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62 lines
2.7 KiB
C
62 lines
2.7 KiB
C
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/*******************************************************************************
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Copyright (c) 2016-2019 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 hint 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_PERF_PREFETCH_H__
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#define __UVM_PERF_PREFETCH_H__
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#include "uvm_linux.h"
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#include "uvm_processors.h"
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#include "uvm_va_block_types.h"
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typedef struct
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{
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const uvm_page_mask_t *prefetch_pages_mask;
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uvm_processor_id_t residency;
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} uvm_perf_prefetch_hint_t;
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// Global initialization/cleanup functions
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NV_STATUS uvm_perf_prefetch_init(void);
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void uvm_perf_prefetch_exit(void);
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// VA space Initialization/cleanup functions
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NV_STATUS uvm_perf_prefetch_load(uvm_va_space_t *va_space);
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void uvm_perf_prefetch_unload(uvm_va_space_t *va_space);
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// Obtain a hint with the pages that may be prefetched in the block
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uvm_perf_prefetch_hint_t uvm_perf_prefetch_get_hint(uvm_va_block_t *va_block,
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const uvm_page_mask_t *new_residency_mask);
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// Notify that the given mask of pages within region is going to migrate to
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// the given residency. The caller must hold the va_space lock.
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void uvm_perf_prefetch_prenotify_fault_migrations(uvm_va_block_t *va_block,
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uvm_va_block_context_t *va_block_context,
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uvm_processor_id_t new_residency,
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const uvm_page_mask_t *migrate_pages,
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uvm_va_block_region_t region);
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#define UVM_PERF_PREFETCH_HINT_NONE() \
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(uvm_perf_prefetch_hint_t){ NULL, UVM_ID_INVALID }
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#endif
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