[PATCH] mm: change mm_vmscan_lru_shrink_inactive() proto types

[PATCH] mm: change mm_vmscan_lru_shrink_inactive() proto types

[yalin wang]

Move node_id zone_idx shrink flags into trace function,
so thay we don't need caculate these args if the trace is disabled,
and will make this function have less arguments.

Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
---
 include/trace/events/vmscan.h | 14 +++++++-------
 mm/vmscan.c                   |  7 ++-----
 2 files changed, 9 insertions(+), 12 deletions(-)

diff --git a/include/trace/events/vmscan.h b/include/trace/events/vmscan.h
index dae7836..f8d6b34 100644
--- a/include/trace/events/vmscan.h
+++ b/include/trace/events/vmscan.h
@@ -352,11 +352,11 @@ TRACE_EVENT(mm_vmscan_writepage,
 
 TRACE_EVENT(mm_vmscan_lru_shrink_inactive,
 
-	TP_PROTO(int nid, int zid,
-			unsigned long nr_scanned, unsigned long nr_reclaimed,
-			int priority, int reclaim_flags),
+	TP_PROTO(struct zone *zone,
+		unsigned long nr_scanned, unsigned long nr_reclaimed,
+		int priority, int file),
 
-	TP_ARGS(nid, zid, nr_scanned, nr_reclaimed, priority, reclaim_flags),
+	TP_ARGS(zone, nr_scanned, nr_reclaimed, priority, file),
 
 	TP_STRUCT__entry(
 		__field(int, nid)
@@ -368,12 +368,12 @@ TRACE_EVENT(mm_vmscan_lru_shrink_inactive,
 	),
 
 	TP_fast_assign(
-		__entry->nid = nid;
-		__entry->zid = zid;
+		__entry->nid = zone->zone_pgdat->node_id;
+		__entry->zid = zone_idx(zone);
 		__entry->nr_scanned = nr_scanned;
 		__entry->nr_reclaimed = nr_reclaimed;
 		__entry->priority = priority;
-		__entry->reclaim_flags = reclaim_flags;
+		__entry->reclaim_flags = trace_shrink_flags(file);
 	),
 
 	TP_printk("nid=%d zid=%d nr_scanned=%ld nr_reclaimed=%ld priority=%d flags=%s",
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 83cea53..bd2918e 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1691,11 +1691,8 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
 	    current_may_throttle())
 		wait_iff_congested(zone, BLK_RW_ASYNC, HZ/10);
 
-	trace_mm_vmscan_lru_shrink_inactive(zone->zone_pgdat->node_id,
-		zone_idx(zone),
-		nr_scanned, nr_reclaimed,
-		sc->priority,
-		trace_shrink_flags(file));
+	trace_mm_vmscan_lru_shrink_inactive(zone, nr_scanned, nr_reclaimed,
+			sc->priority, file);
 	return nr_reclaimed;
 }
 
-- 
1.9.1

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Re: [PATCH] mm: change mm_vmscan_lru_shrink_inactive() proto types

[Steven Rostedt]

On Thu, 12 Nov 2015 15:54:56 +0800
yalin wang <yalin.wang2010@gmail.com> wrote:

> Move node_id zone_idx shrink flags into trace function,
> so thay we don't need caculate these args if the trace is disabled,
> and will make this function have less arguments.
> 
> Signed-off-by: yalin wang <yalin.wang2010@gmail.com>

Reviewed-by: Steven Rostedt <rostedt@goodmis.org>

-- Steve

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Re: [PATCH] mm: change mm_vmscan_lru_shrink_inactive() proto types

[Vlastimil Babka]

On 11/12/2015 08:54 AM, yalin wang wrote:
> Move node_id zone_idx shrink flags into trace function,
> so thay we don't need caculate these args if the trace is disabled,
> and will make this function have less arguments.
>
> Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
> ---
>   include/trace/events/vmscan.h | 14 +++++++-------
>   mm/vmscan.c                   |  7 ++-----
>   2 files changed, 9 insertions(+), 12 deletions(-)
>
> diff --git a/include/trace/events/vmscan.h b/include/trace/events/vmscan.h
> index dae7836..f8d6b34 100644
> --- a/include/trace/events/vmscan.h
> +++ b/include/trace/events/vmscan.h
> @@ -352,11 +352,11 @@ TRACE_EVENT(mm_vmscan_writepage,
>
>   TRACE_EVENT(mm_vmscan_lru_shrink_inactive,
>
> -	TP_PROTO(int nid, int zid,
> -			unsigned long nr_scanned, unsigned long nr_reclaimed,
> -			int priority, int reclaim_flags),
> +	TP_PROTO(struct zone *zone,
> +		unsigned long nr_scanned, unsigned long nr_reclaimed,
> +		int priority, int file),
>
> -	TP_ARGS(nid, zid, nr_scanned, nr_reclaimed, priority, reclaim_flags),
> +	TP_ARGS(zone, nr_scanned, nr_reclaimed, priority, file),
>
>   	TP_STRUCT__entry(
>   		__field(int, nid)
> @@ -368,12 +368,12 @@ TRACE_EVENT(mm_vmscan_lru_shrink_inactive,
>   	),
>
>   	TP_fast_assign(
> -		__entry->nid = nid;
> -		__entry->zid = zid;
> +		__entry->nid = zone->zone_pgdat->node_id;

While at it, convert it to zone_to_nid()? It's not just encapsulation, 
but also one less pointer dereference.

Then you can add my Acked-by.

Thanks.

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Re: [PATCH] mm: change mm_vmscan_lru_shrink_inactive() proto types

[yalin wang]

> On Nov 13, 2015, at 21:16, Vlastimil Babka <vbabka@suse.cz> wrote:
> 
> zone_to_nid
make sense,
i will send V2 patch ,

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