linux-kernel - Re: [Ksummit-2013-discuss] Defining schemas for Device Tree

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20130729172952.GA1884@obsidianresearch.com>
Date:	Mon, 29 Jul 2013 11:29:52 -0600
From:	Jason Gunthorpe <jgunthorpe@...idianresearch.com>
To:	Jason Cooper <jason@...edaemon.net>
Cc:	Dave Martin <Dave.Martin@....com>,
	Mark Rutland <mark.rutland@....com>,
	Tomasz Figa <tomasz.figa@...il.com>,
	Wolfram Sang <w.sang@...gutronix.de>,
	Grant Likely <grant.likely@...retlab.ca>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Ian Campbell <ian.campbell@...rix.com>,
	Pawel Moll <pawel.moll@....com>,
	Stephen Warren <swarren@...dotorg.org>,
	Richard Cochran <richardcochran@...il.com>,
	Domenico Andreoli <cavokz@...il.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	James Bottomley <James.Bottomley@...senpartnership.com>,
	"ksummit-2013-discuss@...ts.linuxfoundation.org" 
	<ksummit-2013-discuss@...ts.linuxfoundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"jonsmirl@...il.com" <jonsmirl@...il.com>
Subject: Re: [Ksummit-2013-discuss] Defining schemas for Device Tree

On Mon, Jul 29, 2013 at 01:23:39PM -0400, Jason Cooper wrote:

> true, the answer to this problem may be to create a depgraph of the
> nodes based on phandles and child status, then init.  However, if the
> goal is to accelerate boot times, then that should not be calculated
> during each boot, especially since it doesn't likely change from boot to
> boot.

That seems like a really smart idea. dtc could store the startup-order
and dependencies in the dtb someplace and the kernel can just run
through that. Using a combination of declaration order and
topo-phandle sorting would probably cover all cases???

Jason
--
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/