From: Peter Zijlstra <peterz@infradead.org>
To: Andi Kleen <andi@firstfloor.org>
Cc: linux-kernel@vger.kernel.org, mingo@kernel.org,
eranian@google.com, Andi Kleen <ak@linux.intel.com>
Subject: Re: [PATCH 4/5] perf, x86: Add INST_RETIRED.ALL workarounds
Date: Mon, 1 Sep 2014 15:41:12 +0200 [thread overview]
Message-ID: <20140901134112.GL27892@worktop.ger.corp.intel.com> (raw)
In-Reply-To: <1409006611-30741-5-git-send-email-andi@firstfloor.org>
On Mon, Aug 25, 2014 at 03:43:30PM -0700, Andi Kleen wrote:
> From: Andi Kleen <ak@linux.intel.com>
>
> On Broadwell INST_RETIRED.ALL cannot be used with any period
> that doesn't have the lowest 6 bits cleared. And the period
> should not be smaller than 128.
>
> Add a new callback to enforce this, and set it for Broadwell.
>
> This is erratum BDM57 and BDM11.
This changelog could do with more words on the solution, esp. such that
you answer Stephanes question.
next prev parent reply other threads:[~2014-09-01 13:41 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-25 22:43 Broadwell perf support Andi Kleen
2014-08-25 22:43 ` [PATCH 1/5] perf, x86: Remove incorrect model number from Haswell perf Andi Kleen
2014-08-26 21:27 ` Thomas Gleixner
2014-08-26 21:29 ` Andi Kleen
2014-08-26 22:29 ` Thomas Gleixner
2014-08-27 9:53 ` Thomas Gleixner
2014-08-27 16:37 ` Andi Kleen
2014-08-27 18:50 ` Thomas Gleixner
2014-08-25 22:43 ` [PATCH 2/5] perf, x86: Document all Haswell models Andi Kleen
2014-09-01 13:50 ` Peter Zijlstra
2014-08-25 22:43 ` [PATCH 3/5] perf, x86: Add Broadwell core support Andi Kleen
2014-09-01 13:51 ` Peter Zijlstra
2014-11-04 13:14 ` Stephane Eranian
2014-11-04 13:20 ` Peter Zijlstra
2014-08-25 22:43 ` [PATCH 4/5] perf, x86: Add INST_RETIRED.ALL workarounds Andi Kleen
2014-09-01 13:41 ` Peter Zijlstra [this message]
2014-08-25 22:43 ` [PATCH 5/5] perf, x86: Use Broadwell cache event list for Haswell Andi Kleen
2014-09-01 13:52 ` Peter Zijlstra
-- strict thread matches above, loose matches on Subject: below --
2014-09-02 18:44 [PATCH 1/5] perf, x86: Remove incorrect model number from Haswell perf Andi Kleen
2014-09-02 18:44 ` [PATCH 4/5] perf, x86: Add INST_RETIRED.ALL workarounds Andi Kleen
2014-08-27 21:03 perf, x86: Updated Broadwell patchkit Andi Kleen
2014-08-27 21:03 ` [PATCH 4/5] perf, x86: Add INST_RETIRED.ALL workarounds Andi Kleen
2014-08-14 1:17 Updated Broadwell perf patchkit Andi Kleen
2014-08-14 1:17 ` [PATCH 4/5] perf, x86: Add INST_RETIRED.ALL workarounds Andi Kleen
2014-08-14 4:46 ` Stephane Eranian
2014-08-14 14:30 ` Andi Kleen
2014-08-14 17:47 ` Stephane Eranian
2014-08-14 18:41 ` Andi Kleen
2014-08-15 14:31 ` Peter Zijlstra
2014-08-15 17:21 ` Andi Kleen
2014-08-14 7:10 ` Peter Zijlstra
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