[Intel-gfx] [PATCH 1/3] drm/ttm: s/FLAG_SG/FLAG_EXTERNAL/
Matthew Auld
matthew.william.auld at gmail.com
Thu Sep 30 08:20:11 UTC 2021
On Thu, 30 Sept 2021 at 08:45, Christian König <christian.koenig at amd.com> wrote:
>
> Am 30.09.21 um 09:42 schrieb Matthew Auld:
> > On Thu, 30 Sept 2021 at 08:28, Christian König <christian.koenig at amd.com> wrote:
> >> I pushed those to drm-misc-next and fixed the i915 merge fallout in drm-tip.
> >>
> >> Maybe take another look at the resolution in drm-tip if you have time.
> > Thanks, although it looks like there is some breakage in the build on drm-tip:
> >
> > drivers/gpu/drm/ttm/ttm_bo_util.c: In function ‘ttm_bo_move_memcpy’:
> > drivers/gpu/drm/ttm/ttm_bo_util.c:172:44: error:
> > ‘TTM_PAGE_FLAG_ZERO_ALLOC’ undeclared (first use in this function);
> > did you mean ‘TTM_TT_FLAG_ZERO_ALLOC’?
> > 172 | if (!(clear && ttm && !(ttm->page_flags & TTM_PAGE_FLAG_ZERO_ALLOC)))
> >
> > ...
> >
> > drivers/gpu/drm/i915/gem/i915_gem_ttm.c: In function ‘i915_ttm_move’:
> > drivers/gpu/drm/i915/gem/i915_gem_ttm.c:576:44: error:
> > ‘TTM_PAGE_FLAG_ZERO_ALLOC’ undeclared (first use in this function);
> > did you mean ‘TTM_TT_FLAG_ZERO_ALLOC’?
> > 576 | if (!(clear && ttm && !(ttm->page_flags & TTM_PAGE_FLAG_ZERO_ALLOC)))
> > | ^~~~~~~~~~~~~~~~~~~~~~~~
> > | TTM_TT_FLAG_ZERO_ALLOC
> >
>
> Crap, I hoped that I got all of those.
>
> > Do we just need to revert the bad commit in drm-rerere, rebuild tip,
> > and try again? If so I can try to attempt this.
>
> Yes, please do so. I can't easily build drm-tip, would need to setup
> another box extra for this.
Ok, hopefully sorted now.
>
> Christian.
>
> >
> >> Christian.
> >>
> >> Am 29.09.21 um 15:26 schrieb Matthew Auld:
> >>> It covers more than just ttm_bo_type_sg usage, like with say dma-buf,
> >>> since one other user is userptr in amdgpu, and in the future we might
> >>> have some more. Hence EXTERNAL is likely a more suitable name.
> >>>
> >>> v2(Christian):
> >>> - Rename these to TTM_TT_FLAGS_*
> >>> - Fix up all the holes in the flag values
> >>>
> >>> Suggested-by: Christian König <christian.koenig at amd.com>
> >>> Signed-off-by: Matthew Auld <matthew.auld at intel.com>
> >>> Cc: Thomas Hellström <thomas.hellstrom at linux.intel.com>
> >>> Cc: Christian König <christian.koenig at amd.com>
> >>> Acked-by: Christian König <christian.koenig at amd.com>
> >>> ---
> >>> drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 10 +++++-----
> >>> drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 6 +++---
> >>> drivers/gpu/drm/nouveau/nouveau_bo.c | 4 ++--
> >>> drivers/gpu/drm/radeon/radeon_ttm.c | 8 ++++----
> >>> drivers/gpu/drm/ttm/ttm_bo.c | 4 ++--
> >>> drivers/gpu/drm/ttm/ttm_bo_util.c | 4 ++--
> >>> drivers/gpu/drm/ttm/ttm_bo_vm.c | 2 +-
> >>> drivers/gpu/drm/ttm/ttm_pool.c | 2 +-
> >>> drivers/gpu/drm/ttm/ttm_tt.c | 24 ++++++++++++------------
> >>> include/drm/ttm/ttm_device.h | 2 +-
> >>> include/drm/ttm/ttm_tt.h | 18 +++++++++---------
> >>> 11 files changed, 42 insertions(+), 42 deletions(-)
> >>>
