Processor Home Node
(VPHN) capabilities information provided by the pHyp. The VPHN handling
in Linux is disabled, if PRRN handling is present.
Signed-off-by: Michael Bringmann
Michael Bringmann (2):
powerpc/hotplug: Add option to define max nodes allowing dynamic
growth of resources.
powe
will read this value and use it to ensure
that all of the desired nodes are setup in the 'node_possible_map', and
elsewhere.
Signed-off-by: Michael Bringmann
---
---
arch/powerpc/mm/numa.c | 31 +++
1 file changed, 31 insertions(+)
diff --git a/arch/powe
information provided by the pHyp.
Also, update initialization checks for device-tree attributes to
independently recognize PRRN or VPHN usage.
Signed-off-by: Michael Bringmann
---
Changes in V6:
-- Place extern of timed_topology_update() proto under additional #ifdef
for hotplug-cpu.
---
arch
One of the patches was doubled and sent twice yesterday.
Will update number regardless in future.
On 06/21/2017 04:54 AM, Michael Ellerman wrote:
> Michael Bringmann writes:
>
>> On Power systems with shared configurations of CPUs and memory, there
>> are some issues w
On 06/21/2017 04:52 AM, Michael Ellerman wrote:
> Michael Bringmann writes:
>
>> powerpc/hotplug: On systems like PowerPC which allow 'hot-add' of CPU
>> or memory resources, it may occur that the new resources are to be
>> inserted into nodes that were not
On 10/16/2017 07:54 AM, Michael Ellerman wrote:
> Michael Bringmann writes:
>
>> powerpc/hotplug: On systems like PowerPC which allow 'hot-add' of CPU,
>> it may occur that the new resources are to be inserted into nodes
>> that were not used for memory re
See below.
On 10/16/2017 07:33 AM, Michael Ellerman wrote:
> Michael Bringmann writes:
>
>> powerpc/nodes: On systems like PowerPC which allow 'hot-add' of CPU
>
> This is a powerpc-only patch, so saying "systems like PowerPC" is
> confusing. What yo
On 10/17/2017 12:02 PM, Nathan Fontenot wrote:
> On 10/17/2017 11:14 AM, Michael Bringmann wrote:
>> See below.
>>
>> On 10/16/2017 07:33 AM, Michael Ellerman wrote:
>>> Michael Bringmann writes:
>>>
>>>> powerpc/nodes: On systems like Pow
>> arch/powerpc/mm/numa.c |7 ---
>> 1 file changed, 7 deletions(-)
>>
>> diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
>> index 15c2dd5..18f3038 100644
>> --- a/arch/powerpc/mm/numa.c
>> +++ b/arch/powerpc/mm/numa.c
>> @@ -907,13 +907,6 @@ void __init initmem_init(void)
>>
I am running into this problem on PowerPC systems where Balbir's patch set
was targeted. So, yes, I do need to be able to add/enable a new numa node
during system execution in cases where more resources (memory, virtual
processors) are added to the system dynamically.
On 05/25/2017 10:46 PM, Mich
information provided by the pHyp. The VPHN handling
in Linux is disabled, if PRRN handling is present.
Signed-off-by: Michael Bringmann
---
Changes in V3:
-- Remove change unrelated to this patch
---
arch/powerpc/mm/numa.c | 19 ++-
arch/powerpc/platforms/pseries/dlpar.c
to subsequent DLPAR hotplug-memory operations,
even if they are not needed at boot time.
Signed-off-by: Michael Bringmann
---
Changes in V3:
-- Remove code not relevant to this defect.
---
arch/powerpc/mm/numa.c |7 ---
1 file changed, 7 deletions(-)
diff --git a/arch/powerpc/mm
to subsequent DLPAR hotplug-memory operations,
even if they are not needed at boot time.
Signed-off-by: Michael Bringmann
---
---
arch/powerpc/mm/numa.c |7 ---
1 file changed, 7 deletions(-)
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index afcee3f..49d5222 100644
information provided by the pHyp. The VPHN handling
in Linux is disabled, if PRRN handling is present.
Signed-off-by: Michael Bringmann
---
Changes in V4:
-- Fix conditional compile bug.
