| |
> | |---[def_child]
> | | |
> | | |
> | | |----
> | | |
>
> Note that user cannot create subdirectories under def_child with this
> scheme! I am also not sure what impact this
ore levels?
>
Yes, Dhaval nad Vatsa are looking at removing that limitation.
This discussion is a side-effect of the multi-hierarchy
discussion/implementation.
> Paul
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node boundaries, we need to set the new node online.
Signed-off-by: Balbir Singh <[EMAIL PROTECTED]>
---
arch/powerpc/mm/numa.c | 66 ++---
1 file changed, 63 insertions(+), 3 deletions(-)
diff -puN arch/powerpc/mm/numa.c~fakenumappc arch/powerpc
m/pgtable_32.c:302: error: too few arguments to function `pmd_free'
>
> I have tested the patch for the build failure only.
>
> Signed-off-by: Kamalesh Babulal <[EMAIL PROTECTED]>
Looks good to me, it seems like a conflict between origin.patch and
add-mm-argument-to-pte-pmd-pud
h is used as
the basis by the OOM killer. I need to read/understand the code a bit more.
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with no node 3, num_online_nodes 1
in the bootlog. Kamalesh verified that the problem exists with both slub and
slab.
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On Tue, Oct 23, 2012 at 9:05 AM, Qiang Gao wrote:
> information about the system is in the attach file "information.txt"
>
> I can not reproduce it in the upstream 3.6.0 kernel..
>
> On Sat, Oct 20, 2012 at 12:04 AM, Michal Hocko wrote:
>> On Wed 17-10-12 18:23:34, gaoqiang wrote:
>>> I looked up
On Tue, Oct 23, 2012 at 3:45 PM, Michal Hocko wrote:
> On Tue 23-10-12 18:10:33, Qiang Gao wrote:
>> On Tue, Oct 23, 2012 at 5:50 PM, Michal Hocko wrote:
>> > On Tue 23-10-12 15:18:48, Qiang Gao wrote:
>> >> This process was moved to RT-priority queue when global oom-killer
>> >> happened to boos
ivers/net/e1000e/netdev.c:2459 (set (reg:DI 487 [
D.34076 ])
(mem/s/j:DI (plus:SI (reg/v/f:SI 11 %o3 [orig:492 adapter ] [492])
(reg:SI 7 %g7 [514])) [0 .stats.gprc+0 S8 A128])) 45
{*movdi_insn_sp32} (insn_list:REG_DEP_TRUE 65 (insn_list:REG_DEP_ANTI 32 (nil)))
(exp
e Oprofile output for
the run? The exact commandline and .config being used would also help.
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Ingo, could you also please consider the KVM build fix at
http://marc.info/?l=linux-kernel&m=120262794315024&w=2 which has been
acked by Avi. I suspect this patch should be route through git-x86
since it affects arch/x86/Kconfig.
Balbir
PS: Modified cc's to reduce the noise.
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Avi Kivity wrote:
> Ingo Molnar wrote:
>> * Balbir Singh <[EMAIL PROTECTED]> wrote:
>>
>>
>>> Ingo, could you also please consider the KVM build fix at
>>> http://marc.info/?l=linux-kernel&m=120262794315024&w=2 which has been
>>> acke
?
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Please read
://sourceware.org/glibc/wiki/FAQ - "Even statically
linked programs need some shared libraries which is not acceptable for
me. What can I do?" Probably, worth trying.
Balbir Singh
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On Fri, Nov 2, 2012 at 8:06 PM, Vivek Goyal wrote:
> On Fri, Nov 02, 2012 at 07:59:15PM +0530, Balbir Singh wrote:
>> On Fri, Nov 2, 2012 at 6:53 PM, Vivek Goyal wrote:
>> > On Thu, Nov 01, 2012 at 02:52:25PM +, Matthew Garrett wrote:
>> >> On Thu, Nov 01, 2
On Mon, Oct 22, 2012 at 7:46 AM, Qiang Gao wrote:
> I don't know whether the process will exit finally, bug this stack lasts
> for hours, which is obviously unnormal.
