From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Date: Tue, 31 Jul 2018 08:07:23 +0000 Subject: Re: [PATCH] PCI: call dma_debug_add_bus for pci_bus_type in common code Message-Id: <20180731080723.GA23303@lst.de> List-Id: References: <20180730073842.16092-1-hch@lst.de> <20180730211713.GA45322@bhelgaas-glaptop.roam.corp.google.com> In-Reply-To: <20180730211713.GA45322@bhelgaas-glaptop.roam.corp.google.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Bjorn Helgaas Cc: Christoph Hellwig , linux-pci@vger.kernel.org, iommu@lists.linux-foundation.org, linuxppc-dev@lists.ozlabs.org, x86@kernel.org, linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org, Joerg Roedel On Mon, Jul 30, 2018 at 04:17:13PM -0500, Bjorn Helgaas wrote: > [+cc Joerg] > > On Mon, Jul 30, 2018 at 09:38:42AM +0200, Christoph Hellwig wrote: > > There is nothing arch specific about PCI or dma-debug, so move this > > call to common code just after registering the bus type. > > I assume that previously, even if the user set CONFIG_DMA_API_DEBUG=y > we only got PCI DMA debug on powerpc, sh, and x86. And after this > patch, we'll get PCI DMA debug on *all* arches? Yes. Note that this only covers the actual bus related part, that is warning about outstanding dma mappings on unload. The rest of the dma api debugging already is entirely generic.