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From: Ingo Molnar <mingo@kernel.org>
To: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: Ingo Molnar <mingo@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	linux-kernel@vger.kernel.org,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH v2 0/8] scheduler tinification
Date: Sun, 11 Jun 2017 11:23:42 +0200	[thread overview]
Message-ID: <20170611092342.7jngfh4alp4w22xs@gmail.com> (raw)
In-Reply-To: <alpine.LFD.2.20.1706081245420.29475@knanqh.ubzr>


* Nicolas Pitre <nicolas.pitre@linaro.org> wrote:

> > But the kernel complexity you introduce with this series stays with us! It 
> > will be an additional cost added to many scheduler commits going forward. It's 
> > an added cost for all the other usecases.
> 
> OK, let's talk about that a bit. How isn't sched/core.c with its 7387 
> lines not overly complex already? How is my moving of rt related code to 
> rt.c and dl related code to dl.c not helping things? Isn't it easier to 
> understand the 3500 lines of code in futex.c when half of it i.e. the PI 
> specific code is split into a separate file? I ask you.
> 
> If you want to pick only those patches for now then please be my guest. 
> At lease the first two patches of the series should be mergeable without 
> even a doubt.

That's a strawman argument - I was reacting to the combined effect of your series:

 > > >  23 files changed, 3190 insertions(+), 2897 deletions(-)

A subset of the patches might be fine and note that in fact I already picked a 
patch from your series that made sense, I committed this patch of yours three days 
ago:

  f5832c1998af: sched/core: Omit building stop_sched_class when !SMP

I'll pick others as well as long as they don't complicate the code. Please send a 
revised series that only does unambiguous complexity reduction/cleanups.

Thanks,

	Ingo

  reply	other threads:[~2017-06-11  9:23 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-06 23:24 Nicolas Pitre
2017-06-06 23:24 ` [PATCH v2 1/8] cpuset/sched: cpuset makes sense for SMP only Nicolas Pitre
2017-06-06 23:24 ` [PATCH v2 2/8] sched: omit stop_sched_class when !SMP Nicolas Pitre
2017-06-06 23:24 ` [PATCH v2 3/8] futex: make PI support optional Nicolas Pitre
2017-06-06 23:24 ` [PATCH v2 4/8] sched/deadline: move dl related code out of sched/core.c Nicolas Pitre
2017-06-06 23:24 ` [PATCH v2 5/8] sched/rt: move rt " Nicolas Pitre
2017-06-06 23:24 ` [PATCH v2 6/8] sched/deadline: make it configurable Nicolas Pitre
2017-06-06 23:24 ` [PATCH v2 7/8] rtmutex: compatibility wrappers when no RT support is configured Nicolas Pitre
2017-06-06 23:24 ` [PATCH v2 8/8] sched/rt: make it configurable Nicolas Pitre
2017-06-07 16:00 ` [PATCH v2 0/8] scheduler tinification Ingo Molnar
2017-06-07 17:09   ` Nicolas Pitre
2017-06-07 18:49     ` Alan Cox
2017-06-07 21:15       ` Nicolas Pitre
2017-06-07 21:53         ` Alan Cox
2017-06-08  7:59     ` Ingo Molnar
2017-06-08 18:14       ` Alan Cox
2017-06-08 20:16       ` Nicolas Pitre
2017-06-11  9:23         ` Ingo Molnar [this message]
2017-06-11 15:26           ` Nicolas Pitre
2017-06-11  9:42         ` Ingo Molnar
2017-06-11 16:45           ` Nicolas Pitre
2017-06-13  7:12             ` Ingo Molnar
2017-06-13 12:29               ` Nicolas Pitre

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