creation of blktrace completion messages

[Matthias Brugger]

On 01/18/2012 02:59 PM, Matthias Brugger wrote:
> Hi all,
>
> where does the kernel create the blktrace completion messages?

the mesage is created in block/blk-core.c:blk_update_request which calls 
trace_block_rq_complete

>
> Is it done in the interrupt routine or in the block layer.
>
> I just found:
> register_trace_block_rq_complete(blk_add_trace_rq_complete, NULL);
> and
> register_trace_block_bio_complete(blk_add_trace_bio_complete, NULL);
>
> But I don't find the corresponding functions.
>
> Thanks,
> Matthias
>
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