The patch titled kthread: use kthread_create_on_cpu() has been added to the -mm tree. Its filename is kthread-use-kthread_create_on_cpu.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: kthread: use kthread_create_on_cpu() From: Eric Dumazet <eric.dumazet@xxxxxxxxx> ksoftirqd, kworker, migration, and pktgend kthreads can be created with kthread_create_on_cpu(), to get proper NUMA affinities for their stack and task_struct. Signed-off-by: Eric Dumazet <eric.dumazet@xxxxxxxxx> Acked-by: David S. Miller <davem@xxxxxxxxxxxxx> Reviewed-by: Andi Kleen <ak@xxxxxxxxxxxxxxx> Acked-by: Rusty Russell <rusty@xxxxxxxxxxxxxxx> Acked-by: Tejun Heo <tj@xxxxxxxxxx> Cc: Tony Luck <tony.luck@xxxxxxxxx> Cc: Fenghua Yu <fenghua.yu@xxxxxxxxx> Cc: David Howells <dhowells@xxxxxxxxxx> Cc: <linux-arch@xxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- kernel/softirq.c | 3 ++- kernel/stop_machine.c | 4 ++-- kernel/workqueue.c | 4 ++-- net/core/pktgen.c | 3 ++- 4 files changed, 8 insertions(+), 6 deletions(-) diff -puN kernel/softirq.c~kthread-use-kthread_create_on_cpu kernel/softirq.c --- a/kernel/softirq.c~kthread-use-kthread_create_on_cpu +++ a/kernel/softirq.c @@ -831,7 +831,8 @@ static int __cpuinit cpu_callback(struct switch (action) { case CPU_UP_PREPARE: case CPU_UP_PREPARE_FROZEN: - p = kthread_create(run_ksoftirqd, hcpu, "ksoftirqd/%d", hotcpu); + p = kthread_create_on_cpu(run_ksoftirqd, hcpu, hotcpu, + "ksoftirqd/%d", hotcpu); if (IS_ERR(p)) { printk("ksoftirqd for %i failed\n", hotcpu); return notifier_from_errno(PTR_ERR(p)); diff -puN kernel/stop_machine.c~kthread-use-kthread_create_on_cpu kernel/stop_machine.c --- a/kernel/stop_machine.c~kthread-use-kthread_create_on_cpu +++ a/kernel/stop_machine.c @@ -301,8 +301,8 @@ static int __cpuinit cpu_stop_cpu_callba 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_cpu(cpu_stopper_thread, stopper, cpu, + "migration/%d", cpu); if (IS_ERR(p)) return notifier_from_errno(PTR_ERR(p)); get_task_struct(p); diff -puN kernel/workqueue.c~kthread-use-kthread_create_on_cpu kernel/workqueue.c --- a/kernel/workqueue.c~kthread-use-kthread_create_on_cpu +++ a/kernel/workqueue.c @@ -1318,8 +1318,8 @@ static struct worker *create_worker(stru 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_cpu(worker_thread, worker, gcwq->cpu, + "kworker/%u:%d", gcwq->cpu, id); else worker->task = kthread_create(worker_thread, worker, "kworker/u:%d", id); diff -puN net/core/pktgen.c~kthread-use-kthread_create_on_cpu net/core/pktgen.c --- a/net/core/pktgen.c~kthread-use-kthread_create_on_cpu +++ a/net/core/pktgen.c @@ -3811,7 +3811,8 @@ static int __init pktgen_create_thread(i 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_cpu(pktgen_thread_worker, t, cpu, + "kpktgend_%d", cpu); if (IS_ERR(p)) { pr_err("kernel_thread() failed for cpu %d\n", t->cpu); list_del(&t->th_list); _ Patches currently in -mm which might be from eric.dumazet@xxxxxxxxx are origin.patch linux-next.patch irq-use-per_cpu-kstat_irqs.patch timers-use-this_cpu_read.patch mm-numa-aware-alloc_task_struct_node.patch mm-numa-aware-alloc_thread_info_node.patch kthread-numa-aware-kthread_create_on_cpu.patch kthread-use-kthread_create_on_cpu.patch include-asm-generic-vmlinuxldsh-make-readmostly-section-correctly-align.patch percpu-add-new-macros-to-make-percpu-readmostly-section-correctly-align.patch percpu-use-new-macros-for-x86-percpu-readmostly-section.patch -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html