Merge branch 'akpm' (patches from Andrew)
Merge third patch-bomb from Andrew Morton: "I'm pretty much done for -rc1 now: - the rest of MM, basically - lib/ updates - checkpatch, epoll, hfs, fatfs, ptrace, coredump, exit - cpu_mask simplifications - kexec, rapidio, MAINTAINERS etc, etc. - more dma-mapping cleanups/simplifications from hch" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (109 commits) MAINTAINERS: add/fix git URLs for various subsystems mm: memcontrol: add "sock" to cgroup2 memory.stat mm: memcontrol: basic memory statistics in cgroup2 memory controller mm: memcontrol: do not uncharge old page in page cache replacement Documentation: cgroup: add memory.swap.{current,max} description mm: free swap cache aggressively if memcg swap is full mm: vmscan: do not scan anon pages if memcg swap limit is hit swap.h: move memcg related stuff to the end of the file mm: memcontrol: replace mem_cgroup_lruvec_online with mem_cgroup_online mm: vmscan: pass memcg to get_scan_count() mm: memcontrol: charge swap to cgroup2 mm: memcontrol: clean up alloc, online, offline, free functions mm: memcontrol: flatten struct cg_proto mm: memcontrol: rein in the CONFIG space madness net: drop tcp_memcontrol.c mm: memcontrol: introduce CONFIG_MEMCG_LEGACY_KMEM mm: memcontrol: allow to disable kmem accounting for cgroup2 mm: memcontrol: account "kmem" consumers in cgroup2 memory controller mm: memcontrol: move kmem accounting code to CONFIG_MEMCG mm: memcontrol: separate kmem code from legacy tcp accounting code ...
This commit is contained in:
Linus Torvalds
@@ -1,32 +0,0 @@
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#ifndef DMA_COHERENT_H
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#define DMA_COHERENT_H
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#ifdef CONFIG_HAVE_GENERIC_DMA_COHERENT
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/*
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* These three functions are only for dma allocator.
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* Don't use them in device drivers.
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*/
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int dma_alloc_from_coherent(struct device *dev, ssize_t size,
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dma_addr_t *dma_handle, void **ret);
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int dma_release_from_coherent(struct device *dev, int order, void *vaddr);
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int dma_mmap_from_coherent(struct device *dev, struct vm_area_struct *vma,
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void *cpu_addr, size_t size, int *ret);
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/*
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* Standard interface
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*/
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#define ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY
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int dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr,
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dma_addr_t device_addr, size_t size, int flags);
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void dma_release_declared_memory(struct device *dev);
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void *dma_mark_declared_memory_occupied(struct device *dev,
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dma_addr_t device_addr, size_t size);
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#else
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#define dma_alloc_from_coherent(dev, size, handle, ret) (0)
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#define dma_release_from_coherent(dev, order, vaddr) (0)
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#define dma_mmap_from_coherent(dev, vma, vaddr, order, ret) (0)
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#endif
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#endif
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@@ -1,95 +0,0 @@
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#ifndef _ASM_GENERIC_DMA_MAPPING_H
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#define _ASM_GENERIC_DMA_MAPPING_H
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/* define the dma api to allow compilation but not linking of
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* dma dependent code. Code that depends on the dma-mapping
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* API needs to set 'depends on HAS_DMA' in its Kconfig
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*/
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struct scatterlist;
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extern void *
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dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
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gfp_t flag);
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extern void
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dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
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dma_addr_t dma_handle);
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static inline void *dma_alloc_attrs(struct device *dev, size_t size,
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dma_addr_t *dma_handle, gfp_t flag,
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struct dma_attrs *attrs)
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{
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/* attrs is not supported and ignored */
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return dma_alloc_coherent(dev, size, dma_handle, flag);
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}
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static inline void dma_free_attrs(struct device *dev, size_t size,
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void *cpu_addr, dma_addr_t dma_handle,
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struct dma_attrs *attrs)
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{
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/* attrs is not supported and ignored */
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dma_free_coherent(dev, size, cpu_addr, dma_handle);
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}
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#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
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#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
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extern dma_addr_t
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dma_map_single(struct device *dev, void *ptr, size_t size,
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enum dma_data_direction direction);
