| Date | Fri, 16 Mar 2012 13:34:37 -0500 (CDT) | From | Christoph Lameter <> | Subject | Re: [RFC][PATCH 10/26] mm, mpol: Make mempolicy home-node aware |
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On Fri, 16 Mar 2012, Peter Zijlstra wrote:
> Add another layer of fallback policy to make the home node concept > useful from a memory allocation PoV. > > This changes the mpol order to: > > - vma->vm_ops->get_policy [if applicable] > - vma->vm_policy [if applicable] > - task->mempolicy > - tsk_home_node() preferred [NEW] > - default_policy > > Note that the tsk_home_node() policy has Migrate-on-Fault enabled to > facilitate efficient on-demand memory migration.
The numa hierachy is already complex. Could we avoid adding another layer by adding a MPOL_HOME_NODE and make that the default?
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