Question

i am new to device driver coding and want to get a clear idea about the struct tq_struct. searched for the documents that explaining well about the structure and its usage, but not get enough documents or reference.

i have the following questions unanswered.

1)why we using tq_struct ?.
2)from where i can get the structure in ubuntu-11.04 ?.
3)how we can use the structure ?.

can anyone help me?. please give some reference and documents.

thanks.

Answer 1

I believe struct tq_struct is a very, very old name for what 2.6 kernels now use struct work_struct for. And that is a data structure defined in <linux/workqueue.h> — it is used with schedule_work(), queue_work() and so on, to define a unit of work (function pointer plus context value) that should be executed in process context.