diff options
author | Jiri Kosina <jkosina@suse.cz> | 2010-08-04 15:14:38 +0200 |
---|---|---|
committer | Jiri Kosina <jkosina@suse.cz> | 2010-08-04 15:14:38 +0200 |
commit | d790d4d583aeaed9fc6f8a9f4d9f8ce6b1c15c7f (patch) | |
tree | 854ab394486288d40fa8179cbfaf66e8bdc44b0f /drivers/gpu/drm/ttm/ttm_page_alloc.c | |
parent | 73b2c7165b76b20eb1290e7efebc33cfd21db1ca (diff) | |
parent | 3a09b1be53d23df780a0cd0e4087a05e2ca4a00c (diff) | |
download | op-kernel-dev-d790d4d583aeaed9fc6f8a9f4d9f8ce6b1c15c7f.zip op-kernel-dev-d790d4d583aeaed9fc6f8a9f4d9f8ce6b1c15c7f.tar.gz |
Merge branch 'master' into for-next
Diffstat (limited to 'drivers/gpu/drm/ttm/ttm_page_alloc.c')
-rw-r--r-- | drivers/gpu/drm/ttm/ttm_page_alloc.c | 76 |
1 files changed, 38 insertions, 38 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c b/drivers/gpu/drm/ttm/ttm_page_alloc.c index ef91069..ca90479 100644 --- a/drivers/gpu/drm/ttm/ttm_page_alloc.c +++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c @@ -40,11 +40,13 @@ #include <linux/slab.h> #include <asm/atomic.h> -#include <asm/agp.h> #include "ttm/ttm_bo_driver.h" #include "ttm/ttm_page_alloc.h" +#ifdef TTM_HAS_AGP +#include <asm/agp.h> +#endif #define NUM_PAGES_TO_ALLOC (PAGE_SIZE/sizeof(struct page *)) #define SMALL_ALLOCATION 16 @@ -104,7 +106,6 @@ struct ttm_pool_opts { struct ttm_pool_manager { struct kobject kobj; struct shrinker mm_shrink; - atomic_t page_alloc_inited; struct ttm_pool_opts options; union { @@ -142,7 +143,7 @@ static void ttm_pool_kobj_release(struct kobject *kobj) { struct ttm_pool_manager *m = container_of(kobj, struct ttm_pool_manager, kobj); - (void)m; + kfree(m); } static ssize_t ttm_pool_store(struct kobject *kobj, @@ -214,9 +215,7 @@ static struct kobj_type ttm_pool_kobj_type = { .default_attrs = ttm_pool_attrs, }; -static struct ttm_pool_manager _manager = { - .page_alloc_inited = ATOMIC_INIT(0) -}; +static struct ttm_pool_manager *_manager; #ifndef CONFIG_X86 static int set_pages_array_wb(struct page **pages, int addrinarray) @@ -271,7 +270,7 @@ static struct ttm_page_pool *ttm_get_pool(int flags, if (flags & TTM_PAGE_FLAG_DMA32) pool_index |= 0x2; - return &_manager.pools[pool_index]; + return &_manager->pools[pool_index]; } /* set memory back to wb and free the pages. */ @@ -387,7 +386,7 @@ static int ttm_pool_get_num_unused_pages(void) unsigned i; int total = 0; for (i = 0; i < NUM_POOLS; ++i) - total += _manager.pools[i].npages; + total += _manager->pools[i].npages; return total; } @@ -395,7 +394,7 @@ static int ttm_pool_get_num_unused_pages(void) /** * Callback for mm to request pool to reduce number of page held. */ -static int ttm_pool_mm_shrink(int shrink_pages, gfp_t gfp_mask) +static int ttm_pool_mm_shrink(struct shrinker *shrink, int shrink_pages, gfp_t gfp_mask) { static atomic_t start_pool = ATOMIC_INIT(0); unsigned i; @@ -408,7 +407,7 @@ static int ttm_pool_mm_shrink(int shrink_pages, gfp_t gfp_mask) unsigned nr_free = shrink_pages; if (shrink_pages == 0) break; - pool = &_manager.pools[(i + pool_offset)%NUM_POOLS]; + pool = &_manager->pools[(i + pool_offset)%NUM_POOLS]; shrink_pages = ttm_page_pool_free(pool, nr_free); } /* return estimated number of unused pages in pool */ @@ -576,10 +575,10 @@ static void ttm_page_pool_fill_locked(struct ttm_page_pool *pool, /* If allocation request is small and there is not enough * pages in pool we fill the pool first */ - if (count < _manager.options.small + if (count < _manager->options.small && count > pool->npages) { struct list_head new_pages; - unsigned alloc_size = _manager.options.alloc_size; + unsigned alloc_size = _manager->options.alloc_size; /** * Can't