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.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 *
xfs_write_hint_to_str(uint8_t write_hint)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
xfs_show_open_zone(struct seq_file * m,struct xfs_open_zone * oz)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\n",
34 rtg_rgno(oz->oz_rtg),
35 oz->oz_write_pointer, oz->oz_written,
36 rtg_rmap(oz->oz_rtg)->i_used_blocks,
37 xfs_write_hint_to_str(oz->oz_write_hint));
38 }
39
40 static void
xfs_show_full_zone_used_distribution(struct seq_file * m,struct xfs_mount * mp)41 xfs_show_full_zone_used_distribution(
42 struct seq_file *m,
43 struct xfs_mount *mp)
44 {
45 struct xfs_zone_info *zi = mp->m_zone_info;
46 unsigned int reclaimable = 0, full, i;
47
48 spin_lock(&zi->zi_used_buckets_lock);
49 for (i = 0; i < XFS_ZONE_USED_BUCKETS; i++) {
50 unsigned int entries = zi->zi_used_bucket_entries[i];
51
52 seq_printf(m, "\t %2u..%2u%%: %u\n",
53 i * (100 / XFS_ZONE_USED_BUCKETS),
54 (i + 1) * (100 / XFS_ZONE_USED_BUCKETS) - 1,
55 entries);
56 reclaimable += entries;
57 }
58 spin_unlock(&zi->zi_used_buckets_lock);
59
60 full = mp->m_sb.sb_rgcount;
61 if (zi->zi_open_gc_zone)
62 full--;
63 full -= zi->zi_nr_open_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
xfs_zoned_show_stats(struct seq_file * m,struct xfs_mount * mp)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, "\tfree zones: %d\n", atomic_read(&zi->zi_nr_free_zones));
94 seq_puts(m, "\topen zones:\n");
95 spin_lock(&zi->zi_open_zones_lock);
96 list_for_each_entry(oz, &zi->zi_open_zones, oz_entry)
97 xfs_show_open_zone(m, oz);
98 if (zi->zi_open_gc_zone) {
99 seq_puts(m, "\topen gc zone:\n");
100 xfs_show_open_zone(m, zi->zi_open_gc_zone);
101 }
102 spin_unlock(&zi->zi_open_zones_lock);
103 seq_puts(m, "\tused blocks distribution (fully written zones):\n");
104 xfs_show_full_zone_used_distribution(m, mp);
105 }
106