mm: compaction: add missing kcompactd wakeup trace event

Add missing kcompactd wakeup trace event for proactive compaction,
meanwhile use order = -1 and the highest zone index of the pgdat for the
kcompactd wakeup trace event by proactive compaction.

Link: https://lkml.kernel.org/r/cbf8097a2d8a1b6800991f2a21575550d3613ce6.1673342761.git.baolin.wang@linux.alibaba.com
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/compaction.c b/mm/compaction.c
index 62f6bb68c9cb3ec234d897d2f1b2b965f1f919d2..0fd6c81a78099e39e9a3a67154da0715d592af5b 100644 (file)
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -2730,6 +2730,8 @@ int compaction_proactiveness_sysctl_handler(struct ctl_table *table, int write,
                                continue;
 
                        pgdat->proactive_compact_trigger = true;
+                       trace_mm_compaction_wakeup_kcompactd(pgdat->node_id, -1,
+                                                            pgdat->nr_zones - 1);
                        wake_up_interruptible(&pgdat->kcompactd_wait);
                }
        }