Define a new netlink event 'error-event' and a new multicast group
'error-report' in drm_-as. Each event contains device name, node and
error information to identify the error triggering the event.
Add drm_ras_nl_error_event() to trigger an event from the driver.
Wire this support to xe_drm_ras to report to userspace whenever a
correctable/uncorrectable error occurs on CRI.
$ sudo ynl --family drm_ras --output-json --subscribe error-report
{
"name": "error-event",
"msg": {
"device-name": "0000:03:00.0",
"node-id": 1,
"node-name": "uncorrectable-errors",
"error-id": 1,
"error-name": "core-compute",
"error-value": 1
}
}
Rev2: use ynl in document and commit message
fix cosmetic review comments
simplify caller
Rev3: replace error-event with error-report
had has_drm_ras check
add support for correctable errors in CRI
Rev4: send an event at most once per component for each interrupt
add xe_warn for unexpected values from firmware
fix sashiko reported issues
Rev5: Remove has_listeners
send netlink event to all network namespaces
Riana Tauro (3):
drm/drm_ras: Add drm_ras netlink error event
drm/xe/xe_ras: Report correctable error events to userspace
drm/xe/xe_ras: Report uncorrectable error events to userspace
Documentation/gpu/drm-ras.rst | 21 ++++++
Documentation/netlink/specs/drm_ras.yaml | 48 ++++++++++++++
drivers/gpu/drm/drm_ras.c | 84 ++++++++++++++++++++++++
drivers/gpu/drm/drm_ras_nl.c | 6 ++
drivers/gpu/drm/drm_ras_nl.h | 4 ++
drivers/gpu/drm/xe/xe_drm_ras.c | 42 ++++++++++++
drivers/gpu/drm/xe/xe_drm_ras.h | 3 +
drivers/gpu/drm/xe/xe_ras.c | 74 +++++++++++++++++++++
include/drm/drm_ras.h | 5 ++
include/uapi/drm/drm_ras.h | 15 +++++
10 files changed, 302 insertions(+)
--
2.47.1