> The situation: we use a command calld "cglimit" to fork-and-exec the worker
> process,and the "cglimit" will
> set some limitat
On Mon, Jun 3, 2013 at 3:48 PM, Michal Hocko wrote:
> Hi,
>
> This is the fourth version of the patchset.
>
> Summary of versions:
> The first version has been posted here:
> http://permalink.gmane.org/gmane.linux.kernel.mm/97973
> (lkml wasn't CCed at the time so I cannot find it in lwn.net
> ar
is
> active also for the targeted (aka limit) reclaim.
>
> Does this help?
>
Yes. What are the limitations of no-priority 0 reclaim? I'll also look
at the patches
Thanks,
Balbir Singh.
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the bo
text identifies
> the information it contains by LSM:
>
> smack='Pop'selinux='system_u:object_r:etc_r:s0'
>
> A security context without the LSM identifying lsm='' gets
> passed through to all of the LSMs that use a security context. This
> ma
exist only on the hierarchy
> with memcg attached to it. While this change is visible to userland,
> it is unlikely to be noticeable as the file has never been meaningful
> outside memcg.
>
Tejun, I think the framework was designed to be flexible. Do you see
cgroup subsystems never u
On Thu, Aug 1, 2013 at 10:51 PM, Casey Schaufler wrote:
> On 7/31/2013 7:48 PM, Balbir Singh wrote:
>> On Thu, Jul 25, 2013 at 11:52 PM, Casey Schaufler
>> wrote:
>>> Subject: [PATCH v14 0/6] LSM: Multiple concurrent LSMs
>>>
>>> Version 14 of this p
On Tue, Aug 6, 2013 at 7:39 PM, Tejun Heo wrote:
> Hello, Balbir.
>
> On Tue, Aug 06, 2013 at 08:56:34AM +0530, Balbir Singh wrote:
>> [off-topic] Has the unified hierarchy been agreed upon? I did not
>> follow that thread
>
> I consider it agreed upon enough. There o
n
the system (are they running anything at the time of the benchmark)? Could you
turn off CONFIG_FAIR_USER_SCHED and turn on CONFIG_FAIR_GROUP_SCHED. I am going
to run some tests with 2.6.25-rc2 and Volanomark and see how that goes.
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Zhang, Yanmin wrote:
> On Mon, 2008-02-18 at 10:26 +0530, Balbir Singh wrote:
>> Zhang, Yanmin wrote:
>>>>> Did you have
>>>>> CONFIG_FAIR_USER_SCHED enabled in both cases?
>>>> Yes.
>>>>
>>>> CONFIG_FAIR_GR
Li Zefan wrote:
> - remove trailing " Bytes"s in the demonstration
> - remove section 4.4 (feature control_type has been removed)
> - fix reference section
>
> Signed-off-by: Li Zefan <[EMAIL PROTECTED]>
> Acked-by: KAMEZAWA Hiroyuki <[EMAIL PROTECTED]>
h_entry_safe_reverse. Not sure
why we can't bug on pc.
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More
Li Zefan wrote:
> Cgroup requires the subsystem to return negative error code on
> error in the create method.
>
> Signed-off-by: Li Zefan <[EMAIL PROTECTED]>
> Acked-by: KAMEZAWA Hiroyuki <[EMAIL PROTECTED]>
Acked-by: Balbir Singh <[EMAIL PROTECTED]>
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iroyuki <[EMAIL PROTECTED]>
>> pc is of type page_cgroup and we use list_for_each_entry_safe_reverse. Not
>> sure
>> why we can't bug on pc.
>
> pc is dereferenced before this VM_BUG_ON.
>
> YAMAMOTO Takashi
>
OK, so the VM_BUG_ON needs to move to an earlier loca
Li Zefan wrote:
> Balbir Singh wrote:
>> YAMAMOTO Takashi wrote:
>>>> Li Zefan wrote:
>>>>> No need for VM_BUG_ON(pc), since 'pc' is the list entry. This should
>>>>> be VM_BUG_ON(page).
