Re: [PATCH 1/4] drm/amdgpu: cleanup struct amdgpu_ring

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On Mon, Feb 1, 2021 at 11:13 AM Christian König
<christian.koenig@xxxxxxx> wrote:
>
> Am 01.02.21 um 16:51 schrieb Nirmoy Das:
> > This patch consist of below related changes:
> >
> > 1 Rename ring->priority to ring->hw_prio.
> > 2 Assign correct hardware ring priority.
> > 3 Remove ring->priority_mutex as ring priority remains unchanged
> >    after initialization.
> > 4 Remove unused ring->num_jobs.
> >
> > v3: remove ring->num_jobs.
> > v2: remove ring->priority_mutex.
> >
> > Fixes: 33abcb1f5a17 ("drm/amdgpu: set compute queue priority at mqd_init")
> > Signed-off-by: Nirmoy Das <nirmoy.das@xxxxxxx>
>
> Reviewed-by: Christian König <christian.koenig@xxxxxxx> for patch #1, #3
> and #4.
>
> Maybe ping Alex for an rb on patch #2.

Series looks good to me too.  Maybe add something to the commit
message for patch 3 to explain why we don't need this on gfx10 so
someone doesn't try and make the change there in the future.  With
that fixes series is:
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>

Alex



>
> Christian.
>
> > ---
> >   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c | 8 ++------
> >   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h | 6 +-----
> >   2 files changed, 3 insertions(+), 11 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
> > index 1a612f51ecd9..b644c78475fd 100644
> > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
> > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
> > @@ -166,7 +166,7 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,
> >                    unsigned int max_dw, struct amdgpu_irq_src *irq_src,
> >                    unsigned int irq_type, unsigned int hw_prio)
> >   {
> > -     int r, i;
> > +     int r;
> >       int sched_hw_submission = amdgpu_sched_hw_submission;
> >       u32 *num_sched;
> >       u32 hw_ip;
> > @@ -258,8 +258,7 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,
> >       }
> >
> >       ring->max_dw = max_dw;
> > -     ring->priority = DRM_SCHED_PRIORITY_NORMAL;
> > -     mutex_init(&ring->priority_mutex);
> > +     ring->hw_prio = hw_prio;
> >
> >       if (!ring->no_scheduler) {
> >               hw_ip = ring->funcs->type;
> > @@ -268,9 +267,6 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,
> >                       &ring->sched;
> >       }
> >
> > -     for (i = DRM_SCHED_PRIORITY_MIN; i < DRM_SCHED_PRIORITY_COUNT; ++i)
> > -             atomic_set(&ring->num_jobs[i], 0);
> > -
> >       return 0;
> >   }
> >
> > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
> > index 7112137689db..2ada80ce42f5 100644
> > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
> > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
> > @@ -242,11 +242,7 @@ struct amdgpu_ring {
> >       struct dma_fence        *vmid_wait;
> >       bool                    has_compute_vm_bug;
> >       bool                    no_scheduler;
> > -
> > -     atomic_t                num_jobs[DRM_SCHED_PRIORITY_COUNT];
> > -     struct mutex            priority_mutex;
> > -     /* protected by priority_mutex */
> > -     int                     priority;
> > +     int                     hw_prio;
> >
> >   #if defined(CONFIG_DEBUG_FS)
> >       struct dentry *ent;
>
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