1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2023-2025 Christoph Hellwig. 4 * Copyright (c) 2024-2025, Western Digital Corporation or its affiliates. 5 */ 6 #include "xfs_platform.h" 7 #include "xfs_shared.h" 8 #include "xfs_format.h" 9 #include "xfs_trans_resv.h" 10 #include "xfs_mount.h" 11 #include "xfs_inode.h" 12 #include "xfs_rtgroup.h" 13 #include "xfs_zone_alloc.h" 14 #include "xfs_zone_priv.h" 15 16 static const char xfs_write_hint_shorthand[6][16] = { 17 "NOT_SET", "NONE", "SHORT", "MEDIUM", "LONG", "EXTREME"}; 18 19 static inline const char * 20 xfs_write_hint_to_str( 21 uint8_t write_hint) 22 { 23 if (write_hint > WRITE_LIFE_EXTREME) 24 return "UNKNOWN"; 25 return xfs_write_hint_shorthand[write_hint]; 26 } 27 28 static void 29 xfs_show_open_zone( 30 struct seq_file *m, 31 struct xfs_open_zone *oz) 32 { 33 seq_printf(m, "\t zone %d, wp %u, written %u, used %u, hint %s %s\n", 34 rtg_rgno(oz->oz_rtg), 35 oz->oz_allocated, oz->oz_written, 36 rtg_rmap(oz->oz_rtg)->i_used_blocks, 37 xfs_write_hint_to_str(oz->oz_write_hint), 38 oz->oz_is_gc ? "(GC)" : ""); 39 } 40 41 static void 42 xfs_show_full_zone_used_distribution( 43 struct seq_file *m, 44 struct xfs_mount *mp) 45 { 46 struct xfs_zone_info *zi = mp->m_zone_info; 47 unsigned int reclaimable = 0, full, i; 48 49 spin_lock(&zi->zi_used_buckets_lock); 50 for (i = 0; i < XFS_ZONE_USED_BUCKETS; i++) { 51 unsigned int entries = zi->zi_used_bucket_entries[i]; 52 53 seq_printf(m, "\t %2u..%2u%%: %u\n", 54 i * (100 / XFS_ZONE_USED_BUCKETS), 55 (i + 1) * (100 / XFS_ZONE_USED_BUCKETS) - 1, 56 entries); 57 reclaimable += entries; 58 } 59 spin_unlock(&zi->zi_used_buckets_lock); 60 61 full = mp->m_sb.sb_rgcount; 62 full -= zi->zi_nr_open_zones; 63 full -= zi->zi_nr_open_gc_zones; 64 full -= atomic_read(&zi->zi_nr_free_zones); 65 full -= reclaimable; 66 67 seq_printf(m, "\t 100%%: %u\n", full); 68 } 69 70 void 71 xfs_zoned_show_stats( 72 struct seq_file *m, 73 struct xfs_mount *mp) 74 { 75 struct xfs_zone_info *zi = mp->m_zone_info; 76 struct xfs_open_zone *oz; 77 78 seq_puts(m, "\n"); 79 80 seq_printf(m, "\tuser free RT blocks: %lld\n", 81 xfs_sum_freecounter(mp, XC_FREE_RTEXTENTS)); 82 seq_printf(m, "\treserved free RT blocks: %lld\n", 83 mp->m_free[XC_FREE_RTEXTENTS].res_avail); 84 seq_printf(m, "\tuser available RT blocks: %lld\n", 85 xfs_sum_freecounter(mp, XC_FREE_RTAVAILABLE)); 86 seq_printf(m, "\treserved available RT blocks: %lld\n", 87 mp->m_free[XC_FREE_RTAVAILABLE].res_avail); 88 seq_printf(m, "\tRT reservations required: %d\n", 89 !list_empty_careful(&zi->zi_reclaim_reservations)); 90 seq_printf(m, "\tRT GC required: %d\n", 91 xfs_zoned_need_gc(mp)); 92 93 seq_printf(m, "\ttotal number of zones: %u\n", 94 mp->m_sb.sb_rgcount); 95 seq_printf(m, "\tfree zones: %d\n", atomic_read(&zi->zi_nr_free_zones)); 96 97 spin_lock(&zi->zi_open_zones_lock); 98 seq_printf(m, "\tmax open zones: %u\n", 99 mp->m_max_open_zones); 100 seq_printf(m, "\tnr open zones: %u\n", 101 zi->zi_nr_open_zones); 102 seq_printf(m, "\tnr open GC zones: %u\n", 103 zi->zi_nr_open_gc_zones); 104 seq_puts(m, "\topen zones:\n"); 105 list_for_each_entry(oz, &zi->zi_open_zones, oz_entry) 106 xfs_show_open_zone(m, oz); 107 spin_unlock(&zi->zi_open_zones_lock); 108 seq_puts(m, "\tused blocks distribution (fully written zones):\n"); 109 xfs_show_full_zone_used_distribution(m, mp); 110 } 111