diff mbox series

dmaengine: idxd: rate limit printk in misc interrupt thread

Message ID 165125377735.312075.15715853788802098990.stgit@djiang5-desk3.ch.intel.com (mailing list archive)
State New
Headers show
Series dmaengine: idxd: rate limit printk in misc interrupt thread | expand

Commit Message

Dave Jiang April 29, 2022, 5:36 p.m. UTC
Add rate limit to the dev_warn() call in the misc interrupt thread. This
limits dmesg getting spammed if a descriptor submitter is spamming bad
descriptors with invalid completion records and resulting the errors being
continuously reported by the misc interrupt handling thread.

Reported-by: Sanjay Kumar <sanjay.k.kumar@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
---
 drivers/dma/idxd/irq.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/dma/idxd/irq.c b/drivers/dma/idxd/irq.c
index 98aad8a9ed2c..0d43ba228f0d 100644
--- a/drivers/dma/idxd/irq.c
+++ b/drivers/dma/idxd/irq.c
@@ -272,8 +272,8 @@  irqreturn_t idxd_misc_thread(int vec, void *data)
 		val |= IDXD_INTC_ERR;
 
 		for (i = 0; i < 4; i++)
-			dev_warn(dev, "err[%d]: %#16.16llx\n",
-				 i, idxd->sw_err.bits[i]);
+			dev_warn_ratelimited(dev, "err[%d]: %#16.16llx\n",
+					     i, idxd->sw_err.bits[i]);
 		err = true;
 	}