[PATCH 9/9] drm/omap: kill omap_gem_helpers.c
Daniel Vetter
daniel at ffwll.ch
Wed Aug 7 13:13:11 PDT 2013
On Wed, Aug 07, 2013 at 01:41:27PM -0400, Rob Clark wrote:
> Signed-off-by: Rob Clark <robdclark at gmail.com>
Patches 5-9 are Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> ---
> drivers/gpu/drm/omapdrm/Makefile | 3 -
> drivers/gpu/drm/omapdrm/omap_gem.c | 8 +-
> drivers/gpu/drm/omapdrm/omap_gem_helpers.c | 124 -----------------------------
> 3 files changed, 4 insertions(+), 131 deletions(-)
> delete mode 100644 drivers/gpu/drm/omapdrm/omap_gem_helpers.c
>
> diff --git a/drivers/gpu/drm/omapdrm/Makefile b/drivers/gpu/drm/omapdrm/Makefile
> index d85e058..778372b 100644
> --- a/drivers/gpu/drm/omapdrm/Makefile
> +++ b/drivers/gpu/drm/omapdrm/Makefile
> @@ -18,7 +18,4 @@ omapdrm-y := omap_drv.o \
> omap_dmm_tiler.o \
> tcm-sita.o
>
> -# temporary:
> -omapdrm-y += omap_gem_helpers.o
> -
> obj-$(CONFIG_DRM_OMAP) += omapdrm.o
> diff --git a/drivers/gpu/drm/omapdrm/omap_gem.c b/drivers/gpu/drm/omapdrm/omap_gem.c
> index f90531fc00..030af5a 100644
> --- a/drivers/gpu/drm/omapdrm/omap_gem.c
> +++ b/drivers/gpu/drm/omapdrm/omap_gem.c
> @@ -237,7 +237,7 @@ static int omap_gem_attach_pages(struct drm_gem_object *obj)
> * mapping_gfp_mask(mapping) which conflicts w/ GFP_DMA32.. probably
> * we actually want CMA memory for it all anyways..
> */
> - pages = _drm_gem_get_pages(obj, GFP_KERNEL);
> + pages = drm_gem_get_pages(obj, GFP_KERNEL);
> if (IS_ERR(pages)) {
> dev_err(obj->dev->dev, "could not get pages: %ld\n", PTR_ERR(pages));
> return PTR_ERR(pages);
> @@ -271,7 +271,7 @@ static int omap_gem_attach_pages(struct drm_gem_object *obj)
> return 0;
>
> free_pages:
> - _drm_gem_put_pages(obj, pages, true, false);
> + drm_gem_put_pages(obj, pages, true, false);
>
> return ret;
> }
> @@ -295,7 +295,7 @@ static void omap_gem_detach_pages(struct drm_gem_object *obj)
> kfree(omap_obj->addrs);
> omap_obj->addrs = NULL;
>
> - _drm_gem_put_pages(obj, omap_obj->pages, true, false);
> + drm_gem_put_pages(obj, omap_obj->pages, true, false);
> omap_obj->pages = NULL;
> }
>
> @@ -316,7 +316,7 @@ static uint64_t mmap_offset(struct drm_gem_object *obj)
>
> /* Make it mmapable */
> size = omap_gem_mmap_size(obj);
> - ret = _drm_gem_create_mmap_offset_size(obj, size);
> + ret = drm_gem_create_mmap_offset_size(obj, size);
> if (ret) {
> dev_err(dev->dev, "could not allocate mmap offset\n");
> return 0;
> diff --git a/drivers/gpu/drm/omapdrm/omap_gem_helpers.c b/drivers/gpu/drm/omapdrm/omap_gem_helpers.c
> deleted file mode 100644
> index dbb1575..0000000
> --- a/drivers/gpu/drm/omapdrm/omap_gem_helpers.c
> +++ /dev/null
> @@ -1,124 +0,0 @@
> -/*
> - * drivers/gpu/drm/omapdrm/omap_gem_helpers.c
> - *
> - * Copyright (C) 2011 Texas Instruments
> - * Author: Rob Clark <rob.clark at linaro.org>
> - *
> - * This program is free software; you can redistribute it and/or modify it
> - * under the terms of the GNU General Public License version 2 as published by
> - * the Free Software Foundation.
