From mboxrd@z Thu Jan  1 00:00:00 1970
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Message-ID: <1520930375.20980.213.camel@gmail.com>
Subject: Re: [PATCH V3 0/4] genirq/affinity: irq vector spread among online
 CPUs as far as possible
From: Artem Bityutskiy <dedekind1@gmail.com>
Reply-To: dedekind1@gmail.com
To: Ming Lei <ming.lei@redhat.com>
Cc: Dou Liyang <douly.fnst@cn.fujitsu.com>, Thomas Gleixner
 <tglx@linutronix.de>,  Jens Axboe <axboe@kernel.dk>, Christoph Hellwig
 <hch@infradead.org>, linux-kernel@vger.kernel.org,
 linux-block@vger.kernel.org, Laurence Oberman <loberman@redhat.com>,
 "Rafael J. Wysocki" <rafael@kernel.org>
Date: Tue, 13 Mar 2018 10:39:35 +0200
In-Reply-To: <20180313083535.GA21612@ming.t460p>
References: <20180308105358.1506-1-ming.lei@redhat.com>
	 <1520515113.20980.31.camel@gmail.com> <20180308133440.GA2713@ming.t460p>
	 <alpine.DEB.2.21.1803090011150.1454@nanos.tec.linutronix.de>
	 <20180309012458.GD5228@ming.t460p>
	 <alpine.DEB.2.21.1803091107520.1364@nanos.tec.linutronix.de>
	 <20180309120833.GB30257@ming.t460p>
	 <alpine.DEB.2.21.1803091531000.1364@nanos.tec.linutronix.de>
	 <5e5f3852-5314-c479-245e-d0a575e533a5@cn.fujitsu.com>
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On Tue, 2018-03-13 at 16:35 +0800, Ming Lei wrote:
> Then looks this issue need to fix by making possible CPU count
> accurate
> because there are other resources allocated according to
> num_possible_cpus(),
> such as percpu variables.

Short term the regression should be fixed. It is already v4.16-rc6, we
have little time left.

Longer term, yeah, I agree. Kernel's notion of possible CPU count
should be realistic.

Artem.