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| author | Borislav Petkov <bp@alien8.de> | 2016-11-17 12:45:57 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-12-20 11:36:29 +0300 |
| commit | a268b5f1d6e4639fa6d78fc8bdddaebaa032ab24 (patch) | |
| tree | 6877d185974214b6135784567062bc2349d41aaf | |
| parent | 59107e2f48831daedc46973ce4988605ab066de3 (diff) | |
| download | linux-a268b5f1d6e4639fa6d78fc8bdddaebaa032ab24.tar.xz | |
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>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
| -rw-r--r-- | Documentation/x86/topology.txt | 9 |
1 files changed, 9 insertions, 0 deletions
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: |