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tools/testing: Add support for prefilled slab sheafs

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Add the prefilled sheaf structs to the slab header and the associated
functions to the testing/shared/linux.c file.

Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
This commit is contained in:
Liam R. Howlett
2025-09-03 15:00:00 +02:00
committed by Vlastimil Babka
parent 025f93101b
commit fdbebab19f
2 changed files with 117 additions and 0 deletions
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28
tools/include/linux/slab.h
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@@ -123,6 +123,18 @@ struct kmem_cache_args {
void (*ctor)(void *);
};
struct slab_sheaf {
union {
struct list_head barn_list;
/* only used for prefilled sheafs */
unsigned int capacity;
};
struct kmem_cache *cache;
unsigned int size;
int node; /* only used for rcu_sheaf */
void *objects[];
};
static inline void *kzalloc(size_t size, gfp_t gfp)
{
return kmalloc(size, gfp | __GFP_ZERO);
@@ -173,5 +185,21 @@ __kmem_cache_create(const char *name, unsigned int size, unsigned int align,
void kmem_cache_free_bulk(struct kmem_cache *cachep, size_t size, void **list);
int kmem_cache_alloc_bulk(struct kmem_cache *cachep, gfp_t gfp, size_t size,
void **list);
struct slab_sheaf *
kmem_cache_prefill_sheaf(struct kmem_cache *s, gfp_t gfp, unsigned int size);
void *
kmem_cache_alloc_from_sheaf(struct kmem_cache *s, gfp_t gfp,
struct slab_sheaf *sheaf);
void kmem_cache_return_sheaf(struct kmem_cache *s, gfp_t gfp,
struct slab_sheaf *sheaf);
int kmem_cache_refill_sheaf(struct kmem_cache *s, gfp_t gfp,
struct slab_sheaf **sheafp, unsigned int size);
static inline unsigned int kmem_cache_sheaf_size(struct slab_sheaf *sheaf)
{
return sheaf->size;
}
#endif /* _TOOLS_SLAB_H */