diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/swiotlb.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h index 3dae0f592063..1665a9ce8f94 100644 --- a/include/linux/swiotlb.h +++ b/include/linux/swiotlb.h @@ -32,8 +32,12 @@ struct scatterlist; #define IO_TLB_SHIFT 11 #define IO_TLB_SIZE (1 << IO_TLB_SHIFT) -/* default to 64MB */ -#define IO_TLB_DEFAULT_SIZE (64UL<<20) +/* compile-time default; overridable via CONFIG_SWIOTLB_DEFAULT_SIZE_MB */ +#ifdef CONFIG_SWIOTLB +#define IO_TLB_DEFAULT_SIZE ((unsigned long)CONFIG_SWIOTLB_DEFAULT_SIZE_MB << 20) +#else +#define IO_TLB_DEFAULT_SIZE (64UL << 20) +#endif unsigned long swiotlb_size_or_default(void); void __init swiotlb_init_remap(bool addressing_limit, unsigned int flags, |