linux-kernel - Re: USB device cannot be reconnected and khubd "blocked for more than 120 seconds"

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Message-ID: <20130115231747.GI2668@htj.dyndns.org>
Date:	Tue, 15 Jan 2013 15:17:47 -0800
From:	Tejun Heo <tj@...nel.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Ming Lei <ming.lei@...onical.com>,
	Alex Riesen <raa.lkml@...il.com>,
	Alan Stern <stern@...land.harvard.edu>,
	Jens Axboe <axboe@...nel.dk>,
	USB list <linux-usb@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: USB device cannot be reconnected and khubd "blocked for more
 than 120 seconds"

Hello, Linus

Will continue on another reply but this one is relevant so...

On Tue, Jan 15, 2013 at 10:18:45AM -0800, Linus Torvalds wrote:
> Tejun, is there a good way for code to see "I'm running in async
> context"? Then we could do something like

Almost.  With a bit of modification we can ask whether current is a
kworker, reach struct worker_struct via kthread_data() if so and then
test worker->current_func against the async workfn.

Thanks.

-- 
tejun
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