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slab: make kmem_cache_create_usercopy() static inline

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Make kmem_cache_create_usercopy() a static inline function.

Signed-off-by: Christian Brauner <brauner@kernel.org>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
This commit is contained in:
Christian Brauner 2024-09-05 09:56:58 +02:00 committed by Vlastimil Babka
parent 3d453e60f1
commit 0c9050b09c
2 changed files with 44 additions and 50 deletions
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49
include/linux/slab.h
View File

@ -266,11 +266,50 @@ struct kmem_cache *__kmem_cache_create_args(const char *name,
struct kmem_cache *__kmem_cache_create(const char *name, unsigned int size,
unsigned int align, slab_flags_t flags,
void (*ctor)(void *));
struct kmem_cache *kmem_cache_create_usercopy(const char *name,
unsigned int size, unsigned int align,
slab_flags_t flags,
unsigned int useroffset, unsigned int usersize,
void (*ctor)(void *));
/**
* kmem_cache_create_usercopy - Create a cache with a region suitable
* for copying to userspace
* @name: A string which is used in /proc/slabinfo to identify this cache.
* @size: The size of objects to be created in this cache.
* @align: The required alignment for the objects.
* @flags: SLAB flags
* @useroffset: Usercopy region offset
* @usersize: Usercopy region size
* @ctor: A constructor for the objects.
*
* Cannot be called within a interrupt, but can be interrupted.
* The @ctor is run when new pages are allocated by the cache.
*
* The flags are
*
* %SLAB_POISON - Poison the slab with a known test pattern (a5a5a5a5)
* to catch references to uninitialised memory.
*
* %SLAB_RED_ZONE - Insert `Red` zones around the allocated memory to check
* for buffer overruns.
*
* %SLAB_HWCACHE_ALIGN - Align the objects in this cache to a hardware
* cacheline. This can be beneficial if you're counting cycles as closely
* as davem.
*
* Return: a pointer to the cache on success, NULL on failure.
*/
static inline struct kmem_cache *
kmem_cache_create_usercopy(const char *name, unsigned int size,
unsigned int align, slab_flags_t flags,
unsigned int useroffset, unsigned int usersize,
void (*ctor)(void *))
{
struct kmem_cache_args kmem_args = {
.align = align,
.ctor = ctor,
.useroffset = useroffset,
.usersize = usersize,
};
return __kmem_cache_create_args(name, size, &kmem_args, flags);
}
/* If NULL is passed for @args, use this variant with default arguments. */
static inline struct kmem_cache *

45
mm/slab_common.c
View File

@ -337,51 +337,6 @@ out_unlock:
}
EXPORT_SYMBOL(__kmem_cache_create_args);
/**
* kmem_cache_create_usercopy - Create a cache with a region suitable
* for copying to userspace
* @name: A string which is used in /proc/slabinfo to identify this cache.
* @size: The size of objects to be created in this cache.
* @align: The required alignment for the objects.
* @flags: SLAB flags
* @useroffset: Usercopy region offset
* @usersize: Usercopy region size
* @ctor: A constructor for the objects.
*
* Cannot be called within a interrupt, but can be interrupted.
* The @ctor is run when new pages are allocated by the cache.
*
* The flags are
*
* %SLAB_POISON - Poison the slab with a known test pattern (a5a5a5a5)
* to catch references to uninitialised memory.
*
* %SLAB_RED_ZONE - Insert `Red` zones around the allocated memory to check
* for buffer overruns.
*
* %SLAB_HWCACHE_ALIGN - Align the objects in this cache to a hardware
* cacheline. This can be beneficial if you're counting cycles as closely
* as davem.
*
* Return: a pointer to the cache on success, NULL on failure.
*/
struct kmem_cache *
kmem_cache_create_usercopy(const char *name, unsigned int size,
unsigned int align, slab_flags_t flags,
unsigned int useroffset, unsigned int usersize,
void (*ctor)(void *))
{
struct kmem_cache_args kmem_args = {
.align = align,
.ctor = ctor,
.useroffset = useroffset,
.usersize = usersize,
};
return __kmem_cache_create_args(name, size, &kmem_args, flags);
}
EXPORT_SYMBOL(kmem_cache_create_usercopy);
/**
* __kmem_cache_create - Create a cache.
* @name: A string which is used in /proc/slabinfo to identify this cache.