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

DAMON_RECLAIM uses damon_callback for periodically reading and writing
DAMON internal data and parameters.  Use its alternative, damon_call()
repeat mode.

Link: https://lkml.kernel.org/r/20250712195016.151108-5-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/reclaim.c b/mm/damon/reclaim.c
index 0fe8996328b8678f454c02d00f2988acc4ed97ee..3c71b4596676753a35d322debddb154172377752 100644 (file)
--- a/mm/damon/reclaim.c
+++ b/mm/damon/reclaim.c
@@ -238,6 +238,35 @@ out:
        return err;
 }
 
+static int damon_reclaim_handle_commit_inputs(void)
+{
+       int err;
+
+       if (!commit_inputs)
+               return 0;
+
+       err = damon_reclaim_apply_parameters();
+       commit_inputs = false;
+       return err;
+}
+
+static int damon_reclaim_damon_call_fn(void *arg)
+{
+       struct damon_ctx *c = arg;
+       struct damos *s;
+
+       /* update the stats parameter */
+       damon_for_each_scheme(s, c)
+               damon_reclaim_stat = s->stat;
+
+       return damon_reclaim_handle_commit_inputs();
+}
+
+static struct damon_call_control call_control = {
+       .fn = damon_reclaim_damon_call_fn,
+       .repeat = true,
+};
+
 static int damon_reclaim_turn(bool on)
 {
        int err;
@@ -257,7 +286,7 @@ static int damon_reclaim_turn(bool on)
        if (err)
                return err;
        kdamond_pid = ctx->kdamond->pid;
-       return 0;
+       return damon_call(ctx, &call_control);
 }
 
 static int damon_reclaim_enabled_store(const char *val,
@@ -296,34 +325,6 @@ module_param_cb(enabled, &enabled_param_ops, &enabled, 0600);
 MODULE_PARM_DESC(enabled,
        "Enable or disable DAMON_RECLAIM (default: disabled)");
 
-static int damon_reclaim_handle_commit_inputs(void)
-{
-       int err;
-
-       if (!commit_inputs)
-               return 0;
-
-       err = damon_reclaim_apply_parameters();
-       commit_inputs = false;
-       return err;
-}
-
-static int damon_reclaim_after_aggregation(struct damon_ctx *c)
-{
-       struct damos *s;
-
-       /* update the stats parameter */
-       damon_for_each_scheme(s, c)
-               damon_reclaim_stat = s->stat;
-
-       return damon_reclaim_handle_commit_inputs();
-}
-
-static int damon_reclaim_after_wmarks_check(struct damon_ctx *c)
-{
-       return damon_reclaim_handle_commit_inputs();
-}
-
 static int __init damon_reclaim_init(void)
 {
        int err = damon_modules_new_paddr_ctx_target(&ctx, &target);
@@ -331,8 +332,7 @@ static int __init damon_reclaim_init(void)
        if (err)
                goto out;
 
-       ctx->callback.after_wmarks_check = damon_reclaim_after_wmarks_check;
-       ctx->callback.after_aggregation = damon_reclaim_after_aggregation;
+       call_control.data = ctx;
 
        /* 'enabled' has set before this function, probably via command line */
        if (enabled)