diff options
| -rw-r--r-- | Documentation/networking/page_pool.rst | 18 | ||||
| -rw-r--r-- | include/net/page_pool/helpers.h | 24 |
2 files changed, 14 insertions, 28 deletions
diff --git a/Documentation/networking/page_pool.rst b/Documentation/networking/page_pool.rst index 68b82cea13e4..215ebc92752c 100644 --- a/Documentation/networking/page_pool.rst +++ b/Documentation/networking/page_pool.rst @@ -4,22 +4,8 @@ Page Pool API ============= -The page_pool allocator is optimized for the XDP mode that uses one frame -per-page, but it can fallback on the regular page allocator APIs. - -Basic use involves replacing alloc_pages() calls with the -page_pool_alloc_pages() call. Drivers should use page_pool_dev_alloc_pages() -replacing dev_alloc_pages(). - -API keeps track of in-flight pages, in order to let API user know -when it is safe to free a page_pool object. Thus, API users -must call page_pool_put_page() to free the page, or attach -the page to a page_pool-aware objects like skbs marked with -skb_mark_for_recycle(). - -API user must call page_pool_put_page() once on a page, as it -will either recycle the page, or in case of refcnt > 1, it will -release the DMA mapping and in-flight state accounting. +.. kernel-doc:: include/net/page_pool/helpers.h + :doc: page_pool allocator Architecture overview ===================== diff --git a/include/net/page_pool/helpers.h b/include/net/page_pool/helpers.h index 78df91804c87..94231533a369 100644 --- a/include/net/page_pool/helpers.h +++ b/include/net/page_pool/helpers.h @@ -8,23 +8,23 @@ /** * DOC: page_pool allocator * - * This page_pool allocator is optimized for the XDP mode that - * uses one-frame-per-page, but have fallbacks that act like the + * The page_pool allocator is optimized for the XDP mode that + * uses one frame per-page, but it can fallback on the * regular page allocator APIs. * - * Basic use involve replacing alloc_pages() calls with the - * page_pool_alloc_pages() call. Drivers should likely use + * Basic use involves replacing alloc_pages() calls with the + * page_pool_alloc_pages() call. Drivers should use * page_pool_dev_alloc_pages() replacing dev_alloc_pages(). * - * API keeps track of in-flight pages, in-order to let API user know - * when it is safe to dealloactor page_pool object. Thus, API users - * must call page_pool_put_page() where appropriate and only attach - * the page to a page_pool-aware objects, like skbs marked for recycling. + * API keeps track of in-flight pages, in order to let API user know + * when it is safe to free a page_pool object. Thus, API users + * must call page_pool_put_page() to free the page, or attach + * the page to a page_pool-aware objects like skbs marked with + * skb_mark_for_recycle(). * - * API user must only call page_pool_put_page() once on a page, as it - * will either recycle the page, or in case of elevated refcnt, it - * will release the DMA mapping and in-flight state accounting. We - * hope to lift this requirement in the future. + * API user must call page_pool_put_page() once on a page, as it + * will either recycle the page, or in case of refcnt > 1, it will + * release the DMA mapping and in-flight state accounting. */ #ifndef _NET_PAGE_POOL_HELPERS_H #define _NET_PAGE_POOL_HELPERS_H |