Subject: [merged] kthread-ensure-locality-of-task_struct-allocations.patch removed from -mm tree To: nacc@xxxxxxxxxxxxxxxxxx,anton@xxxxxxxxx,benh@xxxxxxxxxxxxxxxxxxx,cl@xxxxxxxxx,iamjoonsoo.kim@xxxxxxx,jack@xxxxxxx,liwanp@xxxxxxxxxxxxxxxxxx,oleg@xxxxxxxxxx,penguin-kernel@xxxxxxxxxxxxxxxxxxx,rientjes@xxxxxxxxxx,tglx@xxxxxxxxxxxxx,tj@xxxxxxxxxx,mm-commits@xxxxxxxxxxxxxxx From: akpm@xxxxxxxxxxxxxxxxxxxx Date: Fri, 04 Apr 2014 12:29:22 -0700 The patch titled Subject: kthread: ensure locality of task_struct allocations has been removed from the -mm tree. Its filename was kthread-ensure-locality-of-task_struct-allocations.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Nishanth Aravamudan <nacc@xxxxxxxxxxxxxxxxxx> Subject: kthread: ensure locality of task_struct allocations In the presence of memoryless nodes, numa_node_id() will return the current CPU's NUMA node, but that may not be where we expect to allocate from memory from. Instead, we should rely on the fallback code in the memory allocator itself, by using NUMA_NO_NODE. Also, when calling kthread_create_on_node(), use the nearest node with memory to the cpu in question, rather than the node it is running on. Signed-off-by: Nishanth Aravamudan <nacc@xxxxxxxxxxxxxxxxxx> Reviewed-by: Christoph Lameter <cl@xxxxxxxxx> Acked-by: David Rientjes <rientjes@xxxxxxxxxx> Cc: Anton Blanchard <anton@xxxxxxxxx> Cc: Tejun Heo <tj@xxxxxxxxxx> Cc: Oleg Nesterov <oleg@xxxxxxxxxx> Cc: Jan Kara <jack@xxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx> Cc: Wanpeng Li <liwanp@xxxxxxxxxxxxxxxxxx> Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx> Cc: Ben Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- kernel/kthread.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff -puN kernel/kthread.c~kthread-ensure-locality-of-task_struct-allocations kernel/kthread.c --- a/kernel/kthread.c~kthread-ensure-locality-of-task_struct-allocations +++ a/kernel/kthread.c @@ -217,7 +217,7 @@ int tsk_fork_get_node(struct task_struct if (tsk == kthreadd_task) return tsk->pref_node_fork; #endif - return numa_node_id(); + return NUMA_NO_NODE; } static void create_kthread(struct kthread_create_info *create) @@ -369,7 +369,7 @@ struct task_struct *kthread_create_on_cp { struct task_struct *p; - p = kthread_create_on_node(threadfn, data, cpu_to_node(cpu), namefmt, + p = kthread_create_on_node(threadfn, data, cpu_to_mem(cpu), namefmt, cpu); if (IS_ERR(p)) return p; _ Patches currently in -mm which might be from nacc@xxxxxxxxxxxxxxxxxx are origin.patch mm-exclude-memory-less-nodes-from-zone_reclaim.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html