Commit-ID: dbf12ae564c022a741a6983b2bb4aeea5b8c0efd Gitweb: http://git.kernel.org/tip/dbf12ae564c022a741a6983b2bb4aeea5b8c0efd Author: Borislav Petkov <[email protected]> AuthorDate: Thu, 17 Nov 2016 10:45:57 +0100 Committer: Thomas Gleixner <[email protected]> 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 <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Yazen Ghannam <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]> --- 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:
