RDMA/cxgb4: Log HW lack-of-resource errors

This helps debug cases where HW resources are depleted.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/cxgb4/resource.c b/drivers/infiniband/hw/cxgb4/resource.c
index 83b23dfa250d..26365f6ed84b 100644
--- a/drivers/infiniband/hw/cxgb4/resource.c
+++ b/drivers/infiniband/hw/cxgb4/resource.c
@@ -311,6 +311,9 @@ u32 c4iw_pblpool_alloc(struct c4iw_rdev *rdev, int size)
 {
         unsigned long addr = gen_pool_alloc(rdev->pbl_pool, size);
         PDBG("%s addr 0x%x size %d\n", __func__, (u32)addr, size);
+        if (!addr && printk_ratelimit())
+                printk(KERN_WARNING MOD "%s: Out of PBL memory\n",
+                       pci_name(rdev->lldi.pdev));
         return (u32)addr;
 }
 
@@ -370,6 +373,9 @@ u32 c4iw_rqtpool_alloc(struct c4iw_rdev *rdev, int size)
 {
         unsigned long addr = gen_pool_alloc(rdev->rqt_pool, size << 6);
         PDBG("%s addr 0x%x size %d\n", __func__, (u32)addr, size << 6);
+        if (!addr && printk_ratelimit())
+                printk(KERN_WARNING MOD "%s: Out of RQT memory\n",
+                       pci_name(rdev->lldi.pdev));
         return (u32)addr;
 }