> -----Original Message----- > From: Ameya Palande [mailto:2ameya@xxxxxxxxx] > Sent: Monday, March 16, 2009 7:30 PM > To: Menon, Nishanth > Cc: Gupta, Ramesh; Kevin Hilman; linux-omap@xxxxxxxxxxxxxxx; Ramirez Luna, > Omar; Kanigeri, Hari; Ameya Palande; Guzman Lugo, Fernando > Subject: Re: dma_alloc_coherent bug? > > There seems to be a bug some where inside DMA / VM area which is > causing this fragmentation. > > Any clue?? Russell mentioned sometime back: http://lkml.indiana.edu/hypermail/linux/kernel/0706.0/0370.html So I suppose dma_alloc_coherent for > 1page size(4096) is bad? If so hmm.. I am guessing audio driver and others do use dma_alloc_coherent.. I tried my dummy driver on omapzoom master and it seemd to work fine there for 10K iterations :(.. should'nt the same fragmentation hit there too? Any clues? Regards, Nishanth Menon ��.n��������+%������w��{.n�����{�������ܨ}���Ơz�j:+v�����w����ޙ��&�)ߡ�a����z�ޗ���ݢj��w�f
