Hi Christoph,
On Jan 23, 2008 1:18 AM, Christoph Lameter [EMAIL PROTECTED] wrote:
My patch is useless (fascinating history of the changelog there through).
fallback_alloc calls kmem_getpages without GFP_THISNODE. This means that
alloc_pages_node() will try to allocate on the current node but
On Wed, Jan 23, Pekka Enberg wrote:
Hi Christoph,
On Jan 23, 2008 1:18 AM, Christoph Lameter [EMAIL PROTECTED] wrote:
My patch is useless (fascinating history of the changelog there through).
fallback_alloc calls kmem_getpages without GFP_THISNODE. This means that
alloc_pages_node()
On (23/01/08 08:58), Olaf Hering didst pronounce:
On Tue, Jan 22, Christoph Lameter wrote:
0xc00fe018 is in setup_cpu_cache
(/home/olaf/kernel/git/linux-2.6-numa/mm/slab.c:2111).
2106BUG_ON(!cachep-nodelists[node]);
2107
On Wed, Jan 23, Mel Gorman wrote:
Sorry this is dragging out. Can you post the full dmesg with loglevel=8 of the
following patch against 2.6.24-rc8 please? It contains the debug information
that helped me figure out what was going wrong on the PPC64 machine here,
the revert and the !l3 checks
On Wed, Jan 23, Olaf Hering wrote:
On Wed, Jan 23, Mel Gorman wrote:
Sorry this is dragging out. Can you post the full dmesg with loglevel=8 of
the
following patch against 2.6.24-rc8 please? It contains the debug information
that helped me figure out what was going wrong on the PPC64
On (23/01/08 13:14), Olaf Hering didst pronounce:
On Wed, Jan 23, Mel Gorman wrote:
Sorry this is dragging out. Can you post the full dmesg with loglevel=8 of
the
following patch against 2.6.24-rc8 please? It contains the debug information
that helped me figure out what was going wrong
On (22/01/08 12:11), Christoph Lameter didst pronounce:
On Tue, 22 Jan 2008, Mel Gorman wrote:
Christoph/Pekka, this patch is papering over the problem and something
more fundamental may be going wrong. The crash occurs because l3 is NULL
and the cache is kmem_cache so this is early in
On Tue, 22 Jan 2008, Mel Gorman wrote:
After you reverted the slab memoryless node patch there should be per node
structures created for node 0 unless the node is marked offline. Is it? If
so then you are booting a cpu that is associated with an offline node.
I'll roll a patch that
On Tue, Jan 22, Mel Gorman wrote:
http://www.csn.ul.ie/~mel/postings/slab-20080122/partial-revert-slab-changes.patch
.. Can you please check on your machine if it fixes your problem?
It does not fix or change the nature of the crash.
Olaf, please confirm whether you need the patch below as
On 1/22/08, Olaf Hering [EMAIL PROTECTED] wrote:
On Tue, Jan 22, Mel Gorman wrote:
http://www.csn.ul.ie/~mel/postings/slab-20080122/partial-revert-slab-changes.patch
.. Can you please check on your machine if it fixes your problem?
It does not fix or change the nature of the crash.
On Tue, 22 Jan 2008, Olaf Hering wrote:
It crashes now in a different way if the patch below is applied:
Yup no l3 structure for the current node. We are early in boostrap. You
could just check if the l3 is there and if not just skip starting the
reaper? This will be redone later anyways. Not
On (22/01/08 13:34), Christoph Lameter didst pronounce:
On Tue, 22 Jan 2008, Mel Gorman wrote:
After you reverted the slab memoryless node patch there should be per
node
structures created for node 0 unless the node is marked offline. Is it?
If
so then you are booting a cpu
On Tue, 22 Jan 2008, Mel Gorman wrote:
Whatever this was a problem fixed in the past or not, it's broken again
now
:( . It's possible that there is a __GFP_THISNODE that can be dropped
early
at boot-time that would also fix this problem in a way that doesn't
affect runtime
On (22/01/08 14:57), Christoph Lameter didst pronounce:
On Tue, 22 Jan 2008, Mel Gorman wrote:
Whatever this was a problem fixed in the past or not, it's broken again
now
:( . It's possible that there is a __GFP_THISNODE that can be dropped
early
at boot-time that would
On Wed, 23 Jan 2008, Pekka Enberg wrote:
When we call fallback_alloc() because the current node has -nodelists set to
NULL, we end up calling kmem_getpages() with -1 as the node id which is then
translated to numa_node_id() by alloc_pages_node. But the reason we called
fallback_alloc() in the
Hi,
Mel Gorman wrote:
Faulting instruction address: 0xc03c8c00
cpu 0x0: Vector: 300 (Data Access) at [c05c3840]
pc: c03c8c00: __lock_text_start+0x20/0x88
lr: c00dadec: .cache_grow+0x7c/0x338
sp: c05c3ac0
msr: 80009032
dar:
On Tue, 22 Jan 2008, Mel Gorman wrote:
Rather it should be 2. I'll admit the physical setup of this machine is
less than ideal but clearly it's something that can happen even if
it's a bad idea.
