From b118aa341d2859b08cbd96630cf24ff9f65c61a6 Mon Sep 17 00:00:00 2001 From: Daniel Hill Date: Wed, 7 Dec 2022 18:41:21 +1300 Subject: bcachefs: expose nocow_lock table in sysfs Signed-off-by: Daniel Hill --- fs/bcachefs/sysfs.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/fs/bcachefs/sysfs.c b/fs/bcachefs/sysfs.c index f3f19ebda396..57091f90ff2d 100644 --- a/fs/bcachefs/sysfs.c +++ b/fs/bcachefs/sysfs.c @@ -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, -- cgit v1.2.3