[PATCH 3/9] mm/damon/core: use nr_accesses_bp as a source of damos_before_apply tracepoint

From: SeongJae Park
Date: Fri Sep 15 2023 - 22:10:49 EST


damos_before_apply tracepoint is exposing access rate of DAMON regions
using nr_accesses field of regions, which was actually used by DAMOS in
the past. However, it has changed to use nr_accesses_bp instead.
Update the tracepoint to expose the value that DAMOS is really using.

Note that it doesn't expose the value as is in the basis point, but
after converting it to the natural number by dividing it by 10,000.
Therefore this change doesn't make user-visible behavioral differences.

Signed-off-by: SeongJae Park <sj@xxxxxxxxxx>
---
include/trace/events/damon.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/trace/events/damon.h b/include/trace/events/damon.h
index 19930bb7af9a..23200aabccac 100644
--- a/include/trace/events/damon.h
+++ b/include/trace/events/damon.h
@@ -36,7 +36,7 @@ TRACE_EVENT_CONDITION(damos_before_apply,
__entry->target_idx = target_idx;
__entry->start = r->ar.start;
__entry->end = r->ar.end;
- __entry->nr_accesses = r->nr_accesses;
+ __entry->nr_accesses = r->nr_accesses_bp / 10000;
__entry->age = r->age;
__entry->nr_regions = nr_regions;
),
--
2.25.1