linux-kernel - Re: [PATCH] fgraph: Remove redundant ftrace_graph_notrace

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Message-ID: <20190731103143.ear4erai6yvt4ct6@mail.google.com>
Date:   Wed, 31 Jul 2019 18:31:45 +0800
From:   Changbin Du <changbin.du@...il.com>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     Changbin Du <changbin.du@...il.com>,
        Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fgraph: Remove redundant ftrace_graph_notrace_addr() test

On Tue, Jul 30, 2019 at 12:15:27PM -0400, Steven Rostedt wrote:
> On Tue, 30 Jul 2019 22:08:50 +0800
> Changbin Du <changbin.du@...il.com> wrote:
> 
> > We already have tested it before. The second one should be removed.
> > With this change, the performance should have little improvement.
> > 
> > Fixes: 9cd2992f2d6c ("fgraph: Have set_graph_notrace only affect function_graph tracer")
> 
> Thanks! I think this should even be marked for stable. Not really a bad
> bug, but a bug none the less.
>
Steven, need I resend this patch and cc stable mailist?

> -- Steve
> 
> 
- 
Cheers,
Changbin Du