kmem_cache_create — Create a cache.
struct kmem_cache * kmem_cache_create ( | const char * name, |
| size_t size, | |
| size_t align, | |
| unsigned long flags, | |
void (*ctor)
(void *)); |
nameA string which is used in /proc/slabinfo to identify this cache.
sizeThe size of objects to be created in this cache.
alignThe required alignment for the objects.
flagsSLAB flags
ctorA constructor for the objects.
Returns a ptr to the cache on success, NULL on failure.
Cannot be called within a int, but can be interrupted.
The ctor is run when new pages are allocated by the cache.
name must be valid until the cache is destroyed. This implies that
the module calling this has to destroy the cache before getting unloaded.
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.