> >>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> >>> index 60b12bb55244..e8d70b6e6737 100644
> >>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> >>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> >>> @@ -894,7 +894,7 @@ static int amdgpu_ttm_backend_bind(struct ttm_device *bdev,
> >>> DRM_ERROR("failed to pin userptr\n");
> >>> return r;
> >>> }
> >>> - } else if (ttm->page_flags & TTM_PAGE_FLAG_SG) {
> >>> + } else if (ttm->page_flags & TTM_TT_FLAG_EXTERNAL) {
> >>> if (!ttm->sg) {
> >>> struct dma_buf_attachment *attach;
> >>> struct sg_table *sgt;
> >>> @@ -1130,7 +1130,7 @@ static int amdgpu_ttm_tt_populate(struct ttm_device *bdev,
> >>> return 0;
> >>> }
> >>>
> >>> - if (ttm->page_flags & TTM_PAGE_FLAG_SG)
> >>> + if (ttm->page_flags & TTM_TT_FLAG_EXTERNAL)
> >>> return 0;
> >>>
> >>> ret = ttm_pool_alloc(&adev->mman.bdev.pool, ttm, ctx);
> >>> @@ -1165,7 +1165,7 @@ static void amdgpu_ttm_tt_unpopulate(struct ttm_device *bdev,
> >>> return;
> >>> }
> >>>
> >>> - if (ttm->page_flags & TTM_PAGE_FLAG_SG)
> >>> + if (ttm->page_flags & TTM_TT_FLAG_EXTERNAL)
> >>> return;
> >>>
> >>> for (i = 0; i < ttm->num_pages; ++i)
> >>> @@ -1198,8 +1198,8 @@ int amdgpu_ttm_tt_set_userptr(struct ttm_buffer_object *bo,
> >>> return -ENOMEM;
> >>> }
> >>>
> >>> - /* Set TTM_PAGE_FLAG_SG before populate but after create. */
> >>> - bo->ttm->page_flags |= TTM_PAGE_FLAG_SG;
> >>> + /* Set TTM_TT_FLAG_EXTERNAL before populate but after create. */
> >>> + bo->ttm->page_flags |= TTM_TT_FLAG_EXTERNAL;
> >>>
> >>> gtt = (void *)bo->ttm;
> >>> gtt->userptr = addr;
> >>> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
> >>> index f0a61a9474fc..8beef57ba52b 100644
> >>> --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
> >>> +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
> >>> @@ -182,7 +182,7 @@ static struct ttm_tt *i915_ttm_tt_create(struct ttm_buffer_object *bo,
> >>>
> >>> if (obj->flags & I915_BO_ALLOC_CPU_CLEAR &&
> >>> man->use_tt)
> >>> - page_flags |= TTM_PAGE_FLAG_ZERO_ALLOC;
> >>> + page_flags |= TTM_TT_FLAG_ZERO_ALLOC;
> >>>
> >>> ret = ttm_tt_init(&i915_tt->ttm, bo, page_flags,
> >>> i915_ttm_select_tt_caching(obj));
> >>> @@ -451,7 +451,7 @@ static int i915_ttm_accel_move(struct ttm_buffer_object *bo,
> >>> if (bo->type == ttm_bo_type_kernel)
> >>> return -EINVAL;
> >>>
> >>> - if (ttm && !(ttm->page_flags & TTM_PAGE_FLAG_ZERO_ALLOC))
> >>> + if (ttm && !(ttm->page_flags & TTM_TT_FLAG_ZERO_ALLOC))
> >>> return 0;
> >>>
> >>> intel_engine_pm_get(i915->gt.migrate.context->engine);
> >>> @@ -525,7 +525,7 @@ static int i915_ttm_move(struct ttm_buffer_object *bo, bool evict,
> >>>
> >>> /* Populate ttm with pages if needed. Typically system memory. */
> >>> if (bo->ttm && (dst_man->use_tt ||
> >>> - (bo->ttm->page_flags & TTM_PAGE_FLAG_SWAPPED))) {
> >>> + (bo->ttm->page_flags & TTM_TT_FLAG_SWAPPED))) {
> >>> ret = ttm_tt_populate(bo->bdev, bo->ttm, ctx);
> >>> if (ret)
> >>> return ret;
> >>> diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