---
arch/powerpc/mm/numa.c | 19 ++-
arch/powerpc/platforms/pseries/dlpar.c |2
pseries/nodes: Ensure enough nodes avail for operations
pseries/initnodes: Ensure nodes initialized for hotplug
Signed-off-by: Michael Bringmann
Michael Bringmann (2):
pseries/nodes: Ensure enough nodes avail for operations
pseries/initnodes: Ensure nodes initialized for hotplug
ent. This patch fixes some problems encountered at
runtime with configurations that support memory-less nodes, or that
hot-add CPUs into nodes that are memoryless during system execution
after boot.
Signed-off-by: Michael Bringmann
---
Changes in V6:
-- Add some needed node initialization to ru
will be performed
to define or enable additional nodes.
Signed-off-by: Michael Bringmann
---
Changes in V6:
-- Remove some node initialization/allocation from boot setup
---
arch/powerpc/mm/numa.c | 40 +---
1 file changed, 37 insertions(+), 3 deletions(-
layers to reset the associativity of the blocks and any
other related data structures.
Signed-off-by: Michael Bringmann
Michael Bringmann (3):
powerpc/hotplug/memory: Apply assoc mem updates from 'ibm,dynamic-memory'
Post LPAR Migration
powerpc/hotplug/memory: Apply assoc lookup arr
ology migration requires us to compare the aa_index values of the
old/new properties and 'readd' any block for which the setting has
changed.
Signed-off-by: Michael Bringmann
---
arch/powerpc/platforms/pseries/hotplug-cpu.c| 64 +++
arch/powerpc/platforms/pserie
ology migration requires us to compare the 'aa_index'
values of the old/new properties and 'readd' any block for which the
setting has changed.
Signed-off-by: Michael Bringmann
---
arch/powerpc/include/asm/prom.h | 12 ++
arch/powerpc/platfo
structures.
In the process of the 're-add', the appropriate entry of the property
'ibm,dynamic-memory' would be updated as well as any other applicable
system data structures.
Signed-off-by: Michael Bringmann
---
arch/powerpc/platforms/pseries/hotplug-memory.c | 123 +++
From: Michael Bringmann
To: linuxppc-...@lists.ozlabs.org
To: linux-kernel@vger.kernel.org
Cc: Michael Bringmann
Cc: Nathan Fontenot
Cc: Michael Ellerman
Cc: John Allen
Subject: [PATCH V4 0/2] pseries/nodes: Fix issues with memoryless nodes
pseries/nodes: Ensure enough nodes avail for
pseries/nodes: Ensure enough nodes avail for operations
pseries/initnodes: Ensure nodes initialized for hotplug
Signed-off-by: Michael Bringmann
Michael Bringmann (2):
pseries/nodes: Ensure enough nodes avail for operations
pseries/initnodes: Ensure nodes initialized for hotplug
will be performed
to define or enable additional nodes.
Signed-off-by: Michael Bringmann
---
Changes in V5:
-- Remove unnecessary error check
---
arch/powerpc/mm/numa.c | 38 +++---
1 file changed, 35 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/mm/numa
ent. This patch fixes some problems encountered at
runtime with configurations that support memory-less nodes, or that
hot-add resources during system execution after boot.
Signed-off-by: Michael Bringmann
---
Changes in V5:
-- Reorganize code used to associatively map CPUs to nodes and
pseries/nodes: Ensure enough nodes avail for operations
pseries/findnodes: Find nodes with memory when booting memoryless nodes
pseries/initnodes: Ensure nodes initialized for hotplug
Signed-off-by: Michael Bringmann
Michael Bringmann (3):
pseries/nodes: Ensure enough nodes avail for
pology.h' to modules
that are allocating node-specific memory at boot, and allows such
references to find available memory in another node.
Signed-off-by: Michael Bringmann
---
block/blk-mq-cpumap.c |3 ++-
mm/page_alloc.c |1 +
2 files changed, 3 insertions(+), 1 deletion
will be performed
to define or enable additional nodes.
Signed-off-by: Michael Bringmann
---
arch/powerpc/mm/numa.c | 39 ---
1 file changed, 36 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index ec098b3..f885a
ent. This patch fixes some problems encountered at
runtime with configurations that support memory-less nodes, or that
hot-add resources during system execution after boot.
Signed-off-by: Michael Bringmann
---
arch/powerpc/mm/numa.c | 27 ---
1 file changed, 24 insert
-domains, and the compressed ibm,drc-info into the
platform-specific code for the Pseries features.
