[PATCH v12 6/6] docs: mm: numaperf.rst Add brief description for access class 1.
From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Date: 2020-09-30 14:11:16
Also in:
linux-acpi, linux-api, linux-mm, lkml
Subsystem:
documentation, memory management - misc, the rest · Maintainers:
Jonathan Corbet, Andrew Morton, David Hildenbrand, Linus Torvalds
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> --- 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..86f2a3c4b638 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 ==========
--
2.19.1
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