Messages in this thread | | | Date | Sat, 22 Jul 2006 07:50:00 -0700 (PDT) | From | Christoph Lameter <> | Subject | Re: [patch] slab: always follow arch requested alignments |
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On Sat, 22 Jul 2006, Heiko Carstens wrote:
> In kmem_cache_create(): always check if BYTES_PER_WORD is less than > ARCH_SLAB_MINALIGN and disable debug options that would set the > alignment to BYTES_PER_WORD.
Why disable debug options?
> This will make sure that all slab caches will have at least an > ARCH_SLAB_MINALIGN alignment.
You can specify alignment at cache creation. Why do we need all slabs to be aligned?
> In addition make sure that a caller mandated align which is greater > than BYTES_PER_WORD also disables the same debug options. > This makes sure that ARCH_KMALLOC_MINALIGN also has an effect if > CONFIG_DEBUG_SLAB is set.
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