> - *
> - * This program is distributed in the hope that it will be useful, but WITHOUT
> - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
> - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
> - * more details.
> - *
> - * You should have received a copy of the GNU General Public License along with
> - * this program. If not, see <http://www.gnu.org/licenses/>.
> - */
> -
> -/* temporary copy of drm_gem_{get,put}_pages() until the
> - * "drm/gem: add functions to get/put pages" patch is merged..
> - */
> -
> -#include <linux/module.h>
> -#include <linux/types.h>
> -#include <linux/shmem_fs.h>
> -
> -#include <drm/drmP.h>
> -
> -/**
> - * drm_gem_get_pages - helper to allocate backing pages for a GEM object
> - * @obj: obj in question
> - * @gfpmask: gfp mask of requested pages
> - */
> -struct page **_drm_gem_get_pages(struct drm_gem_object *obj, gfp_t gfpmask)
> -{
> - struct inode *inode;
> - struct address_space *mapping;
> - struct page *p, **pages;
> - int i, npages;
> -
> - /* This is the shared memory object that backs the GEM resource */
> - inode = file_inode(obj->filp);
> - mapping = inode->i_mapping;
> -
> - npages = obj->size >> PAGE_SHIFT;
> -
> - pages = drm_malloc_ab(npages, sizeof(struct page *));
> - if (pages == NULL)
> - return ERR_PTR(-ENOMEM);
> -
> - gfpmask |= mapping_gfp_mask(mapping);
> -
> - for (i = 0; i < npages; i++) {
> - p = shmem_read_mapping_page_gfp(mapping, i, gfpmask);
> - if (IS_ERR(p))
> - goto fail;
> - pages[i] = p;
> -
> - /* There is a hypothetical issue w/ drivers that require
> - * buffer memory in the low 4GB.. if the pages are un-
> - * pinned, and swapped out, they can end up swapped back
> - * in above 4GB. If pages are already in memory, then
> - * shmem_read_mapping_page_gfp will ignore the gfpmask,
> - * even if the already in-memory page disobeys the mask.
> - *
> - * It is only a theoretical issue today, because none of
> - * the devices with this limitation can be populated with
> - * enough memory to trigger the issue. But this BUG_ON()
> - * is here as a reminder in case the problem with
> - * shmem_read_mapping_page_gfp() isn't solved by the time
> - * it does become a real issue.
> - *
> - * See this thread: http://lkml.org/lkml/2011/7/11/238
> - */
> - BUG_ON((gfpmask & __GFP_DMA32) &&
> - (page_to_pfn(p) >= 0x00100000UL));
> - }
> -
> - return pages;
> -
> -fail:
> - while (i--)
> - page_cache_release(pages[i]);
> -
> - drm_free_large(pages);
> - return ERR_CAST(p);
> -}
> -
> -/**
> - * drm_gem_put_pages - helper to free backing pages for a GEM object
> - * @obj: obj in question
> - * @pages: pages to free
> - */
> -void _drm_gem_put_pages(struct drm_gem_object *obj, struct page **pages,
> - bool dirty, bool accessed)
> -{
> - int i, npages;
> -
> - npages = obj->size >> PAGE_SHIFT;
> -
> - for (i = 0; i < npages; i++) {
> - if (dirty)
> - set_page_dirty(pages[i]);
> -
> - if (accessed)
> - mark_page_accessed(pages[i]);
> -
> - /* Undo the reference we took when populating the table */
> - page_cache_release(pages[i]);
> - }
> -
> - drm_free_large(pages);
> -}
> -
> -int
> -_drm_gem_create_mmap_offset_size(struct drm_gem_object *obj, size_t size)
> -{
> - struct drm_device *dev = obj->dev;
> - struct drm_gem_mm *mm = dev->mm_private;
> -
> - return drm_vma_offset_add(&mm->vma_manager, &obj->vma_node,
> - size / PAGE_SIZE);
> -}
> --
> 1.8.3.1
>
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--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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