[PATCH] cpusets: fix and update Documentation

From: Miao Xie
Date: Fri May 23 2008 - 03:08:18 EST

Make the doc consistent with current cpusets implementation.

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

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