> >>> index 33dca2565cca..b2c7e0802ac3 100644
> >>> --- a/drivers/gpu/drm/nouveau/nouveau_bo.c
> >>> +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
> >>> @@ -1249,7 +1249,7 @@ nouveau_ttm_tt_populate(struct ttm_device *bdev,
> >>> struct ttm_tt *ttm_dma = (void *)ttm;
> >>> struct nouveau_drm *drm;
> >>> struct device *dev;
> >>> - bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
> >>> + bool slave = !!(ttm->page_flags & TTM_TT_FLAG_EXTERNAL);
> >>>
> >>> if (ttm_tt_is_populated(ttm))
> >>> return 0;
> >>> @@ -1272,7 +1272,7 @@ nouveau_ttm_tt_unpopulate(struct ttm_device *bdev,
> >>> {
> >>> struct nouveau_drm *drm;
> >>> struct device *dev;
> >>> - bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
> >>> + bool slave = !!(ttm->page_flags & TTM_TT_FLAG_EXTERNAL);
> >>>
> >>> if (slave)
> >>> return;
> >>> diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
> >>> index 7793249bc549..11b21d605584 100644
> >>> --- a/drivers/gpu/drm/radeon/radeon_ttm.c
> >>> +++ b/drivers/gpu/drm/radeon/radeon_ttm.c
> >>> @@ -545,14 +545,14 @@ static int radeon_ttm_tt_populate(struct ttm_device *bdev,
> >>> {
> >>> struct radeon_device *rdev = radeon_get_rdev(bdev);
> >>> struct radeon_ttm_tt *gtt = radeon_ttm_tt_to_gtt(rdev, ttm);
> >>> - bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
> >>> + bool slave = !!(ttm->page_flags & TTM_TT_FLAG_EXTERNAL);
> >>>
> >>> if (gtt && gtt->userptr) {
> >>> ttm->sg = kzalloc(sizeof(struct sg_table), GFP_KERNEL);
> >>> if (!ttm->sg)
> >>> return -ENOMEM;
> >>>
> >>> - ttm->page_flags |= TTM_PAGE_FLAG_SG;
> >>> + ttm->page_flags |= TTM_TT_FLAG_EXTERNAL;
> >>> return 0;
> >>> }
> >>>
> >>> @@ -569,13 +569,13 @@ static void radeon_ttm_tt_unpopulate(struct ttm_device *bdev, struct ttm_tt *ttm
> >>> {
> >>> struct radeon_device *rdev = radeon_get_rdev(bdev);
> >>> struct radeon_ttm_tt *gtt = radeon_ttm_tt_to_gtt(rdev, ttm);
> >>> - bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
> >>> + bool slave = !!(ttm->page_flags & TTM_TT_FLAG_EXTERNAL);
> >>>
> >>> radeon_ttm_tt_unbind(bdev, ttm);
> >>>
> >>> if (gtt && gtt->userptr) {
> >>> kfree(ttm->sg);
> >>> - ttm->page_flags &= ~TTM_PAGE_FLAG_SG;
> >>> + ttm->page_flags &= ~TTM_TT_FLAG_EXTERNAL;
> >>> return;
> >>> }
> >>>
> >>> diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
> >>> index 3b22c0013dbf..d62b2013c367 100644
> >>> --- a/drivers/gpu/drm/ttm/ttm_bo.c
> >>> +++ b/drivers/gpu/drm/ttm/ttm_bo.c
> >>> @@ -1115,8 +1115,8 @@ int ttm_bo_swapout(struct ttm_buffer_object *bo, struct ttm_operation_ctx *ctx,
> >>> return -EBUSY;
> >>>
> >>> if (!bo->ttm || !ttm_tt_is_populated(bo->ttm) ||
> >>> - bo->ttm->page_flags & TTM_PAGE_FLAG_SG ||
> >>> - bo->ttm->page_flags & TTM_PAGE_FLAG_SWAPPED ||
> >>> + bo->ttm->page_flags & TTM_TT_FLAG_EXTERNAL ||
> >>> + bo->ttm->page_flags & TTM_TT_FLAG_SWAPPED ||
> >>> !ttm_bo_get_unless_zero(bo)) {
> >>> if (locked)
> >>> dma_resv_unlock(bo->base.resv);
> >>> diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c
> >>> index 1c5ffe2935af..82af095f6b81 100644
