diff options
| author | SeongJae Park <sj@kernel.org> | 2026-05-18 16:41:06 -0700 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-06-02 15:22:29 -0700 |
| commit | b9b7bad279de29294c4d3314fe90fca345c38ea6 (patch) | |
| tree | 233de6f64e01794b5467721230d6ec0e19a1667e /mm | |
| parent | 5b0de1bc3325c34e341fe0f5314292c57b4616b9 (diff) | |
mm/damon: trace probe_hits
Introduce a new tracepoint for exposing the per-region per-probe positive
sample count via tracefs.
Link: https://lore.kernel.org/20260518234119.97569-19-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/damon/core.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/mm/damon/core.c b/mm/damon/core.c index 500e8b08d441..903fd6fc9789 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -1905,6 +1905,13 @@ static void kdamond_reset_aggregated(struct damon_ctx *c) { struct damon_target *t; unsigned int ti = 0; /* target's index */ + unsigned int nr_probes = 0; + struct damon_probe *probe; + + if (trace_damon_region_aggregated_enabled()) { + damon_for_each_probe(probe, c) + nr_probes++; + } damon_for_each_target(t, c) { struct damon_region *r; @@ -1913,6 +1920,8 @@ static void kdamond_reset_aggregated(struct damon_ctx *c) int i; trace_damon_aggregated(ti, r, damon_nr_regions(t)); + trace_damon_region_aggregated(ti, r, + damon_nr_regions(t), nr_probes); damon_warn_fix_nr_accesses_corruption(r); r->last_nr_accesses = r->nr_accesses; r->nr_accesses = 0; |