From: "Rafael J. Wysocki" <rafael@kernel.org>
To: Keith Busch <keith.busch@intel.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
Linux Memory Management List <linux-mm@kvack.org>,
Linux API <linux-api@vger.kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Rafael Wysocki <rafael@kernel.org>,
Dave Hansen <dave.hansen@intel.com>,
Dan Williams <dan.j.williams@intel.com>
Subject: Re: [PATCHv6 07/10] acpi/hmat: Register processor domain to its memory
Date: Wed, 20 Feb 2019 23:02:01 +0100 [thread overview]
Message-ID: <CAJZ5v0gjv0DZvYMTPBLnUmMtu8=g0zFd4x-cpP11Kzv+6XCwUw@mail.gmail.com> (raw)
In-Reply-To: <20190214171017.9362-8-keith.busch@intel.com>
On Thu, Feb 14, 2019 at 6:10 PM Keith Busch <keith.busch@intel.com> wrote:
>
> If the HMAT Subsystem Address Range provides a valid processor proximity
> domain for a memory domain, or a processor domain matches the performance
> access of the valid processor proximity domain, register the memory
> target with that initiator so this relationship will be visible under
> the node's sysfs directory.
>
> By registering only the best performing relationships, this provides the
> most useful information applications may want to know when considering
> which CPU they should run on for a given memory node, or which memory
> node they should allocate memory from for a given CPU.
>
> Since HMAT requires valid address ranges have an equivalent SRAT entry,
> verify each memory target satisfies this requirement.
>
> Signed-off-by: Keith Busch <keith.busch@intel.com>
> ---
> drivers/acpi/hmat/Kconfig | 1 +
> drivers/acpi/hmat/hmat.c | 396 +++++++++++++++++++++++++++++++++++++++++++++-
> 2 files changed, 396 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/acpi/hmat/Kconfig b/drivers/acpi/hmat/Kconfig
> index c9637e2e7514..08e972ead159 100644
> --- a/drivers/acpi/hmat/Kconfig
> +++ b/drivers/acpi/hmat/Kconfig
> @@ -2,6 +2,7 @@
> config ACPI_HMAT
> bool "ACPI Heterogeneous Memory Attribute Table Support"
> depends on ACPI_NUMA
> + select HMEM_REPORTING
If you want to do this here, I'm not sure that defining HMEM_REPORTING
as a user-selectable option is a good idea. In particular, I don't
really think that setting ACPI_HMAT without it makes a lot of sense.
Apart from this, the patch looks reasonable to me.
next prev parent reply other threads:[~2019-02-20 22:02 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-14 17:10 [PATCHv6 00/10] Heterogenous memory node attributes Keith Busch
2019-02-14 17:10 ` [PATCHv6 01/10] acpi: Create subtable parsing infrastructure Keith Busch
2019-02-14 17:10 ` [PATCHv6 02/10] acpi: Add HMAT to generic parsing tables Keith Busch
2019-02-14 17:10 ` [PATCHv6 03/10] acpi/hmat: Parse and report heterogeneous memory Keith Busch
2019-02-14 17:10 ` [PATCHv6 04/10] node: Link memory nodes to their compute nodes Keith Busch
2019-02-14 17:10 ` [PATCHv6 05/10] node: Add heterogenous memory access attributes Keith Busch
2019-02-14 17:10 ` [PATCHv6 06/10] node: Add memory-side caching attributes Keith Busch
2019-02-22 10:12 ` Brice Goglin
2019-02-22 18:09 ` Keith Busch
2019-02-22 18:20 ` Dan Williams
2019-02-22 10:22 ` Brice Goglin
2019-02-22 18:13 ` Keith Busch
2019-02-14 17:10 ` [PATCHv6 07/10] acpi/hmat: Register processor domain to its memory Keith Busch
2019-02-20 22:02 ` Rafael J. Wysocki [this message]
2019-02-20 22:11 ` Dave Hansen
2019-02-20 22:13 ` Dan Williams
2019-02-20 22:16 ` Rafael J. Wysocki
2019-02-20 22:20 ` Dan Williams
2019-02-20 22:21 ` Rafael J. Wysocki
2019-02-20 22:44 ` Keith Busch
2019-02-20 22:50 ` Rafael J. Wysocki
2019-02-22 18:48 ` Keith Busch
2019-02-22 19:21 ` Dan Williams
2019-02-24 20:07 ` Rafael J. Wysocki
2019-02-24 19:59 ` Rafael J. Wysocki
2019-02-25 16:51 ` Keith Busch
2019-02-25 22:30 ` Rafael J. Wysocki
2019-03-07 11:49 ` Brice Goglin
2019-03-07 15:19 ` Keith Busch
2019-02-14 17:10 ` [PATCHv6 08/10] acpi/hmat: Register performance attributes Keith Busch
2019-02-20 22:04 ` Rafael J. Wysocki
2019-02-14 17:10 ` [PATCHv6 09/10] acpi/hmat: Register memory side cache attributes Keith Busch
2019-02-20 22:05 ` Rafael J. Wysocki
2019-02-14 17:10 ` [PATCHv6 10/10] doc/mm: New documentation for memory performance Keith Busch
2019-02-18 14:25 ` [PATCHv6 00/10] Heterogenous memory node attributes Brice Goglin
2019-02-19 17:20 ` Keith Busch
2019-02-20 18:25 ` Keith Busch
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