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authorAndi Kleen <ak@suse.de>2008-04-28 02:12:37 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-28 08:58:20 -0700
commitb5ee5befa75e33e55d34584ad10286c5005cb1de (patch)
treecc8953411811c75eeffe53dc387fad66dec92144 /mm/dmapool.c
parenta43361cf3cb6fb6431fdbfb0f3ef26a334826160 (diff)
downloadlinux-stericsson-b5ee5befa75e33e55d34584ad10286c5005cb1de.tar.gz
dmapool: enable debugging for CONFIG_SLUB_DEBUG_ON too
Previously it was only enabled for CONFIG_DEBUG_SLAB. Not hooked into the slub runtime debug configuration, so you currently only get it with CONFIG_SLUB_DEBUG_ON, not plain CONFIG_SLUB_DEBUG Acked-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/dmapool.c')
-rw-r--r--mm/dmapool.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/mm/dmapool.c b/mm/dmapool.c
index 34aaac451a96..b1f0885dda22 100644
--- a/mm/dmapool.c
+++ b/mm/dmapool.c
@@ -37,6 +37,10 @@
#include <linux/types.h>
#include <linux/wait.h>
+#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB_DEBUG_ON)
+#define DMAPOOL_DEBUG 1
+#endif
+
struct dma_pool { /* the pool */
struct list_head page_list;
spinlock_t lock;
@@ -216,7 +220,7 @@ static struct dma_page *pool_alloc_page(struct dma_pool *pool, gfp_t mem_flags)
page->vaddr = dma_alloc_coherent(pool->dev, pool->allocation,
&page->dma, mem_flags);
if (page->vaddr) {
-#ifdef CONFIG_DEBUG_SLAB
+#ifdef DMAPOOL_DEBUG
memset(page->vaddr, POOL_POISON_FREED, pool->allocation);
#endif
pool_initialise_page(pool, page);
@@ -239,7 +243,7 @@ static void pool_free_page(struct dma_pool *pool, struct dma_page *page)
{
dma_addr_t dma = page->dma;
-#ifdef CONFIG_DEBUG_SLAB
+#ifdef DMAPOOL_DEBUG
memset(page->vaddr, POOL_POISON_FREED, pool->allocation);
#endif
dma_free_coherent(pool->dev, pool->allocation, page->vaddr, dma);
@@ -336,7 +340,7 @@ void *dma_pool_alloc(struct dma_pool *pool, gfp_t mem_flags,
page->offset = *(int *)(page->vaddr + offset);
retval = offset + page->vaddr;
*handle = offset + page->dma;
-#ifdef CONFIG_DEBUG_SLAB
+#ifdef DMAPOOL_DEBUG
memset(retval, POOL_POISON_ALLOCATED, pool->size);
#endif
done:
@@ -391,7 +395,7 @@ void dma_pool_free(struct dma_pool *pool, void *vaddr, dma_addr_t dma)
}
offset = vaddr - page->vaddr;
-#ifdef CONFIG_DEBUG_SLAB
+#ifdef DMAPOOL_DEBUG
if ((dma - page->dma) != offset) {
if (pool->dev)
dev_err(pool->dev,