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Date: Wed, 21 Apr 2010 12:41:38 +0200 From: Joerg Roedel <joerg.roedel@....com> To: Peter Zijlstra <peterz@...radead.org> CC: Greg KH <greg@...ah.com>, Joerg Roedel <joro@...tes.org>, Jesse Barnes <jbarnes@...tuousgeek.org>, linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: pci_get_dev_by_id() from interrupt handlers On Wed, Apr 21, 2010 at 12:21:11PM +0200, Peter Zijlstra wrote: > On Wed, 2010-04-21 at 12:05 +0200, Joerg Roedel wrote: > > > > > Why not do the whole thing in an interrupt task as the whole thing > > > sounds like something that shouldn't be done in interrupt context, > > > right? Now that we have this type of functionality, we should take > > > advantage of it :) > > > > Ok, I think I move the IOMMU interrupt handling to a tasklet. > > > tasklet is softirq context, and is not what gregkh was talking about. > > You'd still need to change the klist spinlock to be softirq-safe. Ah right. Thanks for pointing this out. I couldn't find much about the interrupt tasks. Is it about the request_threaded_irq interface? And this would be run in the context of a kernel thread, right? Joerg -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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