change page caching if in irqsave context. We have to @@ -667,7 +666,7 @@ int ttm_get_pages(struct list_head *pages, int flags, { struct ttm_page_pool *pool = ttm_get_pool(flags, cstate); struct page *p = NULL; - int gfp_flags = 0; + int gfp_flags = GFP_USER; int r; /* set zero flag for page allocation if required */ @@ -759,8 +758,8 @@ void ttm_put_pages(struct list_head *pages, unsigned page_count, int flags, pool->npages += page_count; /* Check that we don't go over the pool limit */ page_count = 0; - if (pool->npages > _manager.options.max_size) { - page_count = pool->npages - _manager.options.max_size; + if (pool->npages > _manager->options.max_size) { + page_count = pool->npages - _manager->options.max_size; /* free at least NUM_PAGES_TO_ALLOC number of pages * to reduce calls to set_memory_wb */ if (page_count < NUM_PAGES_TO_ALLOC) @@ -785,33 +784,36 @@ static void ttm_page_pool_init_locked(struct ttm_page_pool *pool, int flags, int ttm_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages) { int ret; - if (atomic_add_return(1, &_manager.page_alloc_inited) > 1) - return 0; + + WARN_ON(_manager); printk(KERN_INFO TTM_PFX "Initializing pool allocator.\n"); - ttm_page_pool_init_locked(&_manager.wc_pool, GFP_HIGHUSER, "wc"); + _manager = kzalloc(sizeof(*_manager), GFP_KERNEL); + + ttm_page_pool_init_locked(&_manager->wc_pool, GFP_HIGHUSER, "wc"); - ttm_page_pool_init_locked(&_manager.uc_pool, GFP_HIGHUSER, "uc"); + ttm_page_pool_init_locked(&_manager->uc_pool, GFP_HIGHUSER, "uc"); - ttm_page_pool_init_locked(&_manager.wc_pool_dma32, GFP_USER | GFP_DMA32, - "wc dma"); + ttm_page_pool_init_locked(&_manager->wc_pool_dma32, + GFP_USER | GFP_DMA32, "wc dma"); - ttm_page_pool_init_locked(&_manager.uc_pool_dma32, GFP_USER | GFP_DMA32, - "uc dma"); + ttm_page_pool_init_locked(&_manager->uc_pool_dma32, + GFP_USER | GFP_DMA32, "uc dma"); - _manager.options.max_size = max_pages; - _manager.options.small = SMALL_ALLOCATION; - _manager.options.alloc_size = NUM_PAGES_TO_ALLOC; + _manager->options.max_size = max_pages; + _manager->options.small = SMALL_ALLOCATION; + _manager->options.alloc_size = NUM_PAGES_TO_ALLOC; - kobject_init(&_manager.kobj, &ttm_pool_kobj_type); - ret = kobject_add(&_manager.kobj, &glob->kobj, "pool"); + ret = kobject_init_and_add(&_manager->kobj, &ttm_pool_kobj_type, + &glob->kobj, "pool"); if (unlikely(ret != 0)) { - kobject_put(&_manager.kobj); + kobject_put(&_manager->kobj); + _manager = NULL; return ret; } - ttm_pool_mm_shrink_init(&_manager); + ttm_pool_mm_shrink_init(_manager); return 0; } @@ -820,16 +822,14 @@ void ttm_page_alloc_fini() { int i; - if (atomic_sub_return(1, &_manager.page_alloc_inited) > 0) - return; - printk(KERN_INFO TTM_PFX "Finalizing pool allocator.\n"); - ttm_pool_mm_shrink_fini(&_manager); + ttm_pool_mm_shrink_fini(_manager); for (i = 0; i < NUM_POOLS; ++i) - ttm_page_pool_free(&_manager.pools[i], FREE_ALL_PAGES); + ttm_page_pool_free(&_manager->pools[i], FREE_ALL_PAGES); - kobject_put(&_manager.kobj); + kobject_put(&_manager->kobj); + _manager = NULL; } int ttm_page_alloc_debugfs(struct seq_file *m, void *data) @@ -837,14 +837,14 @@ int ttm_page_alloc_debugfs(struct seq_file *m, void *data) struct ttm_page_pool *p; unsigned i; char *h[] = {"pool", "refills", "pages freed", "size"}; - if (atomic_read(&_manager.page_alloc_inited) == 0) { + if (!_manager) { seq_printf(m, "No pool allocator running.\n"); return 0; } seq_printf(m, "%6s %12s %13s %8s\n", h[0], h[1], h[2], h[3]); for (i = 0; i < NUM_POOLS; ++i) { - p = &_manager.pools[i]; + p = &_manager->pools[i]; seq_printf(m, "%6s %12ld %13ld %8d\n", p->name, p->nrefills, |