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extern void
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dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
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enum dma_data_direction direction);
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extern int
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dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
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enum dma_data_direction direction);
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extern void
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dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
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enum dma_data_direction direction);
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extern dma_addr_t
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dma_map_page(struct device *dev, struct page *page, unsigned long offset,
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size_t size, enum dma_data_direction direction);
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extern void
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dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
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enum dma_data_direction direction);
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extern void
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dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
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enum dma_data_direction direction);
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extern void
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dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
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unsigned long offset, size_t size,
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enum dma_data_direction direction);
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extern void
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dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
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enum dma_data_direction direction);
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#define dma_sync_single_for_device dma_sync_single_for_cpu
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#define dma_sync_single_range_for_device dma_sync_single_range_for_cpu
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#define dma_sync_sg_for_device dma_sync_sg_for_cpu
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extern int
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dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
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extern int
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dma_supported(struct device *dev, u64 mask);
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extern int
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dma_set_mask(struct device *dev, u64 mask);
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extern int
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dma_get_cache_alignment(void);
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extern void
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dma_cache_sync(struct device *dev, void *vaddr, size_t size,
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enum dma_data_direction direction);
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#endif /* _ASM_GENERIC_DMA_MAPPING_H */
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@@ -1,358 +0,0 @@
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#ifndef _ASM_GENERIC_DMA_MAPPING_H
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#define _ASM_GENERIC_DMA_MAPPING_H
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#include <linux/kmemcheck.h>
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#include <linux/bug.h>
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#include <linux/scatterlist.h>
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#include <linux/dma-debug.h>
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#include <linux/dma-attrs.h>
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#include <asm-generic/dma-coherent.h>
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static inline dma_addr_t dma_map_single_attrs(struct device *dev, void *ptr,
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size_t size,
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enum dma_data_direction dir,
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struct dma_attrs *attrs)
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{
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struct dma_map_ops *ops = get_dma_ops(dev);
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dma_addr_t addr;
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kmemcheck_mark_initialized(ptr, size);
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BUG_ON(!valid_dma_direction(dir));
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addr = ops->map_page(dev, virt_to_page(ptr),
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(unsigned long)ptr & ~PAGE_MASK, size,
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dir, attrs);
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debug_dma_map_page(dev, virt_to_page(ptr),
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(unsigned long)ptr & ~PAGE_MASK, size,
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dir, addr, true);
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return addr;
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}
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static inline void dma_unmap_single_attrs(struct device *dev, dma_addr_t addr,
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size_t size,
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enum dma_data_direction dir,
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struct dma_attrs *attrs)
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{
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struct dma_map_ops *ops = get_dma_ops(dev);
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BUG_ON(!valid_dma_direction(dir));
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if (ops->unmap_page)
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ops->unmap_page(dev, addr, size, dir, attrs);
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debug_dma_unmap_page(dev, addr, size, dir, true);
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}
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/*
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* dma_maps_sg_attrs returns 0 on error and > 0 on success.
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* It should never return a value < 0.
