diff options
| author | Len Brown <len.brown@intel.com> | 2019-05-13 13:58:55 -0400 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-05-23 10:08:34 +0200 |
| commit | b73ed8dc0597c11ec5064d06b9bbd4e541b6d4e7 (patch) | |
| tree | 2945751e5a2c5b472ce3caaaad132fa92d2d5a99 /Documentation/cputopology.txt | |
| parent | cfcd82e632882372db960b50782a439a8ba56c09 (diff) | |
topology: Create package_cpus sysfs attribute
The existing sysfs cpu/topology/core_siblings (and core_siblings_list)
attributes are documented, implemented, and used by programs to represent
set of logical CPUs sharing the same package.
This makes sense if the next topology level above a core is always a
package. But on systems where there is a die topology level between a core
and a package, the name and its definition become inconsistent.
So without changing its function, add a name for this map that describes
what it actually is -- package CPUs -- the set of CPUs that share the same
package.
This new name will be immune to changes in topology, since it describes
threads at the current level, not siblings at a contained level.
Suggested-by: Brice Goglin <Brice.Goglin@inria.fr>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/d9d3228b82fb5665e6f93a0ccd033fe022558521.1557769318.git.len.brown@intel.com
Diffstat (limited to 'Documentation/cputopology.txt')
| -rw-r--r-- | Documentation/cputopology.txt | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/Documentation/cputopology.txt b/Documentation/cputopology.txt index 2ff8a1e9a2db..48af5c290e20 100644 --- a/Documentation/cputopology.txt +++ b/Documentation/cputopology.txt @@ -46,15 +46,15 @@ thread_siblings_list: human-readable list of cpuX's hardware threads within the same core as cpuX. -core_siblings: +package_cpus: - internal kernel map of cpuX's hardware threads within the same - physical_package_id. + internal kernel map of the CPUs sharing the same physical_package_id. + (deprecated name: "core_siblings") -core_siblings_list: +package_cpus_list: - human-readable list of cpuX's hardware threads within the same - physical_package_id. + human-readable list of CPUs sharing the same physical_package_id. + (deprecated name: "core_siblings_list") book_siblings: |