iommu/vt-d: Add qi_submit trace event

Browse source

This adds a new trace event to track the submissions of requests to the
invalidation queue. This event will provide the information like:
- IOMMU name
- Invalidation type
- Descriptor raw data

A sample output like:
| qi_submit: iotlb_inv dmar1: 0x100e2 0x0 0x0 0x0
| qi_submit: dev_tlb_inv dmar1: 0x1000000003 0x7ffffffffffff001 0x0 0x0
| qi_submit: iotlb_inv dmar2: 0x800f2 0xf9a00005 0x0 0x0

This will be helpful for queued invalidation related debugging.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210114090400.736104-1-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

...

This commit is contained in:

Lu Baolu 2021-01-14 17:04:00 +08:00 • committed by Joerg Roedel

parent 9872f9bd9d

commit f2dd871799

2 changed files with 40 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

37

include/trace/events/intel_iommu.h

View file