diff options
Diffstat (limited to 'drivers/staging/android/ion')
| -rw-r--r-- | drivers/staging/android/ion/compat_ion.h | 1 | ||||
| -rw-r--r-- | drivers/staging/android/ion/ion.c | 49 | ||||
| -rw-r--r-- | drivers/staging/android/ion/ion.h | 10 | ||||
| -rw-r--r-- | drivers/staging/android/ion/ion_cma_heap.c | 6 | ||||
| -rw-r--r-- | drivers/staging/android/ion/ion_heap.c | 4 | ||||
| -rw-r--r-- | drivers/staging/android/ion/ion_page_pool.c | 10 | ||||
| -rw-r--r-- | drivers/staging/android/ion/ion_priv.h | 3 | ||||
| -rw-r--r-- | drivers/staging/android/ion/ion_system_heap.c | 9 | ||||
| -rw-r--r-- | drivers/staging/android/ion/tegra/Makefile | 2 |
9 files changed, 51 insertions, 43 deletions
diff --git a/drivers/staging/android/ion/compat_ion.h b/drivers/staging/android/ion/compat_ion.h index c2ad5893dfda..9da8f917670b 100644 --- a/drivers/staging/android/ion/compat_ion.h +++ b/drivers/staging/android/ion/compat_ion.h @@ -1,5 +1,4 @@ /* - * drivers/staging/android/ion/compat_ion.h * * Copyright (C) 2013 Google, Inc. diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c index 6e8d8392ca38..e237e9f3312d 100644 --- a/drivers/staging/android/ion/ion.c +++ b/drivers/staging/android/ion/ion.c @@ -1,5 +1,5 @@ /* - + * * drivers/staging/android/ion/ion.c * * Copyright (C) 2011 Google, Inc. @@ -213,10 +213,10 @@ static struct ion_buffer *ion_buffer_create(struct ion_heap *heap, "heap->ops->map_dma should return ERR_PTR on error")) table = ERR_PTR(-EINVAL); if (IS_ERR(table)) { - heap->ops->free(buffer); - kfree(buffer); - return ERR_CAST(table); + ret = -EINVAL; + goto err1; } + buffer->sg_table = table; if (ion_buffer_fault_user_mappings(buffer)) { int num_pages = PAGE_ALIGN(buffer->size) / PAGE_SIZE; @@ -226,7 +226,7 @@ static struct ion_buffer *ion_buffer_create(struct ion_heap *heap, buffer->pages = vmalloc(sizeof(struct page *) * num_pages); if (!buffer->pages) { ret = -ENOMEM; - goto err1; + goto err; } for_each_sg(table->sgl, sg, table->nents, i) { @@ -235,23 +235,22 @@ static struct ion_buffer *ion_buffer_create(struct ion_heap *heap, for (j = 0; j < sg->length / PAGE_SIZE; j++) buffer->pages[k++] = page++; } - - if (ret) - goto err; } buffer->dev = dev; buffer->size = len; INIT_LIST_HEAD(&buffer->vmas); mutex_init(&buffer->lock); - /* this will set up dma addresses for the sglist -- it is not - technically correct as per the dma api -- a specific - device isn't really taking ownership here. However, in practice on - our systems the only dma_address space is physical addresses. - Additionally, we can't afford the overhead of invalidating every - allocation via dma_map_sg. The implicit contract here is that - memory coming from the heaps is ready for dma, ie if it has a - cached mapping that mapping has been invalidated */ + /* + * this will set up dma addresses for the sglist -- it is not + * technically correct as per the dma api -- a specific + * device isn't really taking ownership here. However, in practice on + * our systems the only dma_address space is physical addresses. + * Additionally, we can't afford the overhead of invalidating every + * allocation via dma_map_sg. The implicit contract here is that + * memory coming from the heaps is ready for dma, ie if it has a + * cached mapping that mapping has been invalidated + */ for_each_sg(buffer->sg_table->sgl, sg, buffer->sg_table->nents, i) sg_dma_address(sg) = sg_phys(sg); mutex_lock(&dev->buffer_lock); @@ -261,9 +260,8 @@ static struct