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https://github.com/NVIDIA/open-gpu-kernel-modules.git
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82 lines
2.8 KiB
C
82 lines
2.8 KiB
C
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/*******************************************************************************
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Copyright (c) 2013 NVIDIA Corporation
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to
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deal in the Software without restriction, including without limitation the
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rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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sell copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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*******************************************************************************/
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#include "uvm_linux.h"
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#if UVM_CGROUP_ACCOUNTING_SUPPORTED()
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#include <linux/memcontrol.h>
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#include <linux/sched/mm.h>
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#endif
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//
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// uvm_linux.c
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//
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// This file, along with conftest.h and umv_linux.h, helps to insulate
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// the (out-of-tree) UVM driver from changes to the upstream Linux kernel.
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//
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#if !defined(NV_ADDRESS_SPACE_INIT_ONCE_PRESENT)
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void address_space_init_once(struct address_space *mapping)
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{
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memset(mapping, 0, sizeof(*mapping));
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INIT_RADIX_TREE(&mapping->page_tree, GFP_ATOMIC);
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#if defined(NV_ADDRESS_SPACE_HAS_RWLOCK_TREE_LOCK)
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//
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// The .tree_lock member variable was changed from type rwlock_t, to
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// spinlock_t, on 25 July 2008, by mainline commit
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// 19fd6231279be3c3bdd02ed99f9b0eb195978064.
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//
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rwlock_init(&mapping->tree_lock);
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#else
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spin_lock_init(&mapping->tree_lock);
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#endif
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spin_lock_init(&mapping->i_mmap_lock);
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INIT_LIST_HEAD(&mapping->private_list);
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spin_lock_init(&mapping->private_lock);
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INIT_RAW_PRIO_TREE_ROOT(&mapping->i_mmap);
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INIT_LIST_HEAD(&mapping->i_mmap_nonlinear);
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}
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#endif
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#if UVM_CGROUP_ACCOUNTING_SUPPORTED()
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void uvm_memcg_context_start(uvm_memcg_context_t *context, struct mm_struct *mm)
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{
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memset(context, 0, sizeof(*context));
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if (!mm)
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return;
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context->new_memcg = get_mem_cgroup_from_mm(mm);
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context->old_memcg = set_active_memcg(context->new_memcg);
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}
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void uvm_memcg_context_end(uvm_memcg_context_t *context)
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{
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if (!context->new_memcg)
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return;
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set_active_memcg(context->old_memcg);
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mem_cgroup_put(context->new_memcg);
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}
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#endif
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