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From: Borislav Petkov <bp@alien8.de>
To: Peter Zijlstra <peterz@infradead.org>
Cc: X86 ML <x86@kernel.org>, LKML <linux-kernel@vger.kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Yazen Ghannam <yazen.ghannam@amd.com>
Subject: [PATCH -v1.1] x86/topology: Document cpu_llc_id
Date: Thu, 17 Nov 2016 10:45:57 +0100
Message-ID: <20161117094557.jm6hwzdd52h7iwnj@pd.tnic> (raw)
In-Reply-To: <20161114062901.il4ucv5muw4ksfsv@pd.tnic>

It means different things on Intel and AMD so write it down so that
there's no confusion.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yazen Ghannam <yazen.ghannam@amd.com>
---
 Documentation/x86/topology.txt | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/x86/topology.txt b/Documentation/x86/topology.txt
index 06afac252f5b..f3e9d7e9ed6c 100644
--- a/Documentation/x86/topology.txt
+++ b/Documentation/x86/topology.txt
@@ -63,6 +63,15 @@ The topology of a system is described in the units of:
     The maximum possible number of packages in the system. Helpful for per
     package facilities to preallocate per package information.
 
+  - cpu_llc_id:
+
+    A per-CPU variable containing:
+    - On Intel, the first APIC ID of the list of CPUs sharing the Last Level
+    Cache
+
+    - On AMD, the Node ID or Core Complex ID containing the Last Level
+    Cache. In general, it is a number identifying an LLC uniquely on the
+    system.
 
 * Cores:
 
-- 
2.10.0


-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.

  reply index

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-07  9:22 [PATCH] " Borislav Petkov
2016-09-07 10:36 ` Peter Zijlstra
2016-11-14  6:29   ` Borislav Petkov
2016-11-17  9:45     ` Borislav Petkov [this message]
2016-11-17 12:57       ` [PATCH -v1.1] " Yazen Ghannam
2016-11-17 14:16         ` Borislav Petkov
2016-12-19 11:34       ` [tip:x86/urgent] " tip-bot for Borislav Petkov
2016-12-20  9:34       ` tip-bot for Borislav Petkov

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