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From: Peter Zijlstra <peterz@infradead.org>
To: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>,
	Ingo Molnar <mingo@redhat.com>,
	linux-kernel@vger.kernel.org, jolsa@redhat.com,
	adrian.hunter@intel.com
Subject: Re: [PATCH 2/2] perf/x86/intel: Support PEBS output to PT
Date: Wed, 8 May 2019 11:18:05 +0200	[thread overview]
Message-ID: <20190508091805.GC2606@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20190502105022.15534-3-alexander.shishkin@linux.intel.com>

On Thu, May 02, 2019 at 01:50:22PM +0300, Alexander Shishkin wrote:
> The output setting is per-CPU, so all PEBS events must be either writing
> to PT or to the DS area, so in order to not mess up the event scheduling,
> we fall back to the latter in case both types of events are scheduled in.

Urgh, that blows... I really don't like that.

  parent reply	other threads:[~2019-05-08  9:18 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-02 10:50 [PATCH 0/2] perf, intel: Add support for PEBS output to Intel PT Alexander Shishkin
2019-05-02 10:50 ` [PATCH 1/2] perf: Allow normal events to be sources of AUX data Alexander Shishkin
2019-05-02 10:50 ` [PATCH 2/2] perf/x86/intel: Support PEBS output to PT Alexander Shishkin
2019-05-08  9:12   ` Peter Zijlstra
2019-05-08  9:18   ` Peter Zijlstra [this message]
2019-05-08  9:34   ` Peter Zijlstra
2019-05-03  8:57 ` [PATCH 0/2] perf, intel: Add support for PEBS output to Intel PT Alexander Shishkin
2019-05-08 10:39 ` Peter Zijlstra

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