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drm/i915/selftests: wait for active idle event in i915_active_unlock_wait

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After i915_active_unlock_wait i915_active can be still non-idle due
to barrier async handling in signal_irq_work. As a result one can observe
following errors:
bcs0: heartbeat pulse did not flush idle tasks
*ERROR* pulse active pulse_active [i915]:pulse_retire [i915]
*ERROR* pulse    count: 0
*ERROR* pulse    preallocated barriers? no

To prevent it let's wait explicitly for idleness.

v2: wait only in live_idle tests

Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231205-selftest_wait_for_active_idle_event-v2-1-1437d0bf9829@intel.com
This commit is contained in:
Andrzej Hajda 2023-12-05 14:09:37 +01:00
parent cf9cb028ac
commit 34880b1873
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1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/gt/selftest_engine_heartbeat.c
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@ -84,7 +84,7 @@ static struct pulse *pulse_create(void)
static void pulse_unlock_wait(struct pulse *p)
{
i915_active_unlock_wait(&p->active);
wait_var_event_timeout(&p->active, i915_active_is_idle(&p->active), HZ);
}
static int __live_idle_pulse(struct intel_engine_cs *engine,