linux-kernel - Re: [PATCH v3] samples/kprobes: Fix typo in handler

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Message-ID: <81d398b86b1c7214e64a0dd25a9ef090f86bc16c.camel@perches.com>
Date:   Sun, 16 May 2021 06:14:58 -0700
From:   Joe Perches <joe@...ches.com>
To:     Masami Hiramatsu <mhiramat@...nel.org>,
        Tiezhu Yang <yangtiezhu@...ngson.cn>
Cc:     Jonathan Corbet <corbet@....net>, Marc Koderer <marc@...erer.com>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Christian Brauner <christian.brauner@...ntu.com>,
        Jisheng Zhang <jszhang@...nel.org>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        Johannes Thumshirn <jthumshirn@...e.de>,
        Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
        Randy Dunlap <randy.dunlap@...cle.com>,
        Ananth N Mavinakayanahalli <ananth@...ibm.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org, Xuefeng Li <lixuefeng@...ngson.cn>
Subject: Re: [PATCH v3] samples/kprobes: Fix typo in handler_{post,fault}()

On Sun, 2021-05-16 at 19:02 +0900, Masami Hiramatsu wrote:
> On Sat, 15 May 2021 10:39:06 +0800
> Tiezhu Yang <yangtiezhu@...ngson.cn> wrote:
> 
> > It should use post_handler instead of pre_handler in handler_post().
> > 
> > As Joe Perches suggested, it would be better to use pr_fmt and remove
> > all the embedded pre/post strings. This would change the style of the
> > output through.
> > 
> 
> NAK, this also shows which handler cought the event.
> If you wanna change it. Please replace it with __func__ instead.
[]
> > diff --git a/samples/kprobes/kprobe_example.c b/samples/kprobes/kprobe_example.c
[]
> > @@ -10,6 +10,8 @@
> >   * whenever kernel_clone() is invoked to create a new process.
> >   */
> >  
> > +#define pr_fmt(fmt) "%s: " fmt, __func__

It does that already via the pr_fmt which uses __func__.