Re: [PATCH 5/7] powerpc/ftrace: Update ftrace_location() for powerpc -mprofile-kernel

[Naveen N. Rao]

Steven Rostedt wrote:
> On Tue, 18 Jun 2019 20:17:04 +0530
> "Naveen N. Rao" <naveen.n.rao@xxxxxxxxxxxxxxxxxx> wrote:
>
> > @@ -1551,7 +1551,7 @@ unsigned long ftrace_location_range(unsigned long start, unsigned long end)
> >  	key.flags = end;	/* overload flags, as it is unsigned long */
> >  
> >  	for (pg = ftrace_pages_start; pg; pg = pg->next) {
> > -		if (end < pg->records[0].ip ||
> > +		if (end <= pg->records[0].ip ||
>
> This breaks the algorithm. "end" is inclusive. That is, if you look for
> a single byte, where "start" and "end" are the same, and it happens to
> be the first ip on the pg page, it will be skipped, and not found.

Thanks. It looks like I should be over-riding ftrace_location() instead.  
I will update this patch.

- Naveen