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mm-damon-sysfs-use-damon-core-api-damon_is_running.patch removed from -mm tree

merged mm-stable Andrew Morton 1 participant 1 message Jul 20, 2025

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The quilt patch titled
Subject: mm/damon/sysfs: use DAMON core API damon_is_running()
has been removed from the -mm tree. Its filename was
mm-damon-sysfs-use-damon-core-api-damon_is_running.patch

This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: SeongJae Park <[email protected]>
Subject: mm/damon/sysfs: use DAMON core API damon_is_running()
Date: Sat, 5 Jul 2025 10:49:58 -0700

DAMON core implements a static function to see if a given DAMON context is running. DAMON sysfs interface is implementing the same one on its own. Make the core function non-static and reuse it from the DAMON sysfs interface.

Link https://lkml.kernel.org/r/[email protected] open here
Signed-off-by SeongJae Park <[email protected]>
Signed-off-by Andrew Morton <[email protected]>

---

 include/linux/damon.h |    1 +
 mm/damon/core.c       |    8 +++++++-
 mm/damon/sysfs.c      |   14 ++------------
 3 files changed, 10 insertions(+), 13 deletions(-)
include/linux/damon.h renamed from include/linux/damon.h~mm-damon-sysfs-use-damon-core-api-damon_is_running +1 -0
@@ -934,6 +934,7 @@ static inline unsigned int damon_max_nr_
 
 int damon_start(struct damon_ctx **ctxs, int nr_ctxs, bool exclusive);
 int damon_stop(struct damon_ctx **ctxs, int nr_ctxs);
+bool damon_is_running(struct damon_ctx *ctx);
 
 int damon_call(struct damon_ctx *ctx, struct damon_call_control *control);
 int damos_walk(struct damon_ctx *ctx, struct damos_walk_control *control);
mm/damon/core.c renamed from mm/damon/core.c~mm-damon-sysfs-use-damon-core-api-damon_is_running +7 -1
@@ -1311,7 +1311,13 @@ int damon_stop(struct damon_ctx **ctxs,
 	return err;
 }
 
-static bool damon_is_running(struct damon_ctx *ctx)
+/**
+ * damon_is_running() - Returns if a given DAMON context is running.
+ * @ctx:	The DAMON context to see if running.
+ *
+ * Return: true if @ctx is running, false otherwise.
+ */
+bool damon_is_running(struct damon_ctx *ctx)
 {
 	bool running;
mm/damon/sysfs.c renamed from mm/damon/sysfs.c~mm-damon-sysfs-use-damon-core-api-damon_is_running +2 -12
@@ -1189,16 +1189,6 @@ static void damon_sysfs_kdamond_rm_dirs(
 	kobject_put(&kdamond->contexts->kobj);
 }
 
-static bool damon_sysfs_ctx_running(struct damon_ctx *ctx)
-{
-	bool running;
-
-	mutex_lock(&ctx->kdamond_lock);
-	running = ctx->kdamond != NULL;
-	mutex_unlock(&ctx->kdamond_lock);
-	return running;
-}
-
 /*
  * enum damon_sysfs_cmd - Commands for a specific kdamond.
  */

@@ -1275,7 +1265,7 @@ static ssize_t state_show(struct kobject
 	if (!ctx)
 		running = false;
 	else
-		running = damon_sysfs_ctx_running(ctx);
+		running = damon_is_running(ctx);
 
 	return sysfs_emit(buf, "%s\n", running ?
 			damon_sysfs_cmd_strs[DAMON_SYSFS_CMD_ON] :

@@ -1429,7 +1419,7 @@ static inline bool damon_sysfs_kdamond_r
 		struct damon_sysfs_kdamond *kdamond)
 {
 	return kdamond->damon_ctx &&
-		damon_sysfs_ctx_running(kdamond->damon_ctx);
+		damon_is_running(kdamond->damon_ctx);
 }
 
 static int damon_sysfs_apply_inputs(struct damon_ctx *ctx,

_

Patches currently in -mm which might be from [email protected] are

mm-damon-core-commit-damos_quota_goal-nid.patch mm-damon-sysfs-implement-refresh_ms-file-under-kdamond-directory.patch mm-damon-sysfs-implement-refresh_ms-file-internal-work.patch docs-admin-guide-mm-damon-usage-document-refresh_ms-file.patch docs-abi-damon-update-for-refresh_ms.patch