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| author |   Fenghua Yu <fenghua.yu@intel.com> | 2020-08-24 12:11:20 -0700 |
|---|---|---|
| committer |   Borislav Petkov <bp@suse.de> | 2020-08-26 17:46:12 +0200 |
| commit | e48cb1a3fb9165009fe318e1db2fde10d303c1d3 (patch) | |
| tree | 72288e2501e3010113c871b76428c915877192ba /arch/x86/kernel/cpu/resctrl/rdtgroup.c | |
| parent | cacheinfo: Move resctrl's get_cache_id() to the cacheinfo header file (diff) | |
| download | linux-dev-e48cb1a3fb9165009fe318e1db2fde10d303c1d3.tar.xz linux-dev-e48cb1a3fb9165009fe318e1db2fde10d303c1d3.zip | |
x86/resctrl: Enumerate per-thread MBA controls
Some systems support per-thread Memory Bandwidth Allocation (MBA) which
applies a throttling delay value to each hardware thread instead of to
a core. Per-thread MBA is enumerated by CPUID.
No feature flag is shown in /proc/cpuinfo. User applications need to
check a resctrl throttling mode info file to know if the feature is
supported.
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Babu Moger <babu.moger@amd.com>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lkml.kernel.org/r/1598296281-127595-2-git-send-email-fenghua.yu@intel.com
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