Re: [PATCH] softirq: Provide a handshake for canceling tasklets via polling on PREEMPT_RT

[kernel test robot <lkp@intel.com>]

Hi Sebastian,

kernel test robot noticed the following build warnings:

[auto build test WARNING on linus/master]
[also build test WARNING on v6.17-rc1 next-20250813]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Sebastian-Andrzej-Siewior/softirq-Provide-a-handshake-for-canceling-tasklets-via-polling-on-PREEMPT_RT/20250812-224928
base:   linus/master
patch link:    https://lore.kernel.org/r/20250812143930.22RBn5BW%40linutronix.de
patch subject: [PATCH] softirq: Provide a handshake for canceling tasklets via polling on PREEMPT_RT
config: csky-randconfig-002-20250813 (https://download.01.org/0day-ci/archive/20250813/202508131652.C4118cYh-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 13.4.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250813/202508131652.C4118cYh-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/202508131652.C4118cYh-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> kernel/softirq.c:853:13: warning: 'tasklet_callback_cancel_wait_running' defined but not used [-Wunused-function]
     853 | static void tasklet_callback_cancel_wait_running(void) { }
         |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/tasklet_callback_cancel_wait_running +853 kernel/softirq.c

   850	
   851	static void tasklet_lock_callback(void) { }
   852	static void tasklet_unlock_callback(void) { }
 > 853	static void tasklet_callback_cancel_wait_running(void) { }
   854	static void tasklet_callback_sync_wait_running(void) { }
   855	

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