Add the new kmalloc_array() to the list of general-purpose memory allocators in chapter 14. Signed-off-by: Xi Wang <xi.wang@xxxxxxxxx> Cc: Jesper Juhl <jj@xxxxxxxxxxxxx> Cc: Jens Axboe <axboe@xxxxxxxxx> Cc: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Cc: David Rientjes <rientjes@xxxxxxxxxx> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: Pekka Enberg <penberg@xxxxxxxxxx> --- Documentation/CodingStyle | 16 ++++++++++++++-- 1 files changed, 14 insertions(+), 2 deletions(-) diff --git a/Documentation/CodingStyle b/Documentation/CodingStyle index c58b236..cb9258b 100644 --- a/Documentation/CodingStyle +++ b/Documentation/CodingStyle @@ -671,8 +671,9 @@ ones already enabled by DEBUG. Chapter 14: Allocating memory The kernel provides the following general purpose memory allocators: -kmalloc(), kzalloc(), kcalloc(), vmalloc(), and vzalloc(). Please refer to -the API documentation for further information about them. +kmalloc(), kzalloc(), kmalloc_array(), kcalloc(), vmalloc(), and +vzalloc(). Please refer to the API documentation for further information +about them. The preferred form for passing a size of a struct is the following: @@ -686,6 +687,17 @@ Casting the return value which is a void pointer is redundant. The conversion from void pointer to any other pointer type is guaranteed by the C programming language. +The preferred form for allocating an array is the following: + + p = kmalloc_array(n, sizeof(...), ...); + +The preferred form for allocating a zeroed array is the following: + + p = kcalloc(n, sizeof(...), ...); + +Both forms check for overflow on the allocation size n * sizeof(...), +and return NULL if that occurred. + Chapter 15: The inline disease -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
