From: Andi Kleen <andi@firstfloor.org>
To: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <andi@firstfloor.org>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Jiri Olsa <jolsa@kernel.org>, Ingo Molnar <mingo@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Namhyung Kim <namhyung@kernel.org>,
Andi Kleen <ak@linux.intel.com>
Subject: Re: [PATCH 05/10] perf, tools, stat: Basic support for TopDown in perf stat
Date: Thu, 17 Dec 2015 15:03:58 +0100 [thread overview]
Message-ID: <20151217140358.GB15533@two.firstfloor.org> (raw)
In-Reply-To: <CABPqkBQcsB_8HmD=oc3fhhv9C2OD0R8ZwxGu4HrOu_wR1tOM2Q@mail.gmail.com>
> >> This is x86 specific. Why not just try it out and in case of error
> >> suggest checking
> >> if pinned system-wide events exist (such as NMI watchdog on x86). that would
> >> be more generic.
> >
> > That's really complicated, i would have to tear down all state and then
> > resubmit all the events. I think just checking the NMI watchdog is good
> > enough. I couldn't give a sensible error message for the generic case
> > anyways.
> >
> What about that fancy error reporting extension that was proposed a few months
> back? It could help print a sensible error msg. Did it ever make it in?
AFAIK it's not in. Also even the extended error wouldn't know who
installed a pinned counter.
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
next prev parent reply other threads:[~2015-12-17 14:04 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-16 0:54 Add top down metrics to perf stat v2 Andi Kleen
2015-12-16 0:54 ` [PATCH 01/10] perf, tools: Dont stop PMU parsing on alias parse error Andi Kleen
2015-12-21 16:08 ` Jiri Olsa
2015-12-16 0:54 ` [PATCH 02/10] perf, tools, stat: Force --per-core mode for .agg-per-core aliases Andi Kleen
2015-12-16 14:16 ` Stephane Eranian
2015-12-21 16:14 ` Jiri Olsa
2015-12-21 16:16 ` Jiri Olsa
2015-12-16 0:54 ` [PATCH 03/10] perf, tools, stat: Avoid fractional digits for integer scales Andi Kleen
2015-12-16 14:22 ` Stephane Eranian
2015-12-16 0:54 ` [PATCH 04/10] perf, tools, stat: Scale values by unit before metrics Andi Kleen
2015-12-16 0:54 ` [PATCH 05/10] perf, tools, stat: Basic support for TopDown in perf stat Andi Kleen
2015-12-16 14:32 ` Stephane Eranian
2015-12-16 21:21 ` Andi Kleen
2015-12-17 9:26 ` Stephane Eranian
2015-12-17 14:03 ` Andi Kleen [this message]
2015-12-16 0:54 ` [PATCH 06/10] perf, tools, stat: Add computation of TopDown formulas Andi Kleen
2015-12-16 0:54 ` [PATCH 07/10] perf, tools, stat: Add extra output of counter values with -v Andi Kleen
2015-12-16 0:54 ` [PATCH 08/10] x86, perf: Support sysfs files depending on SMT status Andi Kleen
2015-12-16 8:53 ` Peter Zijlstra
2015-12-16 12:48 ` Stephane Eranian
2015-12-16 16:26 ` Andi Kleen
2015-12-16 0:54 ` [PATCH 09/10] x86, perf: Add Top Down events to Intel Core Andi Kleen
2015-12-16 0:54 ` [PATCH 10/10] x86, perf: Add Top Down events to Intel Atom Andi Kleen
2015-12-17 10:27 ` Add top down metrics to perf stat v2 Stephane Eranian
2015-12-17 14:01 ` Andi Kleen
2015-12-17 23:31 ` Stephane Eranian
2015-12-18 1:55 ` Andi Kleen
2015-12-18 9:31 ` Stephane Eranian
2015-12-18 21:38 ` Andi Kleen
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