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Diffstat (limited to 'include/linux/debugfs.h')
-rw-r--r--include/linux/debugfs.h49
1 files changed, 46 insertions, 3 deletions
diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index 981e53ab84e8..1438e2322d5c 100644
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -19,9 +19,11 @@
#include <linux/seq_file.h>
#include <linux/types.h>
+#include <linux/compiler.h>
struct device;
struct file_operations;
+struct srcu_struct;
struct debugfs_blob_wrapper {
void *data;
@@ -41,14 +43,16 @@ struct debugfs_regset32 {
extern struct dentry *arch_debugfs_dir;
-#if defined(CONFIG_DEBUG_FS)
+extern struct srcu_struct debugfs_srcu;
-/* declared over in file.c */
-extern const struct file_operations debugfs_file_operations;
+#if defined(CONFIG_DEBUG_FS)
struct dentry *debugfs_create_file(const char *name, umode_t mode,
struct dentry *parent, void *data,
const struct file_operations *fops);
+struct dentry *debugfs_create_file_unsafe(const char *name, umode_t mode,
+ struct dentry *parent, void *data,
+ const struct file_operations *fops);
struct dentry *debugfs_create_file_size(const char *name, umode_t mode,
struct dentry *parent, void *data,
@@ -68,6 +72,31 @@ struct dentry *debugfs_create_automount(const char *name,
void debugfs_remove(struct dentry *dentry);
void debugfs_remove_recursive(struct dentry *dentry);
+int debugfs_use_file_start(const struct dentry *dentry, int *srcu_idx)
+ __acquires(&debugfs_srcu);
+
+void debugfs_use_file_finish(int srcu_idx) __releases(&debugfs_srcu);
+
+ssize_t debugfs_attr_read(struct file *file, char __user *buf,
+ size_t len, loff_t *ppos);
+ssize_t debugfs_attr_write(struct file *file, const char __user *buf,
+ size_t len, loff_t *ppos);
+
+#define DEFINE_DEBUGFS_ATTRIBUTE(__fops, __get, __set, __fmt) \
+static int __fops ## _open(struct inode *inode, struct file *file) \
+{ \
+ __simple_attr_check_format(__fmt, 0ull); \
+ return simple_attr_open(inode, file, __get, __set, __fmt); \
+} \
+static const struct file_operations __fops = { \
+ .owner = THIS_MODULE, \
+ .open = __fops ## _open, \
+ .release = simple_attr_release, \
+ .read = debugfs_attr_read, \
+ .write = debugfs_attr_write, \
+ .llseek = generic_file_llseek, \
+}
+
struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,
struct dentry *new_dir, const char *new_name);
@@ -176,6 +205,20 @@ static inline void debugfs_remove(struct dentry *dentry)
static inline void debugfs_remove_recursive(struct dentry *dentry)
{ }
+static inline int debugfs_use_file_start(const struct dentry *dentry,
+ int *srcu_idx)
+ __acquires(&debugfs_srcu)
+{
+ return 0;
+}
+
+static inline void debugfs_use_file_finish(int srcu_idx)
+ __releases(&debugfs_srcu)
+{ }
+
+#define DEFINE_DEBUGFS_ATTRIBUTE(__fops, __get, __set, __fmt) \
+ static const struct file_operations __fops = { 0 }
+
static inline struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,
struct dentry *new_dir, char *new_name)
{