On Wed, Jun 28, 2017 at 03:06:47PM +0200, Christian König wrote:
> Am 28.06.2017 um 04:33 schrieb John Brooks:
> >Signed-off-by: John Brooks <john@xxxxxxxxxxxxx>
> >---
> > drivers/gpu/drm/amd/amdgpu/amdgpu.h | 3 +++
> > drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 5 +++++
> > drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 2 ++
> > 3 files changed, 10 insertions(+)
> >
> >diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> >index 7366115..34c293a 100644
> >--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> >+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> >@@ -428,6 +428,9 @@ struct amdgpu_bo {
> > void *metadata;
> > u32 metadata_size;
> > unsigned prime_shared_count;
> >+ unsigned long last_page_fault_jiffies;
> >+ unsigned long last_cs_move_jiffies;
>
> Please use jiffies64 here, apart from that the patch looks good to me.
>
> Christian.
>
I'm not sure I understand. Do you mean change these variables to u64 and use
get_jiffies_64() instead of the plain jiffies variable below? I believe
jiffies_64 can be slower than jiffies also.
John
> >+
> > /* list of all virtual address to which this bo
> > * is associated to
> > */
> >diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> >index 1dfa847..071b592 100644
> >--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> >+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> >@@ -335,6 +335,7 @@ static int amdgpu_cs_bo_validate(struct amdgpu_cs_parser *p,
> > struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
> > u64 initial_bytes_moved, bytes_moved;
> > uint32_t domain;
> >+ uint32_t old_mem;
> > int r;
> > if (bo->pin_count)
> >@@ -364,6 +365,7 @@ static int amdgpu_cs_bo_validate(struct amdgpu_cs_parser *p,
> > retry:
> > amdgpu_ttm_placement_from_domain(bo, domain);
> > initial_bytes_moved = atomic64_read(&adev->num_bytes_moved);
> >+ old_mem = bo->tbo.mem.mem_type;
> > r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false);
> > bytes_moved = atomic64_read(&adev->num_bytes_moved) -
> > initial_bytes_moved;
> >@@ -377,6 +379,9 @@ static int amdgpu_cs_bo_validate(struct amdgpu_cs_parser *p,
> > goto retry;
> > }
> >+ if (bo->tbo.mem.mem_type != old_mem)
> >+ bo->last_cs_move_jiffies = jiffies;
> >+
> > return r;
> > }
> >diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> >index dcf1ddb..b71775c 100644
> >--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> >+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> >@@ -953,6 +953,8 @@ int amdgpu_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
> > if (bo->mem.mem_type != TTM_PL_VRAM)
> > return 0;
> >+ abo->last_page_fault_jiffies = jiffies;
> >+
> > size = bo->mem.num_pages << PAGE_SHIFT;
> > offset = bo->mem.start << PAGE_SHIFT;
> > /* TODO: figure out how to map scattered VRAM to the CPU */
>
>
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