tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 26aff849438cebcd05f1a647390c4aa700d5c0f1 commit: 1bc545bff45ce9eefc176ccf663074462a209cb6 mm/vmscan: fix root proactive reclaim unthrottling unbalanced node date: 6 months ago config: csky-randconfig-r025-20230521 (https://download.01.org/0day-ci/archive/20231212/202312122050.SSKuN78K-lkp@xxxxxxxxx/config) compiler: csky-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231212/202312122050.SSKuN78K-lkp@xxxxxxxxx/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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202312122050.SSKuN78K-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): mm/vmscan.o: in function `should_continue_reclaim': >> mm/vmscan.c:6425:(.text+0xa14e): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table' mm/vmscan.c:6429:(.text+0xa164): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table' mm/vmscan.o: in function `arch_atomic_long_read': include/linux/atomic/atomic-long.h:541:(.text+0xa184): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table' mm/vmscan.o: in function `shrink_node': mm/vmscan.c:6599:(.text+0xa198): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table' mm/vmscan.c:6571:(.text+0xa1e0): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table' mm/vmscan.o: in function `generic_atomic_or': >> include/asm-generic/atomic.h:108:(.text+0xa236): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table' include/asm-generic/atomic.h:108:(.text+0xa240): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table' include/asm-generic/atomic.h:108:(.text+0xa24a): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table' mm/vmscan.o: in function `balance_pgdat': mm/vmscan.c:7376:(.text+0xa25c): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table' mm/vmscan.c:7385:(.text+0xa276): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table' mm/vmscan.o: in function `set_task_reclaim_state': mm/vmscan.c:512:(.text+0xa29e): additional relocation overflows omitted from the output pahole: .tmp_vmlinux.btf: Invalid argument .btf.vmlinux.bin.o: file not recognized: file format not recognized vim +6425 mm/vmscan.c 23b9da55c5b0fe Mel Gorman 2012-05-29 6385 3e7d344970673c Mel Gorman 2011-01-13 6386 /* 23b9da55c5b0fe Mel Gorman 2012-05-29 6387 * Reclaim/compaction is used for high-order allocation requests. It reclaims 23b9da55c5b0fe Mel Gorman 2012-05-29 6388 * order-0 pages before compacting the zone. should_continue_reclaim() returns 23b9da55c5b0fe Mel Gorman 2012-05-29 6389 * true if more pages should be reclaimed such that when the page allocator df3a45f9d8ee41 Qiwu Chen 2020-06-03 6390 * calls try_to_compact_pages() that it will have enough free pages to succeed. 23b9da55c5b0fe Mel Gorman 2012-05-29 6391 * It will give up earlier than that if there is difficulty reclaiming pages. 3e7d344970673c Mel Gorman 2011-01-13 6392 */ a9dd0a83104c01 Mel Gorman 2016-07-28 6393 static inline bool should_continue_reclaim(struct pglist_data *pgdat, 3e7d344970673c Mel Gorman 2011-01-13 6394 unsigned long nr_reclaimed, 3e7d344970673c Mel Gorman 2011-01-13 6395 struct scan_control *sc) 3e7d344970673c Mel Gorman 2011-01-13 6396 { 3e7d344970673c Mel Gorman 2011-01-13 6397 unsigned long pages_for_compaction; 3e7d344970673c Mel Gorman 2011-01-13 6398 unsigned long inactive_lru_pages; a9dd0a83104c01 Mel Gorman 2016-07-28 6399 int z; 3e7d344970673c Mel Gorman 2011-01-13 6400 3e7d344970673c Mel Gorman 2011-01-13 6401 /* If not in reclaim/compaction mode, stop */ 9e3b2f8cd340e1 Konstantin Khlebnikov 2012-05-29 6402 if (!in_reclaim_compaction(sc)) 3e7d344970673c Mel Gorman 2011-01-13 6403 return false; 3e7d344970673c Mel Gorman 2011-01-13 6404 3e7d344970673c Mel Gorman 2011-01-13 6405 /* 5ee04716c46ce5 Vlastimil Babka 2019-09-23 6406 * Stop if we failed to reclaim any pages from the last SWAP_CLUSTER_MAX 5ee04716c46ce5 Vlastimil Babka 2019-09-23 6407 * number of pages that were scanned. This will return to the caller 5ee04716c46ce5 Vlastimil Babka 2019-09-23 6408 * with the risk reclaim/compaction and the resulting allocation attempt 5ee04716c46ce5 Vlastimil Babka 2019-09-23 6409 * fails. In the past we have tried harder for __GFP_RETRY_MAYFAIL 5ee04716c46ce5 Vlastimil Babka 2019-09-23 6410 * allocations through requiring that the full LRU list has been scanned 5ee04716c46ce5 Vlastimil Babka 2019-09-23 6411 * first, by assuming that zero delta of sc->nr_scanned means full LRU 5ee04716c46ce5 Vlastimil Babka 2019-09-23 6412 * scan, but that approximation was wrong, and there were corner cases 5ee04716c46ce5 Vlastimil Babka 2019-09-23 6413 * where always a non-zero amount of pages were scanned. 2876592f231d43 Mel Gorman 2011-02-25 6414 */ 2876592f231d43 Mel Gorman 2011-02-25 6415 if (!nr_reclaimed) 2876592f231d43 Mel Gorman 2011-02-25 6416 return false; 3e7d344970673c Mel Gorman 2011-01-13 6417 3e7d344970673c Mel Gorman 2011-01-13 6418 /* If compaction would go ahead or the allocation would succeed, stop */ a9dd0a83104c01 Mel Gorman 2016-07-28 6419 for (z = 0; z <= sc->reclaim_idx; z++) { a9dd0a83104c01 Mel Gorman 2016-07-28 6420 struct zone *zone = &pgdat->node_zones[z]; 6aa303defb7454 Mel Gorman 2016-09-01 6421 if (!managed_zone(zone)) a9dd0a83104c01 Mel Gorman 2016-07-28 6422 continue; a9dd0a83104c01 Mel Gorman 2016-07-28 6423 e8606320e9af97 Johannes Weiner 2023-05-19 6424 /* Allocation can already succeed, nothing to do */ e8606320e9af97 Johannes Weiner 2023-05-19 @6425 if (zone_watermark_ok(zone, sc->order, min_wmark_pages(zone), e8606320e9af97 Johannes Weiner 2023-05-19 6426 sc->reclaim_idx, 0)) e8606320e9af97 Johannes Weiner 2023-05-19 6427 return false; e8606320e9af97 Johannes Weiner 2023-05-19 6428 3cf04937529020 Johannes Weiner 2023-06-02 6429 if (compaction_suitable(zone, sc->order, sc->reclaim_idx)) 3e7d344970673c Mel Gorman 2011-01-13 6430 return false; 3e7d344970673c Mel Gorman 2011-01-13 6431 } 1c6c15971e4709 Hillf Danton 2019-09-23 6432 1c6c15971e4709 Hillf Danton 2019-09-23 6433 /* 1c6c15971e4709 Hillf Danton 2019-09-23 6434 * If we have not reclaimed enough pages for compaction and the 1c6c15971e4709 Hillf Danton 2019-09-23 6435 * inactive lists are large enough, continue reclaiming 1c6c15971e4709 Hillf Danton 2019-09-23 6436 */ 1c6c15971e4709 Hillf Danton 2019-09-23 6437 pages_for_compaction = compact_gap(sc->order); 1c6c15971e4709 Hillf Danton 2019-09-23 6438 inactive_lru_pages = node_page_state(pgdat, NR_INACTIVE_FILE); a2a36488a61cef Keith Busch 2021-09-02 6439 if (can_reclaim_anon_pages(NULL, pgdat->node_id, sc)) 1c6c15971e4709 Hillf Danton 2019-09-23 6440 inactive_lru_pages += node_page_state(pgdat, NR_INACTIVE_ANON); 1c6c15971e4709 Hillf Danton 2019-09-23 6441 5ee04716c46ce5 Vlastimil Babka 2019-09-23 6442 return inactive_lru_pages > pages_for_compaction; a9dd0a83104c01 Mel Gorman 2016-07-28 6443 } 3e7d344970673c Mel Gorman 2011-01-13 6444 :::::: The code at line 6425 was first introduced by commit :::::: e8606320e9af9774fd879e71c940fc9e5fd9b901 mm: compaction: refactor __compaction_suitable() :::::: TO: Johannes Weiner <hannes@xxxxxxxxxxx> :::::: CC: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
