Messages in this thread | | | Date | Thu, 11 Sep 2003 11:24:30 +0530 | From | Ravikiran G Thirumalai <> | Subject | Re: How reliable is SLAB_HWCACHE_ALIGN? |
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On Wed, Sep 10, 2003 at 11:41:04AM -0400, Robert Love wrote: > On Wed, 2003-09-10 at 04:16, Ravikiran G Thirumalai wrote: > > > Am I missing something or can there really be two objects on the same > > cacheline even when SLAB_HWCACHE_ALIGN is specified? > > No, you are right. > > If your object _must_ be cache aligned, use SLAB_MUST_HWCACHE_ALIGN. >
WOW!!! Looking at the code though, SLAB_MUST_HWCACHE_ALIGN is never considered by kmem_cache_create or kmem_cache_alloc. So, right now, there is no way of getting objects which are _guaranteed_ to be cacheline aligned!!!(?)
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