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-rw-r--r--drivers/md/bcache/bcache.h4
-rw-r--r--drivers/md/bcache/journal.c5
-rw-r--r--drivers/md/bcache/sysfs.c15
3 files changed, 24 insertions, 0 deletions
diff --git a/drivers/md/bcache/bcache.h b/drivers/md/bcache/bcache.h
index 5e2d4e80198e..b98d7705acb6 100644
--- a/drivers/md/bcache/bcache.h
+++ b/drivers/md/bcache/bcache.h
@@ -658,6 +658,10 @@ struct cache_set {
atomic_long_t writeback_keys_done;
atomic_long_t writeback_keys_failed;
+ atomic_long_t reclaim;
+ atomic_long_t flush_write;
+ atomic_long_t retry_flush_write;
+
enum {
ON_ERROR_UNREGISTER,
ON_ERROR_PANIC,
diff --git a/drivers/md/bcache/journal.c b/drivers/md/bcache/journal.c
index a87165c1d8e5..f5296007a9d5 100644
--- a/drivers/md/bcache/journal.c
+++ b/drivers/md/bcache/journal.c
@@ -377,6 +377,8 @@ static void btree_flush_write(struct cache_set *c)
*/
struct btree *b, *best;
unsigned i;
+
+ atomic_long_inc(&c->flush_write);
retry:
best = NULL;
@@ -397,6 +399,7 @@ retry:
if (!btree_current_write(b)->journal) {
mutex_unlock(&b->write_lock);
/* We raced */
+ atomic_long_inc(&c->retry_flush_write);
goto retry;
}
@@ -476,6 +479,8 @@ static void journal_reclaim(struct cache_set *c)
unsigned iter, n = 0;
atomic_t p;
+ atomic_long_inc(&c->reclaim);
+
while (!atomic_read(&fifo_front(&c->journal.pin)))
fifo_pop(&c->journal.pin, p);
diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
index b4184092c727..46e7a6b3e7c7 100644
--- a/drivers/md/bcache/sysfs.c
+++ b/drivers/md/bcache/sysfs.c
@@ -65,6 +65,9 @@ read_attribute(bset_tree_stats);
read_attribute(state);
read_attribute(cache_read_races);
+read_attribute(reclaim);
+read_attribute(flush_write);
+read_attribute(retry_flush_write);
read_attribute(writeback_keys_done);
read_attribute(writeback_keys_failed);
read_attribute(io_errors);
@@ -545,6 +548,15 @@ SHOW(__bch_cache_set)
sysfs_print(cache_read_races,
atomic_long_read(&c->cache_read_races));
+ sysfs_print(reclaim,
+ atomic_long_read(&c->reclaim));
+
+ sysfs_print(flush_write,
+ atomic_long_read(&c->flush_write));
+
+ sysfs_print(retry_flush_write,
+ atomic_long_read(&c->retry_flush_write));
+
sysfs_print(writeback_keys_done,
atomic_long_read(&c->writeback_keys_done));
sysfs_print(writeback_keys_failed,
@@ -731,6 +743,9 @@ static struct attribute *bch_cache_set_internal_files[] = {
&sysfs_bset_tree_stats,
&sysfs_cache_read_races,
+ &sysfs_reclaim,
+ &sysfs_flush_write,
+ &sysfs_retry_flush_write,
&sysfs_writeback_keys_done,
&sysfs_writeback_keys_failed,