On Tue, Apr 30, 2019 at 5:33 AM Borislav Petkov wrote:
> So that die thing has only small relevance to some software, as you say:
>
> "These topology changes primarily impact parts of the kernel and some
> applciations that care about package MSR scope."
>
> So if there's no real need to add it
On Tue, Apr 30, 2019 at 02:50:58AM -0400, Len Brown wrote:
> If one were to make a change here, I'd consider adding the (physical) die_id,
> though it is already in sysfs topology as an attribute.
From: Documentation/x86/topology.txt
"The kernel does not care about the concept of physical
On Tue, Feb 26, 2019 at 2:05 PM Peter Zijlstra wrote:
>
> On Tue, Feb 26, 2019 at 01:19:58AM -0500, Len Brown wrote:
> > Documentation/cputopology.txt| 72 ++-
> > Documentation/x86/topology.txt | 6 +-
> > arch/x86/include/asm/processor.h
Le 12/04/2019 à 21:52, Len Brown a écrit :
I think I prefer 's/threads/cpus/g' on that. Threads makes me think SMT,
and I don't think there's any guarantee the part in question will have
SMT on.
>>> I think 'threads' is a bit confusing as well. We seem to be using 'cpu'
>>>
> > > I think I prefer 's/threads/cpus/g' on that. Threads makes me think SMT,
> > > and I don't think there's any guarantee the part in question will have
> > > SMT on.
> >
> > I think 'threads' is a bit confusing as well. We seem to be using 'cpu'
> > everywhere for something we can schedule
On Tue, Feb 26, 2019 at 1:51 PM Peter Zijlstra wrote:
>
> On Tue, Feb 26, 2019 at 01:19:58AM -0500, Len Brown wrote:
> > Restored sysfs core_siblings, core_siblings_list
> >
> > v1 proposed re-defining this existing attribute to
> > be the threads in a die, rather than in a package.
>
On Thu, 7 Mar 2019, Morten Rasmussen wrote:
> On Tue, Feb 26, 2019 at 07:53:58PM +0100, Peter Zijlstra wrote:
> > On Tue, Feb 26, 2019 at 01:19:58AM -0500, Len Brown wrote:
> > > Added sysfs core_threads, core_threads_list
> > >
> > > Added this attribute to show which threads siblings in a
On Tue, 26 Feb 2019, Len Brown wrote:
> This patch series does 4 things.
>
> 1. Parses the new CPUID.1F leaf to discover multi-die/package topology
>
> 2. Export multi-die topology inside the kernel
>
> 3. Update 3 places (coretemp, pkgtemp, rapl) that that need to know
>the difference
On Tue, Feb 26, 2019 at 07:53:58PM +0100, Peter Zijlstra wrote:
> On Tue, Feb 26, 2019 at 01:19:58AM -0500, Len Brown wrote:
> > Added sysfs package_threads, package_threads_list
> >
> > Added this attribute to show threads siblings in a package.
> > Exactly same as "core_siblings above",
On Tue, Feb 26, 2019 at 01:19:58AM -0500, Len Brown wrote:
> Documentation/cputopology.txt| 72 ++-
> Documentation/x86/topology.txt | 6 +-
> arch/x86/include/asm/processor.h | 5 +-
> arch/x86/include/asm/smp.h |
On Tue, Feb 26, 2019 at 01:19:58AM -0500, Len Brown wrote:
> Added sysfs package_threads, package_threads_list
>
> Added this attribute to show threads siblings in a package.
> Exactly same as "core_siblings above", a name now deprecated.
> This attribute name and definition is
On Tue, Feb 26, 2019 at 01:19:58AM -0500, Len Brown wrote:
> Restored sysfs core_siblings, core_siblings_list
>
> v1 proposed re-defining this existing attribute to
> be the threads in a die, rather than in a package.
>
> For compatibility, decided rather to keep this
>
This patch series does 4 things.
1. Parses the new CPUID.1F leaf to discover multi-die/package topology
2. Export multi-die topology inside the kernel
3. Update 3 places (coretemp, pkgtemp, rapl) that that need to know
the difference between die and package-scope MSR.
(Note: Kan Liang
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