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https://github.com/NVIDIA/open-gpu-kernel-modules.git
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108 lines
3.5 KiB
C
108 lines
3.5 KiB
C
/*******************************************************************************
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Copyright (c) 2015-2018 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_global.h"
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#include "uvm_procfs.h"
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#include "uvm_gpu.h"
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#include "nv-procfs.h"
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#include "uvm_linux.h"
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#define UVM_PROC_DIR_NAME "driver/nvidia-uvm"
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#define UVM_PROC_GPUS_DIR_NAME "gpus"
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#define UVM_PROC_CPU_DIR_NAME "cpu"
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#if defined(CONFIG_PROC_FS)
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// This parameter enables additional debug procfs entries. It's enabled by
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// default for debug and develop builds and disabled for release builds.
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int uvm_enable_debug_procfs = UVM_IS_DEBUG() || UVM_IS_DEVELOP();
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module_param(uvm_enable_debug_procfs, int, S_IRUGO);
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MODULE_PARM_DESC(uvm_enable_debug_procfs, "Enable debug procfs entries in /proc/" UVM_PROC_DIR_NAME);
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#else
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int uvm_enable_debug_procfs = 0;
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#endif
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static struct proc_dir_entry *uvm_proc_dir;
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static struct proc_dir_entry *uvm_proc_gpus;
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static struct proc_dir_entry *uvm_proc_cpu;
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NV_STATUS uvm_procfs_init()
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{
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if (!uvm_procfs_is_enabled())
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return NV_OK;
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uvm_proc_dir = NV_CREATE_PROC_DIR(UVM_PROC_DIR_NAME, NULL);
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if (uvm_proc_dir == NULL)
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return NV_ERR_OPERATING_SYSTEM;
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uvm_proc_gpus = NV_CREATE_PROC_DIR(UVM_PROC_GPUS_DIR_NAME, uvm_proc_dir);
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if (uvm_proc_gpus == NULL)
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return NV_ERR_OPERATING_SYSTEM;
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uvm_proc_cpu = NV_CREATE_PROC_DIR(UVM_PROC_CPU_DIR_NAME, uvm_proc_dir);
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if (uvm_proc_cpu == NULL)
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return NV_ERR_OPERATING_SYSTEM;
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return NV_OK;
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}
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void uvm_procfs_exit()
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{
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uvm_procfs_destroy_entry(uvm_proc_dir);
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}
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// TODO: Bug 1767237: Copied from nv-procfs.c. Refactor it out to
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// nv-procfs-common.c.
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static void procfs_destroy_entry_with_root(struct proc_dir_entry *entry, struct proc_dir_entry *delimiter)
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{
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#if defined(NV_PROC_REMOVE_PRESENT)
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proc_remove(entry);
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#else
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while (entry) {
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struct proc_dir_entry *next = entry->next;
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if (entry->subdir)
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procfs_destroy_entry_with_root(entry->subdir, delimiter);
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remove_proc_entry(entry->name, entry->parent);
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if (entry == delimiter)
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break;
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entry = next;
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}
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#endif
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}
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void uvm_procfs_destroy_entry(struct proc_dir_entry *entry)
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{
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procfs_destroy_entry_with_root(entry, entry);
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}
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struct proc_dir_entry *uvm_procfs_get_gpu_base_dir()
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{
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return uvm_proc_gpus;
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}
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struct proc_dir_entry *uvm_procfs_get_cpu_base_dir()
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{
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return uvm_proc_cpu;
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}
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