diff mbox series

[v4,01/48] mm: move some shrinker-related function declarations to mm/internal.h

Message ID 20230807110936.21819-2-zhengqi.arch@bytedance.com
State New
Headers show
Series use refcount+RCU method to implement lockless slab shrink | expand

Commit Message

Qi Zheng Aug. 7, 2023, 11:08 a.m. UTC 
The following functions are only used inside the mm subsystem, so it's
better to move their declarations to the mm/internal.h file.

1. shrinker_debugfs_add()
2. shrinker_debugfs_detach()
3. shrinker_debugfs_remove()

Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
---
 include/linux/shrinker.h | 19 -------------------
 mm/internal.h            | 28 ++++++++++++++++++++++++++++
 2 files changed, 28 insertions(+), 19 deletions(-)

Comments

Muchun Song Aug. 15, 2023, 8:36 a.m. UTC | #1 
> On Aug 7, 2023, at 19:08, Qi Zheng <zhengqi.arch@bytedance.com> wrote:
> 
> The following functions are only used inside the mm subsystem, so it's
> better to move their declarations to the mm/internal.h file.
> 
> 1. shrinker_debugfs_add()
> 2. shrinker_debugfs_detach()
> 3. shrinker_debugfs_remove()
> 
> Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>

Reviewed-by: Muchun Song <songmuchun@bytedance.com>

One nit bellow.

[...]

> +
> +/*
> + * shrinker related functions
> + */

This is a multi-comment format. "/* shrinker related functions. */" is
the right one-line format of comment.

> +
> +#ifdef CONFIG_SHRINKER_DEBUG
> +extern int shrinker_debugfs_add(struct shrinker *shrinker);
> +extern struct dentry *shrinker_debugfs_detach(struct shrinker *shrinker,
> +      int *debugfs_id);
> +extern void shrinker_debugfs_remove(struct dentry *debugfs_entry,
> +    int debugfs_id);
> +#else /* CONFIG_SHRINKER_DEBUG */
> +static inline int shrinker_debugfs_add(struct shrinker *shrinker)
> +{
> +	return 0;
> +}
> +static inline struct dentry *shrinker_debugfs_detach(struct shrinker *shrinker,
> +     int *debugfs_id)
> +{
> +	*debugfs_id = -1;
> +	return NULL;
> +}
> +static inline void shrinker_debugfs_remove(struct dentry *debugfs_entry,
> +	int debugfs_id)
> +{
> +}
> +#endif /* CONFIG_SHRINKER_DEBUG */
> +
> #endif /* __MM_INTERNAL_H */
> -- 
> 2.30.2
>
Qi Zheng Aug. 15, 2023, 9:14 a.m. UTC | #2 
On 2023/8/15 16:36, Muchun Song wrote:
> 
> 
>> On Aug 7, 2023, at 19:08, Qi Zheng <zhengqi.arch@bytedance.com> wrote:
>>
>> The following functions are only used inside the mm subsystem, so it's
>> better to move their declarations to the mm/internal.h file.
>>
>> 1. shrinker_debugfs_add()
>> 2. shrinker_debugfs_detach()
>> 3. shrinker_debugfs_remove()
>>
>> Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
> 
> Reviewed-by: Muchun Song <songmuchun@bytedance.com>
> 
> One nit bellow.
> 
> [...]
> 
>> +
>> +/*
>> + * shrinker related functions
>> + */
> 
> This is a multi-comment format. "/* shrinker related functions. */" is
> the right one-line format of comment.

Will do.

Thanks,
Qi

> 
>> +
>> +#ifdef CONFIG_SHRINKER_DEBUG
>> +extern int shrinker_debugfs_add(struct shrinker *shrinker);
>> +extern struct dentry *shrinker_debugfs_detach(struct shrinker *shrinker,
>> +      int *debugfs_id);
>> +extern void shrinker_debugfs_remove(struct dentry *debugfs_entry,
>> +    int debugfs_id);
>> +#else /* CONFIG_SHRINKER_DEBUG */
>> +static inline int shrinker_debugfs_add(struct shrinker *shrinker)
>> +{
>> +	return 0;
>> +}
>> +static inline struct dentry *shrinker_debugfs_detach(struct shrinker *shrinker,
>> +     int *debugfs_id)
>> +{
>> +	*debugfs_id = -1;
>> +	return NULL;
>> +}
>> +static inline void shrinker_debugfs_remove(struct dentry *debugfs_entry,
>> +	int debugfs_id)
>> +{
>> +}
>> +#endif /* CONFIG_SHRINKER_DEBUG */
>> +
>> #endif /* __MM_INTERNAL_H */
>> -- 
>> 2.30.2
>>
>
diff mbox series

Patch

diff --git a/include/linux/shrinker.h b/include/linux/shrinker.h
index 224293b2dd06..8dc15aa37410 100644
--- a/include/linux/shrinker.h
+++ b/include/linux/shrinker.h
@@ -106,28 +106,9 @@  extern void free_prealloced_shrinker(struct shrinker *shrinker);
 extern void synchronize_shrinkers(void);
 
 #ifdef CONFIG_SHRINKER_DEBUG
-extern int shrinker_debugfs_add(struct shrinker *shrinker);
-extern struct dentry *shrinker_debugfs_detach(struct shrinker *shrinker,
-					      int *debugfs_id);
-extern void shrinker_debugfs_remove(struct dentry *debugfs_entry,
-				    int debugfs_id);
 extern int __printf(2, 3) shrinker_debugfs_rename(struct shrinker *shrinker,
 						  const char *fmt, ...);
 #else /* CONFIG_SHRINKER_DEBUG */
-static inline int shrinker_debugfs_add(struct shrinker *shrinker)
-{
-	return 0;
-}
-static inline struct dentry *shrinker_debugfs_detach(struct shrinker *shrinker,
-						     int *debugfs_id)
-{
-	*debugfs_id = -1;
-	return NULL;
-}
-static inline void shrinker_debugfs_remove(struct dentry *debugfs_entry,
-					   int debugfs_id)
-{
-}
 static inline __printf(2, 3)
 int shrinker_debugfs_rename(struct shrinker *shrinker, const char *fmt, ...)
 {
diff --git a/mm/internal.h b/mm/internal.h
index 154da4f0d557..6f21926393af 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -1143,4 +1143,32 @@  struct vma_prepare {
 	struct vm_area_struct *remove;
 	struct vm_area_struct *remove2;
 };
+
+/*
+ * shrinker related functions
+ */
+
+#ifdef CONFIG_SHRINKER_DEBUG
+extern int shrinker_debugfs_add(struct shrinker *shrinker);
+extern struct dentry *shrinker_debugfs_detach(struct shrinker *shrinker,
+					      int *debugfs_id);
+extern void shrinker_debugfs_remove(struct dentry *debugfs_entry,
+				    int debugfs_id);
+#else /* CONFIG_SHRINKER_DEBUG */
+static inline int shrinker_debugfs_add(struct shrinker *shrinker)
+{
+	return 0;
+}
+static inline struct dentry *shrinker_debugfs_detach(struct shrinker *shrinker,
+						     int *debugfs_id)
+{
+	*debugfs_id = -1;
+	return NULL;
+}
+static inline void shrinker_debugfs_remove(struct dentry *debugfs_entry,
+					   int debugfs_id)
+{
+}
+#endif /* CONFIG_SHRINKER_DEBUG */
+
 #endif	/* __MM_INTERNAL_H */