linux-kernel - Re: [PATCH] perf/x86/intel: Fix SLOTS pebs event constraint

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Date:   Thu, 25 Jul 2019 09:54:50 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     kan.liang@...ux.intel.com
Cc:     mingo@...nel.org, linux-kernel@...r.kernel.org, ak@...ux.intel.com,
        stable@...r.kernel.org
Subject: Re: [PATCH] perf/x86/intel: Fix SLOTS pebs event constraint

On Tue, Jul 23, 2019 at 01:04:29PM -0700, kan.liang@...ux.intel.com wrote:
> From: Kan Liang <kan.liang@...ux.intel.com>
> 
> Sampling SLOTS event and ref-cycles event in a group on Icelake gives
> EINVAL.
> 
> SLOTS event is the event stands for the fixed counter 3, not fixed
> counter 2. Wrong mask was set to SLOTS event in
> intel_icl_pebs_event_constraints[].
> 
> Fixes: 6017608936c1 ("perf/x86/intel: Add Icelake support")
> Reported-by: Andi Kleen <ak@...ux.intel.com>
> Signed-off-by: Kan Liang <kan.liang@...ux.intel.com>

Thanks!