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From: Peter Zijlstra <peterz@infradead.org>
To: Len Brown <lenb@kernel.org>
Cc: x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/19] v6 multi-die/package topology support
Date: Wed, 15 May 2019 10:55:51 +0200	[thread overview]
Message-ID: <20190515085551.GB2623@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20190513175903.8735-1-lenb@kernel.org>

On Mon, May 13, 2019 at 01:58:44PM -0400, Len Brown wrote:
> 
> This patch series does 4 things.
> 
> 1. Parse the new CPUID.1F leaf to discover multi-die/package topology
> 
> 2. Export multi-die topology inside the kernel
> 
> 3. Update 4 places (coretemp, pkgtemp, rapl, perf) that that need to know
>    the difference between die and package-scope MSR.
> 
> 4. Export multi-die topology to user-space via sysfs
> 
> These changes should have no impact on cache topology,
> NUMA topology, Linux scheduler, or system performance.
> 
> These topology changes primarily impact parts of the kernel
> and some applications that care about package MSR scope.
> Also, some software is licensed per package, and other tools,
> such as benchmark reporting software sometimes cares about packages.

I still think having a 'rapl package' be a 'die' is weird, but if that's
the way it is specified in the SDM then so be it.

Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>

  reply	other threads:[~2019-05-15  8:55 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-13 17:58 Len Brown
2019-05-15  8:55 ` Peter Zijlstra [this message]
2019-05-15 16:38   ` Ingo Molnar
2019-05-22 20:44 ` Ingo Molnar
2019-05-13 17:58 [PATCH 01/19] x86 topology: Add CPUID.1F multi-die/package support Len Brown
2019-05-13 17:58 ` [PATCH 03/19] cpu topology: Export die_id Len Brown
2019-05-23  9:24   ` [tip:x86/topology] cpu/topology: " tip-bot for Len Brown
2019-05-13 17:58 ` [PATCH 04/19] x86 topology: Define topology_die_id() Len Brown
2019-05-23  9:24   ` [tip:x86/topology] x86/topology: " tip-bot for Len Brown
2019-05-13 17:58 ` [PATCH 05/19] x86 topology: Define topology_logical_die_id() Len Brown
2019-05-23  9:25   ` [tip:x86/topology] x86/topology: " tip-bot for Len Brown
2019-05-13 17:58 ` [PATCH 06/19] powercap/intel_rapl: Simplify rapl_find_package() Len Brown
2019-05-23  9:26   ` [tip:x86/topology] " tip-bot for Zhang Rui
2019-05-13 17:58 ` [PATCH 07/19] powercap/intel_rapl: Support multi-die/package Len Brown
2019-05-23  9:26   ` [tip:x86/topology] " tip-bot for Zhang Rui
2019-05-13 17:58 ` [PATCH 08/19] thermal/x86_pkg_temp_thermal: " Len Brown
2019-05-23  9:27   ` [tip:x86/topology] " tip-bot for Zhang Rui
2019-05-13 17:58 ` [PATCH 09/19] powercap/intel_rapl: Update RAPL domain name and debug messages Len Brown
2019-05-23  9:28   ` [tip:x86/topology] " tip-bot for Zhang Rui
2019-05-13 17:58 ` [PATCH 10/19] hwmon/coretemp: Support multi-die/package Len Brown
2019-05-23  9:29   ` [tip:x86/topology] " tip-bot for Zhang Rui
2019-05-13 17:58 ` [PATCH 11/19] topology: Create package_cpus sysfs attribute Len Brown
2019-05-23  9:29   ` [tip:x86/topology] " tip-bot for Len Brown
2019-05-13 17:58 ` [PATCH 12/19] topology: Create core_cpus and die_cpus sysfs attributes Len Brown
2019-05-23  9:30   ` [tip:x86/topology] " tip-bot for Len Brown
2019-05-13 17:58 ` [PATCH 13/19] perf/x86/intel/uncore: Support multi-die/package Len Brown
2019-05-23  9:31   ` [tip:x86/topology] " tip-bot for Kan Liang
2019-05-13 17:58 ` [PATCH 14/19] perf/x86/intel/rapl: " Len Brown
2019-05-23  9:31   ` [tip:x86/topology] " tip-bot for Kan Liang
2019-05-13 17:58 ` [PATCH 15/19] perf/x86/intel/cstate: " Len Brown
2019-05-23  9:32   ` [tip:x86/topology] " tip-bot for Kan Liang
2019-05-13 17:59 ` [PATCH 16/19] thermal/x86_pkg_temp_thermal: Cosmetic: Rename internal variables to zones from packages Len Brown
2019-05-23  9:33   ` [tip:x86/topology] " tip-bot for Len Brown
2019-05-13 17:59 ` [PATCH 17/19] hwmon/coretemp: " Len Brown
2019-05-23  9:34   ` [tip:x86/topology] " tip-bot for Len Brown
2019-05-13 17:59 ` [PATCH 18/19] perf/x86/intel/uncore: Cosmetic renames in response to multi-die/pkg support Len Brown
2019-05-23  9:34   ` [tip:x86/topology] " tip-bot for Kan Liang
2019-05-13 17:59 ` [PATCH 19/19] perf/x86/intel/rapl: Cosmetic rename internal variables " Len Brown
2019-05-23  9:35   ` [tip:x86/topology] " tip-bot for Kan Liang

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