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From: Christoph Hellwig <hch@lst.de>
To: iommu@lists.linux-foundation.org,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Jesper Dangaard Brouer <brouer@redhat.com>
Cc: "Tariq Toukan" <tariqt@mellanox.com>,
	"Ilias Apalodimas" <ilias.apalodimas@linaro.org>,
	"Toke Høiland-Jørgensen" <toke@toke.dk>,
	"Robin Murphy" <robin.murphy@arm.com>,
	"Konrad Rzeszutek Wilk" <konrad.wilk@oracle.com>,
	"Tony Luck" <tony.luck@intel.com>,
	"Fenghua Yu" <fenghua.yu@intel.com>,
	"Marek Szyprowski" <m.szyprowski@samsung.com>,
	"Keith Busch" <keith.busch@intel.com>,
	"Jonathan Derrick" <jonathan.derrick@intel.com>,
	linux-pci@vger.kernel.org, linux-ia64@vger.kernel.org,
	x86@kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 06/15] dma-mapping: simplify the dma_sync_single_range_for_{cpu,device} implementation
Date: Fri,  7 Dec 2018 11:07:11 -0800
Message-ID: <20181207190720.18517-7-hch@lst.de> (raw)
In-Reply-To: <20181207190720.18517-1-hch@lst.de>

We can just call the regular calls after adding offset the the address instead
of reimplementing them.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 include/linux/dma-debug.h   | 27 ------------------------
 include/linux/dma-mapping.h | 34 +++++++++---------------------
 kernel/dma/debug.c          | 42 -------------------------------------
 3 files changed, 10 insertions(+), 93 deletions(-)

diff --git a/include/linux/dma-debug.h b/include/linux/dma-debug.h
index 30213adbb6b9..c85e097a984c 100644
--- a/include/linux/dma-debug.h
+++ b/include/linux/dma-debug.h
@@ -72,17 +72,6 @@ extern void debug_dma_sync_single_for_device(struct device *dev,
 					     dma_addr_t dma_handle,
 					     size_t size, int direction);
 
-extern void debug_dma_sync_single_range_for_cpu(struct device *dev,
-						dma_addr_t dma_handle,
-						unsigned long offset,
-						size_t size,
-						int direction);
-
-extern void debug_dma_sync_single_range_for_device(struct device *dev,
-						   dma_addr_t dma_handle,
-						   unsigned long offset,
-						   size_t size, int direction);
-
 extern void debug_dma_sync_sg_for_cpu(struct device *dev,
 				      struct scatterlist *sg,
 				      int nelems, int direction);
@@ -174,22 +163,6 @@ static inline void debug_dma_sync_single_for_device(struct device *dev,
 {
 }
 
-static inline void debug_dma_sync_single_range_for_cpu(struct device *dev,
-						       dma_addr_t dma_handle,
-						       unsigned long offset,
-						       size_t size,
-						       int direction)
-{
-}
-
-static inline void debug_dma_sync_single_range_for_device(struct device *dev,
-							  dma_addr_t dma_handle,
-							  unsigned long offset,
-							  size_t size,
-							  int direction)
-{
-}
-
 static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
 					     struct scatterlist *sg,
 					     int nelems, int direction)
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 7799c2b27849..8916499d2805 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -360,6 +360,13 @@ static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr,
 	debug_dma_sync_single_for_cpu(dev, addr, size, dir);
 }
 
+static inline void dma_sync_single_range_for_cpu(struct device *dev,
+		dma_addr_t addr, unsigned long offset, size_t size,
+		enum dma_data_direction dir)
+{
+	return dma_sync_single_for_cpu(dev, addr + offset, size, dir);
+}
+
 static inline void dma_sync_single_for_device(struct device *dev,
 					      dma_addr_t addr, size_t size,
 					      enum dma_data_direction dir)
@@ -372,32 +379,11 @@ static inline void dma_sync_single_for_device(struct device *dev,
 	debug_dma_sync_single_for_device(dev, addr, size, dir);
 }
 
-static inline void dma_sync_single_range_for_cpu(struct device *dev,
-						 dma_addr_t addr,
-						 unsigned long offset,
-						 size_t size,
-						 enum dma_data_direction dir)
-{
-	const struct dma_map_ops *ops = get_dma_ops(dev);
-
-	BUG_ON(!valid_dma_direction(dir));
-	if (ops->sync_single_for_cpu)
-		ops->sync_single_for_cpu(dev, addr + offset, size, dir);
-	debug_dma_sync_single_range_for_cpu(dev, addr, offset, size, dir);
-}
-
 static inline void dma_sync_single_range_for_device(struct device *dev,
-						    dma_addr_t addr,
-						    unsigned long offset,
-						    size_t size,
-						    enum dma_data_direction dir)
+		dma_addr_t addr, unsigned long offset, size_t size,
+		enum dma_data_direction dir)
 {
-	const struct dma_map_ops *ops = get_dma_ops(dev);
-
-	BUG_ON(!valid_dma_direction(dir));
-	if (ops->sync_single_for_device)
-		ops->sync_single_for_device(dev, addr + offset, size, dir);
-	debug_dma_sync_single_range_for_device(dev, addr, offset, size, dir);
+	return dma_sync_single_for_device(dev, addr + offset, size, dir);
 }
 
 static inline void
diff --git a/kernel/dma/debug.c b/kernel/dma/debug.c
index 231ca4628062..3214833b47e2 100644
--- a/kernel/dma/debug.c
+++ b/kernel/dma/debug.c
@@ -1662,48 +1662,6 @@ void debug_dma_sync_single_for_device(struct device *dev,
 }
 EXPORT_SYMBOL(debug_dma_sync_single_for_device);
 
