bsegall@...gle.com, morten.rasmussen@....com,
	vincent.guittot@...aro.org, rajeev.d.muralidhar@...el.com,
	vishwesh.m.rudramuni@...el.com, nicole.chalhoub@...el.com,
	ajaya.durg@...el.com, harinarayanan.seshadri@...el.com,
	jacob.jun.pan@...ux.intel.com, fengguang.wu@...el.com
Subject: Re: [RFC PATCH 13/16 v3] Intercept wakeup/fork/exec load balancing

On Fri, May 30, 2014 at 02:36:09PM +0800, Yuyang Du wrote:
> We intercept load balancing to contain the load and load balancing in
> the consolidated CPUs according to our consolidating mechanism.
> 
> In wakeup/fork/exec load balaning, when to find the idlest sched_group,
> we first try to find the consolidated group

Anything with intercept in is a complete non-starter. You still fully
duplicate the logic.

You really didn't get anything I said, did you?

Please as to go back to square 1 and read again.

So take a step back and try and explain what and why you're doing
things, also try and look at what other people are doing. If I see
another patch from you within two weeks I'll simply delete it, there's
no way you can read up and fix everything in such a short time.

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