linux-kernel - Re: [RFC 2/3] uprobe: drop isdigit() check in create_trace

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Date:   Tue, 30 Aug 2016 16:37:28 +0200
From:   Oleg Nesterov <oleg@...hat.com>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     Dmitry Safonov <dsafonov@...tuozzo.com>,
        linux-kernel@...r.kernel.org, mingo@...hat.com,
        luto@...capital.net, tglx@...utronix.de, hpa@...or.com,
        x86@...nel.org, 0x7f454c46@...il.com, viro@...iv.linux.org.uk
Subject: Re: [RFC 2/3] uprobe: drop isdigit() check in create_trace_uprobe

On 08/29, Steven Rostedt wrote:
>
> On Mon, 29 Aug 2016 18:58:13 -0400
> Steven Rostedt <rostedt@...dmis.org> wrote:
>
> > On Thu, 25 Aug 2016 18:21:09 +0300
> > Dmitry Safonov <dsafonov@...tuozzo.com> wrote:
> >
> > > It's useless. Before:
> > >   [tracing]# echo 'p:test /a:0x0' >> uprobe_events
> > >   [tracing]# echo 'p:test a:0x0' >> uprobe_events
> > >   -bash: echo: write error: No such file or directory
> > >   [tracing]# echo 'p:test 1:0x0' >> uprobe_events
> > >   -bash: echo: write error: Invalid argument
> > > 
> > > After:
> > >   [tracing]# echo 'p:test 1:0x0' >> uprobe_events
> > >   -bash: echo: write error: No such file or directory
> > > 
> > > Signed-off-by: Dmitry Safonov <dsafonov@...tuozzo.com>  
> > 
> > Acked-by: Steven Rostedt <rostedt@...dmis.org>
>
> Actually, this patch seems agnostic to the series. I'll just pull it in
> now.

Yes, agreed, this isdigit() is pointless, thanks.

Oleg.