From: David Hildenbrand <david@redhat.com>
To: Anshuman Khandual <anshuman.khandual@arm.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org,
akpm@linux-foundation.org, will.deacon@arm.com,
catalin.marinas@arm.com
Cc: mhocko@suse.com, mgorman@techsingularity.net,
james.morse@arm.com, mark.rutland@arm.com, robin.murphy@arm.com,
cpandya@codeaurora.org, arunks@codeaurora.org,
dan.j.williams@intel.com, osalvador@suse.de, logang@deltatee.com,
pasha.tatashin@oracle.com, cai@lca.pw
Subject: Re: [PATCH 1/6] arm64/mm: Enable sysfs based memory hot add interface
Date: Thu, 4 Apr 2019 10:49:17 +0200 [thread overview]
Message-ID: <53c380bf-5896-69db-a054-eba1363fce66@redhat.com> (raw)
In-Reply-To: <fc9dadfa-6557-ecef-f027-7f3af098b55b@arm.com>
On 04.04.19 07:25, Anshuman Khandual wrote:
>
>
> On 04/03/2019 01:50 PM, David Hildenbrand wrote:
>> On 03.04.19 06:30, Anshuman Khandual wrote:
>>> Sysfs memory probe interface (/sys/devices/system/memory/probe) can accept
>>> starting physical address of an entire memory block to be hot added into
>>> the kernel. This is in addition to the existing ACPI based interface. This
>>> just enables it with the required config CONFIG_ARCH_MEMORY_PROBE.
>>>
>> We recently discussed that the similar interface for removal should
>> rather be moved to a debug/test module.
>
> Can we maintain such a debug/test module mainline and enable it when required. Or
> can have both add and remove interface at /sys/kernel/debug/ just for testing
> purpose.
I assume we could put such a module into mainline. It could span up an
interface in debugfs.
--
Thanks,
David / dhildenb
WARNING: multiple messages have this Message-ID (diff)
From: David Hildenbrand <david@redhat.com>
To: Anshuman Khandual <anshuman.khandual@arm.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org,
akpm@linux-foundation.org, will.deacon@arm.com,
catalin.marinas@arm.com
Cc: mark.rutland@arm.com, mhocko@suse.com, robin.murphy@arm.com,
cai@lca.pw, pasha.tatashin@oracle.com, logang@deltatee.com,
james.morse@arm.com, cpandya@codeaurora.org,
arunks@codeaurora.org, dan.j.williams@intel.com,
mgorman@techsingularity.net, osalvador@suse.de
Subject: Re: [PATCH 1/6] arm64/mm: Enable sysfs based memory hot add interface
Date: Thu, 4 Apr 2019 10:49:17 +0200 [thread overview]
Message-ID: <53c380bf-5896-69db-a054-eba1363fce66@redhat.com> (raw)
In-Reply-To: <fc9dadfa-6557-ecef-f027-7f3af098b55b@arm.com>
On 04.04.19 07:25, Anshuman Khandual wrote:
>
>
> On 04/03/2019 01:50 PM, David Hildenbrand wrote:
>> On 03.04.19 06:30, Anshuman Khandual wrote:
>>> Sysfs memory probe interface (/sys/devices/system/memory/probe) can accept
>>> starting physical address of an entire memory block to be hot added into
>>> the kernel. This is in addition to the existing ACPI based interface. This
>>> just enables it with the required config CONFIG_ARCH_MEMORY_PROBE.
>>>
>> We recently discussed that the similar interface for removal should
>> rather be moved to a debug/test module.
>
> Can we maintain such a debug/test module mainline and enable it when required. Or
> can have both add and remove interface at /sys/kernel/debug/ just for testing
> purpose.
I assume we could put such a module into mainline. It could span up an
interface in debugfs.
