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author | Ingo Molnar <mingo@elte.hu> | 2008-06-25 12:27:29 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-06-25 12:27:29 +0200 |
commit | 5ce001b0e56638c726270d4f9e05d46d4250dfbb (patch) | |
tree | c21cf007ddef99d5e8b23dde9621bd9152e676a8 /Documentation/cpusets.txt | |
parent | 7c9f8861e6c9c839f913e49b98c3854daca18f27 (diff) | |
parent | 543cf4cb3fe6f6cae3651ba918b9c56200b257d0 (diff) |
Merge branch 'linus' into stackprotectortip-stackprotector-2008-06-25_10.27_Wed
Diffstat (limited to 'Documentation/cpusets.txt')
-rw-r--r-- | Documentation/cpusets.txt | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/Documentation/cpusets.txt b/Documentation/cpusets.txt index fb7b361e6eea..353504de3084 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(). @@ -542,7 +542,7 @@ otherwise initial value -1 that indicates the cpuset has no request. 2 : search cores in a package. 3 : search cpus in a node [= system wide on non-NUMA system] ( 4 : search nodes in a chunk of node [on NUMA system] ) - ( 5~ : search system wide [on NUMA system]) + ( 5 : search system wide [on NUMA system] ) This file is per-cpuset and affect the sched domain where the cpuset belongs to. Therefore if the flag 'sched_load_balance' of a cpuset @@ -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 |