On Wed, Mar 02, 2011 at 04:45:28PM -0800, Andi Kleen wrote:
> --- a/include/linux/vmstat.h
> +++ b/include/linux/vmstat.h
> @@ -58,6 +58,13 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
> UNEVICTABLE_PGCLEARED, /* on COW, page truncate */
> UNEVICTABLE_PGSTRANDED, /* unable to isolate on unlock */
> UNEVICTABLE_MLOCKFREED,
> +#ifdef CONFIG_TRANSPARENT_HUGEPAGE
> + THP_FAULT_ALLOC,
> + THP_COLLAPSE_ALLOC,
> + THP_FAULT_FALLBACK,
Wouldn't this better be named THP_FAULT_ALLOC_FAIL? After all, it
counts allocation failures, not what results from them.
Secondly, the order does not match the strings, it will report the
THP_COLLAPSE_ALLOC item as "thp_fault_fallback" and vice versa.
There are also odd spaces after the lines defining THP_COLLAPSE_ALLOC
and this one.
> + THP_COLLAPSE_ALLOC_FAILED,
> + THP_SPLIT,
> +#endif
> NR_VM_EVENT_ITEMS
> };
> diff --git a/mm/vmstat.c b/mm/vmstat.c
> index 2b461ed..a23f2d2 100644
> --- a/mm/vmstat.c
> +++ b/mm/vmstat.c
> @@ -946,6 +946,14 @@ static const char * const vmstat_text[] = {
> "unevictable_pgs_stranded",
> "unevictable_pgs_mlockfreed",
> #endif
> +
> +#ifdef CONFIG_TRANSPARENT_HUGEPAGE
> + "thp_fault_alloc",
> + "thp_fault_fallback",
> + "thp_collapse_alloc",
> + "thp_collapse_alloc_failure",
Can you make this "_failed" instead, to match the enum symbol? Andrea
wasn't sure which was better, "failure" or "failed". Right now, we
have two instances of "fail" and two instances of "failed" in
/proc/vmstat, it's probably best not to introduce a third one.
Thanks.
Hannes
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxxx For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>