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authorSrivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>2008-01-25 21:08:00 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-25 21:08:00 +0100
commita183561567b5446d3362b4839bd4f744f4b2af1e (patch)
tree7bfa46fd0bf4a96e96500732d188f1ef4b04454d /init
parent58e2d4ca581167c2a079f4ee02be2f0bc52e8729 (diff)
sched: introduce a mutex and corresponding API to serialize access to doms_curarray
doms_cur[] array represents various scheduling domains which are mutually exclusive. Currently cpusets code can modify this array (by calling partition_sched_domains()) as a result of user modifying sched_load_balance flag for various cpusets. This patch introduces a mutex and corresponding API (only when CONFIG_FAIR_GROUP_SCHED is defined) which allows a reader to safely read the doms_cur[] array w/o worrying abt concurrent modifications to the array. The fair group scheduler code (introduced in next patch of this series) makes use of this mutex to walk thr' doms_cur[] array while rebalancing shares of task groups across cpus. Signed-off-by: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'init')
0 files changed, 0 insertions, 0 deletions