diff mbox series

[v11,6/6] docs: mm: numaperf.rst Add brief description for access class 1.

Message ID 20200928125235.446188-7-Jonathan.Cameron@huawei.com (mailing list archive)
State New, archived
Headers show
Series ACPI: Support Generic Initiator proximity domains | expand

Commit Message

Jonathan Cameron Sept. 28, 2020, 12:52 p.m. UTC
Try to make minimal changes to the document which already describes
access class 0 in a generic fashion (including IO initiatiors that
are not CPUs).

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 v11: No change.

 Documentation/admin-guide/mm/numaperf.rst | 8 ++++++++
 1 file changed, 8 insertions(+)

Comments

Randy Dunlap Sept. 28, 2020, 7:26 p.m. UTC | #1
Hi--

On 9/28/20 5:52 AM, Jonathan Cameron wrote:
> Try to make minimal changes to the document which already describes
> access class 0 in a generic fashion (including IO initiatiors that
> are not CPUs).
> 
> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> ---
>  v11: No change.
> 
>  Documentation/admin-guide/mm/numaperf.rst | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/Documentation/admin-guide/mm/numaperf.rst b/Documentation/admin-guide/mm/numaperf.rst
> index 4d69ef1de830..b89bb85eac75 100644
> --- a/Documentation/admin-guide/mm/numaperf.rst
> +++ b/Documentation/admin-guide/mm/numaperf.rst

> @@ -88,6 +93,9 @@ The latency attributes are provided in nanoseconds.
>  The values reported here correspond to the rated latency and bandwidth
>  for the platform.
>  
> +Access class 1, takes the same form, but only includes values for CPU to
> +memory activity.

-ETOOMANYCOMMAS.

Drop the first comma for sure. Maybe even the second one.

> +
>  ==========
>  NUMA Cache
>  ==========
> 

thanks.
diff mbox series

Patch

diff --git a/Documentation/admin-guide/mm/numaperf.rst b/Documentation/admin-guide/mm/numaperf.rst
index 4d69ef1de830..b89bb85eac75 100644
--- a/Documentation/admin-guide/mm/numaperf.rst
+++ b/Documentation/admin-guide/mm/numaperf.rst
@@ -56,6 +56,11 @@  nodes' access characteristics share the same performance relative to other
 linked initiator nodes. Each target within an initiator's access class,
 though, do not necessarily perform the same as each other.
 
+The access class "1" is used to allow differentiation between initiators
+that are CPUs and hence suitable for generic task scheduling, and
+IO initiators such as GPUs and NICs.  Unlike access class 0, only
+nodes containing CPUs are considered.
+
 ================
 NUMA Performance
 ================
@@ -88,6 +93,9 @@  The latency attributes are provided in nanoseconds.
 The values reported here correspond to the rated latency and bandwidth
 for the platform.
 
+Access class 1, takes the same form, but only includes values for CPU to
+memory activity.
+
 ==========
 NUMA Cache
 ==========