Em Fri, 26 Apr 2019 23:31:48 +0800
Changbin Du <changbin.du@xxxxxxxxx> escreveu:
> This converts the plain text documentation to reStructuredText format and
> add it to Sphinx TOC tree. No essential content change.
>
> Signed-off-by: Changbin Du <changbin.du@xxxxxxxxx>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@xxxxxxxxxx>
> ---
> ...-for-cpusets => fake-numa-for-cpusets.rst} | 25 +++++++++++++------
> Documentation/x86/x86_64/index.rst | 1 +
> 2 files changed, 19 insertions(+), 7 deletions(-)
> rename Documentation/x86/x86_64/{fake-numa-for-cpusets => fake-numa-for-cpusets.rst} (85%)
>
> diff --git a/Documentation/x86/x86_64/fake-numa-for-cpusets b/Documentation/x86/x86_64/fake-numa-for-cpusets.rst
> similarity index 85%
> rename from Documentation/x86/x86_64/fake-numa-for-cpusets
> rename to Documentation/x86/x86_64/fake-numa-for-cpusets.rst
> index 4b09f18831f8..74fbb78b3c67 100644
> --- a/Documentation/x86/x86_64/fake-numa-for-cpusets
> +++ b/Documentation/x86/x86_64/fake-numa-for-cpusets.rst
> @@ -1,5 +1,12 @@
> +.. SPDX-License-Identifier: GPL-2.0
> +
> +=====================
> +Fake NUMA For CPUSets
> +=====================
> +
> +:Author: David Rientjes <rientjes@xxxxxxxxxxxxxxxxx>
> +
> Using numa=fake and CPUSets for Resource Management
> -Written by David Rientjes <rientjes@xxxxxxxxxxxxxxxxx>
>
> This document describes how the numa=fake x86_64 command-line option can be used
> in conjunction with cpusets for coarse memory management. Using this feature,
> @@ -20,7 +27,7 @@ you become more familiar with using this combination for resource control,
> you'll determine a better setup to minimize the number of nodes you have to deal
> with.
>
> -A machine may be split as follows with "numa=fake=4*512," as reported by dmesg:
> +A machine may be split as follows with "numa=fake=4*512," as reported by dmesg::
>
> Faking node 0 at 0000000000000000-0000000020000000 (512MB)
> Faking node 1 at 0000000020000000-0000000040000000 (512MB)
> @@ -34,7 +41,7 @@ A machine may be split as follows with "numa=fake=4*512," as reported by dmesg:
>
> Now following the instructions for mounting the cpusets filesystem from
> Documentation/cgroup-v1/cpusets.txt, you can assign fake nodes (i.e. contiguous memory
> -address spaces) to individual cpusets:
> +address spaces) to individual cpusets::
>
> [root@xroads /]# mkdir exampleset
> [root@xroads /]# mount -t cpuset none exampleset
> @@ -47,7 +54,7 @@ Now this cpuset, 'ddset', will only allowed access to fake nodes 0 and 1 for
> memory allocations (1G).
>
> You can now assign tasks to these cpusets to limit the memory resources
> -available to them according to the fake nodes assigned as mems:
> +available to them according to the fake nodes assigned as mems::
>
> [root@xroads /exampleset/ddset]# echo $$ > tasks
> [root@xroads /exampleset/ddset]# dd if=/dev/zero of=tmp bs=1024 count=1G
> @@ -57,9 +64,13 @@ Notice the difference between the system memory usage as reported by
> /proc/meminfo between the restricted cpuset case above and the unrestricted
> case (i.e. running the same 'dd' command without assigning it to a fake NUMA
> cpuset):
> - Unrestricted Restricted
> - MemTotal: 3091900 kB 3091900 kB
> - MemFree: 42113 kB 1513236 kB
> +
> + ======== ============ ==========
> + Name Unrestricted Restricted
> + ======== ============ ==========
> + MemTotal 3091900 kB 3091900 kB
> + MemFree 42113 kB 1513236 kB
> + ======== ============ ==========
>
> This allows for coarse memory management for the tasks you assign to particular
> cpusets. Since cpusets can form a hierarchy, you can create some pretty
> diff --git a/Documentation/x86/x86_64/index.rst b/Documentation/x86/x86_64/index.rst
> index 7b8c82151358..e2a324cde671 100644
> --- a/Documentation/x86/x86_64/index.rst
> +++ b/Documentation/x86/x86_64/index.rst
> @@ -11,3 +11,4 @@ x86_64 Support
> uefi
> mm
> 5level-paging
> + fake-numa-for-cpusets
Thanks,
Mauro
