linux-kernel - Re: [PATCH 1/4] perf tools: Allow use of an exclusive option more than once

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Date:	Mon, 12 Jan 2015 11:02:28 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Cc:	Namhyung Kim <namhyung@...nel.org>, Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Jiri Olsa <jolsa@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>
Subject: Re: [PATCH 1/4] perf tools: Allow use of an exclusive option more
 than once

Em Mon, Jan 12, 2015 at 08:44:23PM +0900, Masami Hiramatsu escreveu:
> (2015/01/10 19:33), Namhyung Kim wrote:
> > The exclusive options are to prohibit use of conflicting options at the
> > same time.  But it had a side effect that it also limits a such option
> > can be used at most once.  Currently the only user of the flag is perf
> > probe and it allows to use such options more than once, but when one
> > tries to use it, perf will fail like below:
> > 
> >   $ sudo perf probe -x /lib/libc-2.20.so --add malloc --add free
> >     Error: option `add' cannot be used with add
> >   ...
> > 
> > Cc: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
> 
> Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>

Thanks, applied to perf/urgent
 
> Thanks!
> 
> > Signed-off-by: Namhyung Kim <namhyung@...nel.org>
> > ---
> >  tools/perf/util/parse-options.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/tools/perf/util/parse-options.c b/tools/perf/util/parse-options.c
> > index f62dee7bd924..4a015f77e2b5 100644
> > --- a/tools/perf/util/parse-options.c
> > +++ b/tools/perf/util/parse-options.c
> > @@ -46,7 +46,7 @@ static int get_value(struct parse_opt_ctx_t *p,
> >  		return opterror(opt, "is not usable", flags);
> >  
> >  	if (opt->flags & PARSE_OPT_EXCLUSIVE) {
> > -		if (p->excl_opt) {
> > +		if (p->excl_opt && p->excl_opt != opt) {
> >  			char msg[128];
> >  
> >  			if (((flags & OPT_SHORT) && p->excl_opt->short_name) ||
> > 
> 
> 
> -- 
> Masami HIRAMATSU
> Software Platform Research Dept. Linux Technology Research Center
> Hitachi, Ltd., Yokohama Research Laboratory
> E-mail: masami.hiramatsu.pt@...achi.com
> 
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