From: Peter Zijlstra <peterz@infradead.org>
To: Stephane Eranian <eranian@google.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
"mingo@elte.hu" <mingo@elte.hu>,
"ak@linux.intel.com" <ak@linux.intel.com>,
Joe Mario <jmario@redhat.com>, Don Zickus <dzickus@redhat.com>,
Jiri Olsa <jolsa@redhat.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: Re: [PATCH 2/2] perf/x86: fix constraints for load latency and precise events
Date: Mon, 23 Jun 2014 13:39:53 +0200 [thread overview]
Message-ID: <20140623113953.GE13930@laptop.programming.kicks-ass.net> (raw)
In-Reply-To: <CABPqkBTXvBwwQ1vWkfQRtq7=GxS_KyE94wSOxPaBCffeJ7yc+A@mail.gmail.com>
On Mon, Jun 23, 2014 at 11:00:18AM +0200, Stephane Eranian wrote:
> You can say the same with PREC_DIST which up until HSW needs to be
> taken alone, i.e., no other event active. We don't enforce that either, it would
> cause problems with the NMI watchdog.
Yeah, the SDM states no other PEBS event, so the NMI watchdog would be
fine, but we do indeed not have any means of excluding other PEBS
events, only all other events.
next prev parent reply other threads:[~2014-06-23 11:39 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-19 15:58 [PATCH 0/2] perf/x86: improve Intel load latency and precise store event constraints Stephane Eranian
2014-06-19 15:58 ` [PATCH 1/2] perf/x86: update Haswell PEBS " Stephane Eranian
2014-06-19 18:00 ` Andi Kleen
2014-06-19 19:53 ` Stephane Eranian
2014-06-19 20:18 ` Andi Kleen
2014-06-19 20:31 ` Stephane Eranian
2014-06-19 20:40 ` Andi Kleen
2014-06-19 20:45 ` Stephane Eranian
2014-06-20 13:44 ` Stephane Eranian
2014-06-23 7:35 ` Peter Zijlstra
2014-06-23 14:16 ` Andi Kleen
2014-06-23 7:14 ` Peter Zijlstra
2014-06-23 8:06 ` Stephane Eranian
2014-06-23 11:37 ` Peter Zijlstra
2014-06-23 11:51 ` Stephane Eranian
2014-06-23 15:47 ` Andi Kleen
2014-06-23 7:12 ` Peter Zijlstra
2014-06-19 15:58 ` [PATCH 2/2] perf/x86: fix constraints for load latency and precise events Stephane Eranian
2014-06-19 20:56 ` Andi Kleen
2014-06-23 8:42 ` Peter Zijlstra
2014-06-23 9:00 ` Stephane Eranian
2014-06-23 11:39 ` Peter Zijlstra [this message]
2014-06-23 14:22 ` Andi Kleen
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