a546a27684
This patch implements partial migration/mapping for gpu/cpu page faults in SVM according to migration granularity(default 2MB). A svm range may include pages from both system ram and vram of one gpu now. These chagnes are expected to improve migration performance and reduce mmu callback and TLB flush workloads. Signed-off-by: Xiaogang Chen <xiaogang.chen@amd.com> Reviewed-by: Philip Yang <Philip.Yang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
57 lines
2.0 KiB
C
57 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR MIT */
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/*
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* Copyright 2020-2021 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#ifndef KFD_MIGRATE_H_
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#define KFD_MIGRATE_H_
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#if IS_ENABLED(CONFIG_HSA_AMD_SVM)
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#include <linux/rwsem.h>
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#include <linux/list.h>
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#include <linux/mutex.h>
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#include <linux/sched/mm.h>
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#include <linux/hmm.h>
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#include "kfd_priv.h"
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#include "kfd_svm.h"
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enum MIGRATION_COPY_DIR {
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FROM_RAM_TO_VRAM = 0,
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FROM_VRAM_TO_RAM
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};
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int svm_migrate_to_vram(struct svm_range *prange, uint32_t best_loc,
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unsigned long start, unsigned long last,
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struct mm_struct *mm, uint32_t trigger);
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int svm_migrate_vram_to_ram(struct svm_range *prange, struct mm_struct *mm,
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unsigned long start, unsigned long last,
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uint32_t trigger, struct page *fault_page);
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unsigned long
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svm_migrate_addr_to_pfn(struct amdgpu_device *adev, unsigned long addr);
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#endif /* IS_ENABLED(CONFIG_HSA_AMD_SVM) */
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#endif /* KFD_MIGRATE_H_ */
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