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bcachefs: expose nocow_lock table in sysfs

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Signed-off-by: Daniel Hill <daniel@gluo.nz>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Daniel Hill 2022-12-07 18:41:21 +13:00 committed by Kent Overstreet
parent 5250b74d55
commit 71fe14655f
1 changed files with 19 additions and 0 deletions
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19
fs/bcachefs/sysfs.c
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@ -194,6 +194,7 @@ read_attribute(btree_key_cache);
read_attribute(stripes_heap);
read_attribute(open_buckets);
read_attribute(write_points);
read_attribute(nocow_lock_table);
#ifdef BCH_WRITE_REF_DEBUG
read_attribute(write_refs);
@ -476,6 +477,23 @@ SHOW(bch2_fs)
bch2_write_refs_to_text(out, c);
#endif
if (attr == &sysfs_nocow_lock_table) {
int i, count = 1;
long last, curr = 0;
last = atomic_long_read(&c->nocow_locks.l[0].v);
for (i = 1; i < BUCKET_NOCOW_LOCKS; i++) {
curr = atomic_long_read(&c->nocow_locks.l[i].v);
if (last != curr) {
prt_printf(out, "%li: %d\n", last, count);
count = 1;
last = curr;
} else
count++;
}
prt_printf(out, "%li: %d\n", last, count);
}
return 0;
}
@ -662,6 +680,7 @@ struct attribute *bch2_fs_internal_files[] = {
#ifdef BCH_WRITE_REF_DEBUG
&sysfs_write_refs,
#endif
&sysfs_nocow_lock_table,
&sysfs_io_timers_read,
&sysfs_io_timers_write,