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>

diff --git a/drivers/infiniband/hw/cxgb4/resource.c b/drivers/infiniband/hw/cxgb4/resource.c
index 83b23dfa250dea9171ef44a9e37fa3fc7efe3698..26365f6ed84bc4fb28748b5b861ab6d261a62b41 100644 (file)
--- 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;
 }