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drm/i915/selftests: Disable heartbeat around manual pulse tests

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Still chasing the mystery of the stray idle flush, let's ensure that the
heartbeat does not run at the same time as our test and confuse us.

References: https://gitlab.freedesktop.org/drm/intel/issues/541
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200227085723.1961649-8-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2020-02-27 08:57:11 +00:00
parent c0e3101882
commit 950da30162
2 changed files with 27 additions and 6 deletions
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30
drivers/gpu/drm/i915/gt/selftest_engine_heartbeat.c
View File

@ -142,6 +142,24 @@ static int __live_idle_pulse(struct intel_engine_cs *engine,
return err;
}
static void engine_heartbeat_disable(struct intel_engine_cs *engine,
unsigned long *saved)
{
*saved = engine->props.heartbeat_interval_ms;
engine->props.heartbeat_interval_ms = 0;
intel_engine_pm_get(engine);
intel_engine_park_heartbeat(engine);
}
static void engine_heartbeat_enable(struct intel_engine_cs *engine,
unsigned long saved)
{
intel_engine_pm_put(engine);
engine->props.heartbeat_interval_ms = saved;
}
static int live_idle_flush(void *arg)
{
struct intel_gt *gt = arg;
@ -152,9 +170,11 @@ static int live_idle_flush(void *arg)
/* Check that we can flush the idle barriers */
for_each_engine(engine, gt, id) {
intel_engine_pm_get(engine);
unsigned long heartbeat;
engine_heartbeat_disable(engine, &heartbeat);
err = __live_idle_pulse(engine, intel_engine_flush_barriers);
intel_engine_pm_put(engine);
engine_heartbeat_enable(engine, heartbeat);
if (err)
break;
}
@ -172,9 +192,11 @@ static int live_idle_pulse(void *arg)
/* Check that heartbeat pulses flush the idle barriers */
for_each_engine(engine, gt, id) {
intel_engine_pm_get(engine);
unsigned long heartbeat;
engine_heartbeat_disable(engine, &heartbeat);
err = __live_idle_pulse(engine, intel_engine_pulse);
intel_engine_pm_put(engine);
engine_heartbeat_enable(engine, heartbeat);
if (err && err != -ENODEV)
break;

3
drivers/gpu/drm/i915/selftests/i915_active.c
View File

@ -331,8 +331,7 @@ void i915_active_unlock_wait(struct i915_active *ref)
}
/* And wait for the retire callback */
spin_lock_irq(&ref->tree_lock);
spin_unlock_irq(&ref->tree_lock);
spin_unlock_wait(&ref->tree_lock);
/* ... which may have been on a thread instead */
flush_work(&ref->work);