Messages in this thread Patch in this message | | | Date | Tue, 11 Mar 2008 02:34:44 +0100 | From | Andi Kleen <> | Subject | [PATCH] Enable dmapool debugging for CONFIG_SLUB_DEBUG_ON too |
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Enable dmapool debugging for CONFIG_SLUB_DEBUG_ON too
Previously it was only enabled for CONFIG_SLAB_DEBUG.
Not hooked into the slub runtime debug configuration, so you currently only get it with CONFIG_SLUB_DEBUG_ON, not plain CONFIG_SLUB_DEBUG
Signed-off-by: Andi Kleen <ak@suse.de>
Index: linux/mm/dmapool.c =================================================================== --- linux.orig/mm/dmapool.c +++ linux/mm/dmapool.c @@ -37,6 +37,10 @@ #include <linux/types.h> #include <linux/wait.h> +#if defined(CONFIG_SLAB_DEBUG) || 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( 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_po { 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 *po 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 } offset = vaddr - page->vaddr; -#ifdef CONFIG_DEBUG_SLAB +#ifdef DMAPOOL_DEBUG if ((dma - page->dma) != offset) { if (pool->dev) dev_err(pool->dev,
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