Man page 9 : debugfs_create_u32_array

debugfs_create_u32_array - create a debugfs file that is used to read u32 array.

struct dentry * debugfs_create_u32_array(const char *  name , umode_t  mode , struct dentry *  parent , u32 *  array , u32  elements );

name
    a pointer to a string containing the name of the file to create.

mode
    the permission that the file should have.

parent
    a pointer to the parent dentry for this file. This should be a directory dentry if set. If this parameter is NULL, then the file will be created in the root of the debugfs filesystem.

array
    u32 array that provides data.

elements
    total number of elements in the array.

This function creates a file in debugfs with the given name that exports array as data. If the mode variable is so set it can be read from. Writing is not supported. Seek within the file is also not supported. Once array is created its size can not be changed.

The function returns a pointer to dentry on success. If debugfs is not enabled in the kernel, the value -ENODEV will be returned.