[Intel-gfx] [PATCH] drm/i915/selftests: Make the kernel_context pulse explicit

[Chris Wilson]

As we disable the heartbeat, and prevent the engine parking, the switch
to kernel context is not automatic. Make it an explicit switch instead.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/gt/selftest_lrc.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/selftest_lrc.c b/drivers/gpu/drm/i915/gt/selftest_lrc.c
index febd608c23a7..35a7b37b1abc 100644
--- a/drivers/gpu/drm/i915/gt/selftest_lrc.c
+++ b/drivers/gpu/drm/i915/gt/selftest_lrc.c
@@ -4644,6 +4644,10 @@ static int __lrc_timestamp(const struct lrc_timestamp *arg, bool preempt)
 	}
 
 	/* and wait for switch to kernel */
+	err = intel_engine_pulse(arg->engine);
+	if (err)
+		goto err;
+
 	if (igt_flush_test(arg->engine->i915)) {
 		err = -EIO;
 		goto err;
-- 
2.25.1