Messages in this thread | | | Date | Wed, 26 Jul 2006 08:24:15 -0700 (PDT) | From | Christoph Lameter <> | Subject | Re: [patch] slab: always follow arch requested alignments |
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On Wed, 26 Jul 2006, Pekka J Enberg wrote:
> On Wed, 26 Jul 2006, Christoph Lameter wrote: > > The following patch adds an option SLAB_DEBUG_OVERRIDE to switch off > > debugging if its on by default. S390 would have to set ARCH_KMALLOC_FLAGS > > to SLAB_DEBUG_OVERRIDE. The flag will then be passed in > > kmem_cache_init to kmem_cache_create(). This approach also preserves the > > existing slab behavior for all other archs. > > Please read my patch again. The rules are simple: we must disable > debugging if architecture OR caller mandated alignment is greater than > BYTES_PER_WORD. Note: for kmem_cache_init() the caller mandated alignment > _is_ ARCH_KMALLOC_MINALIGN.
We intentionally discard the caller mandated alignment for debugging purposes.
> My patch takes care of _both_ ARCH_KMALLOC_MINALIGN and > ARCH_SLAB_MINALIGN.
And it changes the basic way that slab debugging works. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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