* [PATCH] Documentation: admin-guide: pm: Add Out of Band mode
@ 2022-05-23 17:27 Srinivas Pandruvada
2022-05-23 17:46 ` Jonathan Corbet
0 siblings, 1 reply; 4+ messages in thread
From: Srinivas Pandruvada @ 2022-05-23 17:27 UTC (permalink / raw)
To: rafael, corbet, hdegoede, markgross
Cc: lenb, linux-kernel, linux-pm, linux-doc, platform-driver-x86,
prarit, Srinivas Pandruvada
Update documentation for using the tool to support performance level
change via OOB (Out of Band) interface.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
---
.../admin-guide/pm/intel-speed-select.rst | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/Documentation/admin-guide/pm/intel-speed-select.rst b/Documentation/admin-guide/pm/intel-speed-select.rst
index 0a1fbdb54bfe..4146a2da35ea 100644
--- a/Documentation/admin-guide/pm/intel-speed-select.rst
+++ b/Documentation/admin-guide/pm/intel-speed-select.rst
@@ -262,6 +262,25 @@ Which shows that the base frequency now increased from 2600 MHz at performance
level 0 to 2800 MHz at performance level 4. As a result, any workload, which can
use fewer CPUs, can see a boost of 200 MHz compared to performance level 0.
+Changing performance level via BMC Interface
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+It is possible to change SST-PP level using out of band (OOB) agent (Via some
+remote management console, through BMC "Baseboard Management Controller"
+interface). This mode is supported from the Sapphire Rapids processor
+generation. The kernel and tool change to support this mode is added to Linux
+kernel version 5.18. To enable this feature, kernel config
+"CONFIG_INTEL_HFI_THERMAL" is required. The minimum version of the tool
+is "v1.12" to support this feature, which is part of Linux kernel version 5.18.
+
+To support such configuration, this tool can be used as a daemon. Add
+a command line option --oob::
+
+# intel-speed-select --oob
+
+In this mode the tool will online/offline CPUs based on the new performance
+level.
+
Check presence of other Intel(R) SST features
---------------------------------------------
--
2.35.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] Documentation: admin-guide: pm: Add Out of Band mode
2022-05-23 17:27 [PATCH] Documentation: admin-guide: pm: Add Out of Band mode Srinivas Pandruvada
@ 2022-05-23 17:46 ` Jonathan Corbet
2022-05-23 18:00 ` srinivas pandruvada
0 siblings, 1 reply; 4+ messages in thread
From: Jonathan Corbet @ 2022-05-23 17:46 UTC (permalink / raw)
To: Srinivas Pandruvada, rafael, hdegoede, markgross
Cc: lenb, linux-kernel, linux-pm, linux-doc, platform-driver-x86,
prarit, Srinivas Pandruvada
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> writes:
> Update documentation for using the tool to support performance level
> change via OOB (Out of Band) interface.
>
> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
> ---
> .../admin-guide/pm/intel-speed-select.rst | 19 +++++++++++++++++++
> 1 file changed, 19 insertions(+)
>
> diff --git a/Documentation/admin-guide/pm/intel-speed-select.rst b/Documentation/admin-guide/pm/intel-speed-select.rst
> index 0a1fbdb54bfe..4146a2da35ea 100644
> --- a/Documentation/admin-guide/pm/intel-speed-select.rst
> +++ b/Documentation/admin-guide/pm/intel-speed-select.rst
> @@ -262,6 +262,25 @@ Which shows that the base frequency now increased from 2600 MHz at performance
> level 0 to 2800 MHz at performance level 4. As a result, any workload, which can
> use fewer CPUs, can see a boost of 200 MHz compared to performance level 0.
>
> +Changing performance level via BMC Interface
> +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> +
> +It is possible to change SST-PP level using out of band (OOB) agent (Via some
> +remote management console, through BMC "Baseboard Management Controller"
> +interface). This mode is supported from the Sapphire Rapids processor
> +generation. The kernel and tool change to support this mode is added to Linux
> +kernel version 5.18. To enable this feature, kernel config
> +"CONFIG_INTEL_HFI_THERMAL" is required. The minimum version of the tool
> +is "v1.12" to support this feature, which is part of Linux kernel version 5.18.
> +
> +To support such configuration, this tool can be used as a daemon. Add
> +a command line option --oob::
> +
> +# intel-speed-select --oob
> +
This suggests you haven't actually built the documentation with your
change and verified that you got the result you were after. Literal
blocks need to be indented.
