tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 62c97045b8f720c2eac807a5f38e26c9ed512371 commit: 5311c0a2eee34fd8f4e17382a5f653b95a940ca5 [6602/7397] mm/damon/paddr: introduce DAMOS_MIGRATE_COLD action for demotion config: um-randconfig-r071-20240623 (https://download.01.org/0day-ci/archive/20240625/202406251102.GE07hqfQ-lkp@xxxxxxxxx/config) compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project ad79a14c9e5ec4a369eed4adf567c22cc029863f) 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@xxxxxxxxx> | Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> | Closes: https://lore.kernel.org/r/202406251102.GE07hqfQ-lkp@xxxxxxxxx/ smatch warnings: mm/damon/paddr.c:360 __damon_pa_migrate_folio_list() error: uninitialized symbol 'nr_succeeded'. vim +/nr_succeeded +360 mm/damon/paddr.c 5311c0a2eee34f Honggyu Kim 2024-06-14 331 static unsigned int __damon_pa_migrate_folio_list( 5311c0a2eee34f Honggyu Kim 2024-06-14 332 struct list_head *migrate_folios, struct pglist_data *pgdat, 5311c0a2eee34f Honggyu Kim 2024-06-14 333 int target_nid) 5311c0a2eee34f Honggyu Kim 2024-06-14 334 { 5311c0a2eee34f Honggyu Kim 2024-06-14 335 unsigned int nr_succeeded; 5311c0a2eee34f Honggyu Kim 2024-06-14 336 nodemask_t allowed_mask = NODE_MASK_NONE; 5311c0a2eee34f Honggyu Kim 2024-06-14 337 struct migration_target_control mtc = { 5311c0a2eee34f Honggyu Kim 2024-06-14 338 /* 5311c0a2eee34f Honggyu Kim 2024-06-14 339 * Allocate from 'node', or fail quickly and quietly. 5311c0a2eee34f Honggyu Kim 2024-06-14 340 * When this happens, 'page' will likely just be discarded 5311c0a2eee34f Honggyu Kim 2024-06-14 341 * instead of migrated. 5311c0a2eee34f Honggyu Kim 2024-06-14 342 */ 5311c0a2eee34f Honggyu Kim 2024-06-14 343 .gfp_mask = (GFP_HIGHUSER_MOVABLE & ~__GFP_RECLAIM) | 5311c0a2eee34f Honggyu Kim 2024-06-14 344 __GFP_NOWARN | __GFP_NOMEMALLOC | GFP_NOWAIT, 5311c0a2eee34f Honggyu Kim 2024-06-14 345 .nid = target_nid, 5311c0a2eee34f Honggyu Kim 2024-06-14 346 .nmask = &allowed_mask 5311c0a2eee34f Honggyu Kim 2024-06-14 347 }; 5311c0a2eee34f Honggyu Kim 2024-06-14 348 5311c0a2eee34f Honggyu Kim 2024-06-14 349 if (pgdat->node_id == target_nid || target_nid == NUMA_NO_NODE) 5311c0a2eee34f Honggyu Kim 2024-06-14 350 return 0; 5311c0a2eee34f Honggyu Kim 2024-06-14 351 5311c0a2eee34f Honggyu Kim 2024-06-14 352 if (list_empty(migrate_folios)) 5311c0a2eee34f Honggyu Kim 2024-06-14 353 return 0; 5311c0a2eee34f Honggyu Kim 2024-06-14 354 5311c0a2eee34f Honggyu Kim 2024-06-14 355 /* Migration ignores all cpuset and mempolicy settings */ 5311c0a2eee34f Honggyu Kim 2024-06-14 356 migrate_pages(migrate_folios, alloc_migrate_folio, NULL, 5311c0a2eee34f Honggyu Kim 2024-06-14 357 (unsigned long)&mtc, MIGRATE_ASYNC, MR_DAMON, 5311c0a2eee34f Honggyu Kim 2024-06-14 358 &nr_succeeded); 5311c0a2eee34f Honggyu Kim 2024-06-14 359 5311c0a2eee34f Honggyu Kim 2024-06-14 @360 return nr_succeeded; This can be compiled with CONFIG_MIGRATION disabled so migrate_pages() is a no-op that returns -ENOSYS. 5311c0a2eee34f Honggyu Kim 2024-06-14 361 } -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
