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* [Intel-gfx] [PATCH] drm/i915/gt: Fix rc6 on Ivybridge
@ 2020-02-03 20:21 Chris Wilson
  2020-02-04  9:06 ` Andi Shyti
  2020-02-04 20:05 ` [Intel-gfx] ✓ Fi.CI.BAT: success for " Patchwork
  0 siblings, 2 replies; 5+ messages in thread
From: Chris Wilson @ 2020-02-03 20:21 UTC (permalink / raw)
  To: intel-gfx

The current rc6 threshold is larger than the evaluation interval on
Ivybridge; it never enters rc6. Remove the special casing so it behaves
like the other gen6/gen7, and we see rc6 residencies before we manually
park the system.

Closes: https://gitlab.freedesktop.org/drm/intel/issues/1114
Testcase: igt/i915_pm_rc6_residency/rc6-idle #ivb
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Andi Shyti <andi.shyti@intel.com>
---
 drivers/gpu/drm/i915/gt/intel_rc6.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_rc6.c b/drivers/gpu/drm/i915/gt/intel_rc6.c
index 01a99fdbb3c4..682f598f7042 100644
--- a/drivers/gpu/drm/i915/gt/intel_rc6.c
+++ b/drivers/gpu/drm/i915/gt/intel_rc6.c
@@ -226,10 +226,7 @@ static void gen6_rc6_enable(struct intel_rc6 *rc6)
 
 	set(uncore, GEN6_RC_SLEEP, 0);
 	set(uncore, GEN6_RC1e_THRESHOLD, 1000);
-	if (IS_IVYBRIDGE(i915))
-		set(uncore, GEN6_RC6_THRESHOLD, 125000);
-	else
-		set(uncore, GEN6_RC6_THRESHOLD, 50000);
+	set(uncore, GEN6_RC6_THRESHOLD, 50000);
 	set(uncore, GEN6_RC6p_THRESHOLD, 150000);
 	set(uncore, GEN6_RC6pp_THRESHOLD, 64000); /* unused */
 
-- 
2.25.0

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Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2020-02-03 20:21 [Intel-gfx] [PATCH] drm/i915/gt: Fix rc6 on Ivybridge Chris Wilson
2020-02-04  9:06 ` Andi Shyti
2020-02-04  9:09   ` Chris Wilson
2020-02-04  9:58     ` Andi Shyti
2020-02-04 20:05 ` [Intel-gfx] ✓ Fi.CI.BAT: success for " Patchwork

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