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| author | Lu Baolu <baolu.lu@linux.intel.com> | 2021-06-10 05:01:04 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2021-06-10 10:06:13 +0300 |
| commit | e93a67f5a0eef3e9ab5b4649cac5c3b831c6a9db (patch) | |
| tree | a03e6164f2b25906b4ef98022acc5e35ceef9535 /.get_maintainer.ignore | |
| parent | d5b9e4bfe0d8848aaf428bb4bbcc270fecadef35 (diff) | |
| download | linux-e93a67f5a0eef3e9ab5b4649cac5c3b831c6a9db.tar.xz | |
iommu/vt-d: Add prq_report trace event
This adds a new trace event to track the page fault request report.
This event will provide almost all information defined in a page
request descriptor.
A sample output:
| prq_report: dmar0/0000:00:0a.0 seq# 1: rid=0x50 addr=0x559ef6f97 r---- pasid=0x2 index=0x1
| prq_report: dmar0/0000:00:0a.0 seq# 2: rid=0x50 addr=0x559ef6f9c rw--l pasid=0x2 index=0x1
| prq_report: dmar0/0000:00:0a.0 seq# 3: rid=0x50 addr=0x559ef6f98 r---- pasid=0x2 index=0x1
| prq_report: dmar0/0000:00:0a.0 seq# 4: rid=0x50 addr=0x559ef6f9d rw--l pasid=0x2 index=0x1
| prq_report: dmar0/0000:00:0a.0 seq# 5: rid=0x50 addr=0x559ef6f99 r---- pasid=0x2 index=0x1
| prq_report: dmar0/0000:00:0a.0 seq# 6: rid=0x50 addr=0x559ef6f9e rw--l pasid=0x2 index=0x1
| prq_report: dmar0/0000:00:0a.0 seq# 7: rid=0x50 addr=0x559ef6f9a r---- pasid=0x2 index=0x1
| prq_report: dmar0/0000:00:0a.0 seq# 8: rid=0x50 addr=0x559ef6f9f rw--l pasid=0x2 index=0x1
This will be helpful for I/O page fault related debugging.
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/20210610020115.1637656-13-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to '.get_maintainer.ignore')
0 files changed, 0 insertions, 0 deletions