/*
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* Copyright (C) 2013 Philippe Gerum <rpm@xenomai.org>.
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*
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* Xenomai is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; either version 2 of the License,
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* or (at your option) any later version.
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*
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* Xenomai 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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* You should have received a copy of the GNU General Public License
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* along with Xenomai; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#ifndef _COBALT_KERNEL_SCHED_QUOTA_H
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#define _COBALT_KERNEL_SCHED_QUOTA_H
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#ifndef _COBALT_KERNEL_SCHED_H
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#error "please don't include cobalt/kernel/sched-quota.h directly"
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#endif
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/**
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* @addtogroup cobalt_core_sched
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* @{
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*/
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#ifdef CONFIG_XENO_OPT_SCHED_QUOTA
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#define XNSCHED_QUOTA_MIN_PRIO 1
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#define XNSCHED_QUOTA_MAX_PRIO 255
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#define XNSCHED_QUOTA_NR_PRIO \
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(XNSCHED_QUOTA_MAX_PRIO - XNSCHED_QUOTA_MIN_PRIO + 1)
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extern struct xnsched_class xnsched_class_quota;
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struct xnsched_quota_group {
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struct xnsched *sched;
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xnticks_t quota_ns;
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xnticks_t quota_peak_ns;
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xnticks_t run_start_ns;
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xnticks_t run_budget_ns;
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xnticks_t run_credit_ns;
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struct list_head members;
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struct list_head expired;
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struct list_head next;
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int nr_active;
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int nr_threads;
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int tgid;
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int quota_percent;
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int quota_peak_percent;
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};
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struct xnsched_quota {
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xnticks_t period_ns;
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struct xntimer refill_timer;
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struct xntimer limit_timer;
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struct list_head groups;
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};
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static inline int xnsched_quota_init_thread(struct xnthread *thread)
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{
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thread->quota = NULL;
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INIT_LIST_HEAD(&thread->quota_expired);
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return 0;
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}
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int xnsched_quota_create_group(struct xnsched_quota_group *tg,
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struct xnsched *sched,
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int *quota_sum_r);
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int xnsched_quota_destroy_group(struct xnsched_quota_group *tg,
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int force,
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int *quota_sum_r);
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void xnsched_quota_set_limit(struct xnsched_quota_group *tg,
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int quota_percent, int quota_peak_percent,
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int *quota_sum_r);
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struct xnsched_quota_group *
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xnsched_quota_find_group(struct xnsched *sched, int tgid);
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int xnsched_quota_sum_all(struct xnsched *sched);
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#endif /* !CONFIG_XENO_OPT_SCHED_QUOTA */
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/** @} */
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#endif /* !_COBALT_KERNEL_SCHED_QUOTA_H */
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