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[RFC,3/8] mm/damon/core: expose nr_accesses_bp from damos_before_apply tracepoint

Message ID 20230910034048.59191-4-sj@kernel.org (mailing list archive)
State New
Headers show
Series mm/damon: implement DAMOS apply intervals | expand

Commit Message

SeongJae Park Sept. 10, 2023, 3:40 a.m. UTC 
damos_before_apply tracepoint is exposing access rate of DAMON regions
using nr_accesses, 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.  That's for avoiding
confuses for old users.

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

diff --git a/include/trace/events/damon.h b/include/trace/events/damon.h
index 9e7b39495b05..6f98198c0104 100644
--- a/include/trace/events/damon.h
+++ b/include/trace/events/damon.h
@@ -34,7 +34,7 @@  TRACE_EVENT(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;
 	),