diff options
Diffstat (limited to 'drivers/staging/android')
| -rw-r--r-- | drivers/staging/android/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/staging/android/ashmem.c | 44 | ||||
| -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 | ||||
| -rw-r--r-- | drivers/staging/android/lowmemorykiller.c | 30 | ||||
| -rw-r--r-- | drivers/staging/android/sw_sync.c | 17 | ||||
| -rw-r--r-- | drivers/staging/android/timed_output.c | 16 | ||||
| -rw-r--r-- | drivers/staging/android/uapi/ion.h | 25 |
15 files changed, 102 insertions, 126 deletions
diff --git a/drivers/staging/android/Kconfig b/drivers/staging/android/Kconfig index 68307121c9c1..42b15126aa06 100644 --- a/drivers/staging/android/Kconfig +++ b/drivers/staging/android/Kconfig @@ -54,7 +54,7 @@ config SW_SYNC depends on SYNC ---help--- A sync object driver that uses a 32bit counter to coordinate - syncrhronization. Useful when there is no hardware primitive backing + synchronization. Useful when there is no hardware primitive backing the synchronization. config SW_SYNC_USER diff --git a/drivers/staging/android/ashmem.c b/drivers/staging/android/ashmem.c index 60200a3da821..3f2a3d611e4b 100644 --- a/drivers/staging/android/ashmem.c +++ b/drivers/staging/android/ashmem.c @@ -18,7 +18,8 @@ #define pr_fmt(fmt) "ashmem: " fmt -#include <linux/module.h> +#include <linux/init.h> +#include <linux/export.h> #include <linux/file.h> #include <linux/fs.h> #include <linux/falloc.h> @@ -43,7 +44,7 @@ * @unpinned_list: The list of all ashmem areas * @file: The shmem-based backing file * @size: The size of the mapping, in bytes - * @prot_masks: The allowed protection bits, as vm_flags + * @prot_mask: The allowed protection bits, as vm_flags * * The lifecycle of this structure is from our parent file's open() until * its release(). It is also protected by 'ashmem_mutex' @@ -82,14 +83,14 @@ struct ashmem_range { /* LRU list of unpinned pages, protected by ashmem_mutex */ static LIST_HEAD(ashmem_lru_list); -/** +/* * long lru_count - The count of pages on our LRU list. * * This is protected by ashmem_mutex. */ static unsigned long lru_count; -/** +/* * ashmem_mutex - protects the list of and each individual ashmem_area * * Lock Ordering: ashmex_mutex -> i_mutex -> i_alloc_sem @@ -311,10 +312,9 @@ static ssize_t ashmem_read(struct file *file, char __user *buf, * ashmem_release is called. */ ret = __vfs_read(asma->file, buf, len, pos); - if (ret >= 0) { + if (ret >= 0) /** Update backing file pos, since f_ops->read() doesn't */ asma->file->f_pos = *pos; - } return ret; out_unlock: @@ -618,7 +618,8 @@ static int ashmem_pin(struct ashmem_area *asma, size_t pgstart, size_t pgend) /* Case #3: We overlap from the rear, so adjust it */ if (range->pgend <= pgend) { - range_shrink(range, range->pgstart, pgstart-1); + range_shrink(range, range->pgstart, + pgstart - 1); continue; } @@ -715,7 +716,7 @@ static int ashmem_pin_unpin(struct ashmem_area *asma, unsigned long cmd, if (unlikely((pin.offset | pin.len) & ~PAGE_MASK)) return -EINVAL; - if (unlikely(((__u32) -1) - pin.offset < pin.len)) + if (unlikely(((__u32)-1) - pin.offset < pin.len)) return -EINVAL; if (unlikely(PAGE_ALIGN(asma->size) < pin.offset + pin.len)) @@ -759,7 +760,7 @@ static long ashmem_ioctl(struct file *file, unsigned int cmd, unsigned long arg) ret = -EINVAL; if (!asma->file) { ret = 0; - asma->size = (size_t) arg; + asma->size = (size_t)arg; } break; case