>>>>>
>>>>> Sign
g mem_cgroup_isolate_pages(unsigned long
> nr_to_scan,
> if (scan >= nr_to_scan)
> break;
> page = pc->page;
> - VM_BUG_ON(!pc);
>
> if (unlikely(!PageLRU(page)))
> continue;
T
Li Zefan wrote:
> Paul Menage wrote:
>> On Feb 16, 2008 2:07 AM, Balbir Singh <[EMAIL PROTECTED]> wrote:
>>> Paul Menage wrote:
>>>
>>> Hi, Paul,
>>>
>>> Do we need to use a cgroup.api file? Why not keep up to date documentation
>>
On Feb 18, 2008 4:31 PM, Dhaval Giani <[EMAIL PROTECTED]> wrote:
> On Mon, Feb 18, 2008 at 04:19:33PM +0530, Dhaval Giani wrote:
> > Hi Ingo,
> >
> > I am running the sched-devel tree (at HEAD
> > 44e770a8750abc7e876076cda718b413bad9e654) and it is not looking good.
> >
> > I am running two "make -
* Balbir Singh <[EMAIL PROTECTED]> [2008-02-18 16:42:05]:
> Li Zefan wrote:
> > Paul Jackson wrote:
> >> Ok ... this would (I suspect, just from code reading, no bytes were
> >> harmed in actual testing of this) have a minor change to how white
> >>
* Balbir Singh <[EMAIL PROTECTED]> [2008-02-18 17:23:42]:
> Andreas Schwab wrote:
> > Balbir Singh <[EMAIL PROTECTED]> writes:
> >
> >> @@ -238,7 +238,7 @@ rmdir() if there are no tasks.
> >> The type of memory accounted by the cgroup can be limited
ee if I can debug it further.
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Peter Zijlstra wrote:
> On Mon, 2008-02-18 at 17:47 +0530, Balbir Singh wrote:
>> Hi,
>>
>> I was looking at the 45% regression reported by Yanmin, when while running
>> the
>> test, I ran into
>>
>> 1:mon> t
>> [c000e7677da0] c0
Peter Zijlstra wrote:
> On Mon, 2008-02-18 at 20:18 +0530, Balbir Singh wrote:
>
>>> Humm, the check that should have avoided that is:
>>>
>>> /*
>>> * Are we the only task in the tree?
>>> */
>>>
-add-soft-limit-documentation.patch
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Changelog v2
1. Remove memory controller specific comments from resource counters
The resource counter member limit is split into soft and hard limits.
The same locking rule apply for both limits.
Signed-off-by: Balbir Singh <[EMAIL PROTECTED]>
---
include/linux/res_counter.h
Add documentation for the soft limit feature.
Changelog v2 (Thanks to the review by Randy Dunlap)
1. Change several misuses of it's to its
2. Fix spelling errors and punctuation
Signed-off-by: Balbir Singh <[EMAIL PROTECTED]>
---
Documentation/controllers/memory
cgroup is
removed from the list when the cgroup is deleted.
The global list is protected with a read-write spinlock.
Signed-off-by: Balbir Singh <[EMAIL PROTECTED]>
---
mm/memcontrol.c | 33 -
1 file changed, 32 insertions(+), 1 deletion(-)
diff -
-by: Balbir Singh <[EMAIL PROTECTED]>
---
include/linux/memcontrol.h |9 +
include/linux/res_counter.h | 11 ++
include/linux/swap.h|4 +-
mm/memcontrol.c | 76
mm/page_alloc.c | 10 +
mm
Li Zefan wrote:
> Li Zefan 写道:
>> Balbir Singh wrote:
>>> A new configuration file called soft_limit_in_bytes is added. The parsing
>>> and configuration rules remain the same as for the limit_in_bytes user
>>> interface.
>>>
>>> A glob
Li Zefan wrote:
> Li Zefan 写道:
>> Balbir Singh wrote:
>>> A new configuration file called soft_limit_in_bytes is added. The parsing
>>> and configuration rules remain the same as for the limit_in_bytes user
>>> interface.
>>>
>>> A glob
che misses because struct page on many 64bit
> + systems will not fit into a single cache line anymore.
