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Message-ID: <20090510205850.30d10fc2@infradead.org> Date: Sun, 10 May 2009 20:58:50 -0700 From: Arjan van de Ven <arjan@...radead.org> To: Andrew Morton <akpm@...ux-foundation.org> Cc: Kay Sievers <kay.sievers@...y.org>, Alan Cox <alan@...rguk.ukuu.org.uk>, Peter Zijlstra <peterz@...radead.org>, Greg KH <gregkh@...e.de>, Fabio Comolli <fabio.comolli@...il.com>, Greg KH <greg@...ah.com>, linux-kernel@...r.kernel.org Subject: Re: [patch 00/13] devtmpfs patches On Sun, 10 May 2009 18:00:18 -0700 Andrew Morton <akpm@...ux-foundation.org> wrote: > A 1.5 second saving on some gadget which boots in 6 seconds would be a > lot more interesting. udev does not take 1.5 seconds today; it takes more like 0.75, of which the last 2/3rds are optional/asynchronous. Eric has shown that just making the nodes is 0.06 seconds with todays sysfs interface, and there is room for improvement, and room for Kay and Greg's patches if they get turned into having a nice flat ascii file that lists all device nodes in the system. That way Kay and Greg get the fast and easy startup of /dev that they want, and others like Eric and me get the flexibility to have a slightly smarter program that also gets the device ownership and permissions from a small database. -- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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