ASHMEM_GET_SIZE: @@ -833,16 +834,16 @@ static int __init ashmem_init(void) int ret; ashmem_area_cachep = kmem_cache_create("ashmem_area_cache", - sizeof(struct ashmem_area), - 0, 0, NULL); + sizeof(struct ashmem_area), + 0, 0, NULL); if (unlikely(!ashmem_area_cachep)) { pr_err("failed to create slab cache\n"); return -ENOMEM; } ashmem_range_cachep = kmem_cache_create("ashmem_range_cache", - sizeof(struct ashmem_range), - 0, 0, NULL); + sizeof(struct ashmem_range), + 0, 0, NULL); if (unlikely(!ashmem_range_cachep)) { pr_err("failed to create slab cache\n"); return -ENOMEM; @@ -860,19 +861,4 @@ static int __init ashmem_init(void) return 0; } - -static void __exit ashmem_exit(void) -{ - unregister_shrinker(&ashmem_shrinker); - - misc_deregister(&ashmem_misc); - kmem_cache_destroy(ashmem_range_cachep); - kmem_cache_destroy(ashmem_area_cachep); - - pr_info("unloaded\n"); -} - -module_init(ashmem_init); -module_exit(ashmem_exit); - -MODULE_LICENSE("GPL"); +device_initcall(ashmem_init); 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 diff --git a/drivers/staging/android/lowmemorykiller.c b/drivers/staging/android/lowmemorykiller.c index 872bd603fd0d..e679d8432810 100644 --- a/drivers/staging/android/lowmemorykiller.c +++ b/drivers/staging/android/lowmemorykiller.c @@ -32,7 +32,8 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#include <linux/module.h> +#include <linux/init.h> +#include <linux/moduleparam.h> #include <linux/kernel.h> #include <linux/mm.h> #include <linux/oom.h> @@ -157,26 +158,22 @@ static unsigned long lowmem_scan(struct shrinker *s, struct shrink_control *sc) } if (selected) { task_lock(selected); - if (!selected->mm) { - /* Already exited, cannot do mark_tsk_oom_victim() */ - task_unlock(selected); - goto out; - } + send_sig(SIGKILL, selected, 0); /* * FIXME: lowmemorykiller shouldn't abuse global OOM killer * infrastructure. There is no real reason why the selected * task should have access to the memory reserves. */ - mark_oom_victim(selected); + if (selected->mm) + mark_oom_victim(selected); task_unlock(selected); lowmem_print(1, "send sigkill to %d (%s), adj %hd, size %d\n", selected->pid, selected->comm, selected_oom_score_adj, selected_tasksize); lowmem_deathpending_timeout = jiffies + HZ; - send_sig(SIGKILL, selected, 0); rem += selected_tasksize; } -out: + lowmem_print(4, "lowmem_scan %lu, %x, return %lu\n", sc->nr_to_scan, sc->gfp_mask, rem); rcu_read_unlock(); @@ -194,12 +191,12 @@ static int __init lowmem_init(void) register_shrinker(&lowmem_shrinker); return 0; } +device_initcall(lowmem_init); -static void __exit lowmem_exit(void) -{ - unregister_shrinker(&lowmem_shrinker); -} - +/* + * not really modular, but the easiest way to keep compat with existing + * bootargs behaviour is to continue using module_param here. + */ module_param_named(cost, lowmem_shrinker.seeks, int, S_IRUGO | S_IWUSR); module_param_array_named(adj, lowmem_adj, short, &lowmem_adj_size, S_IRUGO | S_IWUSR); @@ -207,8 +204,3 @@ module_param_array_named(minfree, lowmem_minfree, uint, &lowmem_minfree_size, S_IRUGO | S_IWUSR); module_param_named(debug_level, lowmem_debug_level, uint, S_IRUGO | S_IWUSR); -module_init(lowmem_init); -module_exit(lowmem_exit); - -MODULE_LICENSE("GPL"); - diff --git a/drivers/staging/android/sw_sync.c b/drivers/staging/android/sw_sync.c index c90838d36953..c4ff1679ebbc 100644 --- a/drivers/staging/android/sw_sync.c +++ b/drivers/staging/android/sw_sync.c @@ -15,11 +15,11 @@ */ #include <linux/kernel.h> +#include <linux/init.h> #include <linux/export.h> #include <linux/file.h> #include <linux/fs.h> #include <linux/miscdevice.h> -#include <linux/module.h> #include <linux/syscalls.h> #include <linux/uaccess.h> @@ -145,7 +145,7 @@ static int sw_sync_open(struct inode *inode, struct file *file) get_task_comm(task_comm, current); obj = sw_sync_timeline_create(task_comm); - if (obj == NULL) + if (!obj) return -ENOMEM; file->private_data = obj; @@ -179,14 +179,14 @@ static long sw_sync_ioctl_create_fence(struct sw_sync_timeline *obj, } pt = sw_sync_pt_create(obj, data.value); - if (pt == NULL) { + if (!pt) { err = -ENOMEM; goto err; } data.name[sizeof(data.name) - 1] = '\0'; fence = sync_fence_create(data.name, pt); - if (fence == NULL) { + if (!fence) { sync_pt_free(pt); err = -ENOMEM; goto err; @@ -255,13 +255,6 @@ static int __init sw_sync_device_init(void) { return misc_register(&sw_sync_dev); } - -static void __exit sw_sync_device_remove(void) -{ - misc_deregister(&sw_sync_dev); -} - -module_init(sw_sync_device_init); -module_exit(sw_sync_device_remove); +device_initcall(sw_sync_device_init); #endif /* CONFIG_SW_SYNC_USER */ diff --git a/drivers/staging/android/timed_output.c b/drivers/staging/android/timed_output.c index b41429f379fe..aff9cdb007e5 100644 --- a/drivers/staging/android/timed_output.c +++ b/drivers/staging/android/timed_output.c @@ -16,7 +16,8 @@ #define pr_fmt(fmt) "timed_output: " fmt -#include <linux/module.h> +#include <linux/init.h> +#include <linux/export.h> #include <linux/types.h> #include <linux/device.h> #include <linux/fs.h> @@ -106,15 +107,4 @@ static int __init timed_output_init(void) { return create_timed_output_class(); } - -static void __exit timed_output_exit(void) -{ - class_destroy(timed_output_class); -} - -module_init(timed_output_init); -module_exit(timed_output_exit); - -MODULE_AUTHOR("Mike Lockwood <lockwood@android.com>"); -MODULE_DESCRIPTION("timed output class driver"); -MODULE_LICENSE("GPL"); +device_initcall(timed_output_init); diff --git a/drivers/staging/android/uapi/ion.h b/drivers/staging/android/uapi/ion.h index 68a14b4e21cb..0a8e40f92cd7 100644 --- a/drivers/staging/android/uapi/ion.h +++ b/drivers/staging/android/uapi/ion.h @@ -40,8 +40,10 @@ enum ion_heap_type { ION_HEAP_TYPE_CARVEOUT, ION_HEAP_TYPE_CHUNK, ION_HEAP_TYPE_DMA, - ION_HEAP_TYPE_CUSTOM, /* must be last so device specific heaps always - are at the end of this enum */ + ION_HEAP_TYPE_CUSTOM, /* + * must be last so device specific heaps always + * are at the end of this enum + */ ION_NUM_HEAPS = 16, }; @@ -56,13 +58,18 @@ enum ion_heap_type { * allocation flags - the lower 16 bits are used by core ion, the upper 16 * bits are reserved for use by the heaps themselves. */ -#define ION_FLAG_CACHED 1 /* mappings of this buffer should be - cached, ion will do cache - maintenance when the buffer is - mapped for dma */ -#define ION_FLAG_CACHED_NEEDS_SYNC 2 /* mappings of this buffer will created - at mmap time, if this is set - caches must be managed manually */ +#define ION_FLAG_CACHED 1 /* + * mappings of this buffer should be + * cached, ion will do cache + * maintenance when the buffer is + * mapped for dma + */ +#define ION_FLAG_CACHED_NEEDS_SYNC 2 /* + * mappings of this buffer will created + * at mmap time, if this is set + * caches must be managed + * manually + */ /** * DOC: Ion Userspace API |