I don't know what this debug print is for but it is super chatty,
throwing 8 lines of debug prints in the logs every time we update a
plane. It looks like it has no value. Let's nuke it so we can get
better logs.
Cc: Sean Paul <[email protected]>
Cc: Abhinav Kumar <[email protected]>
Signed-off-by: Stephen Boyd <[email protected]>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
index 5e8c3f3e6625..5eb2b2ee09f5 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
@@ -245,9 +245,6 @@ void dpu_vbif_set_qos_remap(struct dpu_kms *dpu_kms,
forced_on = mdp->ops.setup_clk_force_ctrl(mdp, params->clk_ctrl, true);
for (i = 0; i < qos_tbl->npriority_lvl; i++) {
- DPU_DEBUG("vbif:%d xin:%d lvl:%d/%d\n",
- params->vbif_idx, params->xin_id, i,
- qos_tbl->priority_lvl[i]);
vbif->ops.set_qos_remap(vbif, params->xin_id, i,
qos_tbl->priority_lvl[i]);
}
--
Sent by a computer, using git, on the internet
On 2020-11-17 09:26, Stephen Boyd wrote:
> I don't know what this debug print is for but it is super chatty,
> throwing 8 lines of debug prints in the logs every time we update a
> plane. It looks like it has no value. Let's nuke it so we can get
> better logs.
>
> Cc: Sean Paul <[email protected]>
> Cc: Abhinav Kumar <[email protected]>
> Signed-off-by: Stephen Boyd <[email protected]>
> ---
> drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c | 3 ---
> 1 file changed, 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
> b/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
> index 5e8c3f3e6625..5eb2b2ee09f5 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
> @@ -245,9 +245,6 @@ void dpu_vbif_set_qos_remap(struct dpu_kms
> *dpu_kms,
> forced_on = mdp->ops.setup_clk_force_ctrl(mdp, params->clk_ctrl,
> true);
>
> for (i = 0; i < qos_tbl->npriority_lvl; i++) {
> - DPU_DEBUG("vbif:%d xin:%d lvl:%d/%d\n",
> - params->vbif_idx, params->xin_id, i,
> - qos_tbl->priority_lvl[i]);
Instead of getting rid of this print, we should optimize the caller of
this. This is what
we are doing in downstream. So we need to update the property only if we
are switching from a RT client
to non-RT client for the plane and vice-versa. So we should try to do
the same thing here.
is_rt = sde_crtc_is_rt_client(crtc, crtc->state);
if (is_rt != psde->is_rt_pipe) {
psde->is_rt_pipe = is_rt;
pstate->dirty |= SDE_PLANE_DIRTY_QOS;
}
if (pstate->dirty & DPU_PLANE_DIRTY_QOS)
_dpu_plane_set_qos_remap(plane);
Quoting [email protected] (2020-11-17 12:34:56)
> On 2020-11-17 09:26, Stephen Boyd wrote:
> > I don't know what this debug print is for but it is super chatty,
> > throwing 8 lines of debug prints in the logs every time we update a
> > plane. It looks like it has no value. Let's nuke it so we can get
> > better logs.
> >
> > Cc: Sean Paul <[email protected]>
> > Cc: Abhinav Kumar <[email protected]>
> > Signed-off-by: Stephen Boyd <[email protected]>
>
> > ---
> > drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c | 3 ---
> > 1 file changed, 3 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
> > b/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
> > index 5e8c3f3e6625..5eb2b2ee09f5 100644
> > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
> > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
> > @@ -245,9 +245,6 @@ void dpu_vbif_set_qos_remap(struct dpu_kms
> > *dpu_kms,
> > forced_on = mdp->ops.setup_clk_force_ctrl(mdp, params->clk_ctrl,
> > true);
> >
> > for (i = 0; i < qos_tbl->npriority_lvl; i++) {
> > - DPU_DEBUG("vbif:%d xin:%d lvl:%d/%d\n",
> > - params->vbif_idx, params->xin_id, i,
> > - qos_tbl->priority_lvl[i]);
>
> Instead of getting rid of this print, we should optimize the caller of
> this.
Does the print tell us anything? Right now it prints 8 lines where it
feels like it could be trimmed down:
[drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:0/3
[drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:1/3
[drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:2/4
[drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:3/4
[drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:4/5
[drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:5/5
[drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:6/6
[drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:7/6
maybe one line that combines the index into values?
[drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 [3 3 4 4 5 5 6 6]
But again I have no idea if this print is really useful. Maybe we can
print it only if the value changes from what was already there?
Basically move the print into dpu_hw_set_qos_remap() and then skip out
early if nothing changed or print and modify the register.
> This is what
> we are doing in downstream. So we need to update the property only if we
> are switching from a RT client
> to non-RT client for the plane and vice-versa. So we should try to do
> the same thing here.
>
> is_rt = sde_crtc_is_rt_client(crtc, crtc->state);
> if (is_rt != psde->is_rt_pipe) {
> psde->is_rt_pipe = is_rt;
> pstate->dirty |= SDE_PLANE_DIRTY_QOS;
> }
>
>
> if (pstate->dirty & DPU_PLANE_DIRTY_QOS)
> _dpu_plane_set_qos_remap(plane);
>
Sounds great! Can you send the patch?
