linux-kernel - Re: [PATCH 7/8] ftrace: Add multi direct modify interface

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Date:   Tue, 19 Oct 2021 16:47:53 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     bpf@...r.kernel.org, linux-kernel@...r.kernel.org,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andriin@...com>
Subject: Re: [PATCH 7/8] ftrace: Add multi direct modify interface

On Tue, Oct 19, 2021 at 10:44:11AM -0400, Steven Rostedt wrote:
> On Tue, 19 Oct 2021 16:03:03 +0200
> Jiri Olsa <jolsa@...hat.com> wrote:
> 
> > > You can make sure the patches in there have your latest version, as you can
> > > review my patch. I'll update the tags if you give me one.  
> > 
> > I'm getting error when compiling:
> > 
> >   CC      kernel/trace/ftrace.o
> > kernel/trace/ftrace.c: In function ‘modify_ftrace_direct_multi’:
> > kernel/trace/ftrace.c:5608:2: error: label ‘out_unlock’ defined but not used [-Werror=unused-label]
> 
> Ah, I don't think I've been hit by the "-Werror" yet ;-)
> 
> 
> >  5608 |  out_unlock:
> >       |  ^~~~~~~~~~
> > 
> > looks like out_unlock is nolonger needed, I removed it
> 
> My tests would have found this, as it has a check for "new warnings".
> 
> Anyway, was this in your latest patch, or did I pull in and older one?
> 
> That is, should I expect a v2 from you?

it's on top of your ftrace/core, in your change:
  e62d91d8206e ftrace/direct: Do not disable when switching direct callers

just removing the label will fix it

also you can add my ack

Acked-by: Jiri Olsa <jolsa@...hat.com>

thanks,
jirka