Commit 555921fe authored by Dave Jiang's avatar Dave Jiang Committed by Vinod Koul
Browse files

dmaengine: idxd: rate limit printk in misc interrupt thread 



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: default avatarSanjay Kumar <sanjay.k.kumar@intel.com>
Signed-off-by: default avatarDave Jiang <dave.jiang@intel.com>
Reviewed-by: default avatarFenghua Yu <fenghua.yu@intel.com>
Acked-by: default avatarLijun Pan <lijun.pan@intel.com>
Link: https://lore.kernel.org/r/20230924002347.1117757-1-fenghua.yu@intel.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent b1c50ac2

drivers/dma/idxd/irq.c

+2 −2
Original line number Diff line number Diff line
@@ -434,7 +434,7 @@ 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",

			dev_warn_ratelimited(dev, "err[%d]: %#16.16llx\n",

					     i, idxd->sw_err.bits[i]);

		err = true;

	}