> >>> --- a/drivers/gpu/drm/ttm/ttm_bo_util.c
> >>> +++ b/drivers/gpu/drm/ttm/ttm_bo_util.c
> >>> @@ -103,7 +103,7 @@ void ttm_move_memcpy(struct ttm_buffer_object *bo,
> >>>
> >>> /* Don't move nonexistent data. Clear destination instead. */
> >>> if (src_ops->maps_tt && (!ttm || !ttm_tt_is_populated(ttm))) {
> >>> - if (ttm && !(ttm->page_flags & TTM_PAGE_FLAG_ZERO_ALLOC))
> >>> + if (ttm && !(ttm->page_flags & TTM_TT_FLAG_ZERO_ALLOC))
> >>> return;
> >>>
> >>> for (i = 0; i < num_pages; ++i) {
> >>> @@ -150,7 +150,7 @@ int ttm_bo_move_memcpy(struct ttm_buffer_object *bo,
> >>> struct ttm_kmap_iter *dst_iter, *src_iter;
> >>> int ret = 0;
> >>>
> >>> - if (ttm && ((ttm->page_flags & TTM_PAGE_FLAG_SWAPPED) ||
> >>> + if (ttm && ((ttm->page_flags & TTM_TT_FLAG_SWAPPED) ||
> >>> dst_man->use_tt)) {
> >>> ret = ttm_tt_populate(bdev, ttm, ctx);
> >>> if (ret)
> >>> diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c
> >>> index 9a2119fe4bdd..950f4f132802 100644
> >>> --- a/drivers/gpu/drm/ttm/ttm_bo_vm.c
> >>> +++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c
> >>> @@ -162,7 +162,7 @@ vm_fault_t ttm_bo_vm_reserve(struct ttm_buffer_object *bo,
> >>> * Refuse to fault imported pages. This should be handled
> >>> * (if at all) by redirecting mmap to the exporter.
> >>> */
> >>> - if (bo->ttm && (bo->ttm->page_flags & TTM_PAGE_FLAG_SG)) {
> >>> + if (bo->ttm && (bo->ttm->page_flags & TTM_TT_FLAG_EXTERNAL)) {
> >>> dma_resv_unlock(bo->base.resv);
> >>> return VM_FAULT_SIGBUS;
> >>> }
> >>> diff --git a/drivers/gpu/drm/ttm/ttm_pool.c b/drivers/gpu/drm/ttm/ttm_pool.c
> >>> index c961a788b519..1bba0a0ed3f9 100644
> >>> --- a/drivers/gpu/drm/ttm/ttm_pool.c
> >>> +++ b/drivers/gpu/drm/ttm/ttm_pool.c
> >>> @@ -371,7 +371,7 @@ int ttm_pool_alloc(struct ttm_pool *pool, struct ttm_tt *tt,
> >>> WARN_ON(!num_pages || ttm_tt_is_populated(tt));
> >>> WARN_ON(dma_addr && !pool->dev);
> >>>
> >>> - if (tt->page_flags & TTM_PAGE_FLAG_ZERO_ALLOC)
> >>> + if (tt->page_flags & TTM_TT_FLAG_ZERO_ALLOC)
> >>> gfp_flags |= __GFP_ZERO;
> >>>
> >>> if (ctx->gfp_retry_mayfail)
> >>> diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
> >>> index 980ecb079b2c..86f31fde6e35 100644
> >>> --- a/drivers/gpu/drm/ttm/ttm_tt.c
> >>> +++ b/drivers/gpu/drm/ttm/ttm_tt.c
> >>> @@ -68,12 +68,12 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc)
> >>> switch (bo->type) {
> >>> case ttm_bo_type_device:
> >>> if (zero_alloc)
> >>> - page_flags |= TTM_PAGE_FLAG_ZERO_ALLOC;
> >>> + page_flags |= TTM_TT_FLAG_ZERO_ALLOC;
> >>> break;
> >>> case ttm_bo_type_kernel:
> >>> break;
> >>> case ttm_bo_type_sg:
> >>> - page_flags |= TTM_PAGE_FLAG_SG;
> >>> + page_flags |= TTM_TT_FLAG_EXTERNAL;
> >>> break;
> >>> default:
> >>> pr_err("Illegal buffer object type\n");
> >>> @@ -156,7 +156,7 @@ EXPORT_SYMBOL(ttm_tt_init);
> >>>
> >>> void ttm_tt_fini(struct ttm_tt *ttm)
> >>> {
> >>> - WARN_ON(ttm->page_flags & TTM_PAGE_FLAG_PRIV_POPULATED);
> >>> + WARN_ON(ttm->page_flags & TTM_TT_FLAG_PRIV_POPULATED);
> >>>
> >>> if (ttm->swap_storage)
> >>> fput(ttm->swap_storage);