> +
> + Only enable when you're ok with these trade offs and really
> + sure you need the memory controller.
> +
Looks good
Acked-by: Balbir Singh &l
ences, specially reference [1] contains a lot of details on limits,
guarantees, etc. Since they've been documented in the past on lkml, I decided
to keep them out of the documentation and mention them as references. If it's
going to help to add that terminology; I can create another doc
John Stoffel wrote:
>>>>>> "Jan" == Jan Engelhardt <[EMAIL PROTECTED]> writes:
>
> Jan> On Feb 20 2008 20:50, Balbir Singh wrote:
>>> John Stoffel wrote:
>>>> I know this is a pedantic comment, but why the heck is it called such
&
Nick Piggin wrote:
> On Wednesday 20 February 2008 23:52, Balbir Singh wrote:
>> Andi Kleen wrote:
>>> Document huge memory/cache overhead of memory controller in Kconfig
>>>
>>> I was a little surprised that 2.6.25-rc* increased struct page for the
>>>
nmin (http://lkml.org/lkml/2008/2/13/128)
Comments?
Signed-off-by: Balbir Singh <[EMAIL PROTECTED]>
---
kernel/sched.c |7 +++
kernel/sched_fair.c | 30 +++---
2 files changed, 26 insertions(+), 11 deletions(-)
diff -puN kernel/sched.c~make-sched-yield-fai
ry models. I'd say it will be the fastest way to get a prototype
>
> running.
>
OK, I'll explore and prototype the radix tree based approach and see how that
goes.
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Ingo Molnar wrote:
> * Balbir Singh <[EMAIL PROTECTED]> wrote:
>
>> __pick_last_entity() walks the entire tree on O(lgn) time to find the
>> rightmost entry. This patch makes the routine more efficient by
>> reducing the cost of the lookup
>
> hm, i&#x
KAMEZAWA Hiroyuki wrote:
> On Wed, 20 Feb 2008 21:45:13 +0530
> Balbir Singh <[EMAIL PROTECTED]> wrote:
>
>>> But for computers, limits is an expected and understood term, and for
>>> filesystems it's quotas. So in this case, I *still* think you shou
Ingo Molnar wrote:
> * Balbir Singh <[EMAIL PROTECTED]> wrote:
>
>> I disagree. The cost is only adding a field to cfs_rq [...]
>
> wrong. The cost is "only" of adding a field to cfs_rq and _updating it_,
> in the hottest paths of the scheduler:
Peter Zijlstra wrote:
> On Thu, 2008-02-21 at 13:09 +0530, Balbir Singh wrote:
>
>> sched_yield() is supported API
>
> For SCHED_FIFO/SCHED_RR.
>
>> and also look at http://lkml.org/lkml/2007/9/19/351.
>
> Read on (http://lkml.org/lkml/2007/9/19/371) a
Ingo Molnar wrote:
> * Balbir Singh <[EMAIL PROTECTED]> wrote:
>
>> If you insist that sched_yield() is bad, I might agree, but how does
>> my patch make things worse. [...]
>
> it puts new instructions into the hotpath.
>
>> [...] In my benchmarks, it
Ingo Molnar wrote:
> * Balbir Singh <[EMAIL PROTECTED]> wrote:
>
You did not answer some of my earlier questions.
>> I have an alternate approach in mind (that I need to find time for),
>> threaded-rbtrees. Walking the tree is really efficient, specially
>&g
Peter Zijlstra wrote:
> On Thu, 2008-02-21 at 15:01 +0530, Balbir Singh wrote:
>
>> I have an alternate approach in mind (that I need to find time for),
>> threaded-rbtrees. Walking the tree is really efficient, specially finding
>> successor of a node.
>
> Threa
Peter Zijlstra wrote:
> On Thu, 2008-02-21 at 15:12 +0530, Balbir Singh wrote:
>> Peter Zijlstra wrote:
>>> On Thu, 2008-02-21 at 15:01 +0530, Balbir Singh wrote:
>>>
>>>> I have an alternate approach in mind (that I need to find time for),
>>&g
hrottled checks for zone_watermark_ok(), that will not work
in the case that we are reclaiming from a cgroup which over it's limit. We need
a different check, to see if the mem_cgroup is still over it's limit or not.
