>Richard Röjfors <richard.rojfors@xxxxxxxxxxxxxx> wrote: >On 08/04/2010 11:50 AM, Pawel Osciak wrote: >>> >>> How do you propose to allocate the buffers? They need to be contiguous >>> and using uncached memory gave really bad performance. >> >> 829440 bytes is a quite a lot and one can't reliably depend on kmalloc >> to be able to allocate such big chunks of contiguous memory. Were you >> testing this on a freshly rebooted system? > >The systems have been running for a while, but not days. >I don't see why would dma_alloc_coherent work better than kmalloc? > In principle it wouldn't. It's just it's much less intensively used and allocates from a special area. Not really a bullet-proof solution either though, I agree. Best regards -- Pawel Osciak Linux Platform Group Samsung Poland R&D Center -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
