On Mon, 17 Jan 2022 10:09:14 -0800
Beau Belgrave <beaub@xxxxxxxxxxxxxxxxxxx> wrote:
> On Tue, Jan 18, 2022 at 12:45:17AM +0900, Masami Hiramatsu wrote:
> > Hi Beau,
> >
> > On Tue, 11 Jan 2022 09:25:51 -0800
> > Beau Belgrave <beaub@xxxxxxxxxxxxxxxxxxx> wrote:
> >
> > > +static int user_event_show(struct seq_file *m, struct dyn_event *ev)
> > > +{
> > > + struct user_event *user = container_of(ev, struct user_event, devent);
> > > + struct ftrace_event_field *field, *next;
> > > + struct list_head *head;
> > > + int depth = 0;
> > > +
> > > + seq_printf(m, "%s%s", USER_EVENTS_PREFIX, EVENT_NAME(user));
> > > +
> > > + head = trace_get_fields(&user->call);
> > > +
> > > + list_for_each_entry_safe_reverse(field, next, head, link) {
> > > + if (depth == 0)
> > > + seq_puts(m, " ");
> > > + else
> > > + seq_puts(m, "; ");
> > > + seq_printf(m, "%s %s", field->type, field->name);
> > > + depth++;
> > > + }
> > > +
> > > + seq_puts(m, "\n");
> > > +
> > > + return 0;
> > > +}
> >
> > Let me confirm just one point. Your syntax supports
> >
> > [__data_loc|__rel_loc] [unsigned] TYPE[\[LEN\]] NAME
> >
> > or
> >
> > struct TYPE NAME SIZE
> >
> > for the fields, right? In that case, above seq_printf() seems not enough.
>
> Yep, I see.
>
> The non-struct cases work as expected from my testing:
> echo 'u:test unsigned char msg[20]' > dynamic_events
> cat dynamic_events
> u:test unsigned char msg[20]
>
> In the struct case you are right, it's missing the size. Good catch!
> I'll fix this up!
>
> Was there another case you had in mind that I might have missed beyond
> the struct case?
No, that's the only one which I found :)
>
> I also would like, since I'm re-spinning, to fix a warning the intel bot
> found related to the same code pulled from single_open, etc.
>
> See https://lore.kernel.org/llvm/YeGk0nIH9x91k01I@archlinux-ax161/
OK, I'll then wait for your next version.
Thank you!
>
> >
> > Thank you,
> >
> >
> > --
> > Masami Hiramatsu <mhiramat@xxxxxxxxxx>
>
> Thanks,
> -Beau
--
Masami Hiramatsu <mhiramat@xxxxxxxxxx>
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