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Linux Technology
Balbir Singh wrote:
> Ingo Molnar wrote:
>> * Balbir Singh <[EMAIL PROTECTED]> wrote:
>>
>>> If you insist that sched_yield() is bad, I might agree, but how does
>>> my patch make things worse. [...]
>> it puts new instructions into the hotpath.
>
Andi Kleen wrote:
> Nick Piggin wrote:
>> On Wednesday 20 February 2008 23:52, Balbir Singh wrote:
>>> Andi Kleen wrote:
>>>> Document huge memory/cache overhead of memory controller in Kconfig
>>>>
>>>> I was a little surprised that 2.6.25-rc
group so much.
> What do i use function, instead?
One option could be that once the memory controller has this feature, we'll need
no changes in try_to_free_mem_cgroup_pages.
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Peter Zijlstra wrote:
> On Thu, 2008-02-21 at 15:37 +0530, Balbir Singh wrote:
>
>> You use the empty pointer (missing right child), so why do we need a list.
>> May
>> be I am missing something.
>
> A fully threaded tree also has back-pointer to traverse b
Mike Galbraith wrote:
> Hi,
>
> On Thu, 2008-02-21 at 15:01 +0530, Balbir Singh wrote:
>> Ingo Molnar wrote:
>>> * Balbir Singh <[EMAIL PROTECTED]> wrote:
>>>
>>>> If you insist that sched_yield() is bad, I might agree, but how does
>
with cgroups
> + depends on CGROUPS
> +
> +config CGROUP_MEM_CONT
> + bool "Memory controller for cgroups"
> + depends on CGROUPS && RESOURCE_COUNTERS
> + help
> + Provides a memory controller that manages both page cache and
> +
Jens Axboe wrote:
> On Thu, Feb 21 2008, Jens Axboe wrote:
>> On Thu, Feb 21 2008, Peter Zijlstra wrote:
>>> On Thu, 2008-02-21 at 15:37 +0530, Balbir Singh wrote:
>>>
>>>> You use the empty pointer (missing right child), so why do we need a list.
>>
nt(), can we make it u64(). Integers are 32
bit on both ILP32 and LP64, but we really read/write 64 bit values.
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c chunk is not node aware, if all the
pages come from the same node, we have a penalty to pay in a NUMA system.
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KAMEZAWA Hiroyuki wrote:
> On Thu, 21 Feb 2008 16:33:33 +0530
> Balbir Singh <[EMAIL PROTECTED]> wrote:
>
>>> Another issue is that it will slightly increase TLB/cache
>>> cost of the memory controller, but I think that would be a fair
>>> trade of
cates existing code. This functionality can be easily
obtained using rb_last(). Avoid code duplication by using rb_last()
Signed-off-by: Balbir Singh <[EMAIL PROTECTED]>
---
kernel/sched_fair.c | 15 ++-
1 file changed, 6 insertions(+), 9 deletions(-)
diff -puN kernel/sched
Andi Kleen wrote:
> Balbir Singh wrote:
>> Andi Kleen wrote:
>>>> 1. We could create something similar to mem_map, we would need to handle 4
>>> 4? At least x86 mainline only has two ways now. flatmem and vmemmap.
>>>
>>>> different ways of creat
better..
Do we have a per zone RSS per task? I don't remember seeing it.
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The KVM configuration is no longer visible in the latest git tree. It looks
like it is selected by HAVE_SETUP_PER_CPU_AREA. I've moved HAVE_KVM to
under CONFIG_X86. Hopefully, this is the right fix.
Comments?
Signed-off-by: Balbir Singh <[EMAIL PROTECTED]>
---
arch/x86/Kconfig |
On Feb 10, 2008 2:29 AM, Dave Hansen <[EMAIL PROTECTED]> wrote:
> Current git for me (b1d0e4f535e10775cffde922208b49629169aeaa) doesn't
> let me build KVM. In fact, I don't seem to have *ANY* kvm-related
> symbols in my .config at all.
