[lkml]   [2007]   [Feb]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [patch 1/3 take2] smaps: extract pte walker from smaps code
On Tue, 6 Feb 2007, David Rientjes wrote:

> Extracts the page table entry walker from the smaps-specific code in
> fs/proc/task_mmu.c. This will be used later for clearing the reference
> bits on pages to measure the number of pages accessed over a time period
> through /proc/pid/smaps.

Clearing reference bits? Ummm... That is a pretty inaccurate measure since
reclaim can remove pages and revert the reference bits. It can never work

> The new struct pte_walker includes the struct vm_area_struct of the memory
> to walk over. Iteration begins at the start address and completes at the
> the end address. A pointer to another data structure may be stored in the
> private field such as the struct mem_size_stats, which acts as the smaps
> accumulator. For each page table entry in the VMA, the func function is
> called with the corresponding struct pte_walker, the pte_t, and its
> address.

Would it be possible to sync up with the people doing the page table

Could we somehow consolidate smaps and numa_maps?

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2007-02-07 09:33    [W:0.065 / U:53.920 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site