tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 0fa9557473e665984ed5e97515969035324b2ec5 commit: 43bbefc53356009d3603faa2c6e6a2858f724e4d [3316/3316] xsched: Add XCU control group implementation and its backend in xsched CFS config: x86_64-buildonly-randconfig-002-20251125 (https://download.01.org/0day-ci/archive/20251126/202511260440.XtGIX1Qz-lkp@i...) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251126/202511260440.XtGIX1Qz-lkp@i...) 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/202511260440.XtGIX1Qz-lkp@intel.com/ All warnings (new ones prefixed by >>):

...

kernel/xsched/cgroup.c:368:6: warning: no previous prototype for 'xcu_move_task' [-Wmissing-prototypes] 368 | void xcu_move_task(struct task_struct *task, struct xsched_group *old_xcg, | ^~~~~~~~~~~~~ -- kernel/xsched/cfs.c:56: warning: Function parameter or member 'xse_cfs' not described in 'xs_cfs_rq_update' kernel/xsched/cfs.c:56: warning: Function parameter or member 'new_xrt' not described in 'xs_cfs_rq_update' kernel/xsched/cfs.c:103: warning: Function parameter or member 'xg' not described in 'xg_update' kernel/xsched/cfs.c:103: warning: Function parameter or member 'task_delta' not described in 'xg_update' kernel/xsched/cfs.c:103: warning: Excess function parameter 'gxcu' description in 'xg_update' -- kernel/xsched/cgroup.c:46: warning: Cannot understand * @brief Initialize the core components of an xsched_group. on line 46 - I thought it was a doc line

vim +/xcu_move_task +368 kernel/xsched/cgroup.c 367

368 void xcu_move_task(struct task_struct *task, struct xsched_group *old_xcg, 369 struct xsched_group *new_xcg) 370 { 371 struct xsched_entity *xse, *tmp; 372 struct xsched_cu *xcu; 373 374 spin_lock(&old_xcg->lock); 375 list_for_each_entry_safe(xse, tmp, &old_xcg->members, group_node) { 376 if (xse->owner_pid != task_pid_nr(task)) 377 continue; 378 379 xcu = xse->xcu; 380 381 if (old_xcg != xse->parent_grp) { 382 WARN_ON(old_xcg != xse->parent_grp); 383 return; 384 } 385 386 /* delete from the old_xcg */ 387 list_del(&xse->group_node); 388 389 mutex_lock(&xcu->xcu_lock); 390 /* dequeue from the current runqueue */ 391 dequeue_ctx(xse, xcu); 392 /* attach to the new_xcg */ 393 xsched_group_xse_attach(new_xcg, xse); 394 /* enqueue to the runqueue in new_xcg */ 395 enqueue_ctx(xse, xcu); 396 mutex_unlock(&xcu->xcu_lock); 397 } 398 spin_unlock(&old_xcg->lock); 399 } 400

-- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki