Messages in this thread | | | Subject | Re: [PATCH] pci: show dma_mask bits in /sys | From | Andi Kleen <> | Date | Fri, 24 Oct 2008 12:50:12 +0200 |
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Grant Grundler <grundler@parisc-linux.org> writes:
> On Wed, Oct 22, 2008 at 09:28:33PM -0600, Matthew Wilcox wrote: >> On Wed, Oct 22, 2008 at 06:45:10PM -0700, Yinghai Lu wrote: >> > Grant prefer to add it /sys instead of showing in bootlog >> > >> > so could catch if the driver set the correct dma_mask. >> >> I still don't think this is useful information to be exposing. > > It's useful for anyone involved with device drivers - we agree that's > a very limited subset of users. I certainly get fed up with trying > to figure out which dma_mask each driver is using since in some
One simple way that doesn't need any kernel changes is to use crash on the running kernel. I personally just stuck in printks when I needed that, but it doesn't strike me as something that is generally useful in standard kernels (agreeing with Willy)
-Andi -- ak@linux.intel.com
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