1DEBUGFS_CREATE_BOOL(9) The debugfs filesystem DEBUGFS_CREATE_BOOL(9)
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6 debugfs_create_bool - create a debugfs file that is used to read and
7 write a boolean value
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10 struct dentry * debugfs_create_bool(const char * name, mode_t mode,
11 struct dentry * parent,
12 u32 * value);
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15 name
16 a pointer to a string containing the name of the file to create.
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18 mode
19 the permission that the file should have
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21 parent
22 a pointer to the parent dentry for this file. This should be a
23 directory dentry if set. If this parameter is NULL, then the file
24 will be created in the root of the debugfs filesystem.
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26 value
27 a pointer to the variable that the file should read to and write
28 from.
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31 This function creates a file in debugfs with the given name that
32 contains the value of the variable value. If the mode variable is so
33 set, it can be read from, and written to.
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35 This function will return a pointer to a dentry if it succeeds. This
36 pointer must be passed to the debugfs_remove function when the file is
37 to be removed (no automatic cleanup happens if your module is unloaded,
38 you are responsible here.) If an error occurs, NULL will be returned.
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40 If debugfs is not enabled in the kernel, the value -ENODEV will be
41 returned. It is not wise to check for this value, but rather, check for
42 NULL or !NULL instead as to eliminate the need for #ifdef in the
43 calling code.
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46Kernel Hackers Manual 2.6. November 2011 DEBUGFS_CREATE_BOOL(9)