Signed-off-by: Michael W. Bringmann
Michael Bringmann (6):
powerpc:/drc Define interface to acquire arch-specific drc info
pseries/drcinfo: Fix bug parsing ibm,drc-info
pseries/drcinfo: Pseries
: Michael Bringmann
---
include/linux/topology.h |9 +
1 file changed, 9 insertions(+)
diff --git a/include/linux/topology.h b/include/linux/topology.h
index cb0775e..df97f5f 100644
--- a/include/linux/topology.h
+++ b/include/linux/topology.h
@@ -44,6 +44,15 @@
int
Replace use of of_prop_next_u32() in when parsing 'ibm,drc-info'
structure to simplify and reduce parsing code.
Signed-off-by: Michael Bringmann
Fixes: 3f38000eda48 ("powerpc/firmware: Add definitions for new drc-info
firmware feature" -- end of patch series applied to pow
arch_find_drc_match. All functions that were used just
to support the previous parsing implementation have been moved.
Signed-off-by: Michael Bringmann
---
drivers/pci/hotplug/rpaphp_core.c | 232 -
1 file changed, 28 insertions(+), 204 deletions(-)
diff --git a
pseries_energy.c and hotplug-cpu.c to use the common parser.
Changes include creating appropriate callback functions and
passing callback-specific data blocks into arch_find_drc_match.
Signed-off-by: Michael Bringmann
---
arch/powerpc/platforms/pseries/hotplug-cpu.c| 83 +++-
arch
: Michael Bringmann
---
arch/powerpc/include/asm/prom.h |3
arch/powerpc/platforms/pseries/of_helpers.c | 299 +++
include/linux/topology.h|2
3 files changed, 298 insertions(+), 6 deletions(-)
diff --git a/arch/powerpc/include/asm
; will incorrectly find the stale entry. Remove the node from the
>> cache.
>>
>> Add paranoia checks in of_find_node_by_phandle() as a second level
>> of defense (do not return cached node if detached, do not add node
>> to cache if detached).
>>
>> Reported-by
On 12/12/2018 08:57 PM, Michael Ellerman wrote:
> Frank Rowand writes:
>> On 12/11/18 8:07 AM, Rob Herring wrote:
>>> On Tue, Dec 11, 2018 at 7:29 AM Michael Ellerman
>>> wrote:
> ...
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 09692c9b32a7..d8e4534c0686 100644
--- a/
I have asked Scott Mayes to take a look at one of these crashes from
the phyp side. I will let you know if he finds anything notable.
Michael
On 12/07/2018 08:40 PM, Thiago Jung Bauermann wrote:
>
> Gautham R Shenoy writes:
>> On Fri, Dec 07, 2018 at 04:13:11PM +0530, Gautham R Shenoy wrote:
>
frowand.l...@gmail.com
> devicet...@vger.kernel.org
> linux-kernel@vger.kernel.org
Thanks.
>
> Michael Bringmann writes:
>> The PPC mobility code receives RTAS requests to delete nodes with
>> platform-/hardware-specific attributes when restarting the kernel
>> aft
--- Snip ---
>>
>> The mobility.c code continues on during the second migration, accepts
>> the definitions of the new nodes from the PHYP and ends up renaming
>> the new properties e.g.
>>
>> [ 4565.827296] Duplicate name in base, renamed to "ibm,platform-facilities#1"
>>
>> There is no check lik
associativity changes during the lifetime of a
system. These interfaces exchange the thread_index provided by the
'ibm,ppc-interrupt-server#s' properties, for an internal index to
be used by kernel scheduling interfaces.
Signed-off-by: Michael Bringmann
Michael Bringmann (3):
po
during the lifetime of a
system. These interfaces will be used entirely within the powerpc
kernel code to maintain separation between the machine and kernel
contexts.
Signed-off-by: Michael Bringmann
---
arch/powerpc/include/asm/topology.h | 31 +++
arch/powerpc/platforms/pseries
changes during the lifetime of a
system. These interfaces exchange the thread_index provided by the
'ibm,ppc-interrupt-server#s' properties, for an internal index to
be used by kernel scheduling interfaces.
Signed-off-by: Michael Bringmann
---
arch/powerpc/mm/numa.c
Add argument to allow caller to determine whether the node identified
for a cpu after an associativity / affinity change should be inited.
