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| author | Miao Xie <miaox@cn.fujitsu.com> | 2008-06-05 22:45:54 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-06-06 11:29:08 -0700 |
| commit | 6a7d68e899b7f609708e7590784344f03640f774 (patch) | |
| tree | b4b12a178c78063c0adf106c8d1f5a1de03c6aa8 /Documentation/cpusets.txt | |
| parent | c337869d95011495fa181536786e74aa2d7ff031 (diff) | |
| download | op-kernel-dev-6a7d68e899b7f609708e7590784344f03640f774.zip op-kernel-dev-6a7d68e899b7f609708e7590784344f03640f774.tar.gz | |
cpusets: fix and update Documentation
Make the doc consistent with current cpusets implementation.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Acked-by: Paul Jackson <pj@sgi.com>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/cpusets.txt')
| -rw-r--r-- | Documentation/cpusets.txt | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/Documentation/cpusets.txt b/Documentation/cpusets.txt index fb7b361..d803c5c 100644 --- a/Documentation/cpusets.txt +++ b/Documentation/cpusets.txt @@ -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 @@ -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(). @@ -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 |
