summaryrefslogtreecommitdiffstats
path: root/sound/core/memalloc.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/core/memalloc.c')
-rw-r--r--sound/core/memalloc.c56
1 files changed, 14 insertions, 42 deletions
diff --git a/sound/core/memalloc.c b/sound/core/memalloc.c
index 19b3dcb..3fc6f97 100644
--- a/sound/core/memalloc.c
+++ b/sound/core/memalloc.c
@@ -31,7 +31,7 @@
#include <asm/uaccess.h>
#include <linux/dma-mapping.h>
#include <linux/moduleparam.h>
-#include <asm/semaphore.h>
+#include <linux/mutex.h>
#include <sound/memalloc.h>
#ifdef CONFIG_SBUS
#include <asm/sbus.h>
@@ -54,7 +54,7 @@ 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 */
@@ -83,7 +83,7 @@ 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()
*
@@ -141,10 +141,6 @@ 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
@@ -163,20 +159,6 @@ 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
@@ -195,10 +177,8 @@ 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;
}
@@ -217,7 +197,6 @@ 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);
}
@@ -242,12 +221,8 @@ 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;
}
@@ -262,9 +237,6 @@ 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);
}
@@ -440,7 +412,7 @@ 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 &&
@@ -452,11 +424,11 @@ 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;
}
@@ -477,11 +449,11 @@ 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;
}
@@ -493,7 +465,7 @@ 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);
@@ -501,7 +473,7 @@ static void free_all_reserved_pages(void)
snd_dma_free_pages(&mem->buffer);
kfree(mem);
}
- up(&list_mutex);
+ mutex_unlock(&list_mutex);
}
@@ -522,7 +494,7 @@ 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);
@@ -537,7 +509,7 @@ 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;
}
OpenPOWER on IntegriCloud