Signed-off-by: Michael Bringmann
---
arch/powerpc/include/asm/topology.h |2 +-
arch/powerpc/mm/numa.c |6
code from PHYP's H_SET_DR_STATE
h-call.
On 12/10/2018 02:31 PM, Thiago Jung Bauermann wrote:
>
> Hello Michael,
>
> Michael Bringmann writes:
>
>> I have asked Scott Mayes to take a look at one of these crashes from
>> the phyp side. I will let you know if he fin
2018
]
[Replace patch submission:
Subject: [PATCH] powerpc/topology: Update numa mask when cpu node mapping
changes
From: Srikar Dronamraju
Date: Wed Oct 10 15:24:46 AEDT 2018
]
Signed-off-by: Michael Bringmann
---
Changes in v03:
-- Fixed under-scheduling of topo updates.
Changes in v02:
-- Reuse mo
Adding Nathan Lynch
On 1/24/19 6:04 PM, Tyrel Datwyler wrote:
> On 12/14/2018 12:50 PM, Michael Bringmann wrote:
>> Define interface to acquire arch-specific drc info to match against
>> hotpluggable devices. The current implementation exposes several
>> pseries-sp
Adding Nathan Lynch.
Yes. We can amend the title.
On 1/24/19 6:04 PM, Tyrel Datwyler wrote:
> On 12/14/2018 12:51 PM, Michael Bringmann wrote:
>> This patch provides a common interface to parse ibm,drc-indexes,
>> ibm,drc-names, ibm,drc-types, ibm,drc-power-domains, or ibm,d
Adding Nathan Lynch.
On 1/24/19 6:10 PM, Tyrel Datwyler wrote:
> On 12/14/2018 12:50 PM, Michael Bringmann wrote:
>> Define interface to acquire arch-specific drc info to match against
>> hotpluggable devices. The current implementation exposes several
>> pseries-sp
Adding Nathan Lynch.
On 1/24/19 6:29 PM, Tyrel Datwyler wrote:
> On 01/14/2019 04:28 PM, Bjorn Helgaas wrote:
>> On Fri, Dec 14, 2018 at 02:51:31PM -0600, Michael Bringmann wrote:
>>> The implementation of the pseries-specific drc info properties
>>> is currently impl
On 1/25/19 10:09 AM, Michael Bringmann wrote:
> Adding Nathan Lynch
>
> On 1/24/19 6:04 PM, Tyrel Datwyler wrote:
>> On 12/14/2018 12:50 PM, Michael Bringmann wrote:
>>> Define interface to acquire arch-specific drc info to match against
>>> hotpluggable dev
To: linuxppc-...@lists.ozlabs.org
To: linux-kernel@vger.kernel.org
Benjamin Herrenschmidt
Paul Mackerras
Michael Ellerman
Nathan Lynch
Corentin Labbe
Tyrel Datwyler
Srikar Dronamraju
Guenter Roeck
Michael Bringmann
"Oliver O'Halloran"
Russell Currey
Haren Myneni
Al
count will still be decremented.
Signed-off-by: Michael Bringmann
diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c
b/arch/powerpc/platforms/pseries/hotplug-cpu.c
index 97feb6e..9537bb9 100644
--- a/arch/powerpc/platforms/pseries/hotplug-cpu.c
+++ b/arch/powerpc/platforms/pseries/hot
On 2/19/19 2:03 PM, Tyrel Datwyler wrote:
> On 02/19/2019 07:46 AM, Michael Bringmann wrote:
>> powerpc/pseries: Fix dn reference error in dlpar_cpu_remove_by_index()
>>
>> A reference to the device node of the CPU to be removed is released
>> upon successful removal o
On 1/29/19 3:31 AM, Michael Ellerman wrote:
> Tyrel Datwyler writes:
>> On 12/14/2018 12:50 PM, Michael Bringmann wrote:
>>> Define interface to acquire arch-specific drc info to match against
>>> hotpluggable devices. The current implementation exposes several
&
On 1/9/19 12:08 AM, Gautham R Shenoy wrote:
> I did some testing during the holidays. Here are the observations:
>
> 1) With just your patch (without any additional debug patch), if I run
> DLPAR on /off operations on a system that has SMT=off, I am able to
> see a crash involving RTAS stack corr
2018
]
