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*参照元 [#d4d921dd] #backlinks *説明 [#kbd8e0ff] -パス: [[linux-4.4.1/drivers/staging/android/ion/ion_priv.h]] -FIXME: これは何？ --説明 **参考 [#a437773a] 実装の一覧。 -実装の一覧。 --[[linux-4.4.1/carveout_heap_ops(global)]] : drivers/staging/android/ion/ion_carveout_heap.c --[[linux-4.4.1/chunk_heap_ops(global)]] : drivers/staging/android/ion/ion_chunk_heap.c --[[linux-4.4.1/ion_cma_ops(global)]] : drivers/staging/android/ion/ion_cma_heap.c --[[linux-4.4.1/system_heap_ops(global)]] : drivers/staging/android/ion/ion_system_heap.c --[[linux-4.4.1/kmalloc_ops(global)]] : drivers/staging/android/ion/ion_system_heap.c static struct ion_heap_ops carveout_heap_ops = { static struct ion_heap_ops chunk_heap_ops = { static struct ion_heap_ops ion_cma_ops = { static struct ion_heap_ops system_heap_ops = { static struct ion_heap_ops kmalloc_ops = { -[[linux-4.4.1/carveout_heap_ops(global)]] : drivers/staging/android/ion/ion_carveout_heap.c -[[linux-4.4.1/chunk_heap_ops(global)]] : drivers/staging/android/ion/ion_chunk_heap.c -[[linux-4.4.1/ion_cma_ops(global)]] : drivers/staging/android/ion/ion_cma_heap.c -[[linux-4.4.1/system_heap_ops(global)]] : drivers/staging/android/ion/ion_system_heap.c -[[linux-4.4.1/kmalloc_ops(global)]] : drivers/staging/android/ion/ion_system_heap.c *実装 [#u4edeeaa] /** * struct ion_heap_ops - ops to operate on a given heap * @allocate: allocate memory * @free: free memory * @phys get physical address of a buffer (only define on * physically contiguous heaps) * @map_dma map the memory for dma to a scatterlist * @unmap_dma unmap the memory for dma * @map_kernel map memory to the kernel * @unmap_kernel unmap memory to the kernel * @map_user map memory to userspace * * allocate, phys, and map_user return 0 on success, -errno on error. * map_dma and map_kernel return pointer on success, ERR_PTR on * error. @free will be called with ION_PRIV_FLAG_SHRINKER_FREE set in * the buffer's private_flags when called from a shrinker. In that * case, the pages being free'd must be truly free'd back to the * system, not put in a page pool or otherwise cached. */ struct ion_heap_ops { int (*allocate)(struct ion_heap *heap, struct ion_buffer *buffer, unsigned long len, unsigned long align, unsigned long flags); void (*free)(struct ion_buffer *buffer); - --[[linux-4.4.1/ion_heap]] --[[linux-4.4.1/ion_buffer]] int (*phys)(struct ion_heap *heap, struct ion_buffer *buffer, ion_phys_addr_t *addr, size_t *len); - --[[linux-4.4.1/ion_phys_addr_t]] struct sg_table * (*map_dma)(struct ion_heap *heap, struct ion_buffer *buffer); void (*unmap_dma)(struct ion_heap *heap, struct ion_buffer *buffer); void * (*map_kernel)(struct ion_heap *heap, struct ion_buffer *buffer); void (*unmap_kernel)(struct ion_heap *heap, struct ion_buffer *buffer); int (*map_user)(struct ion_heap *mapper, struct ion_buffer *buffer, struct vm_area_struct *vma); - --[[linux-4.4.1/vm_area_struct]] int (*shrink)(struct ion_heap *heap, gfp_t gfp_mask, int nr_to_scan); - --[[linux-4.4.1/gfp_t]] }; *コメント [#f7629d26]
