More generic_load preliminaries

[Andrew Cagney]

Stan Shebs wrote:
> 
>    From: Andrew Cagney <ac131313@cygnus.com>
>    Date: Mon, 18 Oct 1999 19:47:03 +1000
> 
>    Apart from minor cleanups to generic_load, this patch changes the
>    download summary message to:
> 
>            Transfer rate: 5139 bits/sec, 93 bytes/write.
> 
>    The ``, 93 bytes/write'' is new.
> 
> But what does it mean??  I as a user know about and am interested in
> bits/sec, because I can compare that to nominal baud rate and see how
> well the line is being used.  On the other hand, I don't know what
> "bytes/write" means.  If I didn't know anything about GDB, I might
> guess that it means calls to write(), that being the only literal
> write operation I know of.

I'll expand on it a little.  The main objective is to drop a hint that
new user that perhaphs what they are seeing is sub-optimal.  It's like
bits/sec.  Seeing 8bits/sec on an ethernet suggests something is broken.

> I suggest putting it on a separate line and adding more explanatory
> material - "output written in multiple chunks, averaging NN
> bytes/chunk" or something like that.  Since this potentially comes up
> for every unuspecting embedded user from now on, it's worth giving
> them an extra hint as to what it means.
> 
> Is there any reason not to just flush report_transfer_performance?

Eventually, that function is called in more places then you might
expect.

	enjoy,
		Andrew