diff options
Diffstat (limited to 'include/net/page_pool')
| -rw-r--r-- | include/net/page_pool/types.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/include/net/page_pool/types.h b/include/net/page_pool/types.h index 5e43a08d3231..5460cbab5de0 100644 --- a/include/net/page_pool/types.h +++ b/include/net/page_pool/types.h @@ -130,12 +130,22 @@ struct page_pool { struct page_pool_params_fast p; int cpuid; + u32 pages_state_hold_cnt; bool has_init_callback; + /* The following block must stay within one cacheline. On 32-bit + * systems, sizeof(long) == sizeof(int), so that the block size is + * ``3 * sizeof(long)``. On 64-bit systems, the actual size is + * ``2 * sizeof(long) + sizeof(int)``. The closest pow-2 to both of + * them is ``4 * sizeof(long)``, so just use that one for simplicity. + * Having it aligned to a cacheline boundary may be excessive and + * doesn't bring any good. + */ + __cacheline_group_begin(frag) __aligned(4 * sizeof(long)); long frag_users; struct page *frag_page; unsigned int frag_offset; - u32 pages_state_hold_cnt; + __cacheline_group_end(frag); struct delayed_work release_dw; void (*disconnect)(void *pool); |