Messages in this thread | | | Date | Fri, 21 Nov 2008 18:33:52 -0500 (EST) | From | Steven Rostedt <> | Subject | Re: [PATCH 4/4] trace: profile all if conditionals |
| |
On Fri, 21 Nov 2008, Andrew Morton wrote: > > > > +#define if(cond) if (__builtin_constant_p((cond)) ? !!(cond) : \ > > wheee... > > Now how are you going to profile ?:, while, for(;expr;), etc? ;)
I don't know. Give me a few months, I'll figure out a way ;-)
This is just a way to see if we should add or remove more if annotations.
(i.e. likely() and unlikey() )
-- Steve
| |