kmem_cache_create — Create a cache.
kmem_cache_t * kmem_cache_create ( | const char * | name, |
| size_t | size, | |
| size_t | align, | |
| unsigned long | flags, | |
| void (* | ctor)
(void*, kmem_cache_t *, unsigned long), | |
| void (* | dtor)
(void*, kmem_cache_t *, unsigned long)); |
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.
dtorA destructor 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
and the dtor is run before the pages are handed back.
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_NO_REAP - Don't automatically reap this cache when we're under
memory pressure.
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.