Messages in this thread Patch in this message | | | Date | Mon, 19 Dec 2016 03:34:59 -0800 | From | tip-bot for Borislav Petkov <> | Subject | [tip:x86/urgent] x86/topology: Document cpu_llc_id |
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Commit-ID: dbf12ae564c022a741a6983b2bb4aeea5b8c0efd Gitweb: http://git.kernel.org/tip/dbf12ae564c022a741a6983b2bb4aeea5b8c0efd Author: Borislav Petkov <bp@alien8.de> AuthorDate: Thu, 17 Nov 2016 10:45:57 +0100 Committer: Thomas Gleixner <tglx@linutronix.de> CommitDate: Mon, 19 Dec 2016 12:27:53 +0100
x86/topology: Document cpu_llc_id
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: Yazen Ghannam <yazen.ghannam@amd.com> Link: http://lkml.kernel.org/r/20161117094557.jm6hwzdd52h7iwnj@pd.tnic Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
--- Documentation/x86/topology.txt | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/Documentation/x86/topology.txt b/Documentation/x86/topology.txt index 06afac2..f3e9d7e 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:
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