Re: [RFC] Cleanup slab headers / API to allow easy addition of newslab allocators

From: Christoph Lameter
Date: Sat Dec 09 2006 - 14:02:42 EST


On Sat, 9 Dec 2006, Pekka Enberg wrote:

> Hi Christoph,
>
> On 12/8/06, Christoph Lameter <clameter@xxxxxxx> wrote:
> > +#define SLAB_POISON 0x00000800UL /* DEBUG: Poison
> > objects */
> > +#define SLAB_HWCACHE_ALIGN 0x00002000UL /* Align objs on
> > cache lines */
> > +#define SLAB_CACHE_DMA 0x00004000UL /* Use GFP_DMA memory */
> > +#define SLAB_MUST_HWCACHE_ALIGN 0x00008000UL /* Force alignment
> > even if debuggin is active */
>
> Please fix formatting while you're at it.

Yes I did that. Please look at it after you applied the diff.

> > + * its own optimized kmalloc definitions (like SLOB).
> > + */
> > +
> > +#if defined(CONFIG_NUMA) || defined(CONFIG_DEBUG_SLAB)
> > +#error "SLAB fallback definitions not usable for NUMA or Slab debug"
>
> Do we need this? Shouldn't we just make sure no one can enable
> CONFIG_NUMA and CONFIG_DEBUG_SLAB for non-compatible allocators?

Ok. Dropped it.
>
> > -static inline void *kmalloc(size_t size, gfp_t flags)
> > +void *kmalloc(size_t size, gfp_t flags)
>
> static inline?
>
> > +void *kzalloc(size_t size, gfp_t flags)
> > +{
> > + return __kzalloc(size, flags);
> > +}
>
> same here.
>
Ok. Fixed that.

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