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Commit a268b5f1 authored by Borislav Petkov's avatar Borislav Petkov Committed by Ingo Molnar
Browse files

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: default avatarBorislav 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: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 59107e2f

Documentation/x86/topology.txt

+9 −0
Original line number Diff line number Diff line
@@ -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: