On 2014-02-24 17:51, Castor Fu wrote:
I was debugging some problems with parsing fio jobs, and found
options.c:fio_get_kb_base is broken for external engines... The
parameter
'data' is either 0, td, or td->eo.  If it's td->eo it's not really
going to work.

The cleaner fix is probably to unwind passing 'data' so far down the
stack, but it
touches a lot of functions, so I thought I'd send this out now.

unsigned int fio_get_kb_base(void *data)
{
         struct thread_options *o = data;
         unsigned int kb_base = 0;

         if (o)
                 kb_base = o->kb_base;
         if (!kb_base)
                 kb_base = 1024;

         return kb_base;
}


If I replace
    if(o)
by
      if (o && (data - (void *) threads) % sizeof(threads[0]) == 0)

then it behaves as I expect when engine options use the 'k', etc.

Not sure I follow... Are you calling fio_get_kb_base() from the external engine?

--
Jens Axboe

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