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acpi/hmat: Register performance attributes

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Save the best performance access attributes and register these with the
memory's node if HMAT provides the locality table. While HMAT does make
it possible to know performance for all possible initiator-target
pairings, we export only the local pairings at this time.

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Tested-by: Brice Goglin <Brice.Goglin@inria.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Keith Busch 2019-03-11 14:56:04 -06:00 committed by Greg Kroah-Hartman
parent 665ac7e927
commit 8d59f5a2ca
2 changed files with 13 additions and 2 deletions
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5
drivers/acpi/hmat/Kconfig
View File

@ -2,7 +2,10 @@
config ACPI_HMAT
bool "ACPI Heterogeneous Memory Attribute Table Support"
depends on ACPI_NUMA
select HMEM_REPORTING
help
If set, this option has the kernel parse and report the
platform's ACPI HMAT (Heterogeneous Memory Attributes Table),
and register memory initiators with their targets.
register memory initiators with their targets, and export
performance attributes through the node's sysfs device if
provided.

10
drivers/acpi/hmat/hmat.c
View File

@ -545,12 +545,20 @@ static __init void hmat_register_target_initiators(struct memory_target *target)
}
}
static __init void hmat_register_target_perf(struct memory_target *target)
{
unsigned mem_nid = pxm_to_node(target->memory_pxm);
node_set_perf_attrs(mem_nid, &target->hmem_attrs, 0);
}
static __init void hmat_register_targets(void)
{
struct memory_target *target;
list_for_each_entry(target, &targets, node)
list_for_each_entry(target, &targets, node) {
hmat_register_target_initiators(target);
hmat_register_target_perf(target);
}
}
static __init void hmat_free_structures(void)