Messages in this thread |  | | | Date | Thu, 06 Nov 2008 07:44:33 -0800 | | From | Mike Travis <> | | Subject | Re: [patch 5/7] x86_64: Support for cpu ops |
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Ingo Molnar wrote: > * Christoph Lameter <cl@linux-foundation.org> wrote: > >> On Thu, 6 Nov 2008, Ingo Molnar wrote: >> >>> hm, what happened to the rebase-PDA-to-percpu-area optimization >>> patches you guys were working on? I remember there was some >>> binutils flakiness - weird crashes and things like that. Did you >>> ever manage to stabilize it? It would be sad if only 32-bit could >>> take advantage of the optimized ops. >> I thought that was in your tree? I saw a conflict in -next with the >> zero based stuff a couple of weeks ago. Mike is working on that >> AFAICT. > > No, what's in tip/core/percpu is not the PDA patches: > > f8d90d9: percpu: zero based percpu build error on s390 > cfcfdff: Merge branch 'linus' into core/percpu > d379497: Zero based percpu: infrastructure to rebase the per cpu area to zero > b3a0cb4: x86: extend percpu ops to 64 bit > > But it's not actually utilized on x86. AFAICS you guys never came back > with working patches for that (tip/x86/percpu is empty currently), and > now i see something related on lkml on a separate track not Cc:-ed to > the x86 folks so i thought i'd ask whether more coordination is > desired here. > > So ... what's the merge plan here? I like your fundamental idea, it's > a nice improvement in a couple of areas and i'd like to help out make > it happen. Also, the new per-cpu allocator would be nice for the > sparseirq code. > > Ingo
Sorry, this was on my plate but the 4096 cpus if far more critical to get released and available. As soon as that's finally done, I can get back to the pda/zero-based changes.
Thanks, Mike
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