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-rw-r--r--Documentation/cpusets.txt11
1 files changed, 8 insertions, 3 deletions
diff --git a/Documentation/cpusets.txt b/Documentation/cpusets.txt
index d803c5c68ab5..1f5a924d1e56 100644
--- a/Documentation/cpusets.txt
+++ b/Documentation/cpusets.txt
@@ -154,13 +154,15 @@ browsing and modifying the cpusets presently known to the kernel. No
154new system calls are added for cpusets - all support for querying and 154new system calls are added for cpusets - all support for querying and
155modifying cpusets is via this cpuset file system. 155modifying cpusets is via this cpuset file system.
156 156
157The /proc/<pid>/status file for each task has two added lines, 157The /proc/<pid>/status file for each task has four added lines,
158displaying the tasks cpus_allowed (on which CPUs it may be scheduled) 158displaying the tasks cpus_allowed (on which CPUs it may be scheduled)
159and mems_allowed (on which Memory Nodes it may obtain memory), 159and mems_allowed (on which Memory Nodes it may obtain memory),
160in the format seen in the following example: 160in the two formats seen in the following example:
161 161
162 Cpus_allowed: ffffffff,ffffffff,ffffffff,ffffffff 162 Cpus_allowed: ffffffff,ffffffff,ffffffff,ffffffff
163 Cpus_allowed_list: 0-127
163 Mems_allowed: ffffffff,ffffffff 164 Mems_allowed: ffffffff,ffffffff
165 Mems_allowed_list: 0-63
164 166
165Each cpuset is represented by a directory in the cgroup file system 167Each cpuset is represented by a directory in the cgroup file system
166containing (on top of the standard cgroup files) the following 168containing (on top of the standard cgroup files) the following
@@ -542,7 +544,10 @@ otherwise initial value -1 that indicates the cpuset has no request.
542 2 : search cores in a package. 544 2 : search cores in a package.
543 3 : search cpus in a node [= system wide on non-NUMA system] 545 3 : search cpus in a node [= system wide on non-NUMA system]
544 ( 4 : search nodes in a chunk of node [on NUMA system] ) 546 ( 4 : search nodes in a chunk of node [on NUMA system] )
545 ( 5~ : search system wide [on NUMA system]) 547 ( 5 : search system wide [on NUMA system] )
548
549The system default is architecture dependent. The system default
550can be changed using the relax_domain_level= boot parameter.
546 551
547This file is per-cpuset and affect the sched domain where the cpuset 552This file is per-cpuset and affect the sched domain where the cpuset
548belongs to. Therefore if the flag 'sched_load_balance' of a cpuset 553belongs to. Therefore if the flag 'sched_load_balance' of a cpuset