drm/i915/selftests: Keep engine awake during live_coherency
diff mbox series

Message ID 20191129222702.1456292-1-chris@chris-wilson.co.uk
State New
Headers show
Series
  • drm/i915/selftests: Keep engine awake during live_coherency
Related show

Commit Message

Chris Wilson Nov. 29, 2019, 10:27 p.m. UTC
Keep the engine awake and so avoid frequent cycling in and out of
powersaving mode to eliminate the unnecessary overhead and speed up the
testing.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
---
 drivers/gpu/drm/i915/gem/selftests/i915_gem_coherency.c | 2 ++
 1 file changed, 2 insertions(+)

Comments

Matthew Auld Nov. 29, 2019, 10:43 p.m. UTC | #1
On Fri, 29 Nov 2019 at 22:27, Chris Wilson <chris@chris-wilson.co.uk> wrote:
>
> Keep the engine awake and so avoid frequent cycling in and out of
> powersaving mode to eliminate the unnecessary overhead and speed up the
> testing.
>
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>

Patch
diff mbox series

diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_coherency.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_coherency.c
index 9d3cd1af61f6..49edc51111d5 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_coherency.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_coherency.c
@@ -327,6 +327,7 @@  static int igt_gem_coherency(void *arg)
 	ctx.engine = random_engine(i915, &prng);
 	GEM_BUG_ON(!ctx.engine);
 	pr_info("%s: using %s\n", __func__, ctx.engine->name);
+	intel_engine_pm_get(ctx.engine);
 
 	for (over = igt_coherency_mode; over->name; over++) {
 		if (!over->set)
@@ -405,6 +406,7 @@  static int igt_gem_coherency(void *arg)
 		}
 	}
 free:
+	intel_engine_pm_put(ctx.engine);
 	kfree(offsets);
 	return err;