iommu/vt-d: Add PRQ handling latency sampling

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The execution time for page fault request handling is performance critical
and needs to be monitored. This adds code to sample the execution time of
page fault request handling.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210520031531.712333-1-baolu.lu@linux.intel.com
Link: https://lore.kernel.org/r/20210610020115.1637656-17-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Lu Baolu 2021-06-10 10:01:08 +08:00 • committed by Joerg Roedel

parent 74eb87a0f9

commit 0f4834ab25

1 changed files with 13 additions and 3 deletions

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16

drivers/iommu/intel/svm.c

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