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Date:   Wed, 20 Dec 2017 14:57:19 -0800
From:   "Fenghua Yu" <>
To:     "Thomas Gleixner" <>,
        "Ingo Molnar" <>,
        "H. Peter Anvin" <>,
        "Tony Luck" <>,
        "Shivappa, Vikas" <>,
        "Ravi V Shankar" <>,
        "Prakhya, Sai Praneeth" <>,
        "Chatre, Reinette" <>,
        "linux-kernel" <>,
        "x86" <>
Cc:     Fenghua Yu <>
Subject: [PATCH 1/6] x86/intel_rdt: Classify /proc/cpuinfo flag bits and add missing bits in documentation

From: Fenghua Yu <>

With more flag bits in /proc/cpuinfo for RDT, it's better to classify the
bits for readability.

Some previously missing bits are added as well.

Signed-off-by: Fenghua Yu <>
 Documentation/x86/intel_rdt_ui.txt | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/Documentation/x86/intel_rdt_ui.txt b/Documentation/x86/intel_rdt_ui.txt
index 6851854..1ad77b1 100644
--- a/Documentation/x86/intel_rdt_ui.txt
+++ b/Documentation/x86/intel_rdt_ui.txt
@@ -7,7 +7,13 @@ Tony Luck <>
 Vikas Shivappa <>
 This feature is enabled by the CONFIG_INTEL_RDT Kconfig and the
-X86 /proc/cpuinfo flag bits "rdt", "cqm", "cat_l3" and "cdp_l3".
+X86 /proc/cpuinfo flag bits:
+RDT (Resource Director Technology) Allocation - "rdt_a"
+CAT (Cache Allocation Technology) - "cat_l3", "cat_l2"
+CDP (Code and Data Prioritization ) - "cdp_l3"
+CQM (Cache QoS Monitoring) - "cqm_llc", "cqm_occup_llc"
+MBM (Memory Bandwidth Monitoring) - "cqm_mbm_total", "cqm_mbm_local"
+MBA (Memory Bandwidth Allocation) - "mba"
 To use the feature mount the file system:

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