diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-01-21 14:01:12 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-01-21 14:01:12 -0800 |
commit | 35a4474b5c3dd4315f72bd53e87b97f128d9bb3d (patch) | |
tree | 072e5ac37cef1c04e80a1cd66d7cdb56be680fa6 /fs/bcachefs/sb-counters.c | |
parent | 4fbbed7872677b0a28ba8237169968171a61efbd (diff) | |
parent | 249f441f83c546281f1c175756c81fac332bb64c (diff) |
Merge tag 'bcachefs-2024-01-21' of https://evilpiepirate.org/git/bcachefs
Pull more bcachefs updates from Kent Overstreet:
"Some fixes, Some refactoring, some minor features:
- Assorted prep work for disk space accounting rewrite
- BTREE_TRIGGER_ATOMIC: after combining our trigger callbacks, this
makes our trigger context more explicit
- A few fixes to avoid excessive transaction restarts on
multithreaded workloads: fstests (in addition to ktest tests) are
now checking slowpath counters, and that's shaking out a few bugs
- Assorted tracepoint improvements
- Starting to break up bcachefs_format.h and move on disk types so
they're with the code they belong to; this will make room to start
documenting the on disk format better.
- A few minor fixes"
* tag 'bcachefs-2024-01-21' of https://evilpiepirate.org/git/bcachefs: (46 commits)
bcachefs: Improve inode_to_text()
bcachefs: logged_ops_format.h
bcachefs: reflink_format.h
bcachefs; extents_format.h
bcachefs: ec_format.h
bcachefs: subvolume_format.h
bcachefs: snapshot_format.h
bcachefs: alloc_background_format.h
bcachefs: xattr_format.h
bcachefs: dirent_format.h
bcachefs: inode_format.h
bcachefs; quota_format.h
bcachefs: sb-counters_format.h
bcachefs: counters.c -> sb-counters.c
bcachefs: comment bch_subvolume
bcachefs: bch_snapshot::btime
bcachefs: add missing __GFP_NOWARN
bcachefs: opts->compression can now also be applied in the background
bcachefs: Prep work for variable size btree node buffers
bcachefs: grab s_umount only if snapshotting
...
Diffstat (limited to 'fs/bcachefs/sb-counters.c')
-rw-r--r-- | fs/bcachefs/sb-counters.c | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/fs/bcachefs/sb-counters.c b/fs/bcachefs/sb-counters.c new file mode 100644 index 000000000000..7dc898761bb3 --- /dev/null +++ b/fs/bcachefs/sb-counters.c @@ -0,0 +1,107 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "bcachefs.h" +#include "super-io.h" +#include "sb-counters.h" + +/* BCH_SB_FIELD_counters */ + +static const char * const bch2_counter_names[] = { +#define x(t, n, ...) (#t), + BCH_PERSISTENT_COUNTERS() +#undef x + NULL +}; + +static size_t bch2_sb_counter_nr_entries(struct bch_sb_field_counters *ctrs) +{ + if (!ctrs) + return 0; + + return (__le64 *) vstruct_end(&ctrs->field) - &ctrs->d[0]; +}; + +static int bch2_sb_counters_validate(struct bch_sb *sb, + struct bch_sb_field *f, + struct printbuf *err) +{ + return 0; +}; + +static void bch2_sb_counters_to_text(struct printbuf *out, struct bch_sb *sb, + struct bch_sb_field *f) +{ + struct bch_sb_field_counters *ctrs = field_to_type(f, counters); + unsigned int i; + unsigned int nr = bch2_sb_counter_nr_entries(ctrs); + + for (i = 0; i < nr; i++) { + if (i < BCH_COUNTER_NR) + prt_printf(out, "%s ", bch2_counter_names[i]); + else + prt_printf(out, "(unknown)"); + + prt_tab(out); + prt_printf(out, "%llu", le64_to_cpu(ctrs->d[i])); + prt_newline(out); + } +}; + +int bch2_sb_counters_to_cpu(struct bch_fs *c) +{ + struct bch_sb_field_counters *ctrs = bch2_sb_field_get(c->disk_sb.sb, counters); + unsigned int i; + unsigned int nr = bch2_sb_counter_nr_entries(ctrs); + u64 val = 0; + + for (i = 0; i < BCH_COUNTER_NR; i++) + c->counters_on_mount[i] = 0; + + for (i = 0; i < min_t(unsigned int, nr, BCH_COUNTER_NR); i++) { + val = le64_to_cpu(ctrs->d[i]); + percpu_u64_set(&c->counters[i], val); + c->counters_on_mount[i] = val; + } + return 0; +}; + +int bch2_sb_counters_from_cpu(struct bch_fs *c) +{ + struct bch_sb_field_counters *ctrs = bch2_sb_field_get(c->disk_sb.sb, counters); + struct bch_sb_field_counters *ret; + unsigned int i; + unsigned int nr = bch2_sb_counter_nr_entries(ctrs); + + if (nr < BCH_COUNTER_NR) { + ret = bch2_sb_field_resize(&c->disk_sb, counters, + sizeof(*ctrs) / sizeof(u64) + BCH_COUNTER_NR); + + if (ret) { + ctrs = ret; + nr = bch2_sb_counter_nr_entries(ctrs); + } + } + + + for (i = 0; i < min_t(unsigned int, nr, BCH_COUNTER_NR); i++) + ctrs->d[i] = cpu_to_le64(percpu_u64_get(&c->counters[i])); + return 0; +} + +void bch2_fs_counters_exit(struct bch_fs *c) +{ + free_percpu(c->counters); +} + +int bch2_fs_counters_init(struct bch_fs *c) +{ + c->counters = __alloc_percpu(sizeof(u64) * BCH_COUNTER_NR, sizeof(u64)); + if (!c->counters) + return -BCH_ERR_ENOMEM_fs_counters_init; + + return bch2_sb_counters_to_cpu(c); +} + +const struct bch_sb_field_ops bch_sb_field_ops_counters = { + .validate = bch2_sb_counters_validate, + .to_text = bch2_sb_counters_to_text, +}; |