ion_buffer *ion_buffer_create(struct ion_heap *heap, err: heap->ops->unmap_dma(heap, buffer); - heap->ops->free(buffer); err1: - vfree(buffer->pages); + heap->ops->free(buffer); err2: kfree(buffer); return ERR_PTR(ret); @@ -753,8 +751,10 @@ struct ion_client *ion_client_create(struct ion_device *dev, get_task_struct(current->group_leader); task_lock(current->group_leader); pid = task_pid_nr(current->group_leader); - /* don't bother to store task struct for kernel threads, - they can't be killed anyway */ + /* + * don't bother to store task struct for kernel threads, + * they can't be killed anyway + */ if (current->group_leader->flags & PF_KTHREAD) { put_task_struct(current->group_leader); task = NULL; @@ -1521,8 +1521,10 @@ void ion_device_add_heap(struct ion_device *dev, struct ion_heap *heap) heap->dev = dev; down_write(&dev->lock); - /* use negative heap->id to reverse the priority -- when traversing - the list later attempt higher id numbers first */ + /* + * use negative heap->id to reverse the priority -- when traversing + * the list later attempt higher id numbers first + */ plist_node_init(&heap->node, -heap->id); plist_add(&heap->node, &dev->heaps); debug_file = debugfs_create_file(heap->name, 0664, @@ -1555,6 +1557,7 @@ void ion_device_add_heap(struct ion_device *dev, struct ion_heap *heap) up_write(&dev->lock); } +EXPORT_SYMBOL(ion_device_add_heap); struct ion_device *ion_device_create(long (*custom_ioctl) (struct ion_client *client, @@ -1604,6 +1607,7 @@ debugfs_done: idev->clients = RB_ROOT; return idev; } +EXPORT_SYMBOL(ion_device_create); void ion_device_destroy(struct ion_device *dev) { @@ -1612,6 +1616,7 @@ void ion_device_destroy(struct ion_device *dev) /* XXX need to free the heaps and clients ? */ kfree(dev); } +EXPORT_SYMBOL(ion_device_destroy); void __init ion_reserve(struct ion_platform_data *data) { diff --git a/drivers/staging/android/ion/ion.h b/drivers/staging/android/ion/ion.h index 443db8459a9e..b860c5f579f5 100644 --- a/drivers/staging/android/ion/ion.h +++ b/drivers/staging/android/ion/ion.h @@ -28,10 +28,12 @@ struct ion_mapper; struct ion_client; struct ion_buffer; -/* This should be removed some day when phys_addr_t's are fully - plumbed in the kernel, and all instances of ion_phys_addr_t should - be converted to phys_addr_t. For the time being many kernel interfaces - do not accept phys_addr_t's that would have to */ +/* + * This should be removed some day when phys_addr_t's are fully + * plumbed in the kernel, and all instances of ion_phys_addr_t should + * be converted to phys_addr_t. For the time being many kernel interfaces + * do not accept phys_addr_t's that would have to + */ #define ion_phys_addr_t unsigned long /** diff --git a/drivers/staging/android/ion/ion_cma_heap.c b/drivers/staging/android/ion/ion_cma_heap.c index 0b2448c32495..a3446da4fdc2 100644 --- a/drivers/staging/android/ion/ion_cma_heap.c +++ b/drivers/staging/android/ion/ion_cma_heap.c @@ -180,8 +180,10 @@ struct ion_heap *ion_cma_heap_create(struct ion_platform_heap *data) return ERR_PTR(-ENOMEM); cma_heap->heap.ops = &ion_cma_ops; - /* get device from private heaps data, later it will be - * used to make the link with reserved CMA memory */ + /* + * get device from private heaps data, later it will be + * used to make the link with reserved CMA memory + */ cma_heap->dev = data->priv; cma_heap->heap.type = ION_HEAP_TYPE_DMA; return &cma_heap->heap; diff --git a/drivers/staging/android/ion/ion_heap.c