diff options
Diffstat (limited to 'mm/percpu-internal.h')
| -rw-r--r-- | mm/percpu-internal.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/mm/percpu-internal.h b/mm/percpu-internal.h index f9847c131998..cdd0aa597a81 100644 --- a/mm/percpu-internal.h +++ b/mm/percpu-internal.h @@ -41,10 +41,17 @@ struct pcpu_chunk { struct list_head list; /* linked to pcpu_slot lists */ int free_bytes; /* free bytes in the chunk */ struct pcpu_block_md chunk_md; - void *base_addr; /* base address of this chunk */ + unsigned long *bound_map; /* boundary map */ + + /* + * base_addr is the base address of this chunk. + * To reduce false sharing, current layout is optimized to make sure + * base_addr locate in the different cacheline with free_bytes and + * chunk_md. + */ + void *base_addr ____cacheline_aligned_in_smp; unsigned long *alloc_map; /* allocation map */ - unsigned long *bound_map; /* boundary map */ struct pcpu_block_md *md_blocks; /* metadata blocks */ void *data; /* chunk data */ |