habanalabs: ratelimit error prints of IRQs

The compute engines can perform millions of transactions per second. If
there is a bug in the S/W stack, we could get a lot of interrupts and spam
the kernel log. Therefore, ratelimit these prints

Reviewed-by: Omer Shpigelman <oshpigelman@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>

diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c
index 0b6567b..19bce06 100644 (file)
--- a/drivers/misc/habanalabs/goya/goya.c
+++ b/drivers/misc/habanalabs/goya/goya.c
@@ -4480,22 +4480,22 @@ static void goya_get_event_desc(u16 event_type, char *desc, size_t size)
 static void goya_print_razwi_info(struct hl_device *hdev)
 {
        if (RREG32(mmDMA_MACRO_RAZWI_LBW_WT_VLD)) {
-               dev_err(hdev->dev, "Illegal write to LBW\n");
+               dev_err_ratelimited(hdev->dev, "Illegal write to LBW\n");
                WREG32(mmDMA_MACRO_RAZWI_LBW_WT_VLD, 0);
        }
 
        if (RREG32(mmDMA_MACRO_RAZWI_LBW_RD_VLD)) {
-               dev_err(hdev->dev, "Illegal read from LBW\n");
+               dev_err_ratelimited(hdev->dev, "Illegal read from LBW\n");
                WREG32(mmDMA_MACRO_RAZWI_LBW_RD_VLD, 0);
        }
 
        if (RREG32(mmDMA_MACRO_RAZWI_HBW_WT_VLD)) {
-               dev_err(hdev->dev, "Illegal write to HBW\n");
+               dev_err_ratelimited(hdev->dev, "Illegal write to HBW\n");
                WREG32(mmDMA_MACRO_RAZWI_HBW_WT_VLD, 0);
        }
 
        if (RREG32(mmDMA_MACRO_RAZWI_HBW_RD_VLD)) {
-               dev_err(hdev->dev, "Illegal read from HBW\n");
+               dev_err_ratelimited(hdev->dev, "Illegal read from HBW\n");
                WREG32(mmDMA_MACRO_RAZWI_HBW_RD_VLD, 0);
        }
 }
@@ -4515,7 +4515,8 @@ static void goya_print_mmu_error_info(struct hl_device *hdev)
                addr <<= 32;
                addr |= RREG32(mmMMU_PAGE_ERROR_CAPTURE_VA);
 
-               dev_err(hdev->dev, "MMU page fault on va 0x%llx\n", addr);
+               dev_err_ratelimited(hdev->dev, "MMU page fault on va 0x%llx\n",
+                                       addr);
 
                WREG32(mmMMU_PAGE_ERROR_CAPTURE, 0);
        }
@@ -4527,7 +4528,7 @@ static void goya_print_irq_info(struct hl_device *hdev, u16 event_type,
        char desc[20] = "";
 
        goya_get_event_desc(event_type, desc, sizeof(desc));
-       dev_err(hdev->dev, "Received H/W interrupt %d [\"%s\"]\n",
+       dev_err_ratelimited(hdev->dev, "Received H/W interrupt %d [\"%s\"]\n",
                event_type, desc);
 
        if (razwi) {