linux-kernel - Re: [PATCH 1/3] sched/isolation: Add io

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Date: Mon, 24 Jun 2024 10:47:05 +0200
From: Christoph Hellwig <hch@....de>
To: Daniel Wagner <dwagner@...e.de>
Cc: Christoph Hellwig <hch@....de>, Jens Axboe <axboe@...nel.dk>,
	Keith Busch <kbusch@...nel.org>, Sagi Grimberg <sagi@...mberg.me>,
	Thomas Gleixner <tglx@...utronix.de>,
	Frederic Weisbecker <fweisbecker@...e.com>,
	Mel Gorman <mgorman@...e.de>, Hannes Reinecke <hare@...e.de>,
	Sridhar Balaraman <sbalaraman@...allelwireless.com>,
	"brookxu.cn" <brookxu.cn@...il.com>, Ming Lei <ming.lei@...hat.com>,
	linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
	linux-nvme@...ts.infradead.org
Subject: Re: [PATCH 1/3] sched/isolation: Add io_queue housekeeping option

On Mon, Jun 24, 2024 at 09:13:06AM +0200, Daniel Wagner wrote:
> On Sat, Jun 22, 2024 at 07:11:57AM GMT, Christoph Hellwig wrote:
> > > diff --git a/include/linux/sched/isolation.h b/include/linux/sched/isolation.h
> > > index 2b461129d1fa..fe751d704e99 100644
> > > --- a/include/linux/sched/isolation.h
> > > +++ b/include/linux/sched/isolation.h
> > > @@ -16,6 +16,7 @@ enum hk_type {
> > >  	HK_TYPE_WQ,
> > >  	HK_TYPE_MANAGED_IRQ,
> > >  	HK_TYPE_KTHREAD,
> > > +	HK_TYPE_IO_QUEUE,
> > >  	HK_TYPE_MAX
> > >  };
> > 
> > It might be a good time to write comments explaining these types?
> 
> Sure, will do.
> 
> Do you think we should introduce a new type or just use the existing
> managed_irq for this?

No idea really.  What was the reason for adding a new one?  The best
person to comment on this is probably Thomas.