Messages in this thread |  | | Date | Sat, 19 Jan 2013 19:59:07 +0100 | From | Andrew Lunn <> | Subject | Re: [PATCH v2] mm: dmapool: use provided gfp flags for all dma_alloc_coherent() calls |
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> Please find attached a debug log generated with your patch. > > I used the sata disk and two em28xx dvb sticks, no other usb devices, > no ethernet cable connected, tuners on saa716x-based card not used. > > What I can see in the log: a lot of coherent mappings from sata_mv > and orion_ehci, a few from mv643xx_eth, no other coherent mappings. > All coherent mappings are page aligned, some of them (from orion_ehci) > are not really small (as claimed in __alloc_from_pool). > > I don't believe in a memory leak. When I restart vdr (the application > utilizing the dvb sticks) then there is enough dma memory available > again.
Hi Soeren
We should be able to rule out a leak. Mount debugfg and then:
while [ /bin/true ] ; do cat /debug/dma-api/num_free_entries ; sleep 60 ; done
while you are capturing. See if the number goes down.
Andrew
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