Re: [patch 9/9] Scheduler profiling - Use conditional calls

William Lee Irwin III
2007-05-30T20:58:38Z

On Wed, May 30, 2007 at 10:00:34AM -0400, Mathieu Desnoyers wrote:
> Use conditional calls with lower d-cache hit in optimized version as a
> condition for scheduler profiling call.
[...]
> + if (prof_on)
> + BUG_ON(cond_call_arm("profile_on"));

What's the point of this BUG_ON()? The condition is a priori impossible.

On Wed, May 30, 2007 at 10:00:34AM -0400, Mathieu Desnoyers wrote:
> - profile_hit(SCHED_PROFILING, __builtin_return_address(0));
> + cond_call(profile_on,
> + profile_hit(SCHED_PROFILING, __builtin_return_address(0)));

It'd probably be prettier to stuff cond_call() inside a macro that does
something like this named profile_hit() with the old profile_hit()
renamed to __profile_hit() etc. Otherwise fine.

-- wli