b/drivers/staging/android/ion/ion_heap.c index fd13d05b538a..ca15a87f6fd3 100644 --- a/drivers/staging/android/ion/ion_heap.c +++ b/drivers/staging/android/ion/ion_heap.c @@ -56,7 +56,7 @@ void *ion_heap_map_kernel(struct ion_heap *heap, vaddr = vmap(pages, npages, VM_MAP, pgprot); vfree(pages); - if (vaddr == NULL) + if (!vaddr) return ERR_PTR(-ENOMEM); return vaddr; @@ -352,6 +352,7 @@ struct ion_heap *ion_heap_create(struct ion_platform_heap *heap_data) heap->id = heap_data->id; return heap; } +EXPORT_SYMBOL(ion_heap_create); void ion_heap_destroy(struct ion_heap *heap) { @@ -379,3 +380,4 @@ void ion_heap_destroy(struct ion_heap *heap) heap->type); } } +EXPORT_SYMBOL(ion_heap_destroy); diff --git a/drivers/staging/android/ion/ion_page_pool.c b/drivers/staging/android/ion/ion_page_pool.c index 19ad3aba499a..fd7e23e0c06e 100644 --- a/drivers/staging/android/ion/ion_page_pool.c +++ b/drivers/staging/android/ion/ion_page_pool.c @@ -19,7 +19,7 @@ #include <linux/err.h> #include <linux/fs.h> #include <linux/list.h> -#include <linux/module.h> +#include <linux/init.h> #include <linux/slab.h> #include <linux/swap.h> #include "ion_priv.h" @@ -174,10 +174,4 @@ static int __init ion_page_pool_init(void) { return 0; } - -static void __exit ion_page_pool_exit(void) -{ -} - -module_init(ion_page_pool_init); -module_exit(ion_page_pool_exit); +device_initcall(ion_page_pool_init); diff --git a/drivers/staging/android/ion/ion_priv.h b/drivers/staging/android/ion/ion_priv.h index 52f1cd1a67ed..0239883bffb7 100644 --- a/drivers/staging/android/ion/ion_priv.h +++ b/drivers/staging/android/ion/ion_priv.h @@ -346,7 +346,8 @@ void ion_carveout_free(struct ion_heap *heap, ion_phys_addr_t addr, * to keep a pool of pre allocated memory to use from your heap. Keeping * a pool of memory that is ready for dma, ie any cached mapping have been * invalidated from the cache, provides a significant performance benefit on - * many systems */ + * many systems + */ /** * struct ion_page_pool - pagepool struct diff --git a/drivers/staging/android/ion/ion_system_heap.c b/drivers/staging/android/ion/ion_system_heap.c index 7a7a9a047230..d4c3e5512dd5 100644 --- a/drivers/staging/android/ion/ion_system_heap.c +++ b/drivers/staging/android/ion/ion_system_heap.c @@ -27,7 +27,7 @@ #include "ion_priv.h" static gfp_t high_order_gfp_flags = (GFP_HIGHUSER | __GFP_ZERO | __GFP_NOWARN | - __GFP_NORETRY) & ~__GFP_WAIT; + __GFP_NORETRY) & ~__GFP_DIRECT_RECLAIM; static gfp_t low_order_gfp_flags = (GFP_HIGHUSER | __GFP_ZERO | __GFP_NOWARN); static const unsigned int orders[] = {8, 4, 0}; static const int num_orders = ARRAY_SIZE(orders); @@ -185,8 +185,11 @@ static void ion_system_heap_free(struct ion_buffer *buffer) struct scatterlist *sg; int i; - /* uncached pages come from the page pools, zero them before returning - for security purposes (other allocations are zerod at alloc time */ + /* + * uncached pages come from the page pools, zero them before returning + * for security purposes (other allocations are zerod at + * alloc time + */ if (!cached && !(buffer->private_flags & ION_PRIV_FLAG_SHRINKER_FREE)) ion_heap_buffer_zero(buffer); diff --git a/drivers/staging/android/ion/tegra/Makefile b/drivers/staging/android/ion/tegra/Makefile index 11cd003fb08f..808f1f53f11a 100644 --- a/drivers/staging/android/ion/tegra/Makefile +++ b/drivers/staging/android/ion/tegra/Makefile @@ -1 +1 @@ -obj-y += tegra_ion.o +obj-$(CONFIG_ION_TEGRA) += tegra_ion.o |