From: Andi Kleen <ak@linux.intel.com>
To: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>,
lkml <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@kernel.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Michael Petlan <mpetlan@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>
Subject: Re: [RFC] perf/x86/intel: Export mem events only if there's PEBs support
Date: Mon, 13 Aug 2018 11:58:05 -0700 [thread overview]
Message-ID: <20180813185805.GA10097@tassilo.jf.intel.com> (raw)
In-Reply-To: <20180813154820.16991-1-jolsa@kernel.org>
On Mon, Aug 13, 2018 at 05:48:20PM +0200, Jiri Olsa wrote:
> hi,
> we had some reports that we show mem* events on KVM servers
> where they are not available, this patch hides them if there's
> no PEBs available
>
> currently on those servers we fail to open mem* events,
> because we can't access LDLAT msr
>
> however that's not so easy/straight forward to check,
> so I thought we could use check on PEBs instead, which
> needs to be there for mem events as well and seems to
> be enough to check
>
> thoughts? thanks,
> jirka
Acked-by: Andi Kleen <ak@linux.intel.com>
-Andi
next prev parent reply other threads:[~2018-08-13 18:58 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-13 15:48 [RFC] perf/x86/intel: Export mem events only if there's PEBs support Jiri Olsa
2018-08-13 18:58 ` Andi Kleen [this message]
2018-08-27 9:06 ` [PATCH] " Jiri Olsa
2018-08-28 8:12 ` Peter Zijlstra
2018-08-28 8:19 ` Jiri Olsa
2018-09-06 13:57 ` Jiri Olsa
2018-09-23 16:26 ` Jiri Olsa
2018-10-16 16:03 ` [tip:perf/core] perf/x86/intel: Export mem events only if there's PEBS support tip-bot for Jiri Olsa
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