83 lines
3.1 KiB
C
83 lines
3.1 KiB
C
/*******************************************************************************
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Copyright (c) 2015-2019 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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#ifndef __UVM_PROCFS_H__
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#define __UVM_PROCFS_H__
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#include "uvm_extern_decl.h"
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#include "uvm_forward_decl.h"
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#include "uvm_linux.h"
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#include "nv-procfs.h"
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#include "conftest.h"
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NV_STATUS uvm_procfs_init(void);
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void uvm_procfs_exit(void);
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// Is procfs enabled at all?
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static bool uvm_procfs_is_enabled(void)
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{
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#if defined(CONFIG_PROC_FS)
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return true;
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#else
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return false;
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#endif
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}
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// Is debug procfs enabled? This indicates that debug procfs files should be
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// created.
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static bool uvm_procfs_is_debug_enabled(void)
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{
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return uvm_enable_debug_procfs != 0;
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}
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struct proc_dir_entry *uvm_procfs_get_gpu_base_dir(void);
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struct proc_dir_entry *uvm_procfs_get_cpu_base_dir(void);
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int uvm_procfs_open_callback(void);
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void uvm_procfs_close_callback(void);
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// Helper for printing into a seq_file if it's not NULL and UVM_DBG_PRINT
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// otherwise. Useful when sharing a print function for both debug output and
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// procfs output.
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#define UVM_SEQ_OR_DBG_PRINT(seq_file, format, ...) \
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do { \
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if (seq_file != NULL) \
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seq_printf(seq_file, format, ##__VA_ARGS__); \
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else \
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UVM_DBG_PRINT(format, ##__VA_ARGS__); \
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} while (0)
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#if defined(CONFIG_PROC_FS)
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// Defer PM lock acquisition until the respective read() callback
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// is invoked, to ensure the lock is acquired and released by
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// the same thread. Else the lock tracking validation code must
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// be disabled for this lock, which is undesirable. As a result,
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// lockless macro is used below. See bug 2594854 for additional
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// information.
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#define UVM_DEFINE_SINGLE_PROCFS_FILE(name) \
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NV_DEFINE_SINGLE_PROCFS_FILE_READ_ONLY_WITHOUT_LOCK(name)
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#endif
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#endif // __UVM_PROCFS_H__
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