linux-kernel - How do I get mac80211 debugfs?

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Date:	Mon, 1 Oct 2012 16:06:58 -0700 (PDT)
From:	Kevin Cruz <skate_ops@...oo.com>
To:	Johannes Berg <johannes@...solutions.net>
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: How do I get mac80211 debugfs?

Hey Johannes,
    None of this should be too much of an effort for me. Thankfully I
don't find terminals to be daunting.

> Yeah ... we saw this in the lab at some point, but somehow we couldn't
> reproduce it again later. The issue is that we stop the queues, and
> never restart them, and if it's the same issue then it's definitely the
> driver's fault.

> To confirm, when you get this, can you please do

> sudo cat /sys/kernel/debug/ieee80211/phy*/queues

> (assuming you have mac80211 debugfs compiled)

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?

Thanks, Kevin

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