On Tue, Nov 17, 2020 at 2:53 PM Stephen Boyd <[email protected]> wrote:
>
> Quoting [email protected] (2020-11-17 12:34:56)
> > On 2020-11-17 09:26, Stephen Boyd wrote:
> > > I don't know what this debug print is for but it is super chatty,
> > > throwing 8 lines of debug prints in the logs every time we update a
> > > plane. It looks like it has no value. Let's nuke it so we can get
> > > better logs.
> > >
> > > Cc: Sean Paul <[email protected]>
> > > Cc: Abhinav Kumar <[email protected]>
> > > Signed-off-by: Stephen Boyd <[email protected]>
> >
> > > ---
> > > drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c | 3 ---
> > > 1 file changed, 3 deletions(-)
> > >
> > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
> > > b/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
> > > index 5e8c3f3e6625..5eb2b2ee09f5 100644
> > > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
> > > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
> > > @@ -245,9 +245,6 @@ void dpu_vbif_set_qos_remap(struct dpu_kms
> > > *dpu_kms,
> > > forced_on = mdp->ops.setup_clk_force_ctrl(mdp, params->clk_ctrl,
> > > true);
> > >
> > > for (i = 0; i < qos_tbl->npriority_lvl; i++) {
> > > - DPU_DEBUG("vbif:%d xin:%d lvl:%d/%d\n",
> > > - params->vbif_idx, params->xin_id, i,
> > > - qos_tbl->priority_lvl[i]);
> >
> > Instead of getting rid of this print, we should optimize the caller of
> > this.
>
> Does the print tell us anything? Right now it prints 8 lines where it
> feels like it could be trimmed down:
>
> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:0/3
> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:1/3
> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:2/4
> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:3/4
> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:4/5
> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:5/5
> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:6/6
> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:7/6
>
> maybe one line that combines the index into values?
>
> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 [3 3 4 4 5 5 6 6]
>
or possibly convert to a tracepoint (so it doesn't spam the drm_trace buffer)
BR,
-R
> But again I have no idea if this print is really useful. Maybe we can
> print it only if the value changes from what was already there?
> Basically move the print into dpu_hw_set_qos_remap() and then skip out
> early if nothing changed or print and modify the register.
>
> > This is what
> > we are doing in downstream. So we need to update the property only if we
> > are switching from a RT client
> > to non-RT client for the plane and vice-versa. So we should try to do
> > the same thing here.
> >
> > is_rt = sde_crtc_is_rt_client(crtc, crtc->state);
> > if (is_rt != psde->is_rt_pipe) {
> > psde->is_rt_pipe = is_rt;
> > pstate->dirty |= SDE_PLANE_DIRTY_QOS;
> > }
> >
> >
> > if (pstate->dirty & DPU_PLANE_DIRTY_QOS)
> > _dpu_plane_set_qos_remap(plane);
> >
>
> Sounds great! Can you send the patch?
Hi Stephen
On 2020-11-18 07:49, Rob Clark wrote:
> On Tue, Nov 17, 2020 at 2:53 PM Stephen Boyd <[email protected]>
> wrote:
>>
>> Quoting [email protected] (2020-11-17 12:34:56)
>> > On 2020-11-17 09:26, Stephen Boyd wrote:
>> > > I don't know what this debug print is for but it is super chatty,
>> > > throwing 8 lines of debug prints in the logs every time we update a
>> > > plane. It looks like it has no value. Let's nuke it so we can get
>> > > better logs.
>> > >
>> > > Cc: Sean Paul <[email protected]>
>> > > Cc: Abhinav Kumar <[email protected]>
>> > > Signed-off-by: Stephen Boyd <[email protected]>
>> >
>> > > ---
>> > > drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c | 3 ---
>> > > 1 file changed, 3 deletions(-)
>> > >
>> > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
>> > > b/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
>> > > index 5e8c3f3e6625..5eb2b2ee09f5 100644
>> > > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
>> > > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
>> > > @@ -245,9 +245,6 @@ void dpu_vbif_set_qos_remap(struct dpu_kms
>> > > *dpu_kms,
>> > > forced_on = mdp->ops.setup_clk_force_ctrl(mdp, params->clk_ctrl,
>> > > true);
>> > >
>> > > for (i = 0; i < qos_tbl->npriority_lvl; i++) {
>> > > - DPU_DEBUG("vbif:%d xin:%d lvl:%d/%d\n",
>> > > - params->vbif_idx, params->xin_id, i,
>> > > - qos_tbl->priority_lvl[i]);
>> >
>> > Instead of getting rid of this print, we should optimize the caller of
>> > this.
>>
>> Does the print tell us anything? Right now it prints 8 lines where it
>> feels like it could be trimmed down:
>>
>> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:0/3
>> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:1/3
>> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:2/4
>> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:3/4
>> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:4/5
>> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:5/5
>> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:6/6
>> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:7/6
>>
>> maybe one line that combines the index into values?