[Replace patch submission:
Subject: [PATCH] powerpc/topology: Update numa mask when cpu node mapping
changes
From: Srikar Dronamraju
Date: Wed Oct 10 15:24:46 AEDT 2018
]
Signed-off-by: Michael Bringmann
---
Changes in v04:
-- Revise tests in topology_timer_fn to check vphn_enabled b
On 05/23/2017 04:49 PM, Reza Arbab wrote:
> On Tue, May 23, 2017 at 03:05:08PM -0500, Michael Bringmann wrote:
>> On 05/23/2017 10:52 AM, Reza Arbab wrote:
>>> On Tue, May 23, 2017 at 10:15:44AM -0500, Michael Bringmann wrote:
>>>> +static void setup_nodes(void)
&
On 05/23/2017 04:49 PM, Reza Arbab wrote:
> On Tue, May 23, 2017 at 03:05:08PM -0500, Michael Bringmann wrote:
>> On 05/23/2017 10:52 AM, Reza Arbab wrote:
>>> On Tue, May 23, 2017 at 10:15:44AM -0500, Michael Bringmann wrote:
>>>> +static void setup_nodes(void)
&
On 05/23/2017 03:10 PM, Tejun Heo wrote:
> Hello,
>
> On Tue, May 23, 2017 at 03:09:07PM -0500, Michael Bringmann wrote:
>> To confirm, you want the WARN_ON(cpumask_any(pool->attrs->cpumask) >=
>> NR_CPUS)
>> at the point where I place my current patch?
>
On 05/23/2017 03:10 PM, Tejun Heo wrote:
> Hello,
>
> On Tue, May 23, 2017 at 03:09:07PM -0500, Michael Bringmann wrote:
>> To confirm, you want the WARN_ON(cpumask_any(pool->attrs->cpumask) >=
>> NR_CPUS)
>> at the point where I place my current patch?
>
I will get a log based on the latest 4.12 kernel to show what happens
one way or the other, with this patch removed.
On 05/24/2017 09:36 AM, Reza Arbab wrote:
> On Tue, May 23, 2017 at 05:44:23PM -0500, Michael Bringmann wrote:
>> On 05/23/2017 04:49 PM, Reza Arbab wrote:
>>> On
On 05/24/2017 06:19 AM, Michael Ellerman wrote:
> Michael Bringmann writes:
>
>> On 05/23/2017 04:49 PM, Reza Arbab wrote:
>>> On Tue, May 23, 2017 at 03:05:08PM -0500, Michael Bringmann wrote:
>>>> On 05/23/2017 10:52 AM, Reza Arbab wrote:
>>>&
On 05/25/2017 01:19 AM, Michael Ellerman wrote:
> Michael Bringmann writes:
>
>> On 05/24/2017 06:19 AM, Michael Ellerman wrote:
>>> Michael Bringmann writes:
>>>>
>>>> With or without 3af229f2071f, we would still need to add something
created, attached, and woken up. If the mask is
not set up, then the kernel will crash when 'wakeup_process' is unable
to find a valid CPU to which to assign the new worker.
Signed-off-by: Michael Bringmann
---
Changes in V2:
-- Only fill in empty cpumasks.
---
kernel/workqueu
On 05/25/2017 10:10 AM, Reza Arbab wrote:
> On Thu, May 25, 2017 at 04:19:53PM +1000, Michael Ellerman wrote:
>> The commit message for 3af229f2071f says:
>>
>>In practice, we never see a system with 256 NUMA nodes, and in fact, we
>>do not support node hotplug on power in the first place
I will try that patch shortly. I also updated my patch to be conditional
on whether the pool's cpumask attribute was empty. You should have received
V2 of that patch by now.
As to your remark about 'proper subset of possible cpumask for the node',
would that not be the case when we are removing
information provided by the pHyp. The VPHN handling
in Linux is disabled, if PRRN handling is present.
Signed-off-by: Michael Bringmann
---
arch/powerpc/mm/numa.c | 19 ++-
arch/powerpc/platforms/pseries/dlpar.c |2 ++
arch/powerpc/platforms/pseries/hotplug
.
Signed-off-by: Michael Bringmann
---
Changes in V2:
-- Simplify patches to ensure more nodes in possible map, removing
code from PowerPC numa.c that constrained possible map to size
of online map.
