> I hope this is applicable for v2.
Yes, Srinivas is doing the right thing.
thanks,
-Len
> > Acked-by: Len Brown
Acked-by: Len Brown
On Sat, Jun 29, 2019 at 10:31 AM Andy Shevchenko
wrote:
>
> On Thu, Jun 27, 2019 at 1:39 AM Srinivas Pandruvada
> wrote:
> >
> > The Intel(R) Speed select technologies contains four features.
> >
> > Performance profile:An non architectur
From: Len Brown
Export die_id in cpu topology, for the benefit of hardware that
has multiple-die/package.
Signed-off-by: Len Brown
Cc: linux-doc@vger.kernel.org
---
Documentation/cputopology.txt | 15 ---
drivers/base/topology.c | 4
include/linux/topology.h | 3
From: Len Brown
Some new systems have multiple software-visible die within each package.
Update Linux parsing of the Intel CPUID "Extended Topology Leaf"
to handle either CPUID.B, or the new CPUID.1F.
Add cpuinfo_x86.die_id and cpuinfo_x86.max_dies to store the result.
die_id will b
ottom line is that it allows software to discover topology
levels that previously needed to be discovered by looking up family/model,
in the past, which was sort of annoying. The things that care are
things that care about MSR scope. Thankfully, the list of things that care
about MSR scope is quite finite.
thanks,
-Len
--
Len Brown, Intel Open Source Technology Center
On Tue, Feb 26, 2019 at 2:46 PM Dave Hansen wrote:
>
> On 2/25/19 10:20 PM, Len Brown wrote:
> > -/* leaf 0xb sub-leaf types */
> > +/* extended topology sub-leaf types */
> > #define INVALID_TYPE 0
> > #define SMT_TYPE 1
> > #define CORE_TYPE2
>
From: Len Brown
Some new systems have multiple software-visible die within each package.
Update Linux parsing of the Intel CPUID "Extended Topology Leaf"
to handle either CPUID.B, or the new CPUID.1F.
Add cpuinfo_x86.die_id and cpuinfo_x86.max_dies to store the result.
die_id will b
From: Len Brown
Export die_id in cpu topology, for the benefit of hardware that
has multiple-die/package.
Signed-off-by: Len Brown
Cc: linux-doc@vger.kernel.org
---
Documentation/cputopology.txt | 6 ++
arch/x86/include/asm/topology.h | 1 +
drivers/base/topology.c | 4
From: Len Brown
Syntax only, no functional or semantic change.
Signed-off-by: Len Brown
Cc: linux-doc@vger.kernel.org
---
Documentation/cputopology.txt | 46 +--
1 file changed, 23 insertions(+), 23 deletions(-)
diff --git a/Documentation/cputopology.txt b
From: Len Brown
Syntax only, no functional or semantic change.
reflect actual cpuinfo_x86 field name:
s/logical_id/logical_proc_id/
Signed-off-by: Len Brown
Cc: linux-doc@vger.kernel.org
---
Documentation/x86/topology.txt | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a
e future proof if/when we add any new levels.
the legacy thread_siblings and core_siblings will stick around as aliases:
core_threads (thread_siblings)
die_threads
package_threads (core_siblings)
thanks!
Len Brown, Intel Open Source Technology Center
re exotic MSR situations in future products --
the first ones are pretty simple --
something called a package-scope-MSR in the SDM today becomes a
die-scope-MSR in this generation
on a multi-die/package system.
It also reflects how many packages appear in sysfs, and this can
effect licensing of some kinds of software.
thanks,
Len Brown, Intel Open Source Technology Center
visible modules and tiles, and they choose to use this mechanism,
we can add support for them. But I do not advocate adding code to the kernel
"just in case".
In contrast, the need to support multi-die/package products as soon as
possible is quite clear.
thanks,
Len Brown, Intel Open Source Technology Center
like core_siblings, except it shows which die are in the same package.
This is needed for lscpu(1) to correctly display die topology.
Signed-off-by: Len Brown
Cc: linux-doc@vger.kernel.org
Signed-off-by: Len Brown
---
Documentation/cputopology.txt | 10 ++
arch/x86/include/asm/smp.h
ID.1F case,
the package id's reflect reality, and die_id's become meaningful.
Subsequent patches in this series update the kernel to be multi-die aware.
In particular, some software needs to know the difference between
a die-scope MSR and a package-scope MSR.
Signed-off-by: Len
No semantic changes.
Signed-off-by: Len Brown
Cc: linux-doc@vger.kernel.org
Signed-off-by: Len Brown
---
Documentation/cputopology.txt | 34 +-
1 file changed, 17 insertions(+), 17 deletions(-)
diff --git a/Documentation/cputopology.txt b/Documentation
reflect actual cpuinfo_x86 field name:
s/logical_id/logical_proc_id/
Signed-off-by: Len Brown
Cc: linux-doc@vger.kernel.org
Signed-off-by: Len Brown
---
Documentation/x86/topology.txt | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/Documentation/x86/topology.txt b
to know
the actual scope of "package-scope" MSRs.
Signed-off-by: Len Brown
Cc: linux-doc@vger.kernel.org
Signed-off-by: Len Brown
---
Documentation/cputopology.txt | 10 --
arch/x86/include/asm/topology.h | 1 +
drivers/base/topology.c | 4
include/linux/
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