Re: [RFC] CONFIG_NET_DMA can hang the system if DMA engine driveruses tasklets

From: Ilya Yanok
Date: Thu Oct 07 2010 - 19:49:07 EST


Hi Dan,

08.10.2010 3:33, Dan Williams wrote:
3. Try to free the descriptors not only from tasklet but also from the
place they get requested.

This is what ioatdma and iop-adma do i.e. process descriptor reclaim
from the allocation failure path. For example in ioat2_check_space_lock():

Thanks for the quick answer! I'll fix the mpc512x_dma driver then.

Regards, Ilya.
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