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*/
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static inline int dma_map_sg_attrs(struct device *dev, struct scatterlist *sg,
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int nents, enum dma_data_direction dir,
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struct dma_attrs *attrs)
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{
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struct dma_map_ops *ops = get_dma_ops(dev);
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int i, ents;
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struct scatterlist *s;
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for_each_sg(sg, s, nents, i)
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kmemcheck_mark_initialized(sg_virt(s), s->length);
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BUG_ON(!valid_dma_direction(dir));
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ents = ops->map_sg(dev, sg, nents, dir, attrs);
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BUG_ON(ents < 0);
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debug_dma_map_sg(dev, sg, nents, ents, dir);
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return ents;
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}
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static inline void dma_unmap_sg_attrs(struct device *dev, struct scatterlist *sg,
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int nents, enum dma_data_direction dir,
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struct dma_attrs *attrs)
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{
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struct dma_map_ops *ops = get_dma_ops(dev);
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BUG_ON(!valid_dma_direction(dir));
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debug_dma_unmap_sg(dev, sg, nents, dir);
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if (ops->unmap_sg)
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ops->unmap_sg(dev, sg, nents, dir, attrs);
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}
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static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
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size_t offset, size_t size,
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enum dma_data_direction dir)
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{
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struct dma_map_ops *ops = get_dma_ops(dev);
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dma_addr_t addr;
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kmemcheck_mark_initialized(page_address(page) + offset, size);
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BUG_ON(!valid_dma_direction(dir));
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addr = ops->map_page(dev, page, offset, size, dir, NULL);
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debug_dma_map_page(dev, page, offset, size, dir, addr, false);
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return addr;
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}
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static inline void dma_unmap_page(struct device *dev, dma_addr_t addr,
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size_t size, enum dma_data_direction dir)
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{
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struct dma_map_ops *ops = get_dma_ops(dev);
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BUG_ON(!valid_dma_direction(dir));
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if (ops->unmap_page)
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ops->unmap_page(dev, addr, size, dir, NULL);
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debug_dma_unmap_page(dev, addr, size, dir, false);
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}
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static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr,
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size_t size,
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enum dma_data_direction dir)
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{
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struct dma_map_ops *ops = get_dma_ops(dev);
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BUG_ON(!valid_dma_direction(dir));
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if (ops->sync_single_for_cpu)
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ops->sync_single_for_cpu(dev, addr, size, dir);
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debug_dma_sync_single_for_cpu(dev, addr, size, dir);
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}
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static inline void dma_sync_single_for_device(struct device *dev,
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dma_addr_t addr, size_t size,
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enum dma_data_direction dir)
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{
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struct dma_map_ops *ops = get_dma_ops(dev);
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BUG_ON(!valid_dma_direction(dir));
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if (ops->sync_single_for_device)
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ops->sync_single_for_device(dev, addr, size, dir);
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debug_dma_sync_single_for_device(dev, addr, size, dir);
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}
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static inline void dma_sync_single_range_for_cpu(struct device *dev,
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dma_addr_t addr,
