Messages in this thread Patch in this message | | | Date | Thu, 25 Jun 2009 14:12:26 +0800 | From | Li Zefan <> | Subject | [PATCH][resend] cpusets: document adding/removing cpus to cpuset elaborately |
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Writing a pid to the file, tasks adds that task to that cgroup/cpuset. But to add a cpu/mem to a cpuset, the new list of cpus should be written to the cpuset.mems file which would replace the old list of cpus. Make this clearer in the documentation.
Signed-off-by: Nikanth Karthikesan <knikanth@suse.de> Acked-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Paul Menage <menage@google.com> --- Documentation/cgroups/cpusets.txt | 12 ++++++++++++ 1 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/Documentation/cgroups/cpusets.txt b/Documentation/cgroups/cpusets.txt index f9ca389..1d7e978 100644 --- a/Documentation/cgroups/cpusets.txt +++ b/Documentation/cgroups/cpusets.txt @@ -777,6 +777,18 @@ in cpuset directories: # /bin/echo 1-4 > cpus -> set cpus list to cpus 1,2,3,4 # /bin/echo 1,2,3,4 > cpus -> set cpus list to cpus 1,2,3,4 +To add a CPU to a cpuset, write the new list of CPUs including the +CPU to be added. To add 6 to the above cpuset: + +# /bin/echo 1-4,6 > cpus -> set cpus list to cpus 1,2,3,4,6 + +Similarly to remove a CPU from a cpuset, write the new list of CPUs +without the CPU to be removed. + +To remove all the CPUs: + +# /bin/echo "" > cpus -> clear cpus list + 2.3 Setting flags -----------------
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