jiffies

The first function returns the current jiffies, while the second returns the difference of the current and the value that the caller passes in.

第一个函数会返回当前jiffy，而第二个函数则返回当前值与所传递进来的值之间的差值。

C; this routine basically sets the current task's state to TASK_KILLABLE and calls schedule_timeout(), which makes the calling task sleep for timeout number of jiffies.

该例程主要用于将当前任务的状态设置为TASK KILLABLE并调用schedule timeout（），它用于让调用任务睡眠timeout个jiffies。

The first thing you'll notice is that time is represented not in jiffies but in a special data type called ktime.

应该注意的第一点是：时间不是用jiffies表示的，而是以一种名为ktime的特殊数据类型表示。

The delay in queue_delayed_work() is given to ensure that at least a minimum delay in jiffies is given before the workqueue entry actually starts executing.

在queue delay work（）中指定delay，是为了保证至少在经过一段给定的最小延迟时间以后，工作队列中的任务才可以真正执行。

Even the jiffies ( small packets of kernel time for timing interrupts) are not altered and this lets you debug the Interrupt Service Routine.

此时连jiffies（用来对中断进行计时的内核时钟滴答数）都不会改变，这样就可以对ISR进行调试了。

Depending upon your processor and the speed at which it operates, your mileage may vary, but the API does offer a way to schedule time-outs below the jiffies tick interval.

根据您的处理器和处理器运行的速度，您的里程（mileage）可能会不同，但这个API的确提供了一种方法来在jiffies滴答间隔下调度超时。

This API permits the construction of timers that operate in the jiffies domain ( minimum4ms time-out).

这个API允许构造在jiffies域（最低4ms超时）中运行的计时器。

The number of jiffies that this process has been scheduled in kernel mode.

瞬间进程正在使用内核模式的数量。

This function calculates the difference between two jiffies values, and then provides the result to the user through a user-space pointer.

这个函数会计算这两个jiffies值之间的差值，然后通过一个用户空间指针将结果提供给用户。

Using jiffies as the granularity of time, a number of groups is defined that represents future periods of expiration ( where each group is represented by a list of timers).

使用jiffies作为时间粒度，定义了几个组，它们表示将来的过期时段（其中每个组通过一列计时器表示）。

In the Linux kernel, time is measured by a global variable named jiffies, which identifies the number of ticks that have occurred since the system was booted.

在Linux内核中，时间由一个名为jiffies的全局变量衡量，该变量标识系统启动以来经过的滴答数。