From: Nathan Fontenot <nfont@linux.vnet.ibm.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v3 7/12] Use stop machine to update cpu maps
Date: Tue, 23 Apr 2013 13:58:06 -0500 [thread overview]
Message-ID: <5176D9BE.3090402@linux.vnet.ibm.com> (raw)
In-Reply-To: <1366676688.2886.5.camel@pasglop>
On 04/22/2013 07:24 PM, Benjamin Herrenschmidt wrote:
> On Mon, 2013-04-22 at 13:41 -0500, Nathan Fontenot wrote:
>> From: Jesse Larrew <jlarrew@linux.vnet.ibm.com>
>>
>> Platform events such as partition migration or the new PRRN firmware
>> feature can cause the NUMA characteristics of a CPU to change, and these
>> changes will be reflected in the device tree nodes for the affected
>> CPUs.
>>
>> This patch registers a handler for Open Firmware device tree updates
>> and reconfigures the CPU and node maps whenever the associativity
>> changes. Currently, this is accomplished by marking the affected CPUs in
>> the cpu_associativity_changes_mask and allowing
>> arch_update_cpu_topology() to retrieve the new associativity information
>> using hcall_vphn().
>>
>> Protecting the NUMA cpu maps from concurrent access during an update
>> operation will be addressed in a subsequent patch in this series.
>
> I see no more mention of stop_machine() ... is the patch subject stale ?
>
Nope, just me mistakenly putting the wrong subject for this patch. I'll
correct it in the next version.
-Nathan
next prev parent reply other threads:[~2013-04-23 18:58 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-22 17:54 [PATCH v3 0/12] NUMA CPU Reconfiguration using PRRN Nathan Fontenot
2013-04-22 18:30 ` [PATCH v3 1/12] Create a powerpc update_devicetree interface Nathan Fontenot
2013-04-23 0:15 ` Benjamin Herrenschmidt
2013-04-23 18:46 ` Nathan Fontenot
2013-04-23 20:54 ` Benjamin Herrenschmidt
2013-04-22 18:31 ` [PATCH v3 2/12] Correct buffer parsing in update-properties Nathan Fontenot
2013-04-22 18:33 ` [PATCH v3 3/12] Add PRRN event handler Nathan Fontenot
2013-04-22 18:35 ` [PATCH v3 4/12] Move architecture vector definitions to prom.h Nathan Fontenot
2013-04-23 0:18 ` Benjamin Herrenschmidt
2013-04-22 18:38 ` [PATCH v3 5/12] Update firmware_has_feature() to check architecture bits Nathan Fontenot
2013-04-23 1:50 ` Stephen Rothwell
2013-04-23 18:56 ` Nathan Fontenot
2013-04-23 1:52 ` Stephen Rothwell
2013-04-22 18:40 ` [PATCH v3 6/12] Update numa.c to use updated firmware_has_feature() Nathan Fontenot
2013-04-22 18:41 ` [PATCH v3 7/12] Use stop machine to update cpu maps Nathan Fontenot
2013-04-23 0:24 ` Benjamin Herrenschmidt
2013-04-23 18:58 ` Nathan Fontenot [this message]
2013-04-22 18:44 ` [PATCH v3 8/12] " Nathan Fontenot
2013-04-22 18:45 ` [PATCH v3 9/12] Update NUMA VDSO information Nathan Fontenot
2013-04-22 18:46 ` [PATCH v3 10/12] Re-enable Virtual Private Home Node capabilities Nathan Fontenot
2013-04-22 18:47 ` [PATCH v3 11/12] Enable PRRN Event handling Nathan Fontenot
2013-04-22 18:47 ` [PATCH v3 12/12] Add /proc interface to control topology updates Nathan Fontenot
2013-04-23 2:00 ` Stephen Rothwell
2013-04-23 2:49 ` Michael Ellerman
2013-04-23 18:59 ` Nathan Fontenot
2013-04-23 2:02 ` Stephen Rothwell
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