Note : compiled and tested on x86_32 and x86_64 only, but these patches take care of other arches as well. Cc: linux-arch@xxxxxxxxxxxxxxx Thanks for your feedback Andi ! [PATCH v2 0/4] kthread: NUMA aware kthread_create_on_cpu() All kthreads being created from a single helper task, they all use memory from a single node for their kernel stack and task struct. This patch suite creates kthread_create_on_cpu(), adding a 'cpu' parameter to parameters already used by kthread_create(). This parameter serves in allocating memory for the new kthread on its memory node if available. Users of this new function are : ksoftirqd, kworker, migration, pktgend... Patch 1/4 mm: NUMA aware alloc_task_struct_node() alloc_task_struct(void) becomes alloc_task_struct_node(int node) Patch 2/4 mm: NUMA aware alloc_thread_info_node() alloc_thread_info(struct task_struct *tsk) becomes alloc_thread_info_node(struct task_struct *tsk, int node) Patch 3/4 kthread: NUMA aware kthread_create_on_cpu() Patch 4/4 kthread: use kthread_create_on_cpu() ksoftirqd, kworker, migration, and pktgend kthreads can be created with NUMA aware kthread_create_on_cpu() Signed-off-by: Eric Dumazet <eric.dumazet@xxxxxxxxx> Cc: David Miller <davem@xxxxxxxxxxxxx> Cc: Andi Kleen <andi@xxxxxxxxxxxxxx> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx> Cc: Tejun Heo <tj@xxxxxxxxxx> Cc: linux-arch@xxxxxxxxxxxxxxx Cc: Tony Luck <tony.luck@xxxxxxxxx> Cc: Fenghua Yu <fenghua.yu@xxxxxxxxx> --- arch/cris/include/asm/thread_info.h | 2 - arch/frv/include/asm/processor.h | 2 - arch/frv/include/asm/thread_info.h | 13 ++------ arch/frv/kernel/process.c | 5 ++- arch/ia64/include/asm/thread_info.h | 14 +++++++-- arch/m32r/include/asm/thread_info.h | 13 ++------ arch/mips/include/asm/thread_info.h | 6 ++-- arch/mn10300/include/asm/thread_info.h | 6 ++-- arch/powerpc/include/asm/thread_info.h | 2 - arch/powerpc/kernel/process.c | 4 +- arch/score/include/asm/thread_info.h | 2 - arch/sh/include/asm/thread_info.h | 2 - arch/sh/kernel/process.c | 16 ++++++----- arch/sparc/include/asm/thread_info_32.h | 6 ++-- arch/sparc/include/asm/thread_info_64.h | 24 ++++++++-------- arch/sparc/mm/srmmu.c | 4 +- arch/sparc/mm/sun4c.c | 4 +- arch/tile/include/asm/thread_info.h | 2 - arch/tile/kernel/process.c | 4 +- arch/um/include/asm/processor-generic.h | 2 - arch/x86/include/asm/thread_info.h | 10 +++++- include/linux/kthread.h | 14 ++++++--- include/linux/sched.h | 1 kernel/fork.c | 20 ++++++++----- kernel/kthread.c | 32 +++++++++++++++++----- kernel/softirq.c | 3 +- kernel/stop_machine.c | 4 +- kernel/workqueue.c | 4 +- net/core/pktgen.c | 3 +- 29 files changed, 135 insertions(+), 89 deletions(-) -- 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
