![]() ![]() Here we say that the time a is after the time b, which means that the time value a≥b. Often need to compare two time values in timer applications to determine whether the timer has timed out, so the Linux kernel defines four time relationship comparison operation macros in the timer.h header file. The data field is used by the kernel as the call parameter of the function function. Allwinner A23 Evaluation Board sun8i-a23-evb.dtb Allwinner A31 APP4 EVB1 Evaluation Board sun6i-a31-app4-evb1.dtb Allwinner A83T H8Homlet Proto Dev Board v2.0 sun8i-a83t-allwinner-h8homlet-v2. When the timer expires, the kernel executes the function specified by function. Void (*function)(unsigned long) //Point to an executable function. ![]() When the jiffies value is reached, the function function will be called and data will be passed as a parameter. Unsigned long expires //expires field represents the jiffies value expected to be executed by the timer. Allwinner H3 maker board could be smallest Linux-powered SBC yet. It focuses on the open source hardware development board of ARM and MCU series. Struct list_head entry //Doubly linked list element list: used to connect multiple timers into a two-way circular queue. 0, Ubuntu, Debian, Rasberry Pi Image, it uses the AllWinner A64 SoC. ![]()
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