diff options
Diffstat (limited to 'include/linux/node.h')
| -rw-r--r-- | include/linux/node.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/include/linux/node.h b/include/linux/node.h index 4139d728f8b3..1a557c589ecb 100644 --- a/include/linux/node.h +++ b/include/linux/node.h @@ -35,10 +35,45 @@ struct node_hmem_attrs { unsigned int write_latency; }; +enum cache_indexing { + NODE_CACHE_DIRECT_MAP, + NODE_CACHE_INDEXED, + NODE_CACHE_OTHER, +}; + +enum cache_write_policy { + NODE_CACHE_WRITE_BACK, + NODE_CACHE_WRITE_THROUGH, + NODE_CACHE_WRITE_OTHER, +}; + +/** + * struct node_cache_attrs - system memory caching attributes + * + * @indexing: The ways memory blocks may be placed in cache + * @write_policy: Write back or write through policy + * @size: Total size of cache in bytes + * @line_size: Number of bytes fetched on a cache miss + * @level: The cache hierarchy level + */ +struct node_cache_attrs { + enum cache_indexing indexing; + enum cache_write_policy write_policy; + u64 size; + u16 line_size; + u8 level; +}; + #ifdef CONFIG_HMEM_REPORTING +void node_add_cache(unsigned int nid, struct node_cache_attrs *cache_attrs); void node_set_perf_attrs(unsigned int nid, struct node_hmem_attrs *hmem_attrs, unsigned access); #else +static inline void node_add_cache(unsigned int nid, + struct node_cache_attrs *cache_attrs) +{ +} + static inline void node_set_perf_attrs(unsigned int nid, struct node_hmem_attrs *hmem_attrs, unsigned access) @@ -53,6 +88,10 @@ struct node { #if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) && defined(CONFIG_HUGETLBFS) struct work_struct node_work; #endif +#ifdef CONFIG_HMEM_REPORTING + struct list_head cache_attrs; + struct device *cache_dev; +#endif }; struct memory_block; |