Hi, tj,
On 09/27/2015 01:53 AM, Tejun Heo wrote:
Hello, Tang.
On Sat, Sep 26, 2015 at 05:31:07PM +0800, Tang Chen wrote:
@@ -307,13 +307,19 @@ static inline struct page *alloc_pages_node(int nid,
gfp_t gfp_mask,
if (nid < 0)
nid = numa_node_id();
+ if (!node_onli
Hello, Tang.
On Sat, Sep 26, 2015 at 05:31:07PM +0800, Tang Chen wrote:
> >>@@ -307,13 +307,19 @@ static inline struct page *alloc_pages_node(int nid,
> >>gfp_t gfp_mask,
> >>if (nid < 0)
> >>nid = numa_node_id();
> >>+ if (!node_online(nid))
> >>+ nid = get_near_onlin
Hi, Christoph, tj,
On 09/11/2015 08:14 AM, Christoph Lameter wrote:
On Thu, 10 Sep 2015, Tejun Heo wrote:
Why not just update node_data[]->node_zonelist in the first place?
Also, what's the synchronization rule here? How are allocators
synchronized against node hot [un]plugs?
Also, shouldn't
Hi, tj
On 09/11/2015 03:29 AM, Tejun Heo wrote:
Hello,
On Thu, Sep 10, 2015 at 12:27:45PM +0800, Tang Chen wrote:
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index ad35f30..1a1324f 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -307,13 +307,19 @@ static inline struct
On Thu, 10 Sep 2015, Tejun Heo wrote:
> > Why not just update node_data[]->node_zonelist in the first place?
> > Also, what's the synchronization rule here? How are allocators
> > synchronized against node hot [un]plugs?
>
> Also, shouldn't kmalloc_node() or any public allocator fall back
> autom
Hello,
On Thu, Sep 10, 2015 at 05:02:31PM -0500, Christoph Lameter wrote:
> > Also, shouldn't kmalloc_node() or any public allocator fall back
> > automatically to a near node w/o GFP_THISNODE? Why is this failing at
> > all? I get that cpu id -> node id mapping changing messes up the
> > locali
On Thu, 10 Sep 2015, Tejun Heo wrote:
> > Why not just update node_data[]->node_zonelist in the first place?
> > Also, what's the synchronization rule here? How are allocators
> > synchronized against node hot [un]plugs?
>
> Also, shouldn't kmalloc_node() or any public allocator fall back
> autom
(cc'ing Christoph Lameter)
On Thu, Sep 10, 2015 at 03:29:35PM -0400, Tejun Heo wrote:
> Hello,
>
> On Thu, Sep 10, 2015 at 12:27:45PM +0800, Tang Chen wrote:
> > diff --git a/include/linux/gfp.h b/include/linux/gfp.h
> > index ad35f30..1a1324f 100644
> > --- a/include/linux/gfp.h
> > +++ b/includ
Hello,
On Thu, Sep 10, 2015 at 12:27:45PM +0800, Tang Chen wrote:
> diff --git a/include/linux/gfp.h b/include/linux/gfp.h
> index ad35f30..1a1324f 100644
> --- a/include/linux/gfp.h
> +++ b/include/linux/gfp.h
> @@ -307,13 +307,19 @@ static inline struct page *alloc_pages_node(int nid,
> gfp_t g
From: Gu Zheng
In the current kernel, all possible cpus are mapped to the best near online
node if they reside in a memory-less node in init_cpu_to_node().
init_cpu_to_node()
{
..
for_each_possible_cpu(cpu) {
..
if (!node_online(node))
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