linux-kernel - Re: [linux-pm] [PATCH 0/8] Suspend block api (version 8)

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Message-ID: <AANLkTinsgmHh7iLhESPXiTkoW9SL4H8E92-7bARpDxNX@mail.gmail.com>
Date:	Tue, 1 Jun 2010 20:15:17 -0700
From:	Arve Hjønnevåg <arve@...roid.com>
To:	"Gross, Mark" <mark.gross@...el.com>
Cc:	James Bottomley <James.Bottomley@...e.de>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Matthew Garrett <mjg59@...f.ucam.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	"tytso@....edu" <tytso@....edu>,
	LKML <linux-kernel@...r.kernel.org>,
	Florian Mickler <florian@...kler.org>,
	Linux PM <linux-pm@...ts.linux-foundation.org>,
	Linux OMAP Mailing List <linux-omap@...r.kernel.org>,
	"felipe.balbi@...ia.com" <felipe.balbi@...ia.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Alan Stern <stern@...land.harvard.edu>,
	Neil Brown <neilb@...e.de>
Subject: Re: [linux-pm] [PATCH 0/8] Suspend block api (version 8)

2010/6/1 Gross, Mark <mark.gross@...el.com>:
...
>>4. It would be useful to change pm_qos_add_request to not allocate
>>anything so can add constraints from init functions that currently
>>cannot fail.
> [mtg: ] I'm not sure how to do this but I agree it would be good.  I guess we could have a block of pm_qos requests pre-allocated statically and re-use them.  In practice there will not be more than a handful of requests ever.  Dynamic allocation does seem like a bit of a waste.

The calling code will have to store a pointer to your structure
anyway, you may as well have them provide the whole structure.

-- 
Arve Hjønnevåg
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