X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=sound%2Fcore%2Fmemalloc.c;h=bc0bd0910a6264a2fae71b74f50f672d98b7b9c7;hb=71bc7bf045262e82c645cad48fd56dd17e75344e;hp=e4b8959dd4bba4ff75f2617bdc76b843ff51b41c;hpb=be37bdbce7ceaacf4f20c6cc759efbe75ebd1196;p=linux-2.6-omap-h63xx.git diff --git a/sound/core/memalloc.c b/sound/core/memalloc.c index e4b8959dd4b..bc0bd0910a6 100644 --- a/sound/core/memalloc.c +++ b/sound/core/memalloc.c @@ -21,7 +21,6 @@ * */ -#include #include #include #include @@ -31,7 +30,7 @@ #include #include #include -#include +#include #include #ifdef CONFIG_SBUS #include @@ -43,10 +42,6 @@ MODULE_DESCRIPTION("Memory allocator for ALSA system."); MODULE_LICENSE("GPL"); -#ifndef SNDRV_CARDS -#define SNDRV_CARDS 8 -#endif - /* */ @@ -58,7 +53,7 @@ int snd_free_sgbuf_pages(struct snd_dma_buffer *dmab); /* */ -static DECLARE_MUTEX(list_mutex); +static DEFINE_MUTEX(list_mutex); static LIST_HEAD(mem_list_head); /* buffer preservation list */ @@ -87,7 +82,7 @@ struct snd_mem_list { * Hacks */ -#if defined(__i386__) || defined(__ppc__) || defined(__x86_64__) +#if defined(__i386__) /* * A hack to allocate large buffers via dma_alloc_coherent() * @@ -145,10 +140,6 @@ static void *snd_dma_hack_alloc_coherent(struct device *dev, size_t size, #endif /* arch */ -#if ! defined(__arm__) -#define NEED_RESERVE_PAGES -#endif - /* * * Generic memory allocators @@ -167,20 +158,6 @@ static inline void dec_snd_pages(int order) snd_allocated_pages -= 1 << order; } -static void mark_pages(struct page *page, int order) -{ - struct page *last_page = page + (1 << order); - while (page < last_page) - SetPageReserved(page++); -} - -static void unmark_pages(struct page *page, int order) -{ - struct page *last_page = page + (1 << order); - while (page < last_page) - ClearPageReserved(page++); -} - /** * snd_malloc_pages - allocate pages with the given size * @size: the size to allocate in bytes @@ -199,10 +176,8 @@ void *snd_malloc_pages(size_t size, gfp_t gfp_flags) snd_assert(gfp_flags != 0, return NULL); gfp_flags |= __GFP_COMP; /* compound page lets parts be mapped */ pg = get_order(size); - if ((res = (void *) __get_free_pages(gfp_flags, pg)) != NULL) { - mark_pages(virt_to_page(res), pg); + if ((res = (void *) __get_free_pages(gfp_flags, pg)) != NULL) inc_snd_pages(pg); - } return res; } @@ -221,7 +196,6 @@ void snd_free_pages(void *ptr, size_t size) return; pg = get_order(size); dec_snd_pages(pg); - unmark_pages(virt_to_page(ptr), pg); free_pages((unsigned long) ptr, pg); } @@ -246,12 +220,8 @@ static void *snd_malloc_dev_pages(struct device *dev, size_t size, dma_addr_t *d | __GFP_NORETRY /* don't trigger OOM-killer */ | __GFP_NOWARN; /* no stack trace print - this call is non-critical */ res = dma_alloc_coherent(dev, PAGE_SIZE << pg, dma, gfp_flags); - if (res != NULL) { -#ifdef NEED_RESERVE_PAGES - mark_pages(virt_to_page(res), pg); /* should be dma_to_page() */ -#endif + if (res != NULL) inc_snd_pages(pg); - } return res; } @@ -266,9 +236,6 @@ static void snd_free_dev_pages(struct device *dev, size_t size, void *ptr, return; pg = get_order(size); dec_snd_pages(pg); -#ifdef NEED_RESERVE_PAGES - unmark_pages(virt_to_page(ptr), pg); /* should be dma_to_page() */ -#endif dma_free_coherent(dev, PAGE_SIZE << pg, ptr, dma); } @@ -444,7 +411,7 @@ size_t snd_dma_get_reserved_buf(struct snd_dma_buffer *dmab, unsigned int id) snd_assert(dmab, return 0); - down(&list_mutex); + mutex_lock(&list_mutex); list_for_each(p, &mem_list_head) { mem = list_entry(p, struct snd_mem_list, list); if (mem->id == id && @@ -456,11 +423,11 @@ size_t snd_dma_get_reserved_buf(struct snd_dma_buffer *dmab, unsigned int id) if (dmab->dev.dev == NULL) dmab->dev.dev = dev; kfree(mem); - up(&list_mutex); + mutex_unlock(&list_mutex); return dmab->bytes; } } - up(&list_mutex); + mutex_unlock(&list_mutex); return 0; } @@ -481,11 +448,11 @@ int snd_dma_reserve_buf(struct snd_dma_buffer *dmab, unsigned int id) mem = kmalloc(sizeof(*mem), GFP_KERNEL); if (! mem) return -ENOMEM; - down(&list_mutex); + mutex_lock(&list_mutex); mem->buffer = *dmab; mem->id = id; list_add_tail(&mem->list, &mem_list_head); - up(&list_mutex); + mutex_unlock(&list_mutex); return 0; } @@ -497,7 +464,7 @@ static void free_all_reserved_pages(void) struct list_head *p; struct snd_mem_list *mem; - down(&list_mutex); + mutex_lock(&list_mutex); while (! list_empty(&mem_list_head)) { p = mem_list_head.next; mem = list_entry(p, struct snd_mem_list, list); @@ -505,7 +472,7 @@ static void free_all_reserved_pages(void) snd_dma_free_pages(&mem->buffer); kfree(mem); } - up(&list_mutex); + mutex_unlock(&list_mutex); } @@ -526,7 +493,7 @@ static int snd_mem_proc_read(char *page, char **start, off_t off, int devno; static char *types[] = { "UNKNOWN", "CONT", "DEV", "DEV-SG", "SBUS" }; - down(&list_mutex); + mutex_lock(&list_mutex); len += snprintf(page + len, count - len, "pages : %li bytes (%li pages per %likB)\n", pages * PAGE_SIZE, pages, PAGE_SIZE / 1024); @@ -541,7 +508,7 @@ static int snd_mem_proc_read(char *page, char **start, off_t off, " addr = 0x%lx, size = %d bytes\n", (unsigned long)mem->buffer.addr, (int)mem->buffer.bytes); } - up(&list_mutex); + mutex_unlock(&list_mutex); return len; }