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Re: [PATCH 09/11] x86, perf: Support sysfs files depending on SMT status

From Peter Zijlstra <peterz@infradead.org>
Newsgroups linux.kernel
Subject Re: [PATCH 09/11] x86, perf: Support sysfs files depending on SMT status
Date 2016-01-18 19:10 +0100
Message-ID <qSmpB-4nb-9@gated-at.bofh.it> (permalink)
References <qRnH3-5Ih-13@gated-at.bofh.it> <qRnH5-5Ih-59@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Fri, Jan 15, 2016 at 05:12:51PM -0800, Andi Kleen wrote:
> From: Andi Kleen <ak@linux.intel.com>
> 
> Add a way to show different sysfs events attributes depending on
> HyperThreading is on or off. This is difficult to determine
> early at boot, so we just do it dynamically when the sysfs
> attribute is read.
> 
> v2:
> Compute HT status only once in CPU online/offline hooks.


But we still have the 'duplicate' functionality in fixup_ht_bug() as
reported last time. Please merge these two, we should not have 2
different means of detecting SMT.

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Thread

Add top down metrics to perf stat Andi Kleen <andi@firstfloor.org> - 2016-01-16 02:20 +0100
  [PATCH 08/11] perf, tools, stat: Add extra output of counter values with -v Andi Kleen <andi@firstfloor.org> - 2016-01-16 02:20 +0100
  [PATCH 06/11] perf, tools, stat: Basic support for TopDown in perf stat Andi Kleen <andi@firstfloor.org> - 2016-01-16 02:20 +0100
  [PATCH 09/11] x86, perf: Support sysfs files depending on SMT status Andi Kleen <andi@firstfloor.org> - 2016-01-16 02:20 +0100
    Re: [PATCH 09/11] x86, perf: Support sysfs files depending on SMT  status Peter Zijlstra <peterz@infradead.org> - 2016-01-18 19:10 +0100
    Re: [PATCH 09/11] x86, perf: Support sysfs files depending on SMT  status Peter Zijlstra <peterz@infradead.org> - 2016-01-18 19:10 +0100
      Re: [PATCH 09/11] x86, perf: Support sysfs files depending on SMT  status Andi Kleen <andi@firstfloor.org> - 2016-01-18 23:30 +0100
  [PATCH 04/11] perf, tools, stat: Avoid fractional digits for integer scales Andi Kleen <andi@firstfloor.org> - 2016-01-16 02:20 +0100
  [PATCH 07/11] perf, tools, stat: Add computation of TopDown formulas Andi Kleen <andi@firstfloor.org> - 2016-01-16 02:20 +0100
  [PATCH 05/11] perf, tools, stat: Scale values by unit before metrics Andi Kleen <andi@firstfloor.org> - 2016-01-16 02:20 +0100

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