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| author | Daniel Hill <daniel@gluo.nz> | 2022-03-15 21:36:33 +1300 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-10-22 17:09:32 -0400 |
| commit | 104c69745fdf7e5f8aa022f60bc9d568987bd8b8 (patch) | |
| tree | 09fc07cf3d1bbe991c7a586fbac4ee24c31d1b98 /fs/bcachefs/io.c | |
| parent | 1f93726e6347938343190913cb959623e67ecf78 (diff) | |
| download | lwn-104c69745fdf7e5f8aa022f60bc9d568987bd8b8.tar.gz lwn-104c69745fdf7e5f8aa022f60bc9d568987bd8b8.zip | |
bcachefs: Add persistent counters
This adds a new superblock field for persisting counters
and adds a sysfs interface in counters/ exposing these counters.
The superblock field is ignored by older versions letting us avoid
an on disk version bump.
Each sysfs file outputs a counter that tracks since filesystem
creation and a counter for the current mount session.
Signed-off-by: Daniel Hill <daniel@gluo.nz>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs/bcachefs/io.c')
| -rw-r--r-- | fs/bcachefs/io.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/bcachefs/io.c b/fs/bcachefs/io.c index 0f80255e59bd..f20891d48ca8 100644 --- a/fs/bcachefs/io.c +++ b/fs/bcachefs/io.c @@ -1403,6 +1403,7 @@ void bch2_write(struct closure *cl) goto err; } + this_cpu_add(c->counters[BCH_COUNTER_io_write], bio_sectors(bio)); bch2_increment_clock(c, bio_sectors(bio), WRITE); data_len = min_t(u64, bio->bi_iter.bi_size, @@ -2310,6 +2311,7 @@ get_bio: if (rbio->bounce) trace_read_bounce(&rbio->bio); + this_cpu_add(c->counters[BCH_COUNTER_io_read], bio_sectors(&rbio->bio)); bch2_increment_clock(c, bio_sectors(&rbio->bio), READ); /* |