---
arch/powerpc/mm/numa.c |7 ---
1 file changed, 7 deletions(-)
diff --git a/arch
/2017 03:10 PM, Tejun Heo wrote:
> Hello,
>
> On Tue, Jun 13, 2017 at 03:04:30PM -0500, Michael Bringmann wrote:
>> @@ -3564,19 +3564,28 @@ static struct pool_workqueue
>> *alloc_unbound_pwq(struct workqueue_struct *wq,
>> static bool wq_calc_node_cpumask(const struct
Processor Home Node
(VPHN) capabilities information provided by the pHyp. The VPHN handling
in Linux is disabled, if PRRN handling is present.
Signed-off-by: Michael Bringmann
Michael Bringmann (2):
powerpc/hotplug: Add option to define max nodes allowing dynamic
growth of resources.
powe
will read this value and use it to ensure
that all of the desired nodes are setup in the 'node_possible_map', and
elsewhere.
Signed-off-by: Michael Bringmann
---
---
arch/powerpc/mm/numa.c | 31 +++
1 file changed, 31 insertions(+)
diff --git a/arch/powe
information provided by the pHyp.
Also, update initialization checks for device-tree attributes to
independently recognize PRRN or VPHN usage.
Signed-off-by: Michael Bringmann
---
Changes in V8:
-- Fix a conditional compile bug.
---
arch/powerpc/include/asm/topology.h | 14 ++
arch
Hi Michael,
>
> Michael Bringmann writes:
>> pseries/findnodes: On pseries systems which allow 'hot-add' of
>
> This isn't a powerpc or pseries patch, so the subject/prefix is wrong.
>
> Also because you're changing generic code you need to provide an
&g
the VPHN
code from the NUMA code better, and move relevant functions to another
file.
Signed-off-by: Michael Bringmann
Michael Bringmann (3):
powerpc/numa: Update CPU topology when VPHN enabled
powerpc/nodes: Ensure enough nodes avail for operations
powerpc/vphn: Rearrange file contents for im
he instruction,
nodes_and(node_possible_map, node_possible_map, node_online_map);
presently seen in the function arch/powerpc/mm/numa.c:initmem_init().
If the property is not present at boot, no operation will be performed
to define or enable additional nodes.
Signed-off-by: Michael Bringmann
--
information provided by the pHyp.
Also, update initialization checks for device-tree attributes to
independently recognize PRRN or VPHN usage.
Signed-off-by: Michael Bringmann
---
Changes in V11:
-- Cleanup presentation of patch changes
---
arch/powerpc/include/asm/topology.h | 14
powerpc/vphn: Reorganize source code in order to better distinguish the
VPHN code from the NUMA code better, by moving relevant functions to
appropriate files.
Signed-off-by: Michael Bringmann
---
arch/powerpc/include/asm/topology.h|6
arch/powerpc/mm/numa.c | 550
.] This new setting will override
the instruction,
nodes_and(node_possible_map, node_possible_map, node_online_map);
presently seen in the function arch/powerpc/mm/numa.c:initmem_init().
If the property is not present at boot, no operation will be performed
to define or enable additional nodes.
Si
information provided by the pHyp.
Also, update initialization checks for device-tree attributes to
independently recognize PRRN or VPHN usage.
Finally, try to distinguish the VPHN code from the NUMA code better,
and move relevant functions to another file.
Signed-off-by: Michael Bringmann
---
Changes in
From: Michael Bringmann
To: linuxppc-...@lists.ozlabs.org
To: linux-kernel@vger.kernel.org
Cc: Michael Ellerman
Cc: Michael Bringmann
Cc: John Allen
Cc: Nathan Fontenot
Subject: [PATCH V10 2/2] powerpc/nodes: Ensure enough nodes avail for operations
powerpc/nodes: On systems like PowerPC
bootup. Many different configurations
of PowerPC resources may need to be supported depending upon the
environment. This patch fixes some problems encountered at runtime
with configurations that support memory-less nodes, but which allow
CPUs to be added at and after boot.
Signed-off-by: Michael
fine or enable additional nodes.
Signed-off-by: Michael Bringmann
---
arch/powerpc/mm/numa.c | 47 +++
1 file changed, 47 insertions(+)
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index ec098b3..b385cd0 100644
--- a/arch/powerp
nvironment. This patch fixes some problems encountered at
runtime with configurations that support memory-less nodes, but which
allow CPUs to be added at and after boot.
Signed-off-by: Michael Bringmann
---
arch/powerpc/mm/numa.c | 17 +++--
1 file changed, 15 insertions(+), 2
detected and configured sooner.
