Hi Paul....
> can anyone tell me how does the code above give me current task_struct
> structure? and what about current_thread_info() function? is it useless now?
let me try to intepret it for you...
First, to ease our understanding, let's convert :
return x86_read_percpu(current_task)
to:
percpu_from_op("mov", per_cpu__current_task)
ret__ is probably the variable which substitute the name real variable
that is referred by the above "return x86_read_percpu". Assume we hit
the third case ("case 3:"), I think if the asm macro is expanded, we
will see:
mov __percpu_seg(var), ret__
Note: Above is my best guess on what the asm block mean:
So for the final puzzle, could you check what __percpu_seg() means?
regards,
Mulyadi
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