RDMA/cxgb4: Add debugfs RDMA memory stats

Signed-off-by: Vipul Pandya <vipul@chelsio.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/cxgb4/provider.c b/drivers/infiniband/hw/cxgb4/provider.c
index be1c18f4440..8d58736f9b4 100644
--- a/drivers/infiniband/hw/cxgb4/provider.c
+++ b/drivers/infiniband/hw/cxgb4/provider.c
@@ -190,6 +190,9 @@ static int c4iw_deallocate_pd(struct ib_pd *pd)
         PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
         c4iw_put_resource(&rhp->rdev.resource.pdid_fifo, php->pdid,
                           &rhp->rdev.resource.pdid_fifo_lock);
+        mutex_lock(&rhp->rdev.stats.lock);
+        rhp->rdev.stats.pd.cur--;
+        mutex_unlock(&rhp->rdev.stats.lock);
         kfree(php);
         return 0;
 }
@@ -222,6 +225,11 @@ static struct ib_pd *c4iw_allocate_pd(struct ib_device *ibdev,
                         return ERR_PTR(-EFAULT);
                 }
         }
+        mutex_lock(&rhp->rdev.stats.lock);
+        rhp->rdev.stats.pd.cur++;
+        if (rhp->rdev.stats.pd.cur > rhp->rdev.stats.pd.max)
+                rhp->rdev.stats.pd.max = rhp->rdev.stats.pd.cur;
+        mutex_unlock(&rhp->rdev.stats.lock);
         PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
         return &php->ibpd;
 }