RE: [PATCH 1/2] rtlwifi: Fix improve function 'rtl_addr_delay()' in core.c

[David Laight]

From: Larry Finger
> Sent: 03 February 2016 19:45
...
> The performance will depend on where you satisfy the condition. All switch cases
> have the same execution time, but in the if .. else if .. else form, the earlier
> tests execute more quickly. I'm not sure that one can make any blanket statement
> about performance. Certainly, the switch version will be larger. For a switch
> with 8 cases plus default, the object code if 43 bytes larger than the nested
> ifs in a test program that I created. That is a significant penalty.

There is also the penalty of the (likely) data cache miss reading the jump table.
But given this code is all about generating a variable delay the execution
speed is probably irrelevant.

It would be much more interesting if the delay could be changed for sleeps.

	David