linux-kernel - Re: BUG? 2.6.24-rc*[-mm*] - debugfs subdirs missing on x86

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Date:	Fri, 18 Jan 2008 12:19:26 -0800
From:	Greg KH <gregkh@...e.de>
To:	Lee Schermerhorn <Lee.Schermerhorn@...com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jens Axboe <jens.axboe@...cle.com>, prasanna@...ibm.com,
	ananth@...ibm.com, anil.s.keshavamurthy@...el.com,
	davem@...emloft.net
Subject: Re: BUG? 2.6.24-rc*[-mm*] - debugfs subdirs missing on x86_64

On Fri, Jan 18, 2008 at 03:12:33PM -0500, Lee Schermerhorn wrote:
> I searched around the archives and web and didn't find any reports on
> this [maybe just missed them?], so I MUST be doing something
> wrong/stupid.  My config [included] may be the culprit.  Apologies for
> the long cc list.  I'm copying the kprobes and blktrace maintainers
> [addresses from MAINTAINERS] to verify that they're NOT seeing this
> problem.
> 
> Problem:  I see no sub-directories below /sys/kernel/debug on x86_64

Have you mounted debugfs on /sys/kernel/debug?  Try:
	mount -t debugfs none /sys/kernel/debug
as root and see if the files are present or not.

thanks,

greg k-h
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