Messages in this thread | | | Date | Thu, 4 Aug 2005 07:11:36 -0700 (PDT) | From | Christoph Lameter <> | Subject | Re: [PATCH] String conversions for memory policy |
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On Wed, 3 Aug 2005, Andi Kleen wrote:
> I really hate this whole /proc/<pid>/numa_policy thing. /proc/<pid>/maps > was imho always a desaster (hard to parse, slow etc.). Also external > access of NUMA policies has interesting locking issues. I intentionally > didn't add something like that when I designed the original > NUMA API. Please don't add it.
You designed a NUMA API to control a process memory access patterns without the ability to view or modify the policies in use?
The locking issues for the policy information in the task_struct could be solved by having a thread execute a function that either sets or gets the memory policy. The vma policies already have a locking mechanism.
This piece here only does conversion to a string representation so it should not be affected by locking issues. Processes need to do proper locking when using the conversion functions.
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