[PATCH] drm/amdgpu: clean up the superfluous space and align the comment text for amdgpu_ttm
Huang Rui
ray.huang at amd.com
Fri Jul 27 06:56:59 UTC 2018
On Thu, Jul 26, 2018 at 02:41:17PM +0800, Christian König wrote:
> Am 26.07.2018 um 08:11 schrieb Huang Rui:
> > This patch cleans up spaces and algin the text to refine the comment for
> > amdgpu_ttm.
> >
> > Signed-off-by: Huang Rui <ray.huang at amd.com>
>
> Yeah, that was also on my TODO list for a while.
My pleasure if I can help you do something.
>
> Patch is Reviewed-by: Christian König <christian.koenig at amd.com>, but
> please make sure that the result of "make htmldocs" now looks like it
> should.
preparing documents... done
WARNING: dvipng command 'dvipng' cannot be run (needed for math display),
check the pngmath_dvipng setting
writing output... [100%] vm/zswap
generating indices... genindex
writing additional pages... search
copying images... [100%] media/uapi/v4l/vbi_525.svg
copying static files... done
copying extra files... done
dumping search index in English (code: en) ... done
dumping object inventory... done
build succeeded, 77 warnings.
I built "make htmldocs", it seems succefully. Then use browser to access
below path, right?
SPHINX htmldocs --> file:///home/ray/linux/Documentation/output
If yes, it's strange I cannot see anything from the browser.
Thanks,
Ray
>
> Thanks,
> Christian.
>
> > ---
> > drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 107 +++++++++++++++-----------------
> > 1 file changed, 51 insertions(+), 56 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> > index 8ed1029..a21eb74 100644
> > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> > @@ -92,11 +92,9 @@ static void amdgpu_ttm_mem_global_release(struct drm_global_reference *ref)
> > }
> >
> > /**
> > - * amdgpu_ttm_global_init - Initialize global TTM memory reference
> > - * structures.
> > + * amdgpu_ttm_global_init - Initialize global TTM memory reference structures.
> > *
> > - * @adev: AMDGPU device for which the global structures need to be
> > - * registered.
> > + * @adev: AMDGPU device for which the global structures need to be registered.
> > *
> > * This is called as part of the AMDGPU ttm init from amdgpu_ttm_init()
> > * during bring up.
> > @@ -162,13 +160,12 @@ static int amdgpu_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
> > }
> >
> > /**
> > - * amdgpu_init_mem_type - Initialize a memory manager for a specific
> > - * type of memory request.
> > + * amdgpu_init_mem_type - Initialize a memory manager for a specific type of
> > + * memory request.
> > *
> > - * @bdev: The TTM BO device object (contains a reference to
> > - * amdgpu_device)
> > - * @type: The type of memory requested
> > - * @man:
> > + * @bdev: The TTM BO device object (contains a reference to amdgpu_device)
> > + * @type: The type of memory requested
> > + * @man: The memory type manager for each domain
> > *
> > * This is called by ttm_bo_init_mm() when a buffer object is being
> > * initialized.
> > @@ -292,8 +289,8 @@ static void amdgpu_evict_flags(struct ttm_buffer_object *bo,
> > /**
> > * amdgpu_verify_access - Verify access for a mmap call
> > *
> > - * @bo: The buffer object to map
> > - * @filp: The file pointer from the process performing the mmap
> > + * @bo: The buffer object to map
> > + * @filp: The file pointer from the process performing the mmap
> > *
> > * This is called by ttm_bo_mmap() to verify whether a process
> > * has the right to mmap a BO to their process space.
> > @@ -318,11 +315,10 @@ static int amdgpu_verify_access(struct ttm_buffer_object *bo, struct file *filp)
> > /**
> > * amdgpu_move_null - Register memory for a buffer object
> > *
> > - * @bo: The bo to assign the memory to
> > - * @new_mem: The memory to be assigned.
> > + * @bo: The bo to assign the memory to
> > + * @new_mem: The memory to be assigned.
> > *
> > - * Assign the memory from new_mem to the memory of the buffer object
> > - * bo.
> > + * Assign the memory from new_mem to the memory of the buffer object bo.
> > */
> > static void amdgpu_move_null(struct ttm_buffer_object *bo,
> > struct ttm_mem_reg *new_mem)
> > @@ -335,8 +331,12 @@ static void amdgpu_move_null(struct ttm_buffer_object *bo,
> > }
> >
> > /**
> > - * amdgpu_mm_node_addr - Compute the GPU relative offset of a GTT
> > - * buffer.
