linux-kernel - Re: [BUG] Core2 cpu triggers hard lockup with perf test

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Message-ID: <20160227154614.GL5083@two.firstfloor.org>
Date:	Sat, 27 Feb 2016 16:46:14 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Andi Kleen <andi@...stfloor.org>,
	Stephane Eranian <eranian@...gle.com>,
	Wang Nan <wangnan0@...wei.com>, zheng.z.yan@...el.com,
	Kan Liang <kan.liang@...el.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [BUG] Core2 cpu triggers hard lockup with perf test

> I can't find what's special about Core2 CPU PEBS setup,
> it seems that oher CPUs are ok (tried on ivb/snb/hsw).
> 
> reverting the 156174999dd1 fixed the issue for me

Ok multi-record PEbS was never tested on Core 2. I suppose we 
can enable it only on Nehalem+

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.