From: Ingo Molnar <mingo@elte.hu>
To: Stephane Eranian <eranian@google.com>
Cc: linux-kernel@vger.kernel.org, acme@redhat.com,
peterz@infradead.org, dsahern@gmail.com, ravitillo@lbl.gov,
khandual@linux.vnet.ibm.com, asharma@fb.com,
robert.richter@amd.com, ming.m.lin@intel.com,
vweaver1@eecs.utk.edu, andi@firstfloor.org,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [PATCH] perf report: auto-detect branch stack sampling mode
Date: Mon, 5 Mar 2012 16:47:53 +0100 [thread overview]
Message-ID: <20120305154753.GA14604@elte.hu> (raw)
In-Reply-To: <20120224094048.GA7952@quad>
Another usability bug of the new branch sampling feature is that
typing the obvious:
$ perf record -b ./myprog
does not do the obvious thing and default to 'any' but throws a
*very* unhelpful generic perf error:
usage: perf record [<options>] [<command>]
or: perf record [<options>] -- <command> [<options>]
...
Really, we should do better than this. Only people who *want* to
specify finer LBR filters should be forced to specify them.
Thanks,
Ingo
next prev parent reply other threads:[~2012-03-05 15:48 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-24 9:40 [PATCH] perf report: auto-detect branch stack sampling mode Stephane Eranian
2012-02-24 15:24 ` David Ahern
2012-02-24 15:28 ` Stephane Eranian
2012-02-24 15:31 ` David Ahern
2012-02-24 15:40 ` Stephane Eranian
2012-02-24 15:49 ` David Ahern
2012-02-24 15:51 ` Stephane Eranian
2012-03-02 17:47 ` Stephane Eranian
2012-03-02 19:08 ` Arnaldo Carvalho de Melo
2012-03-03 19:43 ` Arnaldo Carvalho de Melo
2012-03-05 10:49 ` Ingo Molnar
2012-03-05 11:11 ` Peter Zijlstra
2012-03-05 15:47 ` Ingo Molnar [this message]
2012-03-05 15:50 ` Ingo Molnar
2012-03-05 15:56 ` Ingo Molnar
2012-03-05 16:30 ` Peter Zijlstra
2012-03-05 16:32 ` Stephane Eranian
2012-03-05 17:20 ` Ingo Molnar
2012-03-05 20:35 ` Arnaldo Carvalho de Melo
2012-03-05 21:43 ` Arun Sharma
2012-03-05 22:26 ` Arnaldo Carvalho de Melo
2012-03-05 23:35 ` Arun Sharma
2012-03-06 3:06 ` Arnaldo Carvalho de Melo
2012-03-06 6:27 ` Ingo Molnar
2012-03-06 6:25 ` Ingo Molnar
2012-03-07 1:57 ` [RFC] perf report: Implement symbol filtering on TUI Namhyung Kim
2012-03-07 6:07 ` Ingo Molnar
2012-03-07 8:04 ` Namhyung Kim
2012-03-08 10:44 ` Ingo Molnar
2012-03-09 1:53 ` Namhyung Kim
2012-03-09 7:36 ` Ingo Molnar
2012-03-09 8:03 ` Namhyung Kim
2012-03-14 23:11 ` Arun Sharma
2012-03-15 0:44 ` Namhyung Kim
2012-03-15 21:46 ` Arun Sharma
2012-03-05 15:52 ` [PATCH] perf report: auto-detect branch stack sampling mode Stephane Eranian
2012-03-07 12:49 ` Stephane Eranian
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