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unsigned long offset,
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size_t size,
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enum dma_data_direction dir)
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{
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const struct dma_map_ops *ops = get_dma_ops(dev);
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BUG_ON(!valid_dma_direction(dir));
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if (ops->sync_single_for_cpu)
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ops->sync_single_for_cpu(dev, addr + offset, size, dir);
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debug_dma_sync_single_range_for_cpu(dev, addr, offset, size, dir);
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}
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static inline void dma_sync_single_range_for_device(struct device *dev,
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dma_addr_t addr,
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unsigned long offset,
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size_t size,
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enum dma_data_direction dir)
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{
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const struct dma_map_ops *ops = get_dma_ops(dev);
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BUG_ON(!valid_dma_direction(dir));
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if (ops->sync_single_for_device)
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ops->sync_single_for_device(dev, addr + offset, size, dir);
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debug_dma_sync_single_range_for_device(dev, addr, offset, size, dir);
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}
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static inline void
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dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
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int nelems, enum dma_data_direction dir)
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{
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struct dma_map_ops *ops = get_dma_ops(dev);
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BUG_ON(!valid_dma_direction(dir));
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if (ops->sync_sg_for_cpu)
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ops->sync_sg_for_cpu(dev, sg, nelems, dir);
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debug_dma_sync_sg_for_cpu(dev, sg, nelems, dir);
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}
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static inline void
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dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
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int nelems, enum dma_data_direction dir)
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{
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struct dma_map_ops *ops = get_dma_ops(dev);
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BUG_ON(!valid_dma_direction(dir));
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if (ops->sync_sg_for_device)
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ops->sync_sg_for_device(dev, sg, nelems, dir);
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debug_dma_sync_sg_for_device(dev, sg, nelems, dir);
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}
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#define dma_map_single(d, a, s, r) dma_map_single_attrs(d, a, s, r, NULL)
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#define dma_unmap_single(d, a, s, r) dma_unmap_single_attrs(d, a, s, r, NULL)
|
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#define dma_map_sg(d, s, n, r) dma_map_sg_attrs(d, s, n, r, NULL)
|
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#define dma_unmap_sg(d, s, n, r) dma_unmap_sg_attrs(d, s, n, r, NULL)
|
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|
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extern int dma_common_mmap(struct device *dev, struct vm_area_struct *vma,
|
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void *cpu_addr, dma_addr_t dma_addr, size_t size);
|
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|
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void *dma_common_contiguous_remap(struct page *page, size_t size,
|
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unsigned long vm_flags,
|
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pgprot_t prot, const void *caller);
|
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|
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void *dma_common_pages_remap(struct page **pages, size_t size,
|
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unsigned long vm_flags, pgprot_t prot,
|
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const void *caller);
|
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void dma_common_free_remap(void *cpu_addr, size_t size, unsigned long vm_flags);
|
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|
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/**
|
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* dma_mmap_attrs - map a coherent DMA allocation into user space
|
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* @dev: valid struct device pointer, or NULL for ISA and EISA-like devices
|
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* @vma: vm_area_struct describing requested user mapping
|
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* @cpu_addr: kernel CPU-view address returned from dma_alloc_attrs
|
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* @handle: device-view address returned from dma_alloc_attrs
