Messages in this thread |  | | Date | Thu, 2 Jan 2003 16:11:27 -0800 | From | William Lee Irwin III <> | Subject | Re: Question about Zone Allocation 2.4.X |
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On Thu, Jan 02, 2003 at 06:15:54PM -0700, Jeff V. Merkey wrote: > Looks like we simply jetisioned the concept of a PPL (Physical Pages > List) and went with a zone allocator instead. I'm sure there was a > good reason for it historically. Rolling a separate zone is exactly > what I was thinking when I reviewed the code intially. Question, > which files will be affected so when I put this one in, I don't end > up breaking the VM and userspace balancing logic. i.e. Could you > point me to Jens' ZONE_DMA32 code as well.
Adding new zone types is easy. Just add them to mmzone.h, avoid setting ->virtual (which does not universally exist) in free_area_init_core() if it's not perma-mapped, stuff them in the fallback sequence in build_zonelists(), and detect them in arch/*/mm/init.c
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