>
> I've verified that arch/x86/kvm/Kconfig was getting run by
Andi Kleen wrote:
> On Fri, Feb 22, 2008 at 05:44:47PM +0530, Balbir Singh wrote:
>> My concern with all the points you mentioned is that this solution might
>> need to
>> change again,
>
> No why would it need to change again?
>
>> depending on the factors
Andrew Morton wrote:
> On Fri, 22 Feb 2008 09:59:41 +0530 Balbir Singh <[EMAIL PROTECTED]> wrote:
>
>> [EMAIL PROTECTED] wrote:
>>> Update the memory controller to use read_uint for its
>>> limit/usage/failcnt control files, calling the new
>>> res_cou
bered asking for a external data structure for
> this.
>
> It's also quite unobvious that a innocent looking Kconfig option with a
> single line Kconfig description has such a negative effect.
>
> This patch attempts to document these disadvantages at least so that user
Andrew Morton wrote:
> On Sat, 23 Feb 2008 06:33:34 -0800 "Paul Menage" <[EMAIL PROTECTED]> wrote:
>
>> On Thu, Feb 21, 2008 at 8:29 PM, Balbir Singh <[EMAIL PROTECTED]> wrote:
>>> Looks good, except for the name uint(), can we make it u64(). Integers
Controller on and
off.
Signed-off-by: Balbir Singh <[EMAIL PROTECTED]>
---
Documentation/controllers/memory.txt |8 ++--
include/linux/cgroup_subsys.h|2 +-
include/linux/memcontrol.h |4 ++--
include/linux/mm_types.h |4 ++--
init/K
resource controller specific files.
Signed-off-by: Balbir Singh <[EMAIL PROTECTED]>
---
Documentation/kernel-parameters.txt |2 ++
mm/memcontrol.c | 33 -
2 files changed, 34 insertions(+), 1 deletion(-)
diff -L mm/memcontrol.h -pu
Paul Menage wrote:
> On Mon, Feb 25, 2008 at 3:55 AM, Balbir Singh <[EMAIL PROTECTED]> wrote:
>>
>> A boot option for the memory controller was discussed on lkml. It is a good
>> idea to add it, since it saves memory for people who want to turn off the
>> mem
Paul Menage wrote:
> On Mon, Feb 25, 2008 at 9:18 AM, Balbir Singh <[EMAIL PROTECTED]> wrote:
>> I thought about it, but it did not work out all that well. The reason being,
>> that the memory controller is called in from places besides cgroup.
>> mem_cgroup_cha
The memory controller has a requirement that while writing values, we need
to use echo -n. This patch fixes the problem and makes the UI more consistent.
Signed-off-by: Balbir Singh <[EMAIL PROTECTED]>
---
Documentation/controllers/memory.txt |6 +++---
kernel/res_cou
Andrew Morton wrote:
> On Mon, 25 Feb 2008 23:57:46 +0530 Balbir Singh <[EMAIL PROTECTED]> wrote:
>
>> The memory controller has a requirement that while writing values, we need
>> to use echo -n. This patch fixes the problem and makes the UI more
>> consistent.
&g
Just FYI:
I remember posting something a few days ago to make the serial console more
reliable for such situations. Some allocations in the serial port driver are
done at runtime using page_alloc, if somebody runs out of memory the serial
tty driver would not work properly.
I am not saying that
y if this calclation can be following later.
