1 // SPDX-License-Identifier: GPL-2.0
12 #include "tick-internal.h"
27 	wake_up_process(timeout->task);  in process_timeout()
31  * schedule_timeout - sleep until timeout
34  * Make the current task sleep until @timeout jiffies have elapsed.
35  * The function behavior depends on the current task state
38  * %TASK_RUNNING - the scheduler is called, but the task does not sleep
42  * %TASK_UNINTERRUPTIBLE - at least @timeout jiffies are guaranteed to
43  * pass before the routine returns unless the current task is explicitly
46  * %TASK_INTERRUPTIBLE - the routine may return early if a signal is
47  * delivered to the current task or the current task is explicitly woken
50  * The current task state is guaranteed to be %TASK_RUNNING when this
59  * to be non-negative.
95 	timer.task = current;  in schedule_timeout()
105 	timeout = expire - jiffies;  in schedule_timeout()
118  * schedule_timeout_interruptible - sleep until timeout (interruptible)
133  * schedule_timeout_killable - sleep until timeout (killable)
148  * schedule_timeout_uninterruptible - sleep until timeout (uninterruptible)
163  * schedule_timeout_idle - sleep until timeout (idle)
180  * schedule_hrtimeout_range_clock - sleep until timeout
183  * @mode:	timer mode
190 					   const enum hrtimer_mode mode, clockid_t clock_id)  in schedule_hrtimeout_range_clock()  argument
208 		return -EINTR;  in schedule_hrtimeout_range_clock()
211 	hrtimer_setup_sleeper_on_stack(&t, clock_id, mode);  in schedule_hrtimeout_range_clock()
213 	hrtimer_sleeper_start_expires(&t, mode);  in schedule_hrtimeout_range_clock()
223 	return !t.task ? 0 : -EINTR;  in schedule_hrtimeout_range_clock()
228  * schedule_hrtimeout_range - sleep until timeout
231  * @mode:	timer mode
233  * Make the current task sleep until the given expiry time has
235  * the current task state has been set (see set_current_state()).
243  * You can set the task state as follows -
245  * %TASK_UNINTERRUPTIBLE - at least @timeout time is guaranteed to
246  * pass before the routine returns unless the current task is explicitly
249  * %TASK_INTERRUPTIBLE - the routine may return early if a signal is
250  * delivered to the current task or the current task is explicitly woken
253  * The current task state is guaranteed to be TASK_RUNNING when this
258  * by an explicit wakeup, it returns -EINTR.
261 				     const enum hrtimer_mode mode)  in schedule_hrtimeout_range()  argument
263 	return schedule_hrtimeout_range_clock(expires, delta, mode,  in schedule_hrtimeout_range()
269  * schedule_hrtimeout - sleep until timeout
271  * @mode:	timer mode
276 int __sched schedule_hrtimeout(ktime_t *expires, const enum hrtimer_mode mode)  in schedule_hrtimeout()  argument
278 	return schedule_hrtimeout_range(expires, 0, mode);  in schedule_hrtimeout()
283  * msleep - sleep safely even with waitqueue interruptions
323  * msleep_interruptible - sleep waiting for signals
338 	while (timeout && !signal_pending(current))  in msleep_interruptible()
345  * usleep_range_state - Sleep for an approximate time in a given state
348  * @state:	State of the current task that will be while sleeping
358  * In non-atomic context where the exact wakeup time is flexible, use
360  * responsiveness by avoiding the CPU-hogging busy-wait of udelay().
365 	u64 delta = (u64)(max - min) * NSEC_PER_USEC;  in usleep_range_state()