Messages in this thread | | | From | Fenghua Yu <> | Subject | [PATCH v2 0/2] x86/resctrl: Enable user to view thread or core throttling mode | Date | Fri, 21 Aug 2020 11:25:15 -0700 |
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This series enumerates Memory Bandwidth Allocation (MBA) per-thread feature and introduces a new resctrl file "thread_throttle_mode". The file shows either "per-thread" on newer systems that implement the MBA per-thread feature or "max" on other systems that allocate maximum throttling per-core.
Details about the feature can be found in the commit description and in Chapter 9 of the most recent Intel ISE available from https://software.intel.com/sites/default/files/managed/c5/15/architecture-instruction-set-extensions-programming-reference.pdf
This series replaces the original MBA thread throttling patch series found at https://lore.kernel.org/lkml/cover.1592841671.git.reinette.chatre@intel.com/
This is a simplified version of the previous series that skips the min/max mode and just provides the per-core vs. per-thread indicator.
Change Log: v2: - Rename "arch_throttle_mode" to "throttle_mode" and "rdtgroup_rftype_by_name()" to "rdtgroup_rftype_get_by_name()" (Boris).
Fenghua Yu (2): x86/resctrl: Enumerate per-thread MBA x86/resctrl: Enable user to view thread or core throttling mode
Documentation/x86/resctrl_ui.rst | 18 ++++++++- arch/x86/include/asm/cpufeatures.h | 1 + arch/x86/kernel/cpu/cpuid-deps.c | 1 + arch/x86/kernel/cpu/resctrl/core.c | 11 ++++++ arch/x86/kernel/cpu/resctrl/internal.h | 30 ++++++++++++--- arch/x86/kernel/cpu/resctrl/rdtgroup.c | 53 +++++++++++++++++++++++++- arch/x86/kernel/cpu/scattered.c | 1 + 7 files changed, 106 insertions(+), 9 deletions(-)
-- 2.19.1
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