|
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* @size: size of memory originally requested in dma_alloc_attrs
|
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* @attrs: attributes of mapping properties requested in dma_alloc_attrs
|
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*
|
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* Map a coherent DMA buffer previously allocated by dma_alloc_attrs
|
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* into user space. The coherent DMA buffer must not be freed by the
|
||||
* driver until the user space mapping has been released.
|
||||
*/
|
||||
static inline int
|
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dma_mmap_attrs(struct device *dev, struct vm_area_struct *vma, void *cpu_addr,
|
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dma_addr_t dma_addr, size_t size, struct dma_attrs *attrs)
|
||||
{
|
||||
struct dma_map_ops *ops = get_dma_ops(dev);
|
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BUG_ON(!ops);
|
||||
if (ops->mmap)
|
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return ops->mmap(dev, vma, cpu_addr, dma_addr, size, attrs);
|
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return dma_common_mmap(dev, vma, cpu_addr, dma_addr, size);
|
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}
|
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|
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#define dma_mmap_coherent(d, v, c, h, s) dma_mmap_attrs(d, v, c, h, s, NULL)
|
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|
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int
|
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dma_common_get_sgtable(struct device *dev, struct sg_table *sgt,
|
||||
void *cpu_addr, dma_addr_t dma_addr, size_t size);
|
||||
|
||||
static inline int
|
||||
dma_get_sgtable_attrs(struct device *dev, struct sg_table *sgt, void *cpu_addr,
|
||||
dma_addr_t dma_addr, size_t size, struct dma_attrs *attrs)
|
||||
{
|
||||
struct dma_map_ops *ops = get_dma_ops(dev);
|
||||
BUG_ON(!ops);
|
||||
if (ops->get_sgtable)
|
||||
return ops->get_sgtable(dev, sgt, cpu_addr, dma_addr, size,
|
||||
attrs);
|
||||
return dma_common_get_sgtable(dev, sgt, cpu_addr, dma_addr, size);
|
||||
}
|
||||
|
||||
#define dma_get_sgtable(d, t, v, h, s) dma_get_sgtable_attrs(d, t, v, h, s, NULL)
|
||||
|
||||
#ifndef arch_dma_alloc_attrs
|
||||
#define arch_dma_alloc_attrs(dev, flag) (true)
|
||||
#endif
|
||||
|
||||
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
|
||||
dma_addr_t *dma_handle, gfp_t flag,
|
||||
struct dma_attrs *attrs)
|
||||
{
|
||||
struct dma_map_ops *ops = get_dma_ops(dev);
|
||||
void *cpu_addr;
|
||||
|
||||
BUG_ON(!ops);
|
||||
|
||||
if (dma_alloc_from_coherent(dev, size, dma_handle, &cpu_addr))
|
||||
return cpu_addr;
|
||||
|
||||
if (!arch_dma_alloc_attrs(&dev, &flag))
|
||||
return NULL;
|
||||
if (!ops->alloc)
|
||||
return NULL;
|
||||
|
||||
cpu_addr = ops->alloc(dev, size, dma_handle, flag, attrs);
|
||||
debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr);
|
||||
return cpu_addr;
|
||||
}
|
||||
|
||||
static inline void dma_free_attrs(struct device *dev, size_t size,
|
||||
void *cpu_addr, dma_addr_t dma_handle,
|
||||
struct dma_attrs *attrs)
|
||||
{
|
||||
struct dma_map_ops *ops = get_dma_ops(dev);
|
||||
|
||||
BUG_ON(!ops);
|
||||
WARN_ON(irqs_disabled());
|
||||
|
||||
if (dma_release_from_coherent(dev, get_order(size), cpu_addr))
|
||||
return;
|
||||
|
||||
if (!ops->free)
|
||||
return;
|
||||
|
||||
debug_dma_free_coherent(dev, size, cpu_addr, dma_handle);
|
||||
ops->free(dev, size, cpu_addr, dma_handle, attrs);
|
||||
}
|
||||
|
||||
static inline void *dma_alloc_coherent(struct device *dev, size_t size,
|
||||
dma_addr_t *dma_handle, gfp_t flag)
|
||||
{
|
||||
return dma_alloc_attrs(dev, size, dma_handle, flag, NULL);
|
||||
}
|
||||
|
||||
static inline void dma_free_coherent(struct device *dev, size_t size,
|
||||
void *cpu_addr, dma_addr_t dma_handle)
|
||||
{
|
||||
return dma_free_attrs(dev, size, cpu_addr, dma_handle, NULL);
|
||||
}
|
||||
|
||||
static inline void *dma_alloc_noncoherent(struct device *dev, size_t size,
|
||||
dma_addr_t *dma_handle, gfp_t gfp)
|
||||
{
|
||||
DEFINE_DMA_ATTRS(attrs);
|
||||
|
||||
dma_set_attr(DMA_ATTR_NON_CONSISTENT, &attrs);
|
||||
return dma_alloc_attrs(dev, size, dma_handle, gfp, &attrs);
|
||||
}
|
||||
|
||||
static inline void dma_free_noncoherent(struct device *dev, size_t size,
|
||||
void *cpu_addr, dma_addr_t dma_handle)
|
||||
{
|
||||
DEFINE_DMA_ATTRS(attrs);
|
||||
|
||||
dma_set_attr(DMA_ATTR_NON_CONSISTENT, &attrs);
|
||||
dma_free_attrs(dev, size, cpu_addr, dma_handle, &attrs);
|
||||
}
|
||||
|
||||
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
|
||||
{
|
||||
debug_dma_mapping_error(dev, dma_addr);
|
||||
|
||||
if (get_dma_ops(dev)->mapping_error)
|
||||
return get_dma_ops(dev)->mapping_error(dev, dma_addr);
|
||||
|
||||
#ifdef DMA_ERROR_CODE
|
||||
return dma_addr == DMA_ERROR_CODE;
|
||||
#else
|
||||
return 0;
|
||||
#endif
|
||||
}
|
||||
|
||||
#ifndef HAVE_ARCH_DMA_SUPPORTED
|
||||
static inline int dma_supported(struct device *dev, u64 mask)
|
||||
{
|
||||
struct dma_map_ops *ops = get_dma_ops(dev);
|
||||
|
||||
if (!ops)
|
||||
return 0;
|
||||
if (!ops->dma_supported)
|
||||
return 1;
|
||||
return ops->dma_supported(dev, mask);
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifndef HAVE_ARCH_DMA_SET_MASK
|
||||
static inline int dma_set_mask(struct device *dev, u64 mask)
|
||||
{
|
||||
struct dma_map_ops *ops = get_dma_ops(dev);
|
||||
|
||||
if (ops->set_dma_mask)
|
||||
return ops->set_dma_mask(dev, mask);
|
||||
|
||||
if (!dev->dma_mask || !dma_supported(dev, mask))
|
||||
return -EIO;
|
||||
*dev->dma_mask = mask;
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif
|
||||
Reference in New Issue
Block a user