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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>
zero-sugar-mainline-defconfig
Lorenzo Bianconi 2020-11-23 16:45:46 +01:00 committed by Jakub Kicinski
parent 1d155dfdf5
commit 2f1cce214b
1 changed files with 8 additions and 0 deletions
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Documentation/networking/page_pool.rst
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@ -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
===============