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authorLinus Torvalds <torvalds@linux-foundation.org>2020-10-14 21:42:04 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-10-14 21:42:04 +0300
commitcf1d2b44f6c701ffff58606b5b8a8996190d6e7d (patch)
treea1306bfa0cb2e58f21954ab1ef9b6c8da558f59e /Documentation/admin-guide/mm
parent0b8417c14181595997091145342954332fa016cd (diff)
parent8be2362d10e8b0ea9844706d8c388480d37226d2 (diff)
downloadlinux-cf1d2b44f6c701ffff58606b5b8a8996190d6e7d.tar.xz
Merge tag 'acpi-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki: "These add support for generic initiator-only proximity domains to the ACPI NUMA code and the architectures using it, clean up some non-ACPICA code referring to debug facilities from ACPICA, reduce the overhead related to accessing GPE registers, add a new DPTF (Dynamic Power and Thermal Framework) participant driver, update the ACPICA code in the kernel to upstream revision 20200925, add a new ACPI backlight whitelist entry, fix a few assorted issues and clean up some code. Specifics: - Add support for generic initiator-only proximity domains to the ACPI NUMA code and the architectures using it (Jonathan Cameron) - Clean up some non-ACPICA code referring to debug facilities from ACPICA that are not actually used in there (Hanjun Guo) - Add new DPTF driver for the PCH FIVR participant (Srinivas Pandruvada) - Reduce overhead related to accessing GPE registers in ACPICA and the OS interface layer and make it possible to access GPE registers using logical addresses if they are memory-mapped (Rafael Wysocki) - Update the ACPICA code in the kernel to upstream revision 20200925 including changes as follows: + Add predefined names from the SMBus sepcification (Bob Moore) + Update acpi_help UUID list (Bob Moore) + Return exceptions for string-to-integer conversions in iASL (Bob Moore) + Add a new "ALL <NameSeg>" debugger command (Bob Moore) + Add support for 64 bit risc-v compilation (Colin Ian King) + Do assorted cleanups (Bob Moore, Colin Ian King, Randy Dunlap) - Add new ACPI backlight whitelist entry for HP 635 Notebook (Alex Hung) - Move TPS68470 OpRegion driver to drivers/acpi/pmic/ and split out Kconfig and Makefile specific for ACPI PMIC (Andy Shevchenko) - Clean up the ACPI SoC driver for AMD SoCs (Hanjun Guo) - Add missing config_item_put() to fix refcount leak (Hanjun Guo) - Drop lefrover field from struct acpi_memory_device (Hanjun Guo) - Make the ACPI extlog driver check for RDMSR failures (Ben Hutchings) - Fix handling of lid state changes in the ACPI button driver when input device is closed (Dmitry Torokhov) - Fix several assorted build issues (Barnabás Pőcze, John Garry, Nathan Chancellor, Tian Tao) - Drop unused inline functions and reduce code duplication by using kobj_to_dev() in the NFIT parsing code (YueHaibing, Wang Qing) - Serialize tools/power/acpi Makefile (Thomas Renninger)" * tag 'acpi-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (64 commits) ACPICA: Update version to 20200925 Version 20200925 ACPICA: Remove unnecessary semicolon ACPICA: Debugger: Add a new command: "ALL <NameSeg>" ACPICA: iASL: Return exceptions for string-to-integer conversions ACPICA: acpi_help: Update UUID list ACPICA: Add predefined names found in the SMBus sepcification ACPICA: Tree-wide: fix various typos and spelling mistakes ACPICA: Drop the repeated word "an" in a comment ACPICA: Add support for 64 bit risc-v compilation ACPI: button: fix handling lid state changes when input device closed tools/power/acpi: Serialize Makefile ACPI: scan: Replace ACPI_DEBUG_PRINT() with pr_debug() ACPI: memhotplug: Remove 'state' from struct acpi_memory_device ACPI / extlog: Check for RDMSR failure ACPI: Make acpi_evaluate_dsm() prototype consistent docs: mm: numaperf.rst Add brief description for access class 1. node: Add access1 class to represent CPU to memory characteristics ACPI: HMAT: Fix handling of changes from ACPI 6.2 to ACPI 6.3 ACPI: Let ACPI know we support Generic Initiator Affinity Structures x86: Support Generic Initiator only proximity domains ...
Diffstat (limited to 'Documentation/admin-guide/mm')
-rw-r--r--Documentation/admin-guide/mm/numaperf.rst8
1 files changed, 8 insertions, 0 deletions
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
==========