On Sat 02-03-19 12:38:58, Yafang Shao wrote:
> Only mm_compaction_isolate_{free, migrate}pages may be used when
> CONFIG_COMPACTION is not set.
> All others are used only when CONFIG_COMPACTION is set.
Why is this an improvement?
> Signed-off-by: Yafang Shao <laoar.shao@xxxxxxxxx>
> ---
> include/trace/events/compaction.h | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/include/trace/events/compaction.h b/include/trace/events/compaction.h
> index 6074eff..3e42078 100644
> --- a/include/trace/events/compaction.h
> +++ b/include/trace/events/compaction.h
> @@ -64,6 +64,7 @@
> TP_ARGS(start_pfn, end_pfn, nr_scanned, nr_taken)
> );
>
> +#ifdef CONFIG_COMPACTION
> TRACE_EVENT(mm_compaction_migratepages,
>
> TP_PROTO(unsigned long nr_all,
> @@ -132,7 +133,6 @@
> __entry->sync ? "sync" : "async")
> );
>
> -#ifdef CONFIG_COMPACTION
> TRACE_EVENT(mm_compaction_end,
> TP_PROTO(unsigned long zone_start, unsigned long migrate_pfn,
> unsigned long free_pfn, unsigned long zone_end, bool sync,
> @@ -166,7 +166,6 @@
> __entry->sync ? "sync" : "async",
> __print_symbolic(__entry->status, COMPACTION_STATUS))
> );
> -#endif
>
> TRACE_EVENT(mm_compaction_try_to_compact_pages,
>
> @@ -195,7 +194,6 @@
> __entry->prio)
> );
>
> -#ifdef CONFIG_COMPACTION
> DECLARE_EVENT_CLASS(mm_compaction_suitable_template,
>
> TP_PROTO(struct zone *zone,
> @@ -296,7 +294,6 @@
>
> TP_ARGS(zone, order)
> );
> -#endif
>
> TRACE_EVENT(mm_compaction_kcompactd_sleep,
>
> @@ -352,6 +349,7 @@
>
> TP_ARGS(nid, order, classzone_idx)
> );
> +#endif
>
> #endif /* _TRACE_COMPACTION_H */
>
> --
> 1.8.3.1
>
--
Michal Hocko
SUSE Labs
