On Wed, 2011-08-17 at 15:06 +0200, Marek Szyprowski wrote: [...] > > > Maybe for the first version a static pool with reasonably small size > > > (like 128KiB) will be more than enough? This size can be even board > > > depended or changed with kernel command line for systems that really > > > needs more memory. > > > > For a first version that sounds good enough. Maybe we could use a fraction > > of the CONSISTENT_DMA_SIZE as an estimate? > > Ok, good. For the initial values I will probably use 1/8 of > CONSISTENT_DMA_SIZE for coherent allocations. Writecombine atomic allocations > are extremely rare and rather ARM specific. 1/32 of CONSISTENT_DMA_SIZE should > be more than enough for them. For people who aren't aware, we have a patch to remove the define CONSISTENT_DMA_SIZE and replace it with a runtime call to an initialisation function [1]. I don't believe this fundamentally changes anything being discussed though. -- Tixy [1] http://www.spinics.net/lists/arm-kernel/msg135589.html -- 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
