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drm/i915/selftests: Keep engine awake during live_coherency

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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>
Link: https://patchwork.freedesktop.org/patch/msgid/20191129222702.1456292-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2019-11-29 22:27:02 +00:00
parent 97c1635397
commit f9a863c2ff
1 changed files with 2 additions and 0 deletions
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drivers/gpu/drm/i915/gem/selftests/i915_gem_coherency.c
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@ -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;