> >>> @@ -178,7 +178,7 @@ int ttm_sg_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo,
> >>>
> >>> ttm_tt_init_fields(ttm, bo, page_flags, caching);
> >>>
> >>> - if (page_flags & TTM_PAGE_FLAG_SG)
> >>> + if (page_flags & TTM_TT_FLAG_EXTERNAL)
> >>> ret = ttm_sg_tt_alloc_page_directory(ttm);
> >>> else
> >>> ret = ttm_dma_tt_alloc_page_directory(ttm);
> >>> @@ -224,7 +224,7 @@ int ttm_tt_swapin(struct ttm_tt *ttm)
> >>>
> >>> fput(swap_storage);
> >>> ttm->swap_storage = NULL;
> >>> - ttm->page_flags &= ~TTM_PAGE_FLAG_SWAPPED;
> >>> + ttm->page_flags &= ~TTM_TT_FLAG_SWAPPED;
> >>>
> >>> return 0;
> >>>
> >>> @@ -279,7 +279,7 @@ int ttm_tt_swapout(struct ttm_device *bdev, struct ttm_tt *ttm,
> >>>
> >>> ttm_tt_unpopulate(bdev, ttm);
> >>> ttm->swap_storage = swap_storage;
> >>> - ttm->page_flags |= TTM_PAGE_FLAG_SWAPPED;
> >>> + ttm->page_flags |= TTM_TT_FLAG_SWAPPED;
> >>>
> >>> return ttm->num_pages;
> >>>
> >>> @@ -300,7 +300,7 @@ int ttm_tt_populate(struct ttm_device *bdev,
> >>> if (ttm_tt_is_populated(ttm))
> >>> return 0;
> >>>
> >>> - if (!(ttm->page_flags & TTM_PAGE_FLAG_SG)) {
> >>> + if (!(ttm->page_flags & TTM_TT_FLAG_EXTERNAL)) {
> >>> atomic_long_add(ttm->num_pages, &ttm_pages_allocated);
> >>> if (bdev->pool.use_dma32)
> >>> atomic_long_add(ttm->num_pages,
> >>> @@ -325,8 +325,8 @@ int ttm_tt_populate(struct ttm_device *bdev,
> >>> if (ret)
> >>> goto error;
> >>>
> >>> - ttm->page_flags |= TTM_PAGE_FLAG_PRIV_POPULATED;
> >>> - if (unlikely(ttm->page_flags & TTM_PAGE_FLAG_SWAPPED)) {
> >>> + ttm->page_flags |= TTM_TT_FLAG_PRIV_POPULATED;
> >>> + if (unlikely(ttm->page_flags & TTM_TT_FLAG_SWAPPED)) {
> >>> ret = ttm_tt_swapin(ttm);
> >>> if (unlikely(ret != 0)) {
> >>> ttm_tt_unpopulate(bdev, ttm);
> >>> @@ -337,7 +337,7 @@ int ttm_tt_populate(struct ttm_device *bdev,
> >>> return 0;
> >>>
> >>> error:
> >>> - if (!(ttm->page_flags & TTM_PAGE_FLAG_SG)) {
> >>> + if (!(ttm->page_flags & TTM_TT_FLAG_EXTERNAL)) {
> >>> atomic_long_sub(ttm->num_pages, &ttm_pages_allocated);
> >>> if (bdev->pool.use_dma32)
> >>> atomic_long_sub(ttm->num_pages,
> >>> @@ -357,14 +357,14 @@ void ttm_tt_unpopulate(struct ttm_device *bdev, struct ttm_tt *ttm)
> >>> else
> >>> ttm_pool_free(&bdev->pool, ttm);
> >>>
> >>> - if (!(ttm->page_flags & TTM_PAGE_FLAG_SG)) {
> >>> + if (!(ttm->page_flags & TTM_TT_FLAG_EXTERNAL)) {
> >>> atomic_long_sub(ttm->num_pages, &ttm_pages_allocated);
> >>> if (bdev->pool.use_dma32)
> >>> atomic_long_sub(ttm->num_pages,
> >>> &ttm_dma32_pages_allocated);
> >>> }
> >>>
> >>> - ttm->page_flags &= ~TTM_PAGE_FLAG_PRIV_POPULATED;
> >>> + ttm->page_flags &= ~TTM_TT_FLAG_PRIV_POPULATED;
> >>> }
> >>>
> >>> #ifdef CONFIG_DEBUG_FS
> >>> diff --git a/include/drm/ttm/ttm_device.h b/include/drm/ttm/ttm_device.h
> >>> index cbe03d45e883..0a4ddec78d8f 100644
> >>> --- a/include/drm/ttm/ttm_device.h
> >>> +++ b/include/drm/ttm/ttm_device.h
> >>> @@ -65,7 +65,7 @@ struct ttm_device_funcs {
> >>> * ttm_tt_create
> >>> *
> >>> * @bo: The buffer object to create the ttm for.
