linux msleep

We have introduced the implementation principles of low-resolution timer and high-precision timer in the previous chapters. In order to facilitate other subsystems, the kernel provides some APIs for delay or scheduling in the time subsystem, for

We have introduced the implementation principle of low-resolution timers and high-precision timers in the previous chapters, and the kernel has provided some APIs for delay or scheduling in the time subsystem to facilitate other subsystems, such as

Time Unit:Milliseconds (ms), microseconds (μs), nanosecond (ns), Picosecond (PS), femtosecond (FS), seconds, and seconds1 s = 10^3 ms = 10^6 US = 10^9 NS = 10^12 PS = 10^15 fs=10^18 PST =10^21 parsecs =10^43 Planck constantIn the development of

In Linux driver development, delay functions are often used: Msleep,mdelay/udelay. Although both Msleep and Mdelay have a delaying effect, they are different. 1.) for the module itself Mdelay is a busy wait function and cannot run other tasks during

In the development of Linux driver, the delay function is often used: Msleep,mdelay/udelay.Although both Msleep and mdelay have delayed effects, they are different.1.) for the module itselfMdelay is a busy wait function and cannot run other tasks

Incompatible use of msleep or schedule_timeout in tasklet? -- Linux general technology-Linux technology and application information. For details, refer to the following section. In ARM + Linux drivers, tasklet is used for interruption, msleep or

The first class of delay function prototypes are: (Busy, etc.)void Ndelay (unsigned long nsecs);void Udelay (unsigned long usecs);void Mdelay (unsigned long msecs);Description: Kernel functions ndelay, Udelay, and mdelay are useful for short delays,

kernel timer (2.6.23) First, the definition:/include/linux/timer.h

/** * Author:hasen * reference: "Linux device driver Development specific EXPLANATION" * Brief introduction: Android small Novice Linux * device Driver Development Learning Journey * Theme: Clock * date:2014-11-15 * *First, the kernel timer1

Linux Kernel Timer I. Definition /Include/Linux/Timer. h struct timer_list {struct list_head entry;unsigned long expires;void (*function)(unsigned long);unsigned long data;struct tvec_t_base_s *base;#ifdef CONFIG_TIMER_STATSvoid *start_site;char