linux-kernel - Re: [RFC][PATCH 1/3] PM: Asynchronous resume of devices

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Message-ID: <20090822092429.GC11448@elf.ucw.cz>
Date:	Sat, 22 Aug 2009 11:24:30 +0200
From:	Pavel Machek <pavel@....cz>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	linux-pm <linux-pm@...ts.linux-foundation.org>,
	linux-acpi <linux-acpi@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Zhang Rui <rui.zhang@...el.com>, Len Brown <lenb@...nel.org>,
	Alan Stern <stern@...land.harvard.edu>,
	Arjan van de Ven <arjan@...ux.intel.com>
Subject: Re: [RFC][PATCH 1/3] PM: Asynchronous resume of devices

Hi!

> > Do we really need async for noirq handlers?
> 
> Yes, we do.  Specifically, for PCI.

Do noirq parts of PCI handling really so long that we need to make
them async?

Async in normal paths looks pretty much okay to me, but in noirq
parts, locking is tricky, etc...
								Pavel

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