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SubjectRe: [03/14] vmallocinfo: Support display of vcompound for a virtual compound page
Christoph Lameter a écrit :
> Add another flag to the vmalloc subsystem to mark virtual compound pages.
>
> Signed-off-by: Christoph Lameter <clameter@sgi.com>
>
> ---
> include/linux/vmalloc.h | 1 +
> mm/vmalloc.c | 3 +++
> 2 files changed, 4 insertions(+)
>
> Index: linux-2.6.25-rc5-mm1/include/linux/vmalloc.h
> ===================================================================
> --- linux-2.6.25-rc5-mm1.orig/include/linux/vmalloc.h 2008-03-19 18:17:42.093443900 -0700
> +++ linux-2.6.25-rc5-mm1/include/linux/vmalloc.h 2008-03-19 18:27:20.150422445 -0700
> @@ -12,6 +12,7 @@ struct vm_area_struct;
> #define VM_MAP 0x00000004 /* vmap()ed pages */
> #define VM_USERMAP 0x00000008 /* suitable for remap_vmalloc_range */
> #define VM_VPAGES 0x00000010 /* buffer for pages was vmalloc'ed */
> +#define VM_VCOMPOUND 0x00000020 /* Page allocator fallback */
> /* bits [20..32] reserved for arch specific ioremap internals */
>
> /*
> Index: linux-2.6.25-rc5-mm1/mm/vmalloc.c
> ===================================================================
> --- linux-2.6.25-rc5-mm1.orig/mm/vmalloc.c 2008-03-19 18:18:02.689633934 -0700
> +++ linux-2.6.25-rc5-mm1/mm/vmalloc.c 2008-03-19 18:27:20.150422445 -0700
> @@ -974,6 +974,9 @@ static int s_show(struct seq_file *m, vo
> if (v->flags & VM_VPAGES)
> seq_printf(m, " vpages");
>
> + if (v->flags & VM_VCOMPOUND)
> + seq_printf(m, " vcompound");
> +
> seq_putc(m, '\n');
> return 0;
> }
>

I would love to see NUMA information as well on vmallocinfo, but have
currently no available time to prepare a patch.

Counters with numbers of pages per node would be great.

(like in /proc/pid/numa_maps)

N0=2 N1=2 N2=2 N3=2


This way we could check hashdist is working or not, since it depends on
various numa policies :)

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