CI reports the following failures from basic-nohangcheck subtest:
(gem_ctx_exec:1115) CRITICAL: Test assertion failure function nohangcheck_hostile, file ../../../usr/src/igt-gpu-tools/tests/intel/gem_ctx_exec.c:374:
(gem_ctx_exec:1115) CRITICAL: Failed assertion: err == 0
(gem_ctx_exec:1115) CRITICAL: Last errno: 2, No such file or directory
(gem_ctx_exec:1115) CRITICAL: Hostile unpreemptable context was not cancelled immediately upon closure
The subtest sets 50 ms preempt timeout on each engine before proceding
with submission of spins, then it waits up to 1 second for those spins to
be terminated. However, dump of engines' debugfs data performed by the
subtest after the failure shows preempt timeouts still at their default
values: 7500 ms on rcs0 and 640 ms on other class engines. Dmesg records
confirm preemption timeouts triggered on other engines after 640 ms and
not on rcs0 within the 1 second limit.
Fix the issue.
v2: Fix missing closing parenthesis.
v3: Don't fail on unsuccessful update of preempt_timeout_ms, older
platforms don't support it but can still succeed,
- add still more debug messages.
v4: Fix missing line termination.
Link: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/6268
Janusz Krzysztofik (5):
tests/gem_ctx_exec: Fail on unsuccessful preempt timeout update
lib: Add more debug messages to error paths
lib/gem_engine_topology: Fix premature break from primary find loop
lib/gem_engine_topology: Simplify the method of opening a primary
lib/gem_engine_topology: Fix broken compare of device links
lib/i915/gem_engine_topology.c | 33 ++++++++++++++++-----------------
lib/igt_sysfs.c | 4 ++--
tests/intel/gem_ctx_exec.c | 11 +++++++----
3 files changed, 25 insertions(+), 23 deletions(-)
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2.45.2
