linux-kernel - Re: change uprobe_events default ? Was: [PATCH] perf: Rename CONFIG_[UK]PROBE_EVENT to CONFIG_[UK]PROBE

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Date:   Thu, 16 Mar 2017 11:17:58 +0900
From:   Namhyung Kim <namhyung@...nel.org>
To:     David Ahern <dsahern@...il.com>
Cc:     Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>,
        Alexei Starovoitov <alexei.starovoitov@...il.com>,
        Anton Blanchard <anton@...abs.org>,
        David Miller <davem@...emloft.net>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>,
        Hemant Kumar <hemant@...ux.vnet.ibm.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
        Wang Nan <wangnan0@...wei.com>, Jiri Olsa <jolsa@...nel.org>,
        alexander.shishkin@...ux.intel.com, sparclinux@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-team@....com
Subject: Re: change uprobe_events default ? Was: [PATCH] perf: Rename
 CONFIG_[UK]PROBE_EVENT to CONFIG_[UK]PROBE_EVENTS

On Wed, Mar 15, 2017 at 07:10:56PM -0600, David Ahern wrote:
> On 3/15/17 7:06 PM, Arnaldo Carvalho de Melo wrote:
> > Added more people to the CC list.
> > 
> > Em Wed, Mar 15, 2017 at 05:58:19PM -0700, Alexei Starovoitov escreveu:
> >> On Thu, Feb 16, 2017 at 05:00:50PM +1100, Anton Blanchard wrote:
> >>> We have uses of CONFIG_UPROBE_EVENT and CONFIG_KPROBE_EVENT as
> >>> well as CONFIG_UPROBE_EVENTS and CONFIG_KPROBE_EVENTS. Consistently
> >>> use the plurals.
> >  
> >> this rename made me notice that UPROBE_EVENTS still defaults to 'n'.
> >> this is key feature that all distros enable, so having default 'n'
> >> is kinda saying that it's not something that should be turned on
> >> or used widely. which is obviously not the case.
> >> imo it's time to change it to 'y'.
> >> Thoughts?
> > 
> > Agreed, I also found it strange that it was disabled by default when I
> > recently did a 'make oldconfig' :-\
> 
> Debian stretch, Ubuntu 16.10, Fedora 26 all have it enabled. Perhaps it
> should default on.

+1

Archlinux also has it enabled.

Thanks,
Namhyung