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e0b09ac55d
The objects which use cache handling should reference their own handler object not the internal data structure it uses to track the nodes. Have the "users" of the mmu notifier code pass opaque objects which can then be properly used in the mmu callbacks depending on the owners needs. This patch has the additional benefit that operations no longer require a look up in a list to find the handlers. Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Dean Luick <dean.luick@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
80 lines
3.1 KiB
C
80 lines
3.1 KiB
C
/*
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* Copyright(c) 2016 Intel Corporation.
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* BSD LICENSE
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* - Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef _HFI1_MMU_RB_H
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#define _HFI1_MMU_RB_H
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#include "hfi.h"
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struct mmu_rb_node {
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unsigned long addr;
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unsigned long len;
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unsigned long __last;
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struct rb_node node;
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};
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struct mmu_rb_ops {
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bool (*filter)(struct mmu_rb_node *node, unsigned long addr,
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unsigned long len);
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int (*insert)(void *ops_arg, struct mmu_rb_node *mnode);
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void (*remove)(void *ops_arg, struct mmu_rb_node *mnode,
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struct mm_struct *mm);
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int (*invalidate)(void *ops_arg, struct mmu_rb_node *node);
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};
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int hfi1_mmu_rb_register(void *ops_arg, struct mm_struct *mm,
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struct mmu_rb_ops *ops,
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struct mmu_rb_handler **handler);
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void hfi1_mmu_rb_unregister(struct mmu_rb_handler *handler);
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int hfi1_mmu_rb_insert(struct mmu_rb_handler *handler,
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struct mmu_rb_node *mnode);
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void hfi1_mmu_rb_remove(struct mmu_rb_handler *handler,
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struct mmu_rb_node *mnode);
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struct mmu_rb_node *hfi1_mmu_rb_extract(struct mmu_rb_handler *handler,
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unsigned long addr, unsigned long len);
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#endif /* _HFI1_MMU_RB_H */
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