linux-kernel - [PATCH 1/3] mm/damon/core: export symbols for supporting loadable modules

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Message-Id: <20231205022858.1540-2-sj@kernel.org>
Date:   Tue,  5 Dec 2023 02:28:56 +0000
From:   SeongJae Park <sj@...nel.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     SeongJae Park <sj@...nel.org>, damon@...ts.linux.dev,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] mm/damon/core: export symbols for supporting loadable modules

Expose minimum DAMON core symbols for supporting use of basic
functionality from loadable modules.  Followup commits will add sample
loadable modules that use the exported symbols.

Signed-off-by: SeongJae Park <sj@...nel.org>
---
 mm/damon/core.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/mm/damon/core.c b/mm/damon/core.c
index f91715a58dc7..8a5c3e905738 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -111,6 +111,7 @@ int damon_select_ops(struct damon_ctx *ctx, enum damon_ops_id id)
 	mutex_unlock(&damon_ops_lock);
 	return err;
 }
+EXPORT_SYMBOL(damon_select_ops);
 
 /*
  * Construct a damon_region struct
@@ -343,6 +344,7 @@ struct damos *damon_new_scheme(struct damos_access_pattern *pattern,
 
 	return scheme;
 }
+EXPORT_SYMBOL(damon_new_scheme);
 
 static void damos_set_next_apply_sis(struct damos *s, struct damon_ctx *ctx)
 {
@@ -380,6 +382,7 @@ void damon_destroy_scheme(struct damos *s)
 	damon_del_scheme(s);
 	damon_free_scheme(s);
 }
+EXPORT_SYMBOL(damon_destroy_scheme);
 
 /*
  * Construct a damon_target struct
@@ -401,11 +404,13 @@ struct damon_target *damon_new_target(void)
 
 	return t;
 }
+EXPORT_SYMBOL(damon_new_target);
 
 void damon_add_target(struct damon_ctx *ctx, struct damon_target *t)
 {
 	list_add_tail(&t->list, &ctx->adaptive_targets);
 }
+EXPORT_SYMBOL(damon_add_target);
 
 bool damon_targets_empty(struct damon_ctx *ctx)
 {
@@ -464,6 +469,7 @@ struct damon_ctx *damon_new_ctx(void)
 
 	return ctx;
 }
+EXPORT_SYMBOL(damon_new_ctx);
 
 static void damon_destroy_targets(struct damon_ctx *ctx)
 {
@@ -489,6 +495,7 @@ void damon_destroy_ctx(struct damon_ctx *ctx)
 
 	kfree(ctx);
 }
+EXPORT_SYMBOL(damon_destroy_ctx);
 
 static unsigned int damon_age_for_new_attrs(unsigned int age,
 		struct damon_attrs *old_attrs, struct damon_attrs *new_attrs)
@@ -616,6 +623,7 @@ void damon_set_schemes(struct damon_ctx *ctx, struct damos **schemes,
 	for (i = 0; i < nr_schemes; i++)
 		damon_add_scheme(ctx, schemes[i]);
 }
+EXPORT_SYMBOL(damon_set_schemes);
 
 /**
  * damon_nr_running_ctxs() - Return number of currently running contexts.
@@ -719,6 +727,7 @@ int damon_start(struct damon_ctx **ctxs, int nr_ctxs, bool exclusive)
 
 	return err;
 }
+EXPORT_SYMBOL(damon_start);
 
 /*
  * __damon_stop() - Stops monitoring of a given context.
@@ -762,6 +771,7 @@ int damon_stop(struct damon_ctx **ctxs, int nr_ctxs)
 	}
 	return err;
 }
+EXPORT_SYMBOL(damon_stop);
 
 /*
  * Reset the aggregated monitoring results ('nr_accesses' of each region).
-- 
2.34.1