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| author | Rik van Riel <riel@redhat.com> | 2015-04-24 15:24:27 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-05-20 00:15:06 -0700 |
| commit | 59f30abe94bff50636c8cad45207a01fdcb2ee49 (patch) | |
| tree | de7d08069d48a1a0e7284530de7be26539c1dcdd /lib | |
| parent | e26081808edadfd257c6c9d81014e3b25e9a6118 (diff) | |
show isolated cpus in sysfs
After system bootup, there is no totally reliable way to see
which CPUs are isolated, because the kernel may modify the
CPUs specified on the isolcpus= kernel command line option.
Export the CPU list that actually got isolated in sysfs,
specifically in the file /sys/devices/system/cpu/isolated
This can be used by system management tools like libvirt,
openstack, and others to ensure proper placement of tasks.
Suggested-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Rik van Riel <riel@redhat.com>
Acked-by: Mike Galbraith <umgwanakikbuti@gmail.com>
Acked-by: Chris Metcalf <cmetcalf@ezchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions