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| author | David S. Miller <davem@davemloft.net> | 2009-02-02 23:55:27 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-02-02 23:55:27 -0800 |
| commit | fb53fde9762432d091dac209bdf4f3f850117c55 (patch) | |
| tree | 607b09022b206a539cb4a924e4ef476443798252 /kernel/cpuset.c | |
| parent | eb4400e3a040b90a3ad805b01fcbc99a5f615c8f (diff) | |
| parent | b1792e367053968f2ddb48bc911d314143ce6242 (diff) | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'kernel/cpuset.c')
| -rw-r--r-- | kernel/cpuset.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/kernel/cpuset.c b/kernel/cpuset.c index a85678865c5..f76db9dcaa0 100644 --- a/kernel/cpuset.c +++ b/kernel/cpuset.c @@ -61,6 +61,14 @@ #include <linux/cgroup.h> /* + * Workqueue for cpuset related tasks. + * + * Using kevent workqueue may cause deadlock when memory_migrate + * is set. So we create a separate workqueue thread for cpuset. + */ +static struct workqueue_struct *cpuset_wq; + +/* * Tracks how many cpusets are currently defined in system. * When there is only one cpuset (the root cpuset) we can * short circuit some hooks. @@ -831,7 +839,7 @@ static DECLARE_WORK(rebuild_sched_domains_work, do_rebuild_sched_domains); */ static void async_rebuild_sched_domains(void) { - schedule_work(&rebuild_sched_domains_work); + queue_work(cpuset_wq, &rebuild_sched_domains_work); } /* @@ -2111,6 +2119,9 @@ void __init cpuset_init_smp(void) hotcpu_notifier(cpuset_track_online_cpus, 0); hotplug_memory_notifier(cpuset_track_online_nodes, 10); + + cpuset_wq = create_singlethread_workqueue("cpuset"); + BUG_ON(!cpuset_wq); } /** |