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85ecb4f722
Currently, all the event timers are associated to CPU0. These event timers are not bind to any of the IRQs and always handled(hrtimer) by CPU0. This event timers framework make sure event timers are bound to clients IRQs and when the IRQ affinity has changed event timer framework will make sure to move associated event timer to a new CPU based on IRQ affinity. CRs-fixed: 719258 Change-Id: Idbce3d5195655f558f74c208216f75515d235b8e Signed-off-by: Murali Nalajala <mnalajal@codeaurora.org>
80 lines
2.5 KiB
C
80 lines
2.5 KiB
C
/* Copyright (c) 2012, 2014, The Linux Foundation. All rights reserved.
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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 the GNU General Public License version 2 and
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* only version 2 as 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,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __ARCH_ARM_MACH_MSM_EVENT_TIMER_H
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#define __ARCH_ARM_MACH_MSM_EVENT_TIMER_H
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#include <linux/hrtimer.h>
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struct event_timer_info;
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#ifdef CONFIG_MSM_EVENT_TIMER
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/**
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* add_event_timer() : Add a wakeup event. Intended to be called
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* by clients once. Returns a handle to be used
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* for future transactions.
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* @irq : Interrupt number to track affinity.
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* @function : The callback function will be called when event
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* timer expires.
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* @data : Callback data provided by client.
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*/
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struct event_timer_info *add_event_timer(uint32_t irq,
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void (*function)(void *), void *data);
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/** activate_event_timer() : Set the expiration time for an event in absolute
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* ktime. This is a oneshot event timer, clients
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* should call this again to set another expiration.
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* @event : Event handle.
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* @event_time : Event time in absolute ktime.
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*/
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void activate_event_timer(struct event_timer_info *event, ktime_t event_time);
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/**
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* deactivate_event_timer() : Deactivate an event timer.
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* @event: event handle.
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*/
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void deactivate_event_timer(struct event_timer_info *event);
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/**
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* destroy_event_timer() : Free the event info data structure allocated during
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* add_event_timer().
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* @event: event handle.
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*/
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void destroy_event_timer(struct event_timer_info *event);
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/**
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* get_next_event_timer() : Get the next wakeup event.
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* returns a ktime value of the next
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* expiring event.
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*/
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ktime_t get_next_event_time(int cpu);
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#else
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static inline void *add_event_timer(uint32_t irq, void (*function)(void *),
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void *data)
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{
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return NULL;
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}
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static inline void activate_event_timer(void *event, ktime_t event_time) {}
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static inline void deactivate_event_timer(void *event) {}
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static inline void destroy_event_timer(void *event) {}
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static inline ktime_t get_next_event_time(int cpu)
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{
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return ns_to_ktime(0);
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}
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#endif /* CONFIG_MSM_EVENT_TIMER_MANAGER */
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#endif /* __ARCH_ARM_MACH_MSM_EVENT_TIMER_H */
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