linux-kernel - Re: How do I get mac80211 debugfs?

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Date:	Tue, 02 Oct 2012 13:20:19 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	Kevin Cruz <skate_ops@...oo.com>
Cc:	Intel Wireless <ilw@...ux.intel.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>
Subject: Re: How do I get mac80211 debugfs?

On Tue, 2012-10-02 at 08:38 +0200, Johannes Berg wrote:
> Hi Kevin,
> 
> > So I tried that but all I got back was:
> > 
> >     cat: /sys/kernel/debug/ieee80211/phy*/queues: No such file or directory
> > 
> > so I'm assuming it's because I must not have mac80211 debugfs.  So how
> > do I get it?
> 
> First, make sure it's mounted, check "mount" and if not mount it:
> 
> sudo mount -t debugfs debugfs /sys/kernel/debug
> 
> If that doesn't work you don't have it enabled in the kernel config,
> check for CONFIG_DEBUG_FS. If you do have it, but not mac80211's files,
> check for CONFIG_MAC80211_DEBUGFS.

Oh also, if tracing already works, that'd be sufficient. No need to
enable debugfs just to confirm the issue, tracing would let me confirm
it as well. I just thought debugfs would let me confirm the issue first
before going to the trouble of enabling tracing.

johannes

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