From f347fde22f1297e4f022600d201780d5ead78114 Mon Sep 17 00:00:00 2001 From: Joshua Bakita Date: Wed, 25 Sep 2024 16:09:09 -0400 Subject: Delete no-longer-needed nvgpu headers The dependency on these was removed in commit 8340d234. --- include/nvgpu/page_allocator.h | 185 ----------------------------------------- 1 file changed, 185 deletions(-) delete mode 100644 include/nvgpu/page_allocator.h (limited to 'include/nvgpu/page_allocator.h') diff --git a/include/nvgpu/page_allocator.h b/include/nvgpu/page_allocator.h deleted file mode 100644 index a6e0205..0000000 --- a/include/nvgpu/page_allocator.h +++ /dev/null @@ -1,185 +0,0 @@ -/* - * Copyright (c) 2016-2017, NVIDIA CORPORATION. All rights reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - */ - -#ifndef PAGE_ALLOCATOR_PRIV_H -#define PAGE_ALLOCATOR_PRIV_H - -#include -#include -#include -#include -#include - -struct nvgpu_allocator; - -/* - * This allocator implements the ability to do SLAB style allocation since the - * GPU has two page sizes available - 4k and 64k/128k. When the default - * granularity is the large page size (64k/128k) small allocations become very - * space inefficient. This is most notable in PDE and PTE blocks which are 4k - * in size. - * - * Thus we need the ability to suballocate in 64k pages. The way we do this for - * the GPU is as follows. We have several buckets for sub-64K allocations: - * - * B0 - 4k - * B1 - 8k - * B3 - 16k - * B4 - 32k - * B5 - 64k (for when large pages are 128k) - * - * When an allocation comes in for less than the large page size (from now on - * assumed to be 64k) the allocation is satisfied by one of the buckets. - */ -struct page_alloc_slab { - struct nvgpu_list_node empty; - struct nvgpu_list_node partial; - struct nvgpu_list_node full; - - int nr_empty; - int nr_partial; - int nr_full; - - u32 slab_size; -}; - -enum slab_page_state { - SP_EMPTY, - SP_PARTIAL, - SP_FULL, - SP_NONE -}; - -struct page_alloc_slab_page { - unsigned long bitmap; - u64 page_addr; - u32 slab_size; - - u32 nr_objects; - u32 nr_objects_alloced; - - enum slab_page_state state; - - struct page_alloc_slab *owner; - struct nvgpu_list_node list_entry; -}; - -static inline struct page_alloc_slab_page * -page_alloc_slab_page_from_list_entry(struct nvgpu_list_node *node) -{ - return (struct page_alloc_slab_page *) - ((uintptr_t)node - offsetof(struct page_alloc_slab_page, list_entry)); -}; - -/* - * Struct to handle internal management of page allocation. It holds a list - * of the chunks of pages that make up the overall allocation - much like a - * scatter gather table. - */ -struct nvgpu_page_alloc { - /* - * nvgpu_sgt for describing the actual allocation. Convenient for - * GMMU mapping. - */ - struct nvgpu_sgt sgt; - - int nr_chunks; - u64 length; - - /* - * Only useful for the RB tree - since the alloc may have discontiguous - * pages the base is essentially irrelevant except for the fact that it - * is guarenteed to be unique. - */ - u64 base; - - struct nvgpu_rbtree_node tree_entry; - - /* - * Set if this is a slab alloc. Points back to the slab page that owns - * this particular allocation. nr_chunks will always be 1 if this is - * set. - */ - struct page_alloc_slab_page *slab_page; -}; - -static inline struct nvgpu_page_alloc * -nvgpu_page_alloc_from_rbtree_node(struct nvgpu_rbtree_node *node) -{ - return (struct nvgpu_page_alloc *) - ((uintptr_t)node - offsetof(struct nvgpu_page_alloc, tree_entry)); -}; - -struct nvgpu_page_allocator { - struct nvgpu_allocator *owner; /* Owner of this allocator. */ - - /* - * Use a buddy allocator to manage the allocation of the underlying - * pages. This lets us abstract the discontiguous allocation handling - * out of the annoyingly complicated buddy allocator. - */ - struct nvgpu_allocator source_allocator; - - /* - * Page params. - */ - u64 base; - u64 length; - u64 page_size; - u32 page_shift; - - struct nvgpu_rbtree_node *allocs; /* Outstanding allocations. */ - - struct page_alloc_slab *slabs; - int nr_slabs; - - struct nvgpu_kmem_cache *alloc_cache; - struct nvgpu_kmem_cache *slab_page_cache; - - u64 flags; - - /* - * Stat tracking. - */ - u64 nr_allocs; - u64 nr_frees; - u64 nr_fixed_allocs; - u64 nr_fixed_frees; - u64 nr_slab_allocs; - u64 nr_slab_frees; - u64 pages_alloced; - u64 pages_freed; -}; - -static inline struct nvgpu_page_allocator *page_allocator( - struct nvgpu_allocator *a) -{ - return (struct nvgpu_page_allocator *)(a)->priv; -} - -static inline struct nvgpu_allocator *palloc_owner( - struct nvgpu_page_allocator *a) -{ - return a->owner; -} - -#endif -- cgit v1.2.2