--
Thanks,
David / dhildenb
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next prev parent reply other threads:[~2019-04-04 8:49 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-03 4:30 [PATCH 0/6] arm64/mm: Enable memory hot remove and ZONE_DEVICE Anshuman Khandual
2019-04-03 4:30 ` Anshuman Khandual
2019-04-03 4:30 ` [PATCH 1/6] arm64/mm: Enable sysfs based memory hot add interface Anshuman Khandual
2019-04-03 4:30 ` Anshuman Khandual
2019-04-03 8:20 ` David Hildenbrand
2019-04-03 8:20 ` David Hildenbrand
2019-04-03 13:12 ` Robin Murphy
2019-04-03 13:12 ` Robin Murphy
2019-04-04 5:21 ` Anshuman Khandual
2019-04-04 5:21 ` Anshuman Khandual
2019-04-04 5:25 ` Anshuman Khandual
2019-04-04 5:25 ` Anshuman Khandual
2019-04-04 8:49 ` David Hildenbrand [this message]
2019-04-04 8:49 ` David Hildenbrand
2019-04-03 4:30 ` [PATCH 2/6] arm64/mm: Enable memory hot remove Anshuman Khandual
2019-04-03 4:30 ` Anshuman Khandual
2019-04-03 12:37 ` Robin Murphy
2019-04-03 12:37 ` Robin Murphy
2019-04-03 13:15 ` Steven Price
2019-04-03 13:15 ` Steven Price
2019-04-04 6:51 ` Anshuman Khandual
2019-04-04 6:51 ` Anshuman Khandual
2019-04-04 5:39 ` Anshuman Khandual
2019-04-04 5:39 ` Anshuman Khandual
2019-04-04 11:58 ` Oscar Salvador
2019-04-04 11:58 ` Oscar Salvador
2019-04-04 13:03 ` Anshuman Khandual
2019-04-04 13:03 ` Anshuman Khandual
2019-04-04 15:19 ` Oscar Salvador
2019-04-04 15:19 ` Oscar Salvador
2019-04-03 17:32 ` Logan Gunthorpe
2019-04-03 17:32 ` Logan Gunthorpe
2019-04-03 17:57 ` Robin Murphy
2019-04-03 17:57 ` Robin Murphy
2019-04-04 8:23 ` Anshuman Khandual
2019-04-04 8:23 ` Anshuman Khandual
2019-04-04 7:07 ` Anshuman Khandual
2019-04-04 7:07 ` Anshuman Khandual
2019-04-04 9:16 ` Steven Price
2019-04-04 9:16 ` Steven Price
2019-04-03 4:30 ` [PATCH 3/6] arm64/mm: Enable struct page allocation from device memory Anshuman Khandual
2019-04-03 4:30 ` Anshuman Khandual
2019-04-03 4:30 ` [PATCH 4/6] mm/hotplug: Reorder arch_remove_memory() call in __remove_memory() Anshuman Khandual
2019-04-03 4:30 ` Anshuman Khandual
2019-04-03 8:45 ` Oscar Salvador
2019-04-03 8:45 ` Oscar Salvador
2019-04-03 9:17 ` Michal Hocko
2019-04-03 9:17 ` Michal Hocko
2019-04-04 8:32 ` Anshuman Khandual
2019-04-04 8:32 ` Anshuman Khandual
2019-04-03 9:30 ` David Hildenbrand
2019-04-03 9:30 ` David Hildenbrand
2019-04-03 4:30 ` [PATCH 5/6] mm/memremap: Rename and consolidate SECTION_SIZE Anshuman Khandual
2019-04-03 4:30 ` Anshuman Khandual
2019-04-03 9:26 ` Michal Hocko
2019-04-03 9:26 ` Michal Hocko
2019-04-03 9:30 ` David Hildenbrand
2019-04-03 9:30 ` David Hildenbrand
2019-04-03 4:30 ` [PATCH 6/6] arm64/mm: Enable ZONE_DEVICE Anshuman Khandual
2019-04-03 4:30 ` Anshuman Khandual
2019-04-03 13:58 ` Robin Murphy
2019-04-03 13:58 ` Robin Murphy
2019-04-03 16:07 ` Jerome Glisse
2019-04-03 16:07 ` Jerome Glisse
2019-04-04 5:03 ` Anshuman Khandual
2019-04-04 5:03 ` Anshuman Khandual
2019-04-04 4:42 ` Anshuman Khandual
2019-04-04 4:42 ` Anshuman Khandual
2019-04-04 5:04 ` Dan Williams
2019-04-04 5:04 ` Dan Williams
2019-04-04 9:46 ` Robin Murphy
2019-04-04 9:46 ` Robin Murphy
2019-04-07 22:11 ` Dan Williams
2019-04-07 22:11 ` Dan Williams
2019-04-08 4:03 ` Ira Weiny
2019-04-08 4:03 ` Ira Weiny
2019-04-08 6:03 ` Anshuman Khandual
2019-04-08 6:03 ` Anshuman Khandual
2019-04-03 18:08 ` [PATCH 0/6] arm64/mm: Enable memory hot remove and ZONE_DEVICE Dan Williams
2019-04-03 18:08 ` Dan Williams
2019-04-03 18:08 ` Dan Williams
2019-04-04 13:11 ` Anshuman Khandual
2019-04-04 13:11 ` Anshuman Khandual
2019-04-04 9:46 ` [RFC 1/2] mm/vmemmap: Enable vmem_altmap based base page mapping for vmemmap Anshuman Khandual
2019-04-04 9:46 ` Anshuman Khandual
2019-04-04 9:46 ` [RFC 2/2] arm64/mm: Enable ZONE_DEVICE for all page configs Anshuman Khandual
2019-04-04 9:46 ` Anshuman Khandual
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