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yaml
---
r: 97779
b: refs/heads/master
c: 6a7d68e
h: refs/heads/master
i:
  97777: 047e408
  97775: c79feb0
v: v3
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Miao Xie authored and Linus Torvalds committed Jun 6, 2008
1 parent 130de78 commit e40c789
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2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: c337869d95011495fa181536786e74aa2d7ff031
refs/heads/master: 6a7d68e899b7f609708e7590784344f03640f774
9 changes: 6 additions & 3 deletions trunk/Documentation/cpusets.txt
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Expand Up @@ -199,7 +199,7 @@ using the sched_setaffinity, mbind and set_mempolicy system calls.
The following rules apply to each cpuset:

- Its CPUs and Memory Nodes must be a subset of its parents.
- It can only be marked exclusive if its parent is.
- It can't be marked exclusive unless its parent is.
- If its cpu or memory is exclusive, they may not overlap any sibling.

These rules, and the natural hierarchy of cpusets, enable efficient
Expand Down Expand Up @@ -345,7 +345,7 @@ is modified to perform an inline check for this PF_SPREAD_PAGE task
flag, and if set, a call to a new routine cpuset_mem_spread_node()
returns the node to prefer for the allocation.

Similarly, setting 'memory_spread_cache' turns on the flag
Similarly, setting 'memory_spread_slab' turns on the flag
PF_SPREAD_SLAB, and appropriately marked slab caches will allocate
pages from the node returned by cpuset_mem_spread_node().

Expand Down Expand Up @@ -709,7 +709,10 @@ Now you want to do something with this cpuset.

In this directory you can find several files:
# ls
cpus cpu_exclusive mems mem_exclusive mem_hardwall tasks
cpu_exclusive memory_migrate mems tasks
cpus memory_pressure notify_on_release
mem_exclusive memory_spread_page sched_load_balance
mem_hardwall memory_spread_slab sched_relax_domain_level

Reading them will give you information about the state of this cpuset:
the CPUs and Memory Nodes it can use, the processes that are using
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