mm: change mm_vmscan_lru_shrink_inactive() proto types

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: Nyalin wang <yalin.wang2010@gmail.com>
Reviewed-by: NSteven Rostedt <rostedt@goodmis.org>
Acked-by: NVlastimil Babka <vbabka@suse.cz>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

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_to_nid(zone);
+		__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",

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;
 }