netdev - Re: [PATCH 03/19] x86/ftrace: Make function graph use ftrace directly

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Message-ID: <20210608151144.6f4531c1@oasis.local.home>
Date:   Tue, 8 Jun 2021 15:11:44 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     Andrii Nakryiko <andrii.nakryiko@...il.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andriin@...com>,
        Networking <netdev@...r.kernel.org>, bpf <bpf@...r.kernel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...omium.org>, Daniel Xu <dxu@...uu.xyz>,
        Viktor Malik <vmalik@...hat.com>
Subject: Re: [PATCH 03/19] x86/ftrace: Make function graph use ftrace
 directly

On Tue, 8 Jun 2021 20:51:25 +0200
Jiri Olsa <jolsa@...hat.com> wrote:

> > > +                                  FTRACE_OPS_FL_PID
> > > +                                  FTRACE_OPS_GRAPH_STUB,  
> > 
> > nit: this looks so weird... Why not define FTRACE_OPS_GRAPH_STUB as
> > zero in case of #ifdef ftrace_graph_func? Then it will be natural and
> > correctly looking | FTRACE_OPS_GRAPH_STUB?  

I have no idea why I did that :-/  But it was a while ago when I wrote
this code. I think there was a reason for it, but with various updates,
that reason disappeared.


> 
> ok, I can change that

Yes, please do.

Thanks,

-- Steve