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SubjectRe: [PATCH]: Adding a counter in vma to indicate the number of physical pages backing it
Andi Kleen wrote:

>On Monday 12 June 2006 21:42, Rohit Seth wrote:
>>I think having this
>>information in each vma keeps the impact (of adding new counter) to very
>>Second question is to advertize this value to user space. Please let me
>>know what suites the most among /proc, /sys or system call (or if there
>>is any other mechanism then let me know) for a per process per segment
>>related information.
>I think we first need to identify the basic need.
>Don't see why we even need per VMA information so far.

Exactly. There is no question that walking page tables will be slower
than having a counter like your patch does; the question is why we
need it.


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