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kthread: use kthread_create_on_node()

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ksoftirqd, kworker, migration, and pktgend kthreads can be created with
kthread_create_on_node(), to get proper NUMA affinities for their stack and
task_struct.

Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: David S. Miller <[email protected]>
Reviewed-by: Andi Kleen <[email protected]>
Acked-by: Rusty Russell <[email protected]>
Acked-by: Tejun Heo <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: Fenghua Yu <[email protected]>
Cc: David Howells <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Eric Dumazet
2011-03-22 17:44:01 -07:00
committed by Linus Torvalds
parent 207205a2ba
commit 94dcf29a11
4 changed files with 16 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel/softirq.c
+4 -1
View File
@@ -845,7 +845,10 @@ static int __cpuinit cpu_callback(struct notifier_block *nfb,
switch (action) {
case CPU_UP_PREPARE:
case CPU_UP_PREPARE_FROZEN:
p = kthread_create(run_ksoftirqd, hcpu, "ksoftirqd/%d", hotcpu);
p = kthread_create_on_node(run_ksoftirqd,
hcpu,
cpu_to_node(hotcpu),
"ksoftirqd/%d", hotcpu);
if (IS_ERR(p)) {
printk("ksoftirqd for %i failed\n", hotcpu);
return notifier_from_errno(PTR_ERR(p));
kernel/stop_machine.c
+4 -2
View File
@@ -301,8 +301,10 @@ static int __cpuinit cpu_stop_cpu_callback(struct notifier_block *nfb,
case CPU_UP_PREPARE:
BUG_ON(stopper->thread || stopper->enabled ||
!list_empty(&stopper->works));
p = kthread_create(cpu_stopper_thread, stopper, "migration/%d",
cpu);
p = kthread_create_on_node(cpu_stopper_thread,
stopper,
cpu_to_node(cpu),
"migration/%d", cpu);
if (IS_ERR(p))
return notifier_from_errno(PTR_ERR(p));
get_task_struct(p);
kernel/workqueue.c
+4 -2
View File
@@ -1366,8 +1366,10 @@ static struct worker *create_worker(struct global_cwq *gcwq, bool bind)
worker->id = id;
if (!on_unbound_cpu)
worker->task = kthread_create(worker_thread, worker,
"kworker/%u:%d", gcwq->cpu, id);
worker->task = kthread_create_on_node(worker_thread,
worker,
cpu_to_node(gcwq->cpu),
"kworker/%u:%d", gcwq->cpu, id);
else
worker->task = kthread_create(worker_thread, worker,
"kworker/u:%d", id);
net/core/pktgen.c
+4 -1
View File
@@ -3761,7 +3761,10 @@ static int __init pktgen_create_thread(int cpu)
list_add_tail(&t->th_list, &pktgen_threads);
init_completion(&t->start_done);
p = kthread_create(pktgen_thread_worker, t, "kpktgend_%d", cpu);
p = kthread_create_on_node(pktgen_thread_worker,
t,
cpu_to_node(cpu),
"kpktgend_%d", cpu);
if (IS_ERR(p)) {
pr_err("kernel_thread() failed for cpu %d\n", t->cpu);
list_del(&t->th_list);