X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=mm%2Fdmapool.c;h=b1f0885dda2275b09baa7d82205f6529efd093b1;hb=d2441183dc222d12961ff2201f5086c846505d93;hp=34aaac451a96124d163a99397af386ecb4fc6a4c;hpb=c64768a7d671bcde80bca2aed93f9e07edc069c3;p=linux-2.6-omap-h63xx.git diff --git a/mm/dmapool.c b/mm/dmapool.c index 34aaac451a9..b1f0885dda2 100644 --- a/mm/dmapool.c +++ b/mm/dmapool.c @@ -37,6 +37,10 @@ #include #include +#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,