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dmaengine: idxd: rate limit printk in misc interrupt thread

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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>
Reviewed-by: Fenghua Yu <fenghua.yu@intel.com>
Acked-by: Lijun Pan <lijun.pan@intel.com>
Link: https://lore.kernel.org/r/20230924002347.1117757-1-fenghua.yu@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Dave Jiang 2023-09-23 17:23:47 -07:00 committed by Vinod Koul
parent b1c50ac254
commit 555921feb2
1 changed files with 2 additions and 2 deletions
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4
drivers/dma/idxd/irq.c
View file

@ -434,8 +434,8 @@ 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;
}