-void debug_dma_sync_single_range_for_cpu(struct device *dev,
-					 dma_addr_t dma_handle,
-					 unsigned long offset, size_t size,
-					 int direction)
-{
-	struct dma_debug_entry ref;
-
-	if (unlikely(dma_debug_disabled()))
-		return;
-
-	ref.type         = dma_debug_single;
-	ref.dev          = dev;
-	ref.dev_addr     = dma_handle;
-	ref.size         = offset + size;
-	ref.direction    = direction;
-	ref.sg_call_ents = 0;
-
-	check_sync(dev, &ref, true);
-}
-EXPORT_SYMBOL(debug_dma_sync_single_range_for_cpu);
-
-void debug_dma_sync_single_range_for_device(struct device *dev,
-					    dma_addr_t dma_handle,
-					    unsigned long offset,
-					    size_t size, int direction)
-{
-	struct dma_debug_entry ref;
-
-	if (unlikely(dma_debug_disabled()))
-		return;
-
-	ref.type         = dma_debug_single;
-	ref.dev          = dev;
-	ref.dev_addr     = dma_handle;
-	ref.size         = offset + size;
-	ref.direction    = direction;
-	ref.sg_call_ents = 0;
-
-	check_sync(dev, &ref, false);
-}
-EXPORT_SYMBOL(debug_dma_sync_single_range_for_device);
-
 void debug_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
 			       int nelems, int direction)
 {
-- 
2.19.1


  parent reply index

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-07 19:07 [RFC] avoid indirect calls for DMA direct mappings v2 Christoph Hellwig
2018-12-07 19:07 ` [PATCH 01/15] swiotlb: remove SWIOTLB_MAP_ERROR Christoph Hellwig
2018-12-07 19:07 ` [PATCH 02/15] swiotlb: remove dma_mark_clean Christoph Hellwig
2019-01-02 21:53   ` Tony Luck
2019-01-03  7:23     ` Christoph Hellwig
2019-01-03 17:35       ` Tony Luck
2019-01-04  8:09         ` Christoph Hellwig
2018-12-07 19:07 ` [PATCH 03/15] dma-direct: improve addressability error reporting Christoph Hellwig
2018-12-07 19:07 ` [PATCH 04/15] dma-direct: use dma_direct_map_page to implement dma_direct_map_sg Christoph Hellwig
2018-12-07 19:07 ` [PATCH 05/15] dma-direct: merge swiotlb_dma_ops into the dma_direct code Christoph Hellwig
2018-12-07 19:07 ` Christoph Hellwig [this message]
2018-12-07 19:07 ` [PATCH 07/15] dma-mapping: merge dma_unmap_page_attrs and dma_unmap_single_attrs Christoph Hellwig
2018-12-07 19:07 ` [PATCH 08/15] dma-mapping: move dma_get_required_mask to kernel/dma Christoph Hellwig
2018-12-07 19:07 ` [PATCH 09/15] dma-mapping: move various slow path functions out of line Christoph Hellwig
2018-12-07 19:07 ` [PATCH 10/15] dma-mapping: move dma_cache_sync " Christoph Hellwig
2018-12-07 19:07 ` [PATCH 11/15] dma-mapping: always build the direct mapping code Christoph Hellwig
2018-12-07 19:07 ` [PATCH 12/15] dma-mapping: factor out dummy DMA ops Christoph Hellwig
2018-12-07 19:07 ` [PATCH 13/15] ACPI / scan: Refactor _CCA enforcement Christoph Hellwig
2018-12-14 21:15   ` Bjorn Helgaas
2018-12-07 19:07 ` [PATCH 14/15] vmd: use the proper dma_* APIs instead of direct methods calls Christoph Hellwig
2018-12-14 21:17   ` Bjorn Helgaas
2018-12-14 21:34     ` Derrick, Jonathan
2018-12-07 19:07 ` [PATCH 15/15] dma-mapping: bypass indirect calls for dma-direct Christoph Hellwig
2018-12-14 14:11   ` Marek Szyprowski
2018-12-14 14:24     ` Christoph Hellwig
2018-12-14 14:32       ` Marek Szyprowski
2018-12-15 17:46   ` [15/15] " Guenter Roeck
2018-12-16  9:02     ` Christoph Hellwig
2018-12-18 20:34   ` Guillaume Tucker
2018-12-18 20:42     ` Robin Murphy
2018-12-19  6:42       ` Christoph Hellwig
2018-12-20 16:44   ` [PATCH 15/15] " Thierry Reding
2018-12-20 16:46     ` Christoph Hellwig
2018-12-08 16:06 ` [RFC] avoid indirect calls for DMA direct mappings v2 Jesper Dangaard Brouer
2018-12-08 16:50   ` Christoph Hellwig
2018-12-10 21:51 ` Luck, Tony
2018-12-11  6:51   ` Christoph Hellwig
2018-12-11 16:42     ` Luck, Tony
2018-12-11 17:13     ` Luck, Tony
2018-12-11 17:15       ` Christoph Hellwig
2018-12-13 20:08 ` Christoph Hellwig

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