[trace:trace/rfc/eventfs 28/28] fs/tracefs/event_inode.c:236:6: warning: unused variable 'idx'

[trace:trace/rfc/eventfs 28/28] fs/tracefs/event_inode.c:236:6: warning: unused variable 'idx'

[kernel test robot]

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace trace/rfc/eventfs
head:   1dc48374bb8ad8aec6d7244267f9b36e0512d3bb
commit: 1dc48374bb8ad8aec6d7244267f9b36e0512d3bb [28/28] tracefs: Add RCU and global mutex for eventfs
config: i386-randconfig-i012-20230710 (https://download.01.org/0day-ci/archive/20230711/202307111443.bdoaMUxJ-lkp@intel.com/config)
compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project.git 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a)
reproduce: (https://download.01.org/0day-ci/archive/20230711/202307111443.bdoaMUxJ-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202307111443.bdoaMUxJ-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> fs/tracefs/event_inode.c:236:6: warning: unused variable 'idx' [-Wunused-variable]
           int idx;
               ^
   fs/tracefs/event_inode.c:108:23: warning: unused function 'eventfs_create_file' [-Wunused-function]
   static struct dentry *eventfs_create_file(const char *name, umode_t mode,
                         ^
   fs/tracefs/event_inode.c:184:23: warning: unused function 'eventfs_create_dir' [-Wunused-function]
   static struct dentry *eventfs_create_dir(const char *name, umode_t mode,
                         ^
   3 warnings generated.


vim +/idx +236 fs/tracefs/event_inode.c

   225	
   226	/**
   227	 * eventfs_post_create_dir - post create dir routine
   228	 * @ef: eventfs_file of recently created dir
   229	 *
   230	 * Files with-in eventfs dir should know dentry of parent dir
   231	 */
   232	static void eventfs_post_create_dir(struct eventfs_file *ef)
   233	{
   234		struct eventfs_file *ef_child;
   235		struct tracefs_inode *ti;
 > 236		int idx;
   237	
   238		/* srcu lock already held */
   239		/* fill parent-child relation */
   240		list_for_each_entry_srcu(ef_child, &ef->ei->e_top_files, list,
   241					 srcu_read_lock_held(&eventfs_srcu)) {
   242			ef_child->d_parent = ef->dentry;
   243		}
   244	
   245		ti = get_tracefs(ef->dentry->d_inode);
   246		ti->private = ef->ei;
   247	}
   248	

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