tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   771a207d1ee9f38da8c0cee1412228f18b900bac
commit: 261187e66de362de931631fc481ac8b9118c36f5 [8857/9540] io_uring: pass in EPOLL_URING_WAKE for eventfd signaling and wakeups
config: csky-randconfig-r015-20221120
compiler: csky-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=261187e66de362de931631fc481ac8b9118c36f5
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 261187e66de362de931631fc481ac8b9118c36f5
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=csky SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   io_uring/io_uring.c: In function 'io_eventfd_ops':
>> io_uring/io_uring.c:498:17: error: implicit declaration of function 'eventfd_signal_mask'; did you mean 'eventfd_signal'? [-Werror=implicit-function-declaration]
     498 |                 eventfd_signal_mask(ev_fd->cq_ev_fd, 1, EPOLL_URING_WAKE);
         |                 ^~~~~~~~~~~~~~~~~~~
         |                 eventfd_signal
   io_uring/io_uring.c: In function '__io_submit_flush_completions':
   io_uring/io_uring.c:1338:40: warning: variable 'prev' set but not used [-Wunused-but-set-variable]
    1338 |         struct io_wq_work_node *node, *prev;
         |                                        ^~~~
   cc1: some warnings being treated as errors


vim +498 io_uring/io_uring.c

   490	
   491	
   492	static void io_eventfd_ops(struct rcu_head *rcu)
   493	{
   494		struct io_ev_fd *ev_fd = container_of(rcu, struct io_ev_fd, rcu);
   495		int ops = atomic_xchg(&ev_fd->ops, 0);
   496	
   497		if (ops & BIT(IO_EVENTFD_OP_SIGNAL_BIT))
 > 498			eventfd_signal_mask(ev_fd->cq_ev_fd, 1, EPOLL_URING_WAKE);
   499	
   500		/* IO_EVENTFD_OP_FREE_BIT may not be set here depending on callback
   501		 * ordering in a race but if references are 0 we know we have to free
   502		 * it regardless.
   503		 */
   504		if (atomic_dec_and_test(&ev_fd->refs)) {
   505			eventfd_ctx_put(ev_fd->cq_ev_fd);
   506			kfree(ev_fd);
   507		}
   508	}
   509	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp