mm/damon/stat: use damon_call() repeat mode instead of damon_callback

DAMON_STAT uses damon_callback for periodically reading DAMON internal
data.  Use its alternative, damon_call() repeat mode.

Link: https://lkml.kernel.org/r/20250712195016.151108-4-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/damon/stat.c b/mm/damon/stat.c
index b75af871627e8d39ad18a2a6ad984002cddd4245..87bcd8866d4b70cd455c487fd2819f1fb858ca07 100644 (file)
--- a/mm/damon/stat.c
+++ b/mm/damon/stat.c
@@ -122,8 +122,9 @@ static void damon_stat_set_idletime_percentiles(struct damon_ctx *c)
        kfree(sorted_regions);
 }
 
-static int damon_stat_after_aggregation(struct damon_ctx *c)
+static int damon_stat_damon_call_fn(void *data)
 {
+       struct damon_ctx *c = data;
        static unsigned long last_refresh_jiffies;
 
        /* avoid unnecessarily frequent stat update */
@@ -182,19 +183,29 @@ static struct damon_ctx *damon_stat_build_ctx(void)
        damon_add_target(ctx, target);
        if (damon_set_region_biggest_system_ram_default(target, &start, &end))
                goto free_out;
-       ctx->callback.after_aggregation = damon_stat_after_aggregation;
        return ctx;
 free_out:
        damon_destroy_ctx(ctx);
        return NULL;
 }
 
+static struct damon_call_control call_control = {
+       .fn = damon_stat_damon_call_fn,
+       .repeat = true,
+};
+
 static int damon_stat_start(void)
 {
+       int err;
+
        damon_stat_context = damon_stat_build_ctx();
        if (!damon_stat_context)
                return -ENOMEM;
-       return damon_start(&damon_stat_context, 1, true);
+       err = damon_start(&damon_stat_context, 1, true);
+       if (err)
+               return err;
+       call_control.data = damon_stat_context;
+       return damon_call(damon_stat_context, &call_control);
 }
 
 static void damon_stat_stop(void)