Ok. Lets hope that Pekka's find does the trick. But this would mean that
fallback gets
On Tue, 22 Jan 2008, Christoph Lameter wrote:
But I doubt that this is it. The fallback logic was added later and it
worked fine.
My patch is useless (fascinating history of the changelog there through).
fallback_alloc calls kmem_getpages without GFP_THISNODE. This means that
On Tue, Jan 22, Christoph Lameter wrote:
0xc00fe018 is in setup_cpu_cache
(/home/olaf/kernel/git/linux-2.6-numa/mm/slab.c:2111).
2106BUG_ON(!cachep-nodelists[node]);
2107
On Fri, 18 Jan 2008, Christoph Lameter wrote:
Memoryless nodes: Set N_NORMAL_MEMORY for a node if we do not support HIGHMEM
If !CONFIG_HIGHMEM then
enum node_states {
#ifdef CONFIG_HIGHMEM
N_HIGH_MEMORY, /* The node has regular or high memory */
#else
N_HIGH_MEMORY =
On 1/18/08, Christoph Lameter [EMAIL PROTECTED] wrote:
Could you try this patch?
Memoryless nodes: Set N_NORMAL_MEMORY for a node if we do not support
HIGHMEM
It seems that we only scan through zones to set N_NORMAL_MEMORY only if
CONFIG_HIGHMEM and CONFIG_NUMA are set. We need to set
Could you try this patch?
Memoryless nodes: Set N_NORMAL_MEMORY for a node if we do not support HIGHMEM
It seems that we only scan through zones to set N_NORMAL_MEMORY only if
CONFIG_HIGHMEM and CONFIG_NUMA are set. We need to set N_NORMAL_MEMORY
in the !CONFIG_HIGHMEM case.
Signed-off-by:
On (18/01/08 10:47), Christoph Lameter didst pronounce:
On Thu, 17 Jan 2008, Olaf Hering wrote:
early_node_map[1] active PFN ranges
1:0 - 892928
Could not find start_pfn for node 0
Corrupted min_pfn?
Doubtful. Node 0 has no memory but it is still being initialised.
Hi Olaf,
[Adding Christoph as cc.]
On Jan 15, 2008 5:09 PM, Olaf Hering [EMAIL PROTECTED] wrote:
Current linus tree crashes in kmem_cache_init, as shown below. The
system is a 8cpu 2.2GHz POWER5 system, model 9117-570, with 4GB ram.
Firmware is 240_332, 2.6.23 boots ok with the same config.
On Thu, 17 Jan 2008, Pekka Enberg wrote:
Looks similar to the one discussed on linux-mm ([BUG] at
mm/slab.c:3320 thread). Christoph?
Right. Try the latest version of the patch to fix it:
Index: linux-2.6/mm/slab.c
===
---
On Thu, Jan 17, Christoph Lameter wrote:
On Thu, 17 Jan 2008, Pekka Enberg wrote:
Looks similar to the one discussed on linux-mm ([BUG] at
mm/slab.c:3320 thread). Christoph?
Right. Try the latest version of the patch to fix it:
The patch does not help.
Index: linux-2.6/mm/slab.c
Could you try Pekka's suggestion of reverting
04231b3002ac53f8a64a7bd142fde3fa4b6808c6 ?
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On Thu, Jan 17, Christoph Lameter wrote:
freeing bootmem node 1
Memory: 3496632k/3571712k available (6188k kernel code, 75080k reserved,
1324k data, 1220k bss, 304k init)
cache_grow(2781) swapper(0):c0,j4294937299 cp c06a4fb8 !l3
Is there more backtrace information? What
On Thu, 17 Jan 2008, Olaf Hering wrote:
The patch does not help.
Duh. We need to know more about the problem.
--- linux-2.6.orig/mm/slab.c2008-01-03 12:26:42.0 -0800
+++ linux-2.6/mm/slab.c 2008-01-09 15:59:49.0 -0800
@@ -2977,7 +2977,10 @@ retry:
}
On Thu, Jan 17, Olaf Hering wrote:
Since -mm boots further, what patch should I try?
rc8-mm1 crashes as well, l3 passed to reap_alien() is NULL.
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On Thu, Jan 17, Christoph Lameter wrote:
On Thu, 17 Jan 2008, Olaf Hering wrote:
The patch does not help.
Duh. We need to know more about the problem.
cache_grow is called from 3 places. The third call has cleared l3 for
some reason.
Allocated 00a0 bytes for kernel @ 0020
Current linus tree crashes in kmem_cache_init, as shown below. The
system is a 8cpu 2.2GHz POWER5 system, model 9117-570, with 4GB ram.
Firmware is 240_332, 2.6.23 boots ok with the same config.
There is a series of mm related patches in 2.6.24-rc1:
commit
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