> > + * amdgpu_mm_node_addr - Compute the GPU relative offset of a GTT buffer.
> > + *
> > + * @bo: The bo to assign the memory to.
> > + * @mm_node: Memory manager node for drm allocator.
> > + * @mem: The region where the bo resides.
> > + *
> > */
> > static uint64_t amdgpu_mm_node_addr(struct ttm_buffer_object *bo,
> > struct drm_mm_node *mm_node,
> > @@ -352,10 +352,12 @@ static uint64_t amdgpu_mm_node_addr(struct ttm_buffer_object *bo,
> > }
> >
> > /**
> > - * amdgpu_find_mm_node - Helper function finds the drm_mm_node
> > - * corresponding to @offset. It also modifies
> > - * the offset to be within the drm_mm_node
> > - * returned
> > + * amdgpu_find_mm_node - Helper function finds the drm_mm_node corresponding to
> > + * @offset. It also modifies the offset to be within the drm_mm_node returned
> > + *
> > + * @mem: The region where the bo resides.
> > + * @offset: The offset that drm_mm_node is used for finding.
> > + *
> > */
> > static struct drm_mm_node *amdgpu_find_mm_node(struct ttm_mem_reg *mem,
> > unsigned long *offset)
> > @@ -497,8 +499,8 @@ int amdgpu_ttm_copy_mem_to_mem(struct amdgpu_device *adev,
> > /**
> > * amdgpu_move_blit - Copy an entire buffer to another buffer
> > *
> > - * This is a helper called by amdgpu_bo_move() and
> > - * amdgpu_move_vram_ram() to help move buffers to and from VRAM.
> > + * This is a helper called by amdgpu_bo_move() and amdgpu_move_vram_ram() to
> > + * help move buffers to and from VRAM.
> > */
> > static int amdgpu_move_blit(struct ttm_buffer_object *bo,
> > bool evict, bool no_wait_gpu,
> > @@ -794,8 +796,8 @@ struct amdgpu_ttm_tt {
> > };
> >
> > /**
> > - * amdgpu_ttm_tt_get_user_pages - Pin pages of memory pointed to
> > - * by a USERPTR pointer to memory
> > + * amdgpu_ttm_tt_get_user_pages - Pin pages of memory pointed to by a USERPTR
> > + * pointer to memory
> > *
> > * Called by amdgpu_gem_userptr_ioctl() and amdgpu_cs_parser_bos().
> > * This provides a wrapper around the get_user_pages() call to provide
> > @@ -818,8 +820,10 @@ int amdgpu_ttm_tt_get_user_pages(struct ttm_tt *ttm, struct page **pages)
> > down_read(&mm->mmap_sem);
> >
> > if (gtt->userflags & AMDGPU_GEM_USERPTR_ANONONLY) {
> > - /* check that we only use anonymous memory
> > - to prevent problems with writeback */
> > + /*
> > + * check that we only use anonymous memory to prevent problems
> > + * with writeback
> > + */
> > unsigned long end = gtt->userptr + ttm->num_pages * PAGE_SIZE;
> > struct vm_area_struct *vma;
> >
> > @@ -870,10 +874,9 @@ int amdgpu_ttm_tt_get_user_pages(struct ttm_tt *ttm, struct page **pages)
> > }
> >
> > /**
> > - * amdgpu_ttm_tt_set_user_pages - Copy pages in, putting old pages
> > - * as necessary.
> > + * amdgpu_ttm_tt_set_user_pages - Copy pages in, putting old pages as necessary.
> > *
> > - * Called by amdgpu_cs_list_validate(). This creates the page list
> > + * Called by amdgpu_cs_list_validate(). This creates the page list
> > * that backs user memory and will ultimately be mapped into the device
> > * address space.
> > */
> > @@ -915,8 +918,7 @@ void amdgpu_ttm_tt_mark_user_pages(struct ttm_tt *ttm)
> > }
> >
> > /**
> > - * amdgpu_ttm_tt_pin_userptr - prepare the sg table with the
> > - * user pages
> > + * amdgpu_ttm_tt_pin_userptr - prepare the sg table with the user pages
> > *
> > * Called by amdgpu_ttm_backend_bind()
> > **/
> > @@ -1295,8 +1297,8 @@ static void amdgpu_ttm_tt_unpopulate(struct ttm_tt *ttm)
> > }
> >
> > /**
> > - * amdgpu_ttm_tt_set_userptr - Initialize userptr GTT ttm_tt
> > - * for the current task
> > + * amdgpu_ttm_tt_set_userptr - Initialize userptr GTT ttm_tt for the current
> > + * task
> > *
> > * @ttm: The ttm_tt object to bind this userptr object to
> > * @addr: The address in the current tasks VM space to use
> > @@ -1346,9 +1348,8 @@ struct mm_struct *amdgpu_ttm_tt_get_usermm(struct ttm_tt *ttm)
> > }
> >
> > /**
> > - * amdgpu_ttm_tt_affect_userptr - Determine if a ttm_tt object lays
> > - * inside an address range for the
> > - * current task.
