linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 *  Copyright(C) 2005-2006, Thomas Gleixner <tglx@linutronix.de>

 *  Copyright(C) 2005-2007, Red Hat, Inc., Ingo Molnar

 *  Copyright(C) 2006-2007  Timesys Corp., Thomas Gleixner

 *

 *  High-resolution kernel timers

 *

 *  In contrast to the low-resolution timeout API, aka timer wheel,

 *  hrtimers provide finer resolution and accuracy depending on system

 *  configuration and capabilities.

 *

 *  Started by: Thomas Gleixner and Ingo Molnar

 *

 *  Credits:

 *  Based on the original timer wheel code

 *

 *  Help, testing, suggestions, bugfixes, improvements were

 *  provided by:

 *

 *  George Anzinger, Andrew Morton, Steven Rostedt, Roman Zippel

 *  et. al.

 */

​

#include <linux/cpu.h>

#include <linux/export.h>

#include <linux/percpu.h>

#include <linux/hrtimer.h>

#include <linux/notifier.h>

#include <linux/syscalls.h>

#include <linux/interrupt.h>

#include <linux/tick.h>

#include <linux/seq_file.h>

#include <linux/err.h>

#include <linux/debugobjects.h>

#include <linux/sched/signal.h>

#include <linux/sched/sysctl.h>

#include <linux/sched/rt.h>

#include <linux/sched/deadline.h>

#include <linux/sched/nohz.h>

#include <linux/sched/debug.h>

#include <linux/timer.h>

#include <linux/freezer.h>

#include <linux/compat.h>

​

#include <linux/uaccess.h>

​

#include <trace/events/timer.h>

​

#include "tick-internal.h"

​

/*

 * Masks for selecting the soft and hard context timers from

 * cpu_base->active

 */

#define MASK_SHIFT      (HRTIMER_BASE_MONOTONIC_SOFT)

#define HRTIMER_ACTIVE_HARD ((1U << MASK_SHIFT) - 1)

#define HRTIMER_ACTIVE_SOFT (HRTIMER_ACTIVE_HARD << MASK_SHIFT)

#define HRTIMER_ACTIVE_ALL  (HRTIMER_ACTIVE_SOFT | HRTIMER_ACTIVE_HARD)

​

/*

 * The timer bases:

 *