From: andrew@lunn.ch (Andrew Lunn)
Date: Wed, 23 Jan 2013 19:10:29 +0100
Subject: [PATCH v2] mm: dmapool: use provided gfp flags for all
 dma_alloc_coherent() calls
In-Reply-To: <51001BEE.9020201@web.de>
References: <20121119144826.f59667b2.akpm@linux-foundation.org>
 <201301171049.30415.arnd@arndb.de> <50F800EB.6040104@web.de>
 <201301172026.45514.arnd@arndb.de> <50FABBED.1020905@web.de>
 <20130119185907.GA20719@lunn.ch> <5100022D.9050106@web.de>
 <20130123162515.GK13482@lunn.ch> <510018B4.9040903@web.de>
 <51001BEE.9020201@web.de>
Message-ID: <20130123181029.GE20719@lunn.ch>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

> >>
> >
> >Now (in the last hour) stable, occasionally lower numbers:
> >3396 3396 3396 3396 3396 3396 3396 3396 3396 3396 3396 3396 3396 3396
> >3396 3396 3396 3396 3396 3396 3396 3396 3396 3396 3396 3396 3396 3396
> >3396 3396 3396 3396 3396 3396 3396 3396 3396 3396 3396 3396 3396 3396
> >3396 3396 3396 3396 3396 3396 3396 3396 3396 3365 3396 3394 3396 3396
> >3396 3396 3373 3396 3396 3396 3396 3396 3396 3396 3396 3396 3396 3396
> >3396 3353 3396 3396 3396 3396 3396 3396 3396 3396 3396 3396 3396 3396
> >3394 3396 3396 3396 3396 3396 3396 3396
> >
> >Before the last pool exhaustion going down:
> >3395 3395 3389 3379 3379 3374 3367 3360 3352 3343 3343 3343 3342 3336
> >3332 3324 3318 3314 3310 3307 3305 3299 3290 3283 3279 3272 3266 3265
> >3247 3247 3247 3242 3236 3236
> >
> Here I stopped vdr (and so closed all dvb_demux devices), the number
> was remaining the same 3236, even after restart of vdr (and restart
> of streaming).

So it does suggest a leak. Probably somewhere on an error path,
e.g. its lost video sync.

     Andrew