> > + * amdgpu_ttm_tt_affect_userptr - Determine if a ttm_tt object lays inside an
> > + * address range for the current task.
> > *
> > */
> > bool amdgpu_ttm_tt_affect_userptr(struct ttm_tt *ttm, unsigned long start,
> > @@ -1386,8 +1387,7 @@ bool amdgpu_ttm_tt_affect_userptr(struct ttm_tt *ttm, unsigned long start,
> > }
> >
> > /**
> > - * amdgpu_ttm_tt_userptr_invalidated - Has the ttm_tt object been
> > - * invalidated?
> > + * amdgpu_ttm_tt_userptr_invalidated - Has the ttm_tt object been invalidated?
> > */
> > bool amdgpu_ttm_tt_userptr_invalidated(struct ttm_tt *ttm,
> > int *last_invalidated)
> > @@ -1400,10 +1400,8 @@ bool amdgpu_ttm_tt_userptr_invalidated(struct ttm_tt *ttm,
> > }
> >
> > /**
> > - * amdgpu_ttm_tt_userptr_needs_pages - Have the pages backing this
> > - * ttm_tt object been invalidated
> > - * since the last time they've
> > - * been set?
> > + * amdgpu_ttm_tt_userptr_needs_pages - Have the pages backing this ttm_tt object
> > + * been invalidated since the last time they've been set?
> > */
> > bool amdgpu_ttm_tt_userptr_needs_pages(struct ttm_tt *ttm)
> > {
> > @@ -1459,13 +1457,12 @@ uint64_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm,
> > }
> >
> > /**
> > - * amdgpu_ttm_bo_eviction_valuable - Check to see if we can evict
> > - * a buffer object.
> > + * amdgpu_ttm_bo_eviction_valuable - Check to see if we can evict a buffer
> > + * object.
> > *
> > - * Return true if eviction is sensible. Called by
> > - * ttm_mem_evict_first() on behalf of ttm_bo_mem_force_space()
> > - * which tries to evict buffer objects until it can find space
> > - * for a new object and by ttm_bo_force_list_clean() which is
> > + * Return true if eviction is sensible. Called by ttm_mem_evict_first() on
> > + * behalf of ttm_bo_mem_force_space() which tries to evict buffer objects until
> > + * it can find space for a new object and by ttm_bo_force_list_clean() which is
> > * used to clean out a memory space.
> > */
> > static bool amdgpu_ttm_bo_eviction_valuable(struct ttm_buffer_object *bo,
> > @@ -1515,8 +1512,7 @@ static bool amdgpu_ttm_bo_eviction_valuable(struct ttm_buffer_object *bo,
> > }
> >
> > /**
> > - * amdgpu_ttm_access_memory - Read or Write memory that backs a
> > - * buffer object.
> > + * amdgpu_ttm_access_memory - Read or Write memory that backs a buffer object.
> > *
> > * @bo: The buffer object to read/write
> > * @offset: Offset into buffer object
> > @@ -1704,8 +1700,8 @@ static int amdgpu_ttm_fw_reserve_vram_init(struct amdgpu_device *adev)
> > return r;
> > }
> > /**
> > - * amdgpu_ttm_init - Init the memory management (ttm) as well as
> > - * various gtt/vram related fields.
> > + * amdgpu_ttm_init - Init the memory management (ttm) as well as various
> > + * gtt/vram related fields.
> > *
> > * This initializes all of the memory space pools that the TTM layer
> > * will need such as the GTT space (system memory mapped to the device),
> > @@ -1856,8 +1852,7 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
> > }
> >
> > /**
> > - * amdgpu_ttm_late_init - Handle any late initialization for
> > - * amdgpu_ttm
> > + * amdgpu_ttm_late_init - Handle any late initialization for amdgpu_ttm
> > */
> > void amdgpu_ttm_late_init(struct amdgpu_device *adev)
> > {
>
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