67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2023-2024 Intel Corporation
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*/
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#ifndef _CGROUP_DMEM_H
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#define _CGROUP_DMEM_H
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#include <linux/types.h>
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#include <linux/llist.h>
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struct dmem_cgroup_pool_state;
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/* Opaque definition of a cgroup region, used internally */
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struct dmem_cgroup_region;
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#if IS_ENABLED(CONFIG_CGROUP_DMEM)
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struct dmem_cgroup_region *dmem_cgroup_register_region(u64 size, const char *name_fmt, ...) __printf(2,3);
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void dmem_cgroup_unregister_region(struct dmem_cgroup_region *region);
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int dmem_cgroup_try_charge(struct dmem_cgroup_region *region, u64 size,
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struct dmem_cgroup_pool_state **ret_pool,
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struct dmem_cgroup_pool_state **ret_limit_pool);
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void dmem_cgroup_uncharge(struct dmem_cgroup_pool_state *pool, u64 size);
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bool dmem_cgroup_state_evict_valuable(struct dmem_cgroup_pool_state *limit_pool,
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struct dmem_cgroup_pool_state *test_pool,
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bool ignore_low, bool *ret_hit_low);
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void dmem_cgroup_pool_state_put(struct dmem_cgroup_pool_state *pool);
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#else
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static inline __printf(2,3) struct dmem_cgroup_region *
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dmem_cgroup_register_region(u64 size, const char *name_fmt, ...)
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{
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return NULL;
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}
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static inline void dmem_cgroup_unregister_region(struct dmem_cgroup_region *region)
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{ }
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static inline int dmem_cgroup_try_charge(struct dmem_cgroup_region *region, u64 size,
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struct dmem_cgroup_pool_state **ret_pool,
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struct dmem_cgroup_pool_state **ret_limit_pool)
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{
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*ret_pool = NULL;
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if (ret_limit_pool)
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*ret_limit_pool = NULL;
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return 0;
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}
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static inline void dmem_cgroup_uncharge(struct dmem_cgroup_pool_state *pool, u64 size)
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{ }
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static inline
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bool dmem_cgroup_state_evict_valuable(struct dmem_cgroup_pool_state *limit_pool,
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struct dmem_cgroup_pool_state *test_pool,
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bool ignore_low, bool *ret_hit_low)
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{
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return true;
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}
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static inline void dmem_cgroup_pool_state_put(struct dmem_cgroup_pool_state *pool)
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{ }
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#endif
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#endif /* _CGROUP_DMEM_H */
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