> >>> - * @page_flags: Page flags as identified by TTM_PAGE_FLAG_XX flags.
> >>> + * @page_flags: Page flags as identified by TTM_TT_FLAG_XX flags.
> >>> *
> >>> * Create a struct ttm_tt to back data with system memory pages.
> >>> * No pages are actually allocated.
> >>> diff --git a/include/drm/ttm/ttm_tt.h b/include/drm/ttm/ttm_tt.h
> >>> index 842ce756213c..b023cd58ff38 100644
> >>> --- a/include/drm/ttm/ttm_tt.h
> >>> +++ b/include/drm/ttm/ttm_tt.h
> >>> @@ -38,17 +38,17 @@ struct ttm_resource;
> >>> struct ttm_buffer_object;
> >>> struct ttm_operation_ctx;
> >>>
> >>> -#define TTM_PAGE_FLAG_SWAPPED (1 << 4)
> >>> -#define TTM_PAGE_FLAG_ZERO_ALLOC (1 << 6)
> >>> -#define TTM_PAGE_FLAG_SG (1 << 8)
> >>> +#define TTM_TT_FLAG_SWAPPED (1 << 0)
> >>> +#define TTM_TT_FLAG_ZERO_ALLOC (1 << 1)
> >>> +#define TTM_TT_FLAG_EXTERNAL (1 << 2)
> >>>
> >>> -#define TTM_PAGE_FLAG_PRIV_POPULATED (1 << 31)
> >>> +#define TTM_TT_FLAG_PRIV_POPULATED (1 << 31)
> >>>
> >>> /**
> >>> * struct ttm_tt
> >>> *
> >>> * @pages: Array of pages backing the data.
> >>> - * @page_flags: see TTM_PAGE_FLAG_*
> >>> + * @page_flags: see TTM_TT_FLAG_*
> >>> * @num_pages: Number of pages in the page array.
> >>> * @sg: for SG objects via dma-buf
> >>> * @dma_address: The DMA (bus) addresses of the pages
> >>> @@ -84,7 +84,7 @@ struct ttm_kmap_iter_tt {
> >>>
> >>> static inline bool ttm_tt_is_populated(struct ttm_tt *tt)
> >>> {
> >>> - return tt->page_flags & TTM_PAGE_FLAG_PRIV_POPULATED;
> >>> + return tt->page_flags & TTM_TT_FLAG_PRIV_POPULATED;
> >>> }
> >>>
> >>> /**
> >>> @@ -103,7 +103,7 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc);
> >>> *
> >>> * @ttm: The struct ttm_tt.
> >>> * @bo: The buffer object we create the ttm for.
> >>> - * @page_flags: Page flags as identified by TTM_PAGE_FLAG_XX flags.
> >>> + * @page_flags: Page flags as identified by TTM_TT_FLAG_XX flags.
> >>> * @caching: the desired caching state of the pages
> >>> *
> >>> * Create a struct ttm_tt to back data with system memory pages.
> >>> @@ -178,7 +178,7 @@ void ttm_tt_unpopulate(struct ttm_device *bdev, struct ttm_tt *ttm);
> >>> */
> >>> static inline void ttm_tt_mark_for_clear(struct ttm_tt *ttm)
> >>> {
> >>> - ttm->page_flags |= TTM_PAGE_FLAG_ZERO_ALLOC;
> >>> + ttm->page_flags |= TTM_TT_FLAG_ZERO_ALLOC;
> >>> }
> >>>
> >>> void ttm_tt_mgr_init(unsigned long num_pages, unsigned long num_dma32_pages);
> >>> @@ -194,7 +194,7 @@ struct ttm_kmap_iter *ttm_kmap_iter_tt_init(struct ttm_kmap_iter_tt *iter_tt,
> >>> *
> >>> * @bo: Buffer object we allocate the ttm for.
> >>> * @bridge: The agp bridge this device is sitting on.
> >>> - * @page_flags: Page flags as identified by TTM_PAGE_FLAG_XX flags.
> >>> + * @page_flags: Page flags as identified by TTM_TT_FLAG_XX flags.
> >>> *
> >>> *
> >>> * Create a TTM backend that uses the indicated AGP bridge as an aperture
>
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