Re: [RFC][PATCH] add pagesize field to /proc/pid/numa_maps

[Petr Holasek]

On Mon, 20 Oct 2014, David Rientjes <rientjes@xxxxxxxxxx> wrote:
> On Tue, 21 Oct 2014, Petr Holasek wrote:
> 
> > There were some similar attempts to add vma's pagesize to numa_maps in the past,
> > so I've distilled the most straightforward one - adding pagesize field
> > expressing size in kbytes to each line. Although page size can be also obtained
> > from smaps file, adding pagesize to numa_maps makes the interface more compact
> > and easier to use without need for traversing other files.
> > 
> > New numa_maps output looks like that:
> > 
> > 2aaaaac00000 default file=/dev/hugepages/hugepagefile huge pagesize=2097152 dirty=1 N0=1
> > 7f302441a000 default file=/usr/lib64/libc-2.17.so pagesize=4096 mapped=65 mapmax=38 N0=65
> > 
> > Signed-off-by: Petr Holasek <pholasek@xxxxxxxxxx>
> 
> I guess the existing "huge" is insufficient on platforms that support 
> multiple hugepage sizes.

Why do you think so? pagesize= could also distinguish between multiple hugepage
sizes.

-- 
Petr Holasek
pholasek@xxxxxxxxxx
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