> ==
> if (scan_global_lru(sc)) {
> get_scan_ratio(zone, sc, percent);
> } else {
> get_scan_ratio_cgroup(sc->cgroup, sc, percent);
> }
> ==
> To do this,
> mem_cgroup needs to have recent_rotated_file and recent_rolated
Hi, Andrew,
We tried the following, generated stabs information. The size of struct
device is 560 bytes. We found that dead code was not being eliminated
(__you_cannot_kmalloc_that_much), even though no one called that
function. I suspect builtin_constant_p() and dead code elimination as
the root causes o
On Jan 9, 2008 12:52 PM, Rishikesh K. Rajak <[EMAIL PROTECTED]> wrote:
>
> Hi All,
>
> You can find the code coverage data for container code which has been
> merged with mainline linux-2.6.23 and respective testcases are merged with
> ltp for the feature called SYSVIPC NAMESPACE & UTS NAMESPACE
On Jan 9, 2008 2:45 PM, Subrata Modak <[EMAIL PROTECTED]> wrote:
>
> On Wed, 2008-01-09 at 14:38 +0530, Balbir Singh wrote:
> > On Jan 9, 2008 12:52 PM, Rishikesh K. Rajak <[EMAIL PROTECTED]> wrote:
> > >
> > > Hi All,
> > >
> > > You
t PageActive(pc->page))
>
Yes, correct. A page active on the node's zone LRU need not be active
in the memory cgroup.
> ANON <-> FILE attribute can be changed dinamically (after added to LRU) ?
>
> If no, using page_file_cache(pc->page) will be easy.
>
> Thanks
* KAMEZAWA Hiroyuki <[EMAIL PROTECTED]> [2008-01-10 11:36:18]:
> On Thu, 10 Jan 2008 07:51:33 +0530
> Balbir Singh <[EMAIL PROTECTED]> wrote:
>
> > > > #define PAGE_CGROUP_FLAG_CACHE (0x1) /* charged as cache */
> > > > #define PAGE_CGROUP
N_ERR "HVCS: Kobject of open"
> - " hvcs doesn't exist.\n");
> - return -EFAULT; /* Is this the right return value? */
> - }
> + kref_get(&hvcsd->kref);
> + spin_unlock_irqrestore(&hvcsd->lock, f
ran some tests with the fixed up version of this patch and the system
fails to come up.
I see the WARN_ON in lib/kref.c:33 and the system fails to boot beyond
that point. I have not yet found time to debug it though.
--
Warm Regards,
Balbir Singh
Linux Technology Center
Badari Pulavarty wrote:
> On Fri, 2007-12-07 at 00:28 +0530, Balbir Singh wrote:
>> Greg KH wrote:
>>
>>>> Why release the spinlock here? It's done after the count is incremented.
>>>> This patch does not seem correct.
>>> Doh, you are corre
Arnd Bergmann wrote:
> On Friday 07 December 2007, Balbir Singh wrote:
>> Here's a dumb simple implementation of fake NUMA nodes for PowerPC. Fake
>> NUMA nodes can be specified using the following command line option
>>
>> numa=fake=
>>
>> node rang
Arnd Bergmann wrote:
> On Friday 07 December 2007, Balbir Singh wrote:
>> Balbir Singh wrote:
>>> Geert Uytterhoeven wrote:
>>>> On Sat, 8 Dec 2007, Balbir Singh wrote:
>>>>> + if (strstr(p, "fake="))
>>>>> + cmdl
David Rientjes wrote:
> On Sat, 8 Dec 2007, Balbir Singh wrote:
>
>> Yes, they all appear on node 0. We could have tweaks to distribute CPU's
>> as well.
>>
>
> You're going to want to distribute the cpu's based on how they match up
> physically
David Rientjes wrote:
> On Sat, 8 Dec 2007, Balbir Singh wrote:
>
>> To be able to test the memory controller under NUMA, I use fake NUMA
>> nodes. x86-64 has a similar feature, the code I have here is the
>> simplest I could come up with for PowerPC.
>>
>
>
Comments are as always welcome!
Signed-off-by: Balbir Singh <[EMAIL PROTECTED]>
---
arch/powerpc/mm/numa.c | 59 -
1 file changed, 54 insertions(+), 5 deletions(-)
diff -puN arch/powerpc/mm/numa.c~ppc-fake-numa-easy arch/powerpc/mm/numa.c
---
Kumar Gala wrote:
>
> On Dec 7, 2007, at 4:12 PM, Balbir Singh wrote:
>
>> Kumar Gala wrote:
>>>
>>> On Dec 7, 2007, at 3:35 PM, Balbir Singh wrote:
>>>
>>>> Olof Johansson wrote:
>>>>> Hi,
>>>>>
>>>
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