lightnvm: pblk: add debug stat for read cache hits

Add a new debug counter to measure cache hits on the read path

Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <matias@cnexlabs.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c
index aaefbccce30e..2d79336748ee 100644
--- a/drivers/lightnvm/pblk-init.c
+++ b/drivers/lightnvm/pblk-init.c
@@ -839,6 +839,7 @@ static void *pblk_init(struct nvm_tgt_dev *dev, struct gendisk *tdisk,
         atomic_long_set(&pblk->sync_writes, 0);
         atomic_long_set(&pblk->compl_writes, 0);
         atomic_long_set(&pblk->inflight_reads, 0);
+        atomic_long_set(&pblk->cache_reads, 0);
         atomic_long_set(&pblk->sync_reads, 0);
         atomic_long_set(&pblk->recov_writes, 0);
         atomic_long_set(&pblk->recov_writes, 0);