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Thu, 22 Apr 2021 01:16:44 -0700 (PDT) From: Claire Chang To: Joerg Roedel , Will Deacon , Frank Rowand , Konrad Rzeszutek Wilk , boris.ostrovsky@oracle.com, jgross@suse.com, Christoph Hellwig , Marek Szyprowski Cc: benh@kernel.crashing.org, paulus@samba.org, "list@263.net:IOMMU DRIVERS" , sstabellini@kernel.org, Robin Murphy , grant.likely@arm.com, xypron.glpk@gmx.de, Thierry Reding , mingo@kernel.org, bauerman@linux.ibm.com, peterz@infradead.org, Greg KH , Saravana Kannan , "Rafael J . Wysocki" , heikki.krogerus@linux.intel.com, Andy Shevchenko , Randy Dunlap , Dan Williams , Bartosz Golaszewski , linux-devicetree , lkml , linuxppc-dev@lists.ozlabs.org, xen-devel@lists.xenproject.org, Nicolas Boichat , Jim Quinlan , tfiga@chromium.org, bskeggs@redhat.com, bhelgaas@google.com, chris@chris-wilson.co.uk, tientzu@chromium.org, daniel@ffwll.ch, airlied@linux.ie, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, jani.nikula@linux.intel.com, jxgao@google.com, joonas.lahtinen@linux.intel.com, linux-pci@vger.kernel.org, maarten.lankhorst@linux.intel.com, matthew.auld@intel.com, nouveau@lists.freedesktop.org, rodrigo.vivi@intel.com, thomas.hellstrom@linux.intel.com Subject: [PATCH v5 10/16] swiotlb: Move alloc_size to find_slots Date: Thu, 22 Apr 2021 16:15:02 +0800 Message-Id: <20210422081508.3942748-11-tientzu@chromium.org> X-Mailer: git-send-email 2.31.1.368.gbe11c130af-goog In-Reply-To: <20210422081508.3942748-1-tientzu@chromium.org> References: <20210422081508.3942748-1-tientzu@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @chromium.org) Content-Type: text/plain; charset="utf-8" Move the maintenance of alloc_size to find_slots for better code reusability later. Signed-off-by: Claire Chang --- kernel/dma/swiotlb.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index 96ff36d8ec53..b7d634d7a7eb 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -479,8 +479,11 @@ static int find_slots(struct device *dev, phys_addr_t = orig_addr, return -1; =20 found: - for (i =3D index; i < index + nslots; i++) + for (i =3D index; i < index + nslots; i++) { mem->slots[i].list =3D 0; + mem->slots[i].alloc_size =3D + alloc_size - ((i - index) << IO_TLB_SHIFT); + } for (i =3D index - 1; io_tlb_offset(i) !=3D IO_TLB_SEGSIZE - 1 && mem->slots[i].list; i--) @@ -535,11 +538,8 @@ phys_addr_t swiotlb_tbl_map_single(struct device *dev,= phys_addr_t orig_addr, * This is needed when we sync the memory. Then we sync the buffer if * needed. */ - for (i =3D 0; i < nr_slots(alloc_size + offset); i++) { + for (i =3D 0; i < nr_slots(alloc_size + offset); i++) mem->slots[index + i].orig_addr =3D slot_addr(orig_addr, i); - mem->slots[index + i].alloc_size =3D - alloc_size - (i << IO_TLB_SHIFT); - } tlb_addr =3D slot_addr(mem->start, index) + offset; if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC) && (dir =3D=3D DMA_TO_DEVICE || dir =3D=3D DMA_BIDIRECTIONAL)) --=20 2.31.1.368.gbe11c130af-goog