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| author | Lorenzo Bianconi <lorenzo@kernel.org> | 2020-11-23 16:45:46 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2020-11-24 14:56:54 -0800 |
| commit | 2f1cce214b237143359202abd83575b91130260f (patch) | |
| tree | d01972d989a03d2de94c14d305c32bc6ea4aad9a | |
| parent | 1d155dfdf50efc2b0793bce93c06d1a5b23d0877 (diff) | |
| download | linux-2f1cce214b237143359202abd83575b91130260f.tar.gz linux-2f1cce214b237143359202abd83575b91130260f.tar.bz2 linux-2f1cce214b237143359202abd83575b91130260f.zip | |
net: page_pool: Add page_pool_put_page_bulk() to page_pool.rst
Introduce page_pool_put_page_bulk() entry into the API section of
page_pool.rst
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/a6a5141b4d7b7b71fa7778b16b48f80095dd3233.1606146163.git.lorenzo@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | Documentation/networking/page_pool.rst | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/networking/page_pool.rst b/Documentation/networking/page_pool.rst index 43088ddf95e4..a147591ce203 100644 --- a/Documentation/networking/page_pool.rst +++ b/Documentation/networking/page_pool.rst @@ -97,6 +97,14 @@ a page will cause no race conditions is enough. * page_pool_get_dma_dir(): Retrieve the stored DMA direction. +* page_pool_put_page_bulk(): Tries to refill a number of pages into the + ptr_ring cache holding ptr_ring producer lock. If the ptr_ring is full, + page_pool_put_page_bulk() will release leftover pages to the page allocator. + page_pool_put_page_bulk() is suitable to be run inside the driver NAPI tx + completion loop for the XDP_REDIRECT use case. + Please note the caller must not use data area after running + page_pool_put_page_bulk(), as this function overwrites it. + Coding examples =============== |