PROBLEM: iwlagn kernel 2.6.32.3 ooops
in [Kernel]
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From: reinette chatre on 9 Feb 2010 12:10 Hi Stanislaw, On Tue, 2010-02-09 at 08:52 -0800, Stanislaw Gruszka wrote: > > > > [250420.677168] Pid: 11584, comm: ip Not tainted 2.6.32.3 #5 > > > [250420.677173] Call Trace: > > > [250420.677190] [<c10a53f8>] ? __alloc_pages_nodemask+0x518/0x5f0 > > > [250420.677204] [<c1007c20>] ? dma_generic_alloc_coherent+0x0/0x100 > > > [250420.677214] [<c1007c92>] ? dma_generic_alloc_coherent+0x72/0x100 > > > [250420.677224] [<c1007c20>] ? dma_generic_alloc_coherent+0x0/0x100 > > > [250420.677241] [<fca1c9d5>] ? iwl_tx_queue_init+0x285/0x380 [iwlcore] > > That is at initialization time. To avoid atomic allocation we can just > use dma_alloc_coherent instead of pci_alloc_consistent. I'm going to > prepare a patch. I do not understand your goal here ... as seen in this trace pci_alloc_consistent itself already calls dma_alloc_coherent right away. Reinette -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
From: Stanislaw Gruszka on 10 Feb 2010 03:30
Hi On Tue, Feb 09, 2010 at 09:04:52AM -0800, reinette chatre wrote: > I do not understand your goal here ... as seen in this trace > pci_alloc_consistent itself already calls dma_alloc_coherent right away. We can call dma_alloc_coherent with GFP_KERNEL, pci_alloc_consistent is more or less equal to dma_alloc_coherent with GFP_ATOMIC flag. Stanislaw -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |