From: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
To: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>,
linux-kernel@vger.kernel.org, Ingo Molnar <mingo@kernel.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung.kim@lge.com>,
Stephane Eranian <eranian@google.com>
Subject: Re: [PATCH 2/3] perf stat: Don't require a workload when using system wide or CPU options
Date: Tue, 8 Oct 2013 09:39:28 -0300 [thread overview]
Message-ID: <20131008123928.GA4018@ghostprotocols.net> (raw)
In-Reply-To: <52497F3C.9070908@gmail.com>
Em Mon, Sep 30, 2013 at 07:40:12AM -0600, David Ahern escreveu:
> On 9/30/13 2:47 AM, Namhyung Kim wrote:
> >>@@ -1517,8 +1517,10 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
> >> } else if (big_num_opt == 0) /* User passed --no-big-num */
> >> big_num = false;
> >>
> >>- if (!argc && !perf_target__has_task(&target))
> >>+ if (!argc && !perf_target__has_task(&target) &&
> >>+ !perf_target__has_cpu(&target))
> >
> >You can use perf_target__none() for this.
>
> Indeed. Updated patch attached.
Cool patch, applying to acme/perf/core.
While trying it noticed this, that should also be fixed
eventually:
[root@zoo ~]# perf stat -c C 0
C: No such file or directory
Performance counter stats for 'C 0':
<not counted> task-clock
<not counted> context-switches
<not counted> cpu-migrations
<SNIP>
- Arnaldo
next prev parent reply other threads:[~2013-10-08 12:39 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-28 20:27 [PATCH 0/3] perf stat cleanups David Ahern
2013-09-28 20:27 ` [PATCH 1/3] perf stat: Fix misleading message when specifying cpu list or system wide David Ahern
2013-10-15 5:29 ` [tip:perf/core] " tip-bot for David Ahern
2013-09-28 20:27 ` [PATCH 2/3] perf stat: Don't require a workload when using system wide or CPU options David Ahern
2013-09-30 8:47 ` Namhyung Kim
2013-09-30 13:40 ` David Ahern
2013-10-08 12:39 ` Arnaldo Carvalho de Melo [this message]
2013-10-08 12:51 ` Ingo Molnar
2013-10-08 13:27 ` Arnaldo Carvalho de Melo
2013-10-08 19:24 ` Ingo Molnar
2013-10-08 13:25 ` David Ahern
2013-10-08 13:33 ` Arnaldo Carvalho de Melo
2013-10-08 13:42 ` David Ahern
2013-10-15 5:30 ` [tip:perf/core] perf stat: Don' t " tip-bot for David Ahern
2013-09-28 20:28 ` [PATCH 3/3] perf stat: Add units to nanosec-based counters David Ahern
2013-10-15 5:30 ` [tip:perf/core] " tip-bot for David Ahern
2013-10-08 1:44 ` [PATCH 0/3] perf stat cleanups David Ahern
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