>>
>> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 [3 3 4 4 5 5 6 6]
>>
>
> or possibly convert to a tracepoint (so it doesn't spam the drm_trace
> buffer)
>
> BR,
> -R
>
>> But again I have no idea if this print is really useful. Maybe we can
>> print it only if the value changes from what was already there?
>> Basically move the print into dpu_hw_set_qos_remap() and then skip out
>> early if nothing changed or print and modify the register.
>>
>> > This is what
>> > we are doing in downstream. So we need to update the property only if we
>> > are switching from a RT client
>> > to non-RT client for the plane and vice-versa. So we should try to do
>> > the same thing here.
>> >
>> > is_rt = sde_crtc_is_rt_client(crtc, crtc->state);
>> > if (is_rt != psde->is_rt_pipe) {
>> > psde->is_rt_pipe = is_rt;
>> > pstate->dirty |= SDE_PLANE_DIRTY_QOS;
>> > }
>> >
>> >
>> > if (pstate->dirty & DPU_PLANE_DIRTY_QOS)
>> > _dpu_plane_set_qos_remap(plane);
>> >
>>
>> Sounds great! Can you send the patch?
Will finalize approach and send the patch in a day or two.
Thanks
Abhinav
On 2020-11-18 12:03, [email protected] wrote:
> Hi Stephen
>
> On 2020-11-18 07:49, Rob Clark wrote:
>> On Tue, Nov 17, 2020 at 2:53 PM Stephen Boyd <[email protected]>
>> wrote:
>>>
>>> Quoting [email protected] (2020-11-17 12:34:56)
>>> > On 2020-11-17 09:26, Stephen Boyd wrote:
>>> > > I don't know what this debug print is for but it is super chatty,
>>> > > throwing 8 lines of debug prints in the logs every time we update a
>>> > > plane. It looks like it has no value. Let's nuke it so we can get
>>> > > better logs.
>>> > >
>>> > > Cc: Sean Paul <[email protected]>
>>> > > Cc: Abhinav Kumar <[email protected]>
>>> > > Signed-off-by: Stephen Boyd <[email protected]>
>>> >
>>> > > ---
>>> > > drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c | 3 ---
>>> > > 1 file changed, 3 deletions(-)
>>> > >
>>> > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
>>> > > b/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
>>> > > index 5e8c3f3e6625..5eb2b2ee09f5 100644
>>> > > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
>>> > > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
>>> > > @@ -245,9 +245,6 @@ void dpu_vbif_set_qos_remap(struct dpu_kms
>>> > > *dpu_kms,
>>> > > forced_on = mdp->ops.setup_clk_force_ctrl(mdp, params->clk_ctrl,
>>> > > true);
>>> > >
>>> > > for (i = 0; i < qos_tbl->npriority_lvl; i++) {
>>> > > - DPU_DEBUG("vbif:%d xin:%d lvl:%d/%d\n",
>>> > > - params->vbif_idx, params->xin_id, i,
>>> > > - qos_tbl->priority_lvl[i]);
>>> >
>>> > Instead of getting rid of this print, we should optimize the caller of
>>> > this.
>>>
>>> Does the print tell us anything? Right now it prints 8 lines where it
>>> feels like it could be trimmed down:
>>>
>>> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:0/3
>>> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:1/3
>>> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:2/4
>>> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:3/4
>>> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:4/5
>>> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:5/5
>>> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:6/6
>>> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 lvl:7/6
>>>
>>> maybe one line that combines the index into values?
>>>
>>> [drm:dpu_vbif_set_qos_remap] vbif:0 xin:0 [3 3 4 4 5 5 6
>>> 6]
>>>
>>
>> or possibly convert to a tracepoint (so it doesn't spam the drm_trace
>> buffer)
>>
>> BR,
>> -R
>>
>>> But again I have no idea if this print is really useful. Maybe we can
>>> print it only if the value changes from what was already there?
>>> Basically move the print into dpu_hw_set_qos_remap() and then skip
>>> out
>>> early if nothing changed or print and modify the register.
>>>
>>> > This is what
>>> > we are doing in downstream. So we need to update the property only if we
>>> > are switching from a RT client
>>> > to non-RT client for the plane and vice-versa. So we should try to do
>>> > the same thing here.
>>> >
>>> > is_rt = sde_crtc_is_rt_client(crtc, crtc->state);
>>> > if (is_rt != psde->is_rt_pipe) {
>>> > psde->is_rt_pipe = is_rt;
>>> > pstate->dirty |= SDE_PLANE_DIRTY_QOS;
>>> > }
>>> >
>>> >
>>> > if (pstate->dirty & DPU_PLANE_DIRTY_QOS)
>>> > _dpu_plane_set_qos_remap(plane);
>>> >
>>>
>>> Sounds great! Can you send the patch?
>
> Will finalize approach and send the patch in a day or two.
>
> Thanks
>
> Abhinav
patch has been posted here for review :
https://patchwork.freedesktop.org/patch/401929/