From: David Ahern <dsahern@gmail.com>
To: Ingo Molnar <mingo@kernel.org>
Cc: acme@ghostprotocols.net, linux-kernel@vger.kernel.org,
peterz@infradead.org, Robert Richter <robert.richter@amd.com>
Subject: Re: [PATCH 3/3 v2] perf tool: give user better message if precise is not supported
Date: Fri, 14 Sep 2012 05:13:21 -0600 [thread overview]
Message-ID: <50531151.9020202@gmail.com> (raw)
In-Reply-To: <20120914054344.GB9043@gmail.com>
On 9/13/12 11:43 PM, Ingo Molnar wrote:
>> v2: softened message to 'may not be' supported per Robert's suggestion
>
> Well, either it's supported on this machine or it's not - why
> does the text have to be so unsure about it?
Because EOPNOTSUPP is returned for more than just precise mode. We
cannot say with certainty that the precise attribute caused that errno.
David
next prev parent reply other threads:[~2012-09-14 11:14 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-13 20:59 [PATCH 0/3 v3] perf: precise mode and exclude_guest David Ahern
2012-09-13 20:59 ` [PATCH 1/3] perf tool: precise mode requires exclude_guest David Ahern
2012-10-20 0:55 ` [tip:perf/urgent] perf tool: Precise " tip-bot for David Ahern
2012-09-13 20:59 ` [PATCH 2/3] perf: require exclude_guest to use PEBS - kernel side enforcement David Ahern
2012-10-20 0:56 ` [tip:perf/urgent] perf: Require " tip-bot for Peter Zijlstra
2012-09-13 20:59 ` [PATCH 3/3 v2] perf tool: give user better message if precise is not supported David Ahern
2012-09-14 5:43 ` Ingo Molnar
2012-09-14 11:13 ` David Ahern [this message]
2012-09-14 11:36 ` Ingo Molnar
2012-09-14 11:43 ` David Ahern
2012-09-14 18:00 ` Arnaldo Carvalho de Melo
2012-09-14 18:07 ` Peter Zijlstra
2012-09-14 20:05 ` Ingo Molnar
2012-09-14 20:11 ` Ingo Molnar
2012-09-14 21:26 ` Peter Zijlstra
2012-09-17 7:11 ` Ingo Molnar
2012-10-25 8:01 ` [tip:perf/core] perf tools: Give " tip-bot for David Ahern
2012-09-26 1:24 ` [PATCH 0/3 v3] perf: precise mode and exclude_guest David Ahern
2012-10-09 15:08 ` David Ahern
-- strict thread matches above, loose matches on Subject: below --
2012-09-12 15:16 [PATCH 0/3 v2] " David Ahern
2012-09-12 15:16 ` [PATCH 3/3 v2] perf tool: give user better message if precise is not supported David Ahern
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