Thanks,
jon
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] Documentation: admin-guide: pm: Add Out of Band mode
2022-05-23 17:46 ` Jonathan Corbet
@ 2022-05-23 18:00 ` srinivas pandruvada
2022-05-23 18:35 ` Jonathan Corbet
0 siblings, 1 reply; 4+ messages in thread
From: srinivas pandruvada @ 2022-05-23 18:00 UTC (permalink / raw)
To: Jonathan Corbet, rafael, hdegoede, markgross
Cc: lenb, linux-kernel, linux-pm, linux-doc, platform-driver-x86, prarit
On Mon, 2022-05-23 at 11:46 -0600, Jonathan Corbet wrote:
> Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> writes:
>
> > Update documentation for using the tool to support performance
> > level
> > change via OOB (Out of Band) interface.
> >
> > Signed-off-by: Srinivas Pandruvada
> > <srinivas.pandruvada@linux.intel.com>
> > ---
> > .../admin-guide/pm/intel-speed-select.rst | 19
> > +++++++++++++++++++
> > 1 file changed, 19 insertions(+)
> >
> > diff --git a/Documentation/admin-guide/pm/intel-speed-select.rst
> > b/Documentation/admin-guide/pm/intel-speed-select.rst
> > index 0a1fbdb54bfe..4146a2da35ea 100644
> > --- a/Documentation/admin-guide/pm/intel-speed-select.rst
> > +++ b/Documentation/admin-guide/pm/intel-speed-select.rst
> > @@ -262,6 +262,25 @@ Which shows that the base frequency now
> > increased from 2600 MHz at performance
> > level 0 to 2800 MHz at performance level 4. As a result, any
> > workload, which can
> > use fewer CPUs, can see a boost of 200 MHz compared to performance
> > level 0.
> >
> > +Changing performance level via BMC Interface
> > +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > +
> > +It is possible to change SST-PP level using out of band (OOB)
> > agent (Via some
> > +remote management console, through BMC "Baseboard Management
> > Controller"
> > +interface). This mode is supported from the Sapphire Rapids
> > processor
> > +generation. The kernel and tool change to support this mode is
> > added to Linux
> > +kernel version 5.18. To enable this feature, kernel config
> > +"CONFIG_INTEL_HFI_THERMAL" is required. The minimum version of the
> > tool
> > +is "v1.12" to support this feature, which is part of Linux kernel
> > version 5.18.
> > +
> > +To support such configuration, this tool can be used as a daemon.
> > Add
> > +a command line option --oob::
> > +
> > +# intel-speed-select --oob
> > +
>
> This suggests you haven't actually built the documentation with your
> change and verified that you got the result you were after.
You mean I should print the result with the command? Something like
this:
#intel-speed-select --oob
Intel(R) Speed Select Technology
OOB mode is enabled and will run as daemon
> Literal
> blocks need to be indented.
I will submit v2.
Thanks,
Srinivas
>
> Thanks,
>
> jon
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] Documentation: admin-guide: pm: Add Out of Band mode
2022-05-23 18:00 ` srinivas pandruvada
@ 2022-05-23 18:35 ` Jonathan Corbet
0 siblings, 0 replies; 4+ messages in thread
From: Jonathan Corbet @ 2022-05-23 18:35 UTC (permalink / raw)
To: srinivas pandruvada, rafael, hdegoede, markgross
Cc: lenb, linux-kernel, linux-pm, linux-doc, platform-driver-x86, prarit
srinivas pandruvada <srinivas.pandruvada@linux.intel.com> writes:
>> This suggests you haven't actually built the documentation with your
>> change and verified that you got the result you were after.
> You mean I should print the result with the command? Something like
> this:
> #intel-speed-select --oob
> Intel(R) Speed Select Technology
> OOB mode is enabled and will run as daemon
No, I meant building the docs and verifying that they looked right.
That said, adding the output seems fine...
Thanks,
jon
^ permalink raw reply [flat|nested] 4+ messages in thread
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2022-05-23 17:27 [PATCH] Documentation: admin-guide: pm: Add Out of Band mode Srinivas Pandruvada
2022-05-23 17:46 ` Jonathan Corbet
2022-05-23 18:00 ` srinivas pandruvada
2022-05-23 18:35 ` Jonathan Corbet
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