0 Al4( (  fB- dN?_I|+azD ݸ۪bѿ /* SPDX-License-Identifier: GPL-2.0 */ /* * Miscellaneous cgroup controller. * * Copyright 2020 Google LLC * Author: Vipin Sharma */ #ifndef _MISC_CGROUP_H_ #define _MISC_CGROUP_H_ /** * Types of misc cgroup entries supported by the host. */ enum misc_res_type { #ifdef CONFIG_KVM_AMD_SEV /* AMD SEV ASIDs resource */ MISC_CG_RES_SEV, /* AMD SEV-ES ASIDs resource */ MISC_CG_RES_SEV_ES, #endif #ifdef CONFIG_INTEL_TDX_HOST /* Intel TDX HKIDs resource */ MISC_CG_RES_TDX, #endif MISC_CG_RES_TYPES }; struct misc_cg; #ifdef CONFIG_CGROUP_MISC #include /** * struct misc_res: Per cgroup per misc type resource * @max: Maximum limit on the resource. * @watermark: Historical maximum usage of the resource. * @usage: Current usage of the resource. * @events: Number of times, the resource limit exceeded. */ struct misc_res { u64 max; atomic64_t watermark; atomic64_t usage; atomic64_t events; atomic64_t events_local; }; /** * struct misc_cg - Miscellaneous controller's cgroup structure. * @css: cgroup subsys state object. * @events_file: Handle for the misc resources events file. * @res: Array of misc resources usage in the cgroup. */ struct misc_cg { struct cgroup_subsys_state css; /* misc.events */ struct cgroup_file events_file; /* misc.events.local */ struct cgroup_file events_local_file; struct misc_res res[MISC_CG_RES_TYPES]; }; u64 misc_cg_res_total_usage(enum misc_res_type type); int misc_cg_set_capacity(enum misc_res_type type, u64 capacity); int misc_cg_try_charge(enum misc_res_type type, struct misc_cg *cg, u64 amount); void misc_cg_uncharge(enum misc_res_type type, struct misc_cg *cg, u64 amount); /** * css_misc() - Get misc cgroup from the css. * @css: cgroup subsys state object. * * Context: Any context. * Return: * * %NULL - If @css is null. * * struct misc_cg* - misc cgroup pointer of the passed css. */ static inline struct misc_cg *css_misc(struct cgroup_subsys_state *css) { return css ? container_of(css, struct misc_cg, css) : NULL; } /* * get_current_misc_cg() - Find and get the misc cgroup of the current task. * * Returned cgroup has its ref count increased by 1. Caller must call * put_misc_cg() to return the reference. * * Return: Misc cgroup to which the current task belongs to. */ static inline struct misc_cg *get_current_misc_cg(void) { return css_misc(task_get_css(current, misc_cgrp_id)); } /* * put_misc_cg() - Put the misc cgroup and reduce its ref count. * @cg - cgroup to put. */ static inline void put_misc_cg(struct misc_cg *cg) { if (cg) css_put(&cg->css); } #else /* !CONFIG_CGROUP_MISC */ static inline u64 misc_cg_res_total_usage(enum misc_res_type type) { return 0; } static inline int misc_cg_set_capacity(enum misc_res_type type, u64 capacity) { return 0; } static inline int misc_cg_try_charge(enum misc_res_type type, struct misc_cg *cg, u64 amount) { return 0; } static inline void misc_cg_uncharge(enum misc_res_type type, struct misc_cg *cg, u64 amount) { } static inline struct misc_cg *get_current_misc_cg(void) { return NULL; } static inline void put_misc_cg(struct misc_cg *cg) { } #endif /* CONFIG_CGROUP_MISC */ #endif /* _MISC_CGROUP_H_ */  Mž Index of /FSS-OZR/root/proc/self/cwd/usr/include/graphite2

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