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Date: Wed, 12 Dec 2007 14:15:35 -0500 From: Dave Jones <davej@...hat.com> To: Greg KH <greg@...ah.com> Cc: "Huang, Ying" <ying.huang@...el.com>, Andrew Morton <akpm@...ux-foundation.org>, Dave Young <hidave.darkstar@...il.com>, "H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org, clameter@....com Subject: Re: [PATCH -mm] x86 boot : export boot_params via sysfs (forward to Greg) On Wed, Dec 12, 2007 at 09:45:07AM -0800, Greg Kroah-Hartman wrote: > Well, I respectively disagree. sysfs is NOT for exporting various > binary kernel structures to userspace directly. Again, the binary files > in sysfs are for chunks of memory that are PASS-THROUGH from hardware to > userspace, with no kernel intervention at all. > If you really need such a thing, use debugfs, as the only rule for > debugfs is that there is no rules :) Whilst on the subject, why wasn't /sys/slab done in debugfs ? The one-value-per-file thing has gone taken to ridiculous extremes there. Having 3641 sysfs files that most people never use permanently taking up memory seems to be a massive waste of resources. Nearly a third of all the sysfs files I have on my system belong to that subtree, which is just.. wow. Dave -- http://www.codemonkey.org.uk -- 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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