Also, fix an end-of-updates processing problem observed occasionally
in numa_update_cpu_topology().
Signed-off-by: Michael Bringmann
Michael Bringmann (4):
powerpc/vphn: Update CPU topology when VPHN enabled
powerpc/vphn: Improve recognition of PRRN/VPHN
: Michael Bringmann
---
Changes in V14:
-- Code cleanup to reduce patch sizes
---
arch/powerpc/mm/numa.c |8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 3ae031d..5f5ff46 100644
--- a/arch/powerpc/mm/numa.c
+++ b
the CPU.
Signed-off-by: Michael Bringmann
---
Changes in V14:
-- Cleanup some duplicate code. Change a trace stmt to debug.
---
arch/powerpc/mm/numa.c | 22 +-
1 file changed, 21 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
().
Signed-off-by: Michael Bringmann
---
Changes in V14:
-- More code cleanup
---
arch/powerpc/mm/numa.c | 10 --
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 32f5f8d..ec098b3 100644
--- a/arch/powerpc/mm/numa.c
+++ b
value to better ensure that the CPU topology is
detected and configured sooner.
Signed-off-by: Michael Bringmann
---
Changes in V14:
-- Restore accidentally deleted reset of topology timer.
---
arch/powerpc/include/asm/topology.h |8
arch/powerpc/mm/numa.c
detected and configured sooner.
Also, fix an end-of-updates processing problem observed occasionally
in numa_update_cpu_topology().
Signed-off-by: Michael Bringmann
---
Changes in V12:
-- Reorganize some of the updates to minimize kernel impact.
-- Improve documentation of this patch.
---
arch
detected and configured sooner.
Also, fix an end-of-updates processing problem observed occasionally
in numa_update_cpu_topology().
Signed-off-by: Michael Bringmann
Michael Bringmann (4):
powerpc/vphn: Update CPU topology when VPHN enabled
powerpc/vphn: Improve recognition of PRRN/VPHN
the CPU.
Signed-off-by: Michael Bringmann
---
Changes in V13:
-- Split patch for improved review
---
arch/powerpc/mm/numa.c | 31 ---
1 file changed, 28 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index b95c584
: Michael Bringmann
---
Changes in V13:
-- Split patch to improve review
---
arch/powerpc/mm/numa.c |6 --
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 312f6ee..c08d736 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch
value to better ensure that the CPU topology is
detected and configured sooner.
Signed-off-by: Michael Bringmann
---
arch/powerpc/include/asm/topology.h |8
arch/powerpc/mm/numa.c | 21 -
arch/powerpc/platforms/pseries/hotplug-cpu.c
().
Signed-off-by: Michael Bringmann
---
arch/powerpc/mm/numa.c |7 +++
1 file changed, 7 insertions(+)
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 3a5b334..fccf23f 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -1410,6 +1410,13 @@ int
On 09/06/2017 09:45 AM, Nathan Fontenot wrote:
> On 09/01/2017 10:48 AM, Michael Bringmann wrote:
>> powerpc/vphn: On Power systems with shared configurations of CPUs
>> and memory, there are some issues with the association of additional
>> CPUs and memory to nodes when
he instruction,
nodes_and(node_possible_map, node_possible_map, node_online_map);
presently seen in the function arch/powerpc/mm/numa.c:initmem_init().
If the property is not present at boot, no operation will be performed
to define or enable additional nodes.
Signed-off-by: Michael Br
To: linuxppc-...@lists.ozlabs.org
From: Michael Bringmann
To: linux-kernel@vger.kernel.org
Cc: Michael Ellerman
Cc: Michael Bringmann
Cc: John Allen
Cc: Nathan Fontenot
Subject: [PATCH V9 2/2] powerpc/nodes: Ensure enough nodes avail for operations
powerpc/nodes: On systems like PowerPC
information provided by the pHyp.
Also, update initialization checks for device-tree attributes to
independently recognize PRRN or VPHN usage.
Signed-off-by: Michael Bringmann
---
arch/powerpc/include/asm/topology.h | 14 ++
arch/powerpc/mm/numa.c | 64
created, attached, and woken up. If the mask is
not set up, then the kernel will crash when 'wakeup_process' is unable
to find a valid CPU to which to assign the new worker.
Signed-off-by: Michael Bringmann
---
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index c74bf39..6091
1 - 100 of 140 matches
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