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Date: Wed, 14 Oct 2026 21:07:16 -0700
From: Namhyung Kim <namhyung@kernel.org>
To: Changbin Du <changbin.du@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Jiri Olsa <jolsa@kernel.org>, Ian Rogers <irogers@google.com>,
	Adrian Hunter <adrian.hunter@intel.com>,
	James Clark <james.clark@linaro.org>, linux-kernel@vger.kernel.org,
	linux-perf-users@vger.kernel.org,
	David Laight <david.laight.linux@gmail.com>
Subject: Re: [PATCH v4] perf bench: Add atomic operations benchmark
Message-ID: <atBRdE0Nh8OyWiBC@z2>
References: <20261013085648.976819-1-changbin.du@gmail.com>
 <as_z4g6CZTObWm2H@google.com>
 <atA7Mgrupnil4Jcv@mail.google.com>
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In-Reply-To: <atA7Mgrupnil4Jcv@mail.google.com>

On Thu, Oct 15, 2026 at 10:38:17AM +0800, Changbin Du wrote:
> On Wed, Oct 14, 2026 at 02:28:02PM -0700, Namhyung Kim wrote:
> > On Tue, Oct 13, 2026 at 04:56:48PM +0800, Changbin Du wrote:
> [..]
> > > +
> > > +static const struct option options[] = {
> > > +	OPT_UINTEGER('t', "threads", &threads,
> > > +		     "Number of contending threads (default: 2, or 1 on single CPU)"),
> > > +	OPT_UINTEGER('r', "runtime", &runtime,
> > 
> > Can you please pick a different short option than 'r'?  perf bench
> > itself has -r/--repeat option so it would be confusing.  It doesn't
> > clash for now, but I think it's better to use perf bench options from
> > 'perf bench atomic ...' later.
> > 
> 
> Agreed -- I'll drop the short options; --threads and --runtime
> stay long-only so no bench option (e.g. -r/--repeat) is shadowed
> at perf bench atomic .... Will send an updated patch.

Well.. but short options are easier to use.  I think you can use 'R' and
'T' instead.

Thanks,
Namhyung