Introduce a new tracepoint for exposing the per-region per-probe positive sample count via tracefs.
Signed-off-by: SeongJae Park <[email protected]> --- include/trace/events/damon.h | 41 ++++++++++++++++++++++++++++++++++++ mm/damon/core.c | 1 + 2 files changed, 42 insertions(+) diff --git a/include/trace/events/damon.h b/include/trace/events/damon.h index 7e25f4469b81b..121d7bc3a2c27 100644 --- a/include/trace/events/damon.h +++ b/include/trace/events/damon.h @@ -130,6 +130,47 @@ TRACE_EVENT(damon_monitor_intervals_tune, TP_printk("sample_us=%lu", __entry->sample_us) ); +TRACE_EVENT(damon_aggregated_v2, + + TP_PROTO(unsigned int target_id, struct damon_region *r, + unsigned int nr_regions), + + TP_ARGS(target_id, r, nr_regions), + + TP_STRUCT__entry( + __field(unsigned long, target_id) + __field(unsigned int, nr_regions) + __field(unsigned long, start) + __field(unsigned long, end) + __field(unsigned int, nr_accesses) + __field(unsigned int, age) + __field(unsigned char, probe_hit0) + __field(unsigned char, probe_hit1) + __field(unsigned char, probe_hit2) + __field(unsigned char, probe_hit3) + ), + + TP_fast_assign( + __entry->target_id = target_id; + __entry->nr_regions = nr_regions; + __entry->start = r->ar.start; + __entry->end = r->ar.end; + __entry->nr_accesses = r->nr_accesses; + __entry->age = r->age; + __entry->probe_hit0 = r->probe_hits[0]; + __entry->probe_hit1 = r->probe_hits[1]; + __entry->probe_hit2 = r->probe_hits[2]; + __entry->probe_hit3 = r->probe_hits[3]; + ), + + TP_printk("target_id=%lu nr_regions=%u %lu-%lu: %u %u %hhu %hhu %hhu %hhu", + __entry->target_id, __entry->nr_regions, + __entry->start, __entry->end, + __entry->nr_accesses, __entry->age, + __entry->probe_hit0, __entry->probe_hit1, + __entry->probe_hit2, __entry->probe_hit3) +); + TRACE_EVENT(damon_aggregated, TP_PROTO(unsigned int target_id, struct damon_region *r, diff --git a/mm/damon/core.c b/mm/damon/core.c index fe14971d72747..54834b74efef4 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -1924,6 +1924,7 @@ static void kdamond_reset_aggregated(struct damon_ctx *c) int i; trace_damon_aggregated(ti, r, damon_nr_regions(t)); + trace_damon_aggregated_v2(ti, r, damon_nr_regions(t)); damon_warn_fix_nr_accesses_corruption(r); r->last_nr_accesses = r->nr_accesses; r->nr_accesses = 0; -- 2.47.3
