Re: [PATCH v8 3/5] mm,page_owner: Display all stacks and their count

[Oscar Salvador]

On Tue, Feb 13, 2024 at 09:38:43AM +0100, Marco Elver wrote:
> On Mon, 12 Feb 2024 at 23:29, Oscar Salvador <osalvador@xxxxxxx> wrote:
> > Signed-off-by: Oscar Salvador <osalvador@xxxxxxx>
> 
> Acked-by: Marco Elver <elver@xxxxxxxxxx>

Thanks!

 
> > +                       /* This pairs with smp_load_acquire() from function
> 
> Comment should be
> 
> /*
>  *
> ...
>  */

Yap, fat fingers here.

> > +       if (!*ppos) {
> > +               /*
> > +                * This pairs with smp_store_release() from function
> > +                * add_stack_record_to_list(), so we get a consistent
> > +                * value of stack_list.
> > +                */
> > +               stack = smp_load_acquire(&stack_list);
> 
> I'm not sure if it'd make your code simpler or not: there is
> <linux/llist.h> for singly-linked linked lists, although the code to
> manage the list is simple enough I'm indifferent here. Only consider
> it if it helps you make the code simpler.

I will check if it eases the code somehow.


> > +static void stack_stop(struct seq_file *m, void *v)
> > +{
> > +}
> 
> Is this function even needed if it's empty? I recall there were some
> boilerplate "nop" functions that could be used.

I will check if seq already provides a dummy function for these cases.

-- 
Oscar Salvador
SUSE Labs