Commit-ID: a268b5f1d6e4639fa6d78fc8bdddaebaa032ab24 Gitweb: http://git.kernel.org/tip/a268b5f1d6e4639fa6d78fc8bdddaebaa032ab24 Author: Borislav Petkov <b...@alien8.de> AuthorDate: Thu, 17 Nov 2016 10:45:57 +0100 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Tue, 20 Dec 2016 09:36:29 +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 <b...@suse.de> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Yazen Ghannam <yazen.ghan...@amd.com> Link: http://lkml.kernel.org/r/20161117094557.jm6hwzdd52h7i...@pd.tnic Signed-off-by: Thomas Gleixner <t...@linutronix.de> Signed-off-by: Ingo Molnar <mi...@kernel.org> --- 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:
