From: Keith Busch <keith.busch@intel.com>
To: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org,
linux-mm@kvack.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Rafael Wysocki <rafael@kernel.org>,
Dave Hansen <dave.hansen@intel.com>,
Dan Williams <dan.j.williams@intel.com>,
Keith Busch <keith.busch@intel.com>
Subject: [PATCHv2 08/12] acpi/hmat: Register performance attributes
Date: Mon, 10 Dec 2018 18:03:06 -0700 [thread overview]
Message-ID: <20181211010310.8551-9-keith.busch@intel.com> (raw)
In-Reply-To: <20181211010310.8551-1-keith.busch@intel.com>
Save the best performance access attributes and register these with the
memory's node if HMAT provides the locality table.
Signed-off-by: Keith Busch <keith.busch@intel.com>
---
drivers/acpi/Kconfig | 1 +
drivers/acpi/hmat.c | 34 ++++++++++++++++++++++++++++++++++
2 files changed, 35 insertions(+)
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 9a05af3a18cf..6b5f6ca690af 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -330,6 +330,7 @@ config ACPI_NUMA
config ACPI_HMAT
bool "ACPI Heterogeneous Memory Attribute Table Support"
depends on ACPI_NUMA
+ select HMEM_REPORTING
help
Parses representation of the ACPI Heterogeneous Memory Attributes
Table (HMAT) and set the memory node relationships and access
diff --git a/drivers/acpi/hmat.c b/drivers/acpi/hmat.c
index 5d8747ad025f..40bc83f4b593 100644
--- a/drivers/acpi/hmat.c
+++ b/drivers/acpi/hmat.c
@@ -23,6 +23,8 @@ struct memory_target {
struct list_head node;
unsigned int memory_pxm;
unsigned long p_nodes[BITS_TO_LONGS(MAX_NUMNODES)];
+ bool hmem_valid;
+ struct node_hmem_attrs hmem;
};
static __init struct memory_target *find_mem_target(unsigned int m)
@@ -108,6 +110,34 @@ static __init void hmat_update_access(u8 type, u32 value, u32 *best)
}
}
+static __init void hmat_update_target(struct memory_target *t, u8 type,
+ u32 value)
+{
+ switch (type) {
+ case ACPI_HMAT_ACCESS_LATENCY:
+ t->hmem.read_latency = value;
+ t->hmem.write_latency = value;
+ break;
+ case ACPI_HMAT_READ_LATENCY:
+ t->hmem.read_latency = value;
+ break;
+ case ACPI_HMAT_WRITE_LATENCY:
+ t->hmem.write_latency = value;
+ break;
+ case ACPI_HMAT_ACCESS_BANDWIDTH:
+ t->hmem.read_bandwidth = value;
+ t->hmem.write_bandwidth = value;
+ break;
+ case ACPI_HMAT_READ_BANDWIDTH:
+ t->hmem.read_bandwidth = value;
+ break;
+ case ACPI_HMAT_WRITE_BANDWIDTH:
+ t->hmem.write_bandwidth = value;
+ break;
+ }
+ t->hmem_valid = true;
+}
+
static __init int hmat_parse_locality(union acpi_subtable_headers *header,
const unsigned long end)
{
@@ -166,6 +196,8 @@ static __init int hmat_parse_locality(union acpi_subtable_headers *header,
set_bit(p_node, t->p_nodes);
}
}
+ if (t && best)
+ hmat_update_target(t, type, best);
}
return 0;
}
@@ -267,6 +299,8 @@ static __init void hmat_register_targets(void)
m = pxm_to_node(t->memory_pxm);
for_each_set_bit(p, t->p_nodes, MAX_NUMNODES)
register_memory_node_under_compute_node(m, p);
+ if (t->hmem_valid)
+ node_set_perf_attrs(m, &t->hmem);
kfree(t);
}
}
--
2.14.4
next prev parent reply other threads:[~2018-12-11 1:05 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-11 1:02 [PATCHv2 00/12] Heterogeneous memory node attributes Keith Busch
2018-12-11 1:02 ` [PATCHv2 01/12] acpi: Create subtable parsing infrastructure Keith Busch
2018-12-11 9:44 ` Rafael J. Wysocki
2018-12-19 23:19 ` Schmauss, Erik
2018-12-19 23:59 ` Dan Williams
2018-12-20 1:15 ` Schmauss, Erik
2018-12-20 8:57 ` Rafael J. Wysocki
2018-12-20 19:00 ` Schmauss, Erik
2018-12-13 9:05 ` kbuild test robot
2018-12-19 22:10 ` kbuild test robot
2018-12-11 1:03 ` [PATCHv2 02/12] acpi/hmat: Parse and report heterogeneous memory Keith Busch
2018-12-11 6:03 ` Dan Williams
2018-12-11 16:55 ` Keith Busch
2018-12-11 20:29 ` Dan Williams
2018-12-11 20:44 ` Keith Busch
2018-12-11 22:50 ` Dan Williams
2018-12-11 1:03 ` [PATCHv2 03/12] node: Link memory nodes to their compute nodes Keith Busch
2018-12-11 1:03 ` [PATCHv2 04/12] Documentation/ABI: Add new node sysfs attributes Keith Busch
2018-12-11 1:03 ` [PATCHv2 05/12] acpi/hmat: Register processor domain to its memory Keith Busch
2018-12-11 1:03 ` [PATCHv2 06/12] node: Add heterogenous memory performance Keith Busch
2018-12-11 1:03 ` [PATCHv2 07/12] Documentation/ABI: Add node performance attributes Keith Busch
2018-12-11 1:03 ` Keith Busch [this message]
2018-12-11 1:03 ` [PATCHv2 09/12] node: Add memory caching attributes Keith Busch
2018-12-11 1:03 ` [PATCHv2 10/12] Documentation/ABI: Add node cache attributes Keith Busch
2018-12-11 1:03 ` [PATCHv2 11/12] acpi/hmat: Register memory side " Keith Busch
2018-12-11 1:03 ` [PATCHv2 12/12] doc/mm: New documentation for memory performance Keith Busch
2018-12-11 6:45 ` Mike Rapoport
2018-12-12 4:53 ` Aneesh Kumar K.V
2018-12-12 14:45 ` Keith Busch
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