Re: [RFC] gcc feature request: Moving blocks into sections

[OndÅej BÃlka]

On Tue, Aug 06, 2013 at 08:56:00PM -0400, Steven Rostedt wrote:
> On Tue, 2013-08-06 at 20:45 -0400, Steven Rostedt wrote:
> 
> > [    3.387362] short jumps: 106
> > [    3.390277]  long jumps: 330
> > 
> > Thus, approximately 25%. Not bad.
> 
> Also, where these happen to be is probably even more important than how
> many. If all the short jumps happen in slow paths, it's rather
> pointless. But they seem to be in some rather hot paths. I had it print
> out where it placed the short jumps too:
> 
 
> The kmem_cache_* and the try_to_wake_up* are the hot paths that caught
> my eye.
> 
> But still, is this worth it?
>
Add short_counter,long_counter and before increment counter before each
jump. That way we will know how many short/long jumps were taken. 
> -- Steve
> 

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