diff options
author | Hans de Goede <hdegoede@redhat.com> | 2022-06-15 23:50:29 +0300 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@kernel.org> | 2022-07-08 18:38:07 +0300 |
commit | 3a68900a0ceae03cc48a2728eaa66f50c02189cc (patch) | |
tree | 30af712e6c2501dd9b1cf6efec163c75ed1aa497 | |
parent | f9599127dd5205aaedc90895cd012d2f102e8fb3 (diff) | |
download | linux-3a68900a0ceae03cc48a2728eaa66f50c02189cc.tar.xz |
media: atomisp: remove hmm_page_object
hmm_page_object only stores a struct page pointer, so we can just use
the hmm_bo.pages page pointer array everywhere.
Link: https://lore.kernel.org/linux-media/20220615205037.16549-33-hdegoede@redhat.com
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
-rw-r--r-- | drivers/staging/media/atomisp/include/hmm/hmm_bo.h | 5 | ||||
-rw-r--r-- | drivers/staging/media/atomisp/pci/hmm/hmm.c | 16 | ||||
-rw-r--r-- | drivers/staging/media/atomisp/pci/hmm/hmm_bo.c | 79 |
3 files changed, 26 insertions, 74 deletions
diff --git a/drivers/staging/media/atomisp/include/hmm/hmm_bo.h b/drivers/staging/media/atomisp/include/hmm/hmm_bo.h index a4b193c35127..385e22fc4a46 100644 --- a/drivers/staging/media/atomisp/include/hmm/hmm_bo.h +++ b/drivers/staging/media/atomisp/include/hmm/hmm_bo.h @@ -114,10 +114,6 @@ struct hmm_bo_device { struct kmem_cache *bo_cache; }; -struct hmm_page_object { - struct page *page; -}; - struct hmm_buffer_object { struct hmm_bo_device *bdev; struct list_head list; @@ -128,7 +124,6 @@ struct hmm_buffer_object { /* mutex protecting this BO */ struct mutex mutex; enum hmm_bo_type type; - struct hmm_page_object *page_obj; /* physical pages */ int mmap_count; int status; int mem_type; diff --git a/drivers/staging/media/atomisp/pci/hmm/hmm.c b/drivers/staging/media/atomisp/pci/hmm/hmm.c index 84a52514df16..7f0fac779fd5 100644 --- a/drivers/staging/media/atomisp/pci/hmm/hmm.c +++ b/drivers/staging/media/atomisp/pci/hmm/hmm.c @@ -295,7 +295,7 @@ static int load_and_flush_by_kmap(ia_css_ptr virt, void *data, idx = (virt - bo->start) >> PAGE_SHIFT; offset = (virt - bo->start) - (idx << PAGE_SHIFT); - src = (char *)kmap(bo->page_obj[idx].page) + offset; + src = (char *)kmap(bo->pages[idx]) + offset; if ((bytes + offset) >= PAGE_SIZE) { len = PAGE_SIZE - offset; @@ -314,7 +314,7 @@ static int load_and_flush_by_kmap(ia_css_ptr virt, void *data, clflush_cache_range(src, len); - kunmap(bo->page_obj[idx].page); + kunmap(bo->pages[idx]); } return 0; @@ -428,9 +428,9 @@ int hmm_store(ia_css_ptr virt, const void *data, unsigned int bytes) offset = (virt - bo->start) - (idx << PAGE_SHIFT); if (in_atomic()) - des = (char *)kmap_atomic(bo->page_obj[idx].page); + des = (char *)kmap_atomic(bo->pages[idx]); else - des = (char *)kmap(bo->page_obj[idx].page); + des = (char *)kmap(bo->pages[idx]); if (!des) { dev_err(atomisp_dev, @@ -464,7 +464,7 @@ int hmm_store(ia_css_ptr virt, const void *data, unsigned int bytes) */ kunmap_atomic(des - offset); else - kunmap(bo->page_obj[idx].page); + kunmap(bo->pages[idx]); } return 0; @@ -508,7 +508,7 @@ int hmm_set(ia_css_ptr virt, int c, unsigned int bytes) idx = (virt - bo->start) >> PAGE_SHIFT; offset = (virt - bo->start) - (idx << PAGE_SHIFT); - des = (char *)kmap(bo->page_obj[idx].page) + offset; + des = (char *)kmap(bo->pages[idx]) + offset; if ((bytes + offset) >= PAGE_SIZE) { len = PAGE_SIZE - offset; @@ -524,7 +524,7 @@ int hmm_set(ia_css_ptr virt, int c, unsigned int bytes) clflush_cache_range(des, len); - kunmap(bo->page_obj[idx].page); + kunmap(bo->pages[idx]); } return 0; @@ -547,7 +547,7 @@ phys_addr_t hmm_virt_to_phys(ia_css_ptr virt) idx = (virt - bo->start) >> PAGE_SHIFT; offset = (virt - bo->start) - (idx << PAGE_SHIFT); - return page_to_phys(bo->page_obj[idx].page) + offset; + return page_to_phys(bo->pages[idx]) + offset; } int hmm_mmap(struct vm_area_struct *vma, ia_css_ptr virt) diff --git a/drivers/staging/media/atomisp/pci/hmm/hmm_bo.c b/drivers/staging/media/atomisp/pci/hmm/hmm_bo.c index e5796ab7dbcf..f50494123f03 100644 --- a/drivers/staging/media/atomisp/pci/hmm/hmm_bo.c +++ b/drivers/staging/media/atomisp/pci/hmm/hmm_bo.c @@ -631,7 +631,7 @@ static void free_private_bo_pages(struct hmm_buffer_object *bo, int i, ret; for (i = 0; i < free_pgnr; i++) { - ret = set_pages_wb(bo->page_obj[i].page, 1); + ret = set_pages_wb(bo->pages[i], 1); if (ret) dev_err(atomisp_dev, "set page to WB err ...ret = %d\n", @@ -644,7 +644,7 @@ static void free_private_bo_pages(struct hmm_buffer_object *bo, address be valid,it maybe memory corruption by lowmemory */ if (!ret) { - __free_pages(bo->page_obj[i].page, 0); + __free_pages(bo->pages[i], 0); } } } @@ -663,11 +663,6 @@ static int alloc_private_pages(struct hmm_buffer_object *bo) pgnr = bo->pgnr; - bo->page_obj = kmalloc_array(pgnr, sizeof(struct hmm_page_object), - GFP_KERNEL); - if (unlikely(!bo->page_obj)) - return -ENOMEM; - i = 0; alloc_pgnr = 0; @@ -739,7 +734,7 @@ retry: } for (j = 0; j < blk_pgnr; j++, i++) { - bo->page_obj[i].page = pages + j; + bo->pages[i] = pages + j; } pgnr -= blk_pgnr; @@ -759,18 +754,9 @@ retry: cleanup: alloc_pgnr = i; free_private_bo_pages(bo, alloc_pgnr); - - kfree(bo->page_obj); - return -ENOMEM; } -static void free_private_pages(struct hmm_buffer_object *bo) -{ - free_private_bo_pages(bo, bo->pgnr); - kfree(bo->page_obj); -} - static void free_user_pages(struct hmm_buffer_object *bo, unsigned int page_nr) { @@ -782,8 +768,6 @@ static void free_user_pages(struct hmm_buffer_object *bo, for (i = 0; i < page_nr; i++) put_page(bo->pages[i]); } - kfree(bo->pages); - kfree(bo->page_obj); } /* @@ -793,20 +777,7 @@ static int alloc_user_pages(struct hmm_buffer_object *bo, const void __user *userptr) { int page_nr; - int i; struct vm_area_struct *vma; - struct page **pages; - - pages = kmalloc_array(bo->pgnr, sizeof(struct page *), GFP_KERNEL); - if (unlikely(!pages)) - return -ENOMEM; - - bo->page_obj = kmalloc_array(bo->pgnr, sizeof(struct hmm_page_object), - GFP_KERNEL); - if (unlikely(!bo->page_obj)) { - kfree(pages); - return -ENOMEM; - } mutex_unlock(&bo->mutex); mmap_read_lock(current->mm); @@ -814,8 +785,6 @@ static int alloc_user_pages(struct hmm_buffer_object *bo, mmap_read_unlock(current->mm); if (!vma) { dev_err(atomisp_dev, "find_vma failed\n"); - kfree(bo->page_obj); - kfree(pages); mutex_lock(&bo->mutex); return -EFAULT; } @@ -827,18 +796,16 @@ static int alloc_user_pages(struct hmm_buffer_object *bo, userptr = untagged_addr(userptr); - bo->pages = pages; - if (vma->vm_flags & (VM_IO | VM_PFNMAP)) { page_nr = pin_user_pages((unsigned long)userptr, bo->pgnr, FOLL_LONGTERM | FOLL_WRITE, - pages, NULL); + bo->pages, NULL); bo->mem_type = HMM_BO_MEM_TYPE_PFN; } else { /*Handle frame buffer allocated in user space*/ mutex_unlock(&bo->mutex); page_nr = get_user_pages_fast((unsigned long)userptr, - (int)(bo->pgnr), 1, pages); + (int)(bo->pgnr), 1, bo->pages); mutex_lock(&bo->mutex); bo->mem_type = HMM_BO_MEM_TYPE_USER; } @@ -858,10 +825,6 @@ static int alloc_user_pages(struct hmm_buffer_object *bo, goto out_of_mem; } - for (i = 0; i < bo->pgnr; i++) { - bo->page_obj[i].page = pages[i]; - } - return 0; out_of_mem: @@ -891,6 +854,12 @@ int hmm_bo_alloc_pages(struct hmm_buffer_object *bo, mutex_lock(&bo->mutex); check_bo_status_no_goto(bo, HMM_BO_PAGE_ALLOCED, status_err); + bo->pages = kmalloc_array(bo->pgnr, sizeof(struct page *), GFP_KERNEL); + if (unlikely(!bo->pages)) { + ret = -ENOMEM; + goto alloc_err; + } + /* * TO DO: * add HMM_BO_USER type @@ -915,6 +884,7 @@ int hmm_bo_alloc_pages(struct hmm_buffer_object *bo, return 0; alloc_err: + kfree(bo->pages); mutex_unlock(&bo->mutex); dev_err(atomisp_dev, "alloc pages err...\n"); return ret; @@ -940,11 +910,13 @@ void hmm_bo_free_pages(struct hmm_buffer_object *bo) bo->status &= (~HMM_BO_PAGE_ALLOCED); if (bo->type == HMM_BO_PRIVATE) - free_private_pages(bo); + free_private_bo_pages(bo, bo->pgnr); else if (bo->type == HMM_BO_USER) free_user_pages(bo, bo->pgnr); else dev_err(atomisp_dev, "invalid buffer type.\n"); + + kfree(bo->pages); mutex_unlock(&bo->mutex); return; @@ -989,7 +961,7 @@ int hmm_bo_bind(struct hmm_buffer_object *bo) for (i = 0; i < bo->pgnr; i++) { ret = isp_mmu_map(&bdev->mmu, virt, - page_to_phys(bo->page_obj[i].page), 1); + page_to_phys(bo->pages[i]), 1); if (ret) goto map_err; virt += (1 << PAGE_SHIFT); @@ -1103,9 +1075,6 @@ int hmm_bo_binded(struct hmm_buffer_object *bo) void *hmm_bo_vmap(struct hmm_buffer_object *bo, bool cached) { - struct page **pages; - int i; - check_bo_null_return(bo, NULL); mutex_lock(&bo->mutex); @@ -1122,27 +1091,15 @@ void *hmm_bo_vmap(struct hmm_buffer_object *bo, bool cached) bo->status &= ~(HMM_BO_VMAPED | HMM_BO_VMAPED_CACHED); } - pages = kmalloc_array(bo->pgnr, sizeof(*pages), GFP_KERNEL); - if (unlikely(!pages)) { - mutex_unlock(&bo->mutex); - return NULL; - } - - for (i = 0; i < bo->pgnr; i++) - pages[i] = bo->page_obj[i].page; - - bo->vmap_addr = vmap(pages, bo->pgnr, VM_MAP, + bo->vmap_addr = vmap(bo->pages, bo->pgnr, VM_MAP, cached ? PAGE_KERNEL : PAGE_KERNEL_NOCACHE); if (unlikely(!bo->vmap_addr)) { - kfree(pages); mutex_unlock(&bo->mutex); dev_err(atomisp_dev, "vmap failed...\n"); return NULL; } bo->status |= (cached ? HMM_BO_VMAPED_CACHED : HMM_BO_VMAPED); - kfree(pages); - mutex_unlock(&bo->mutex); return bo->vmap_addr; } @@ -1272,7 +1229,7 @@ int hmm_bo_mmap(struct vm_area_struct *vma, struct hmm_buffer_object *bo) virt = vma->vm_start; for (i = 0; i < pgnr; i++) { - pfn = page_to_pfn(bo->page_obj[i].page); + pfn = page_to_pfn(bo->pages[i]); if (remap_pfn_range(vma, virt, pfn, PAGE_SIZE, PAGE_SHARED)) { dev_warn(atomisp_dev, "remap_pfn_range failed: virt = 0x%x, pfn = 0x%x, mapped_pgnr = %d\n", |