On Fri, 27 Mar 2015, Peter Zijlstra wrote: > > We could align the base on 8 bytes to gain an extra bit in the pointer > > and use that bit to indicate the running state. Then these sites can > > spin on that bit while we can change the actual base pointer. > > Even though tvec_base has ____cacheline_aligned stuck on, most are > allocated using kzalloc_node() which does not actually respect that but > already guarantees a minimum u64 alignment, so I think we can use that > third bit without too much magic.
Create a new slab cache for this purpose that does the proper aligning? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/