[linux-next:master 5016/10451] kernel/trace/trace.c:7534:37: error: 'last_boot_fops' defined but not used

[linux-next:master 5016/10451] kernel/trace/trace.c:7534:37: error: 'last_boot_fops' defined but not used

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   0b58e108042b0ed28a71cd7edf5175999955b233
commit: 7a1d1e4b9639ff08b2f42605c2950ae1ba4a43bf [5016/10451] tracing/ring-buffer: Add last_boot_info file to boot instance
config: x86_64-sof-customedconfig-atom-defconfig (https://download.01.org/0day-ci/archive/20240705/202407051402.LW9VtaLq-lkp@intel.com/config)
compiler: gcc-11 (Ubuntu 11.4.0-4ubuntu1) 11.4.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240705/202407051402.LW9VtaLq-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/202407051402.LW9VtaLq-lkp@intel.com/

All errors (new ones prefixed by >>):

>> kernel/trace/trace.c:7534:37: error: 'last_boot_fops' defined but not used [-Werror=unused-const-variable=]
    7534 | static const struct file_operations last_boot_fops = {
         |                                     ^~~~~~~~~~~~~~
   cc1: all warnings being treated as errors


vim +/last_boot_fops +7534 kernel/trace/trace.c

  7533	
> 7534	static const struct file_operations last_boot_fops = {
  7535		.open		= tracing_open_generic_tr,
  7536		.read		= tracing_last_boot_read,
  7537		.llseek		= generic_file_llseek,
  7538		.release	= tracing_release_generic_tr,
  7539	};
  7540	

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