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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124/* SPDX-License-Identifier: GPL-2.0 */#ifndef _LINUX_HRTIMER_BASES_H#define _LINUX_HRTIMER_BASES_H
#include <linux/hrtimer.h>#include <linux/ktime.h>#include <linux/timerqueue.h>#include <linux/seqlock.h>
#ifdef CONFIG_64BIT# define __hrtimer_clock_base_align ____cacheline_aligned#else# define __hrtimer_clock_base_align#endif
/** * struct hrtimer_clock_base - the timer base for a specific clock * @cpu_base: per cpu clock base * @index: clock type index for per_cpu support when moving a * timer to a base on another cpu. * @clockid: clock id for per_cpu support * @seq: seqcount around __run_hrtimer * @expires_next: Absolute time of the next event in this clock base * @running: pointer to the currently running hrtimer * @active: red black tree root node for the active timers * @offset: offset of this clock to the monotonic base */struct hrtimer_clock_base { struct hrtimer_cpu_base *cpu_base; const unsigned int index; const clockid_t clockid; seqcount_raw_spinlock_t seq; ktime_t expires_next; struct hrtimer *running; struct timerqueue_linked_head active; ktime_t offset;} __hrtimer_clock_base_align;
enum hrtimer_base_type { HRTIMER_BASE_MONOTONIC, HRTIMER_BASE_REALTIME, HRTIMER_BASE_BOOTTIME, HRTIMER_BASE_TAI, HRTIMER_BASE_MONOTONIC_SOFT, HRTIMER_BASE_REALTIME_SOFT, HRTIMER_BASE_BOOTTIME_SOFT, HRTIMER_BASE_TAI_SOFT, HRTIMER_MAX_CLOCK_BASES};
/** * struct hrtimer_cpu_base - the per cpu clock bases * @lock: lock protecting the base and associated clock bases and timers * @cpu: cpu number * @active_bases: Bitfield to mark bases with active timers * @clock_was_set_seq: Sequence counter of clock was set events * @hres_active: State of high resolution mode * @deferred_rearm: A deferred rearm is pending * @deferred_needs_update: The deferred rearm must re-evaluate the first timer * @hang_detected: The last hrtimer interrupt detected a hang * @softirq_activated: displays, if the softirq is raised - update of softirq * related settings is not required then. * @nr_events: Total number of hrtimer interrupt events * @nr_retries: Total number of hrtimer interrupt retries * @nr_hangs: Total number of hrtimer interrupt hangs * @max_hang_time: Maximum time spent in hrtimer_interrupt * @softirq_expiry_lock: Lock which is taken while softirq based hrtimer are expired * @online: CPU is online from an hrtimers point of view * @timer_waiters: A hrtimer_cancel() waiters for the timer callback to finish. * @expires_next: Absolute time of the next event, is required for remote * hrtimer enqueue; it is the total first expiry time (hard * and soft hrtimer are taken into account) * @next_timer: Pointer to the first expiring timer * @softirq_expires_next: Time to check, if soft queues needs also to be expired * @softirq_next_timer: Pointer to the first expiring softirq based timer * @deferred_expires_next: Cached expires next value for deferred rearm * @clock_base: Array of clock bases for this cpu * * Note: next_timer is just an optimization for __remove_hrtimer(). * Do not dereference the pointer because it is not reliable on * cross cpu removals. */struct hrtimer_cpu_base { raw_spinlock_t lock; unsigned int cpu; unsigned int active_bases; u32 clock_was_set_seq; bool hres_active; bool deferred_rearm; bool deferred_needs_update; bool hang_detected; bool softirq_activated; bool online;#ifdef CONFIG_HIGH_RES_TIMERS unsigned int nr_events; unsigned short nr_retries; unsigned short nr_hangs; unsigned int max_hang_time;#endif#ifdef CONFIG_PREEMPT_RT spinlock_t softirq_expiry_lock; atomic_t timer_waiters;#endif ktime_t expires_next; struct hrtimer *next_timer; ktime_t softirq_expires_next; struct hrtimer *softirq_next_timer; ktime_t deferred_expires_next; struct hrtimer_clock_base clock_base[HRTIMER_MAX_CLOCK_BASES]; call_single_data_t csd;} ____cacheline_aligned;
/* * Helper function to check, whether the timer is running the callback * function */static inline int hrtimer_callback_running(struct hrtimer *timer){ return timer->base->running == timer;}
#endif