Re: [RFC PATCH] mm/damon/core: add a tracepoint for damos apply target regions

[SeongJae Park]

Hi Steven,

On Tue, 29 Aug 2023 19:16:29 -0400 Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:

> On Sun, 27 Aug 2023 00:40:45 +0000
> SeongJae Park <sj@xxxxxxxxxx> wrote:
> 
> > +	TP_STRUCT__entry(
> > +		__field(unsigned int, context_idx)
> 
> 4 bytes
> 
> > +		__field(unsigned int, scheme_idx)
> 
> 4 bytes
> 
> > +		__field(unsigned long, target_idx)
> 
> 8 bytes
> 
> > +		__field(unsigned int, nr_regions)
> 
> 4 bytes
> 
> > +		__field(unsigned long, start)
> 
> This is going to cause a 4 byte hole. I would move nr_regions after end
> so that it stays properly aligned.

That makes sense, thank you for letting me know this!  I will do so in the next
spin.


Thanks,
SJ

> 
> -- Steve
> 
> 
> 
> > +		__field(unsigned long, end)
> > +		__field(unsigned int, nr_accesses)
> > +		__field(unsigned int, age)
> > +	),
> > +
>