From 7bc13b5b60e9412a7ddef300ce2c661eecd1fd5d Mon Sep 17 00:00:00 2001 From: Barry Song Date: Sun, 5 Jul 2020 21:18:58 +1200 Subject: crypto: api - permit users to specify numa node of acomp hardware For a Linux server with NUMA, there are possibly multiple (de)compressors which are either local or remote to some NUMA node. Some drivers will automatically use the (de)compressor near the CPU calling acomp_alloc(). However, it is not necessarily correct because users who send acomp_req could be from different NUMA node with the CPU which allocates acomp. Just like kernel has kmalloc() and kmalloc_node(), here crypto can have same support. Cc: Seth Jennings Cc: Dan Streetman Cc: Vitaly Wool Cc: Andrew Morton Cc: Jonathan Cameron Signed-off-by: Barry Song Signed-off-by: Herbert Xu --- include/crypto/acompress.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'include/crypto') diff --git a/include/crypto/acompress.h b/include/crypto/acompress.h index 2b4d2b06ccbd..fcde59c65a81 100644 --- a/include/crypto/acompress.h +++ b/include/crypto/acompress.h @@ -106,6 +106,24 @@ struct acomp_alg { */ struct crypto_acomp *crypto_alloc_acomp(const char *alg_name, u32 type, u32 mask); +/** + * crypto_alloc_acomp_node() -- allocate ACOMPRESS tfm handle with desired NUMA node + * @alg_name: is the cra_name / name or cra_driver_name / driver name of the + * compression algorithm e.g. "deflate" + * @type: specifies the type of the algorithm + * @mask: specifies the mask for the algorithm + * @node: specifies the NUMA node the ZIP hardware belongs to + * + * Allocate a handle for a compression algorithm. Drivers should try to use + * (de)compressors on the specified NUMA node. + * The returned struct crypto_acomp is the handle that is required for any + * subsequent API invocation for the compression operations. + * + * Return: allocated handle in case of success; IS_ERR() is true in case + * of an error, PTR_ERR() returns the error code. + */ +struct crypto_acomp *crypto_alloc_acomp_node(const char *alg_name, u32 type, + u32 mask, int node); static inline struct crypto_tfm *crypto_acomp_tfm(struct crypto_acomp *tfm) { -- cgit v1.2.3-70-g09d2