There are a number of APIs that are defined for Tasklet operation in the Linux kernel. The below table provides a list of Tasklet APIs with a brief description of the APIs. For a more comprehensive list – refer /linux/interrupt.h file in the Linux kernel

Tasklet API	Description
tasklet_init	Initialize the tasklet. Used in dynamic initialization of tasklet
tasklet_kill	Kill the tasklet instance
tasklet_schedule	Schedule the tasklet
tasklet_enable	Enable the tasklet. This function is used after tasklet_disable or if the tasklet is created with DECLARE_TASKLET_DISABLED Macro
tasklet_disable	Disable the tasklet
tasklet_hi_schedule	Schedule the tasklet. But the HI_SOFTIRQ is used instead of TASKLET_SOFTIRQ as in the case of tasklet_schedule

In addition to the above APIs, the “tasklet_init” API is being phased out and the API “tasklet_setup” is being introduced.

In addition to the APIs, the following Macros are also defined which provide static initialization for a tasklet. Even amongst these macros, the earlier MACROS are now marked as OLD and can work with the previous implementation of Tasklet invocation passing “unsigned long” data.

Tasklet MACRO	Description
DECLARE_TASKLET / DECLARE_TASKLET_OLD	Statically declare a Tasklet
DECLARE_TASKLET_DISABLED / DECLARE_TASKLET_DISABLED_OLD	Statically declare a Tasklet and disable the tasklet

Tasklet Example Code with statically initialized Tasklet