Re: [PATCH] tracing: adjust shrink_slab beginning trace event name

[KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>]

2011/12/23 Rafael Aquini <aquini@redhat.com>:
> While reviewing vmscan tracing events, I realized all functions which establish paired tracepoints (one at the beginning and another at the end of the function block) were following this naming pattern:
>  <tracepoint-name>_begin
>  <tarcepoint-name>_end
>
> However, the 'beginning' tracing event for shrink_slab() did not follow the aforementioned naming pattern. This patch renames that trace event to adjust this naming inconsistency.
>
> Signed-off-by: Rafael Aquini <aquini@redhat.com>

I don't think it's big issue. but seems no harm change.
 Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>



> ---
>  include/trace/events/vmscan.h |    2 +-
>  mm/vmscan.c                   |    2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/include/trace/events/vmscan.h b/include/trace/events/vmscan.h
> index edc4b3d..615bd6d 100644
> --- a/include/trace/events/vmscan.h
> +++ b/include/trace/events/vmscan.h
> @@ -179,7 +179,7 @@ DEFINE_EVENT(mm_vmscan_direct_reclaim_end_template, mm_vmscan_memcg_softlimit_re
>        TP_ARGS(nr_reclaimed)
>  );
>
> -TRACE_EVENT(mm_shrink_slab_start,
> +TRACE_EVENT(mm_shrink_slab_begin,
>        TP_PROTO(struct shrinker *shr, struct shrink_control *sc,
>                long nr_objects_to_shrink, unsigned long pgs_scanned,
>                unsigned long lru_pgs, unsigned long cache_items,
> diff --git a/mm/vmscan.c b/mm/vmscan.c
> index f54a05b..b24a593 100644
> --- a/mm/vmscan.c
> +++ b/mm/vmscan.c
> @@ -301,7 +301,7 @@ unsigned long shrink_slab(struct shrink_control *shrink,
>                if (total_scan > max_pass * 2)
>                        total_scan = max_pass * 2;
>
> -               trace_mm_shrink_slab_start(shrinker, shrink, nr,
> +               trace_mm_shrink_slab_begin(shrinker, shrink, nr,
>                                        nr_pages_scanned, lru_pages,
>                                        max_pass, delta, total_scan);
>
> --
> 1.7.7.4
>
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