* Dmaengine problem
@ 2010-04-14 6:31 rd bairva
0 siblings, 0 replies; only message in thread
From: rd bairva @ 2010-04-14 6:31 UTC (permalink / raw)
To: linux-arm-kernel
Hi,
? ? ? ?I am currently writing dmaengine compatible DMA driver for our ARM
based architecture, But I am facing some performance issues doing
that.
1. dmaengine says callback should run in tasklet, and next transfer
cannot be scheduled from the callback.
Due to these restrictions I am getting some performance issue while
playing sound in our architecture.
Can callback call in DMA driver be placed out of spin_lock to submit
new operations from callback? (only in asynchronous case)
is this Ok? please comment.
Thanks and regards,
Ramdayal
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2010-04-14 6:31 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2010-04-14 6:31 Dmaengine problem rd bairva
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).