linux-kernel - [PATCH V2 7/8] Documentation: x86: Update smp_num_siblings/x86_max

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Message-Id: <20220816051633.17775-8-rui.zhang@intel.com>
Date:   Tue, 16 Aug 2022 13:16:32 +0800
From:   Zhang Rui <rui.zhang@...el.com>
To:     linux-kernel@...r.kernel.org, x86@...nel.org,
        linux-hwmon@...r.kernel.org
Cc:     tglx@...utronix.de, mingo@...hat.com, bp@...en8.de,
        dave.hansen@...ux.intel.com, hpa@...or.com, corbet@....net,
        fenghua.yu@...el.com, jdelvare@...e.com, linux@...ck-us.net,
        len.brown@...el.com, rui.zhang@...el.com
Subject: [PATCH V2 7/8] Documentation: x86: Update smp_num_siblings/x86_max_cores description

smp_num_siblings/cpuinfo_x86.x86_max_cores are retrieved via CPUID EAX
bit_shift value, and they represent the maximum possible number of threads
in a core, and the maximum possible number of cores in a package.

Update the smp_num_siblings/cpuinfo_x86.x86_max_cores description in the
documentation.

Reviewed-by: Len Brown <len.brown@...el.com>
Signed-off-by: Zhang Rui <rui.zhang@...el.com>
---
 Documentation/x86/topology.rst | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/Documentation/x86/topology.rst b/Documentation/x86/topology.rst
index 7f58010ea86a..c5eb5bc42380 100644
--- a/Documentation/x86/topology.rst
+++ b/Documentation/x86/topology.rst
@@ -49,7 +49,8 @@ AMD nomenclature for package is 'Node'.
 
   - cpuinfo_x86.x86_max_cores:
 
-    The number of cores in a package. This information is retrieved via CPUID.
+    The maximum possible number of cores in a package. This information is
+    retrieved via CPUID.
 
   - cpuinfo_x86.x86_max_dies:
 
@@ -102,10 +103,10 @@ AMDs nomenclature for a CMT core is "Compute Unit". The kernel always uses
 
   - smp_num_siblings:
 
-    The number of threads in a core. The number of threads in a package can be
-    calculated by::
+    The maximum possible number of threads in a core. The maximum possible
+    number of threads in a package can be calculated by::
 
-	threads_per_package = cpuinfo_x86.x86_max_cores * smp_num_siblings
+	maximum_threads_per_package = cpuinfo_x86.x86_max_cores * smp_num_siblings
 
 
 Threads
-- 
2.25.1