Messages in this thread | | | Date | Mon, 8 Feb 1999 00:34:43 +0100 (CET) | From | Andrea Arcangeli <> | Subject | Re: Sound error: Couldn't allocate DMA buffer |
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On Sun, 7 Feb 1999, Mark Lord wrote:
>Ever since 2.1.131 (Dec.6/98), my UP systems sees a lot of these >(even withe 2.2.2-pre2 from the "test" directory): > >Feb 5 22:08:08 foxy kernel: Sound error: Couldn't allocate DMA buffer >Feb 5 22:08:18 foxy last message repeated 7 times >Feb 5 22:09:38 foxy last message repeated 44 times >Feb 5 22:10:31 foxy last message repeated 36 times >Feb 5 22:11:39 foxy last message repeated 19 times >Feb 5 22:12:36 foxy last message repeated 25 times >Feb 5 22:13:11 foxy last message repeated 17 times >Feb 5 22:14:07 foxy last message repeated 4 times >... > >Did anyone ever figure out the cause?
Take a look at SHIFT+SCROLL-LOCK and you should find a little of memory and mostly fragmented. If not it could mean that all your GFP_DMA pages are not freeable.
I also noticed that the get_free_pages() in dmabuf.c is ATOMIC. Maybe it could be converted to a GFP_KERNEL?
Andrea Arcangeli
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