[RFC PATCH v1 1/4] mm/damon: Generic context creation for modules

[<gutierrez.asier@huawei-partners.com>]

From: Asier Gutierrez <gutierrez.asier@huawei-partners.com>

Damon_modules_new_paddr_ctx_target. This works  only for physical contexts.
In case of virtual addresses, we should  duplicate the code.

It is more elegant to have a generic version of new context creation which
receives the mode as a parameter.

Signed-off-by: Asier Gutierrez <gutierrez.asier@huawei-partners.com>
Co-developed-by: Anatoly Stepanov <stepanov.anatoly@huawei.com>
---
 mm/damon/lru_sort.c       | 6 ++++--
 mm/damon/modules-common.c | 7 ++++---
 mm/damon/modules-common.h | 5 +++--
 mm/damon/reclaim.c        | 5 +++--
 4 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/mm/damon/lru_sort.c b/mm/damon/lru_sort.c
index 49b4bc294f4e..ac34b02dace8 100644
--- a/mm/damon/lru_sort.c
+++ b/mm/damon/lru_sort.c
@@ -201,7 +201,8 @@ static int damon_lru_sort_apply_parameters(void)
 	unsigned int hot_thres, cold_thres;
 	int err;
 
-	err = damon_modules_new_paddr_ctx_target(&param_ctx, &param_target);
+	err = damon_modules_new_ctx_target(&param_ctx, &param_target,
+				DAMON_OPS_PADDR);
 	if (err)
 		return err;
 
@@ -375,7 +376,8 @@ static int __init damon_lru_sort_init(void)
 		err = -ENOMEM;
 		goto out;
 	}
-	err = damon_modules_new_paddr_ctx_target(&ctx, &target);
+	err = damon_modules_new_ctx_target(&ctx, &target,
+				DAMON_OPS_PADDR);
 	if (err)
 		goto out;
 
diff --git a/mm/damon/modules-common.c b/mm/damon/modules-common.c
index 86d58f8c4f63..5ba24e0ad9a1 100644
--- a/mm/damon/modules-common.c
+++ b/mm/damon/modules-common.c
@@ -14,8 +14,9 @@
  * @ctxp:	Pointer to save the point to the newly created context
  * @targetp:	Pointer to save the point to the newly created target
  */
-int damon_modules_new_paddr_ctx_target(struct damon_ctx **ctxp,
-		struct damon_target **targetp)
+int damon_modules_new_ctx_target(struct damon_ctx **ctxp,
+				struct damon_target **targetp,
+				enum damon_ops_id mode)
 {
 	struct damon_ctx *ctx;
 	struct damon_target *target;
@@ -24,7 +25,7 @@ int damon_modules_new_paddr_ctx_target(struct damon_ctx **ctxp,
 	if (!ctx)
 		return -ENOMEM;
 
-	if (damon_select_ops(ctx, DAMON_OPS_PADDR)) {
+	if (damon_select_ops(ctx, mode)) {
 		damon_destroy_ctx(ctx);
 		return -EINVAL;
 	}
diff --git a/mm/damon/modules-common.h b/mm/damon/modules-common.h
index f103ad556368..87d8058d7d85 100644
--- a/mm/damon/modules-common.h
+++ b/mm/damon/modules-common.h
@@ -45,5 +45,6 @@
 	module_param_named(nr_##qt_exceed_name, stat.qt_exceeds, ulong,	\
 			0400);
 
-int damon_modules_new_paddr_ctx_target(struct damon_ctx **ctxp,
-		struct damon_target **targetp);
+int damon_modules_new_ctx_target(struct damon_ctx **ctxp,
+				struct damon_target **targetp,
+				enum damon_ops_id mode);
diff --git a/mm/damon/reclaim.c b/mm/damon/reclaim.c
index 36a582e09eae..b64fb810e096 100644
--- a/mm/damon/reclaim.c
+++ b/mm/damon/reclaim.c
@@ -197,7 +197,8 @@ static int damon_reclaim_apply_parameters(void)
 	struct damos_filter *filter;
 	int err;
 
-	err = damon_modules_new_paddr_ctx_target(&param_ctx, &param_target);
+	err = damon_modules_new_ctx_target(&param_ctx, &param_target,
+				DAMON_OPS_PADDR);
 	if (err)
 		return err;
 
@@ -379,7 +380,7 @@ static int __init damon_reclaim_init(void)
 		err = -ENOMEM;
 		goto out;
 	}
-	err = damon_modules_new_paddr_ctx_target(&ctx, &target);
+	err = damon_modules_new_ctx_target(&ctx, &target, DAMON_OPS_PADDR);
 	if (err)
 		goto out;
 
-- 
2.43.0