* [PATCH] drm/i915: Nuke skl_update_plane debug message from the pipe update critical section
@ 2017-03-08 12:00 Maarten Lankhorst
2017-03-08 13:12 ` Ville Syrjälä
0 siblings, 1 reply; 4+ messages in thread
From: Maarten Lankhorst @ 2017-03-08 12:00 UTC (permalink / raw)
To: dri-devel
printks are slow so we should not be doing them from the vblank evade
critical section. These could explain why we sometimes seem to
blow past our 100 usec deadline.
The problem has been there ever since commit bfd16b2a23dc ("drm/i915:
Make updating pipe without modeset atomic.") but it may not have
been readily visible until commit e1edbd44e23b ("drm/i915: Complain
if we take too long under vblank evasion.") increased our chances
of noticing it.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
drivers/gpu/drm/i915/intel_sprite.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 375ca91b308c..00da5a1ede82 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -271,9 +271,6 @@ skl_update_plane(struct drm_plane *drm_plane,
int scaler_id = plane_state->scaler_id;
const struct intel_scaler *scaler;
- DRM_DEBUG_KMS("plane = %d PS_PLANE_SEL(plane) = 0x%x\n",
- plane_id, PS_PLANE_SEL(plane_id));
-
scaler = &crtc_state->scaler_state.scalers[scaler_id];
I915_WRITE(SKL_PS_CTRL(pipe, scaler_id),
--
2.7.4
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH] drm/i915: Nuke skl_update_plane debug message from the pipe update critical section
2017-03-08 12:00 [PATCH] drm/i915: Nuke skl_update_plane debug message from the pipe update critical section Maarten Lankhorst
@ 2017-03-08 13:12 ` Ville Syrjälä
2017-03-08 13:26 ` Maarten Lankhorst
2017-03-09 10:42 ` Maarten Lankhorst
0 siblings, 2 replies; 4+ messages in thread
From: Ville Syrjälä @ 2017-03-08 13:12 UTC (permalink / raw)
To: Maarten Lankhorst; +Cc: dri-devel
On Wed, Mar 08, 2017 at 01:00:07PM +0100, Maarten Lankhorst wrote:
> printks are slow so we should not be doing them from the vblank evade
> critical section. These could explain why we sometimes seem to
> blow past our 100 usec deadline.
>
> The problem has been there ever since commit bfd16b2a23dc ("drm/i915:
> Make updating pipe without modeset atomic.")
I guess that part isn't actually true as far as this printk is
concerned?
Maybe commit 331879ce8ea ("drm/i915: skylake sprite plane scaling
using shared scalers")?
Anyways
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> but it may not have
> been readily visible until commit e1edbd44e23b ("drm/i915: Complain
> if we take too long under vblank evasion.") increased our chances
> of noticing it.
>
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> ---
> drivers/gpu/drm/i915/intel_sprite.c | 3 ---
> 1 file changed, 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
> index 375ca91b308c..00da5a1ede82 100644
> --- a/drivers/gpu/drm/i915/intel_sprite.c
> +++ b/drivers/gpu/drm/i915/intel_sprite.c
> @@ -271,9 +271,6 @@ skl_update_plane(struct drm_plane *drm_plane,
> int scaler_id = plane_state->scaler_id;
> const struct intel_scaler *scaler;
>
> - DRM_DEBUG_KMS("plane = %d PS_PLANE_SEL(plane) = 0x%x\n",
> - plane_id, PS_PLANE_SEL(plane_id));
> -
> scaler = &crtc_state->scaler_state.scalers[scaler_id];
>
> I915_WRITE(SKL_PS_CTRL(pipe, scaler_id),
> --
> 2.7.4
--
Ville Syrjälä
Intel OTC
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] drm/i915: Nuke skl_update_plane debug message from the pipe update critical section
2017-03-08 13:12 ` Ville Syrjälä
@ 2017-03-08 13:26 ` Maarten Lankhorst
2017-03-09 10:42 ` Maarten Lankhorst
1 sibling, 0 replies; 4+ messages in thread
From: Maarten Lankhorst @ 2017-03-08 13:26 UTC (permalink / raw)
To: Ville Syrjälä; +Cc: dri-devel
Op 08-03-17 om 14:12 schreef Ville Syrjälä:
> On Wed, Mar 08, 2017 at 01:00:07PM +0100, Maarten Lankhorst wrote:
>> printks are slow so we should not be doing them from the vblank evade
>> critical section. These could explain why we sometimes seem to
>> blow past our 100 usec deadline.
>>
>> The problem has been there ever since commit bfd16b2a23dc ("drm/i915:
>> Make updating pipe without modeset atomic.")
> I guess that part isn't actually true as far as this printk is
> concerned?
>
> Maybe commit 331879ce8ea ("drm/i915: skylake sprite plane scaling
> using shared scalers")?
Indeed, too much copy paste. Thanks for review.
~Maarten
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] drm/i915: Nuke skl_update_plane debug message from the pipe update critical section
2017-03-08 13:12 ` Ville Syrjälä
2017-03-08 13:26 ` Maarten Lankhorst
@ 2017-03-09 10:42 ` Maarten Lankhorst
1 sibling, 0 replies; 4+ messages in thread
From: Maarten Lankhorst @ 2017-03-09 10:42 UTC (permalink / raw)
To: Ville Syrjälä; +Cc: dri-devel
Op 08-03-17 om 14:12 schreef Ville Syrjälä:
> On Wed, Mar 08, 2017 at 01:00:07PM +0100, Maarten Lankhorst wrote:
>> printks are slow so we should not be doing them from the vblank evade
>> critical section. These could explain why we sometimes seem to
>> blow past our 100 usec deadline.
>>
>> The problem has been there ever since commit bfd16b2a23dc ("drm/i915:
>> Make updating pipe without modeset atomic.")
> I guess that part isn't actually true as far as this printk is
> concerned?
>
> Maybe commit 331879ce8ea ("drm/i915: skylake sprite plane scaling
> using shared scalers")?
>
> Anyways
> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
>
>> but it may not have
>> been readily visible until commit e1edbd44e23b ("drm/i915: Complain
>> if we take too long under vblank evasion.") increased our chances
>> of noticing it.
>>
>> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
>> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
>> ---
>> drivers/gpu/drm/i915/intel_sprite.c | 3 ---
>> 1 file changed, 3 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
>> index 375ca91b308c..00da5a1ede82 100644
>> --- a/drivers/gpu/drm/i915/intel_sprite.c
>> +++ b/drivers/gpu/drm/i915/intel_sprite.c
>> @@ -271,9 +271,6 @@ skl_update_plane(struct drm_plane *drm_plane,
>> int scaler_id = plane_state->scaler_id;
>> const struct intel_scaler *scaler;
>>
>> - DRM_DEBUG_KMS("plane = %d PS_PLANE_SEL(plane) = 0x%x\n",
>> - plane_id, PS_PLANE_SEL(plane_id));
>> -
>> scaler = &crtc_state->scaler_state.scalers[scaler_id];
>>
>> I915_WRITE(SKL_PS_CTRL(pipe, scaler_id),
>> --
>> 2.7.4
Pushed with the changes.
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2017-03-09 10:42 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2017-03-08 12:00 [PATCH] drm/i915: Nuke skl_update_plane debug message from the pipe update critical section Maarten Lankhorst
2017-03-08 13:12 ` Ville Syrjälä
2017-03-08 13:26 ` Maarten Lankhorst
2017-03-09 10:42 ` Maarten Lankhorst
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.