lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

sh: Pre-allocate a reasonable number of DMA debug entries.

Browse Source 
This prevents the DMA API debugging from running out of entries right
away on boot. Defines 4096 entries by default, which while a bit on the
heavy side, ought to leave enough breathing room for some time.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt
2009-04-14 15:22:15 +09:00
parent 0ee50254df
commit 7b41f5688c
1 changed files with 11 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
arch/sh/mm/consistent.c
View File

@@ -10,12 +10,22 @@
* for more details. * for more details.
*/ */
#include <linux/mm.h> #include <linux/mm.h>
#include <linux/init.h>
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/dma-mapping.h> #include <linux/dma-mapping.h>
#include <linux/dma-debug.h> #include <linux/dma-debug.h>
#include <linux/io.h>
#include <asm/cacheflush.h> #include <asm/cacheflush.h>
#include <asm/addrspace.h> #include <asm/addrspace.h>
#include <asm/io.h>
#define PREALLOC_DMA_DEBUG_ENTRIES 4096
static int __init dma_init(void)
{
dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES);
return 0;
}
fs_initcall(dma_init);
void *dma_alloc_coherent(struct device *dev, size_t size, void *dma_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp) dma_addr_t *dma_handle, gfp_t gfp)