Re: [patch V2 01/29] tracing: Cleanup stack trace code

[Steven Rostedt]

On Fri, 19 Apr 2019 00:44:17 +0200 (CEST)
Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:

> On Thu, 18 Apr 2019, Steven Rostedt wrote:
> > On Thu, 18 Apr 2019 10:41:20 +0200
> > Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
> >   
> > > @@ -412,23 +404,20 @@ stack_trace_sysctl(struct ctl_table *tab
> > >  		   void __user *buffer, size_t *lenp,
> > >  		   loff_t *ppos)
> > >  {
> > > -	int ret;
> > > +	int ret, was_enabled;  
> > 
> > One small nit. Could this be:
> > 
> > 	int was_enabled;
> > 	int ret;
> > 
> > I prefer only joining variables that are related on the same line.
> > Makes it look cleaner IMO.  
> 
> If you wish so. To me it's waste of screen space :)

At least you didn't say it helps the compiler ;-)

> 
> > >  
> > >  	mutex_lock(&stack_sysctl_mutex);
> > > +	was_enabled = !!stack_tracer_enabled;
> > >    
> > 
> > Bah, not sure why I didn't do it this way to begin with. I think I
> > copied something else that couldn't do it this way for some reason and
> > didn't put any brain power behind the copy. :-/ But that was back in
> > 2008 so I blame it on being "young and stupid" ;-)  
> 
> The young part is gone for sure :)

I purposely set you up for that response.

> 
> > Other then the above nit and removing the unneeded +1 in max_entries:  
> 
> s/+1/-1/

That was an ode to G+

-- Steve