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Merge branch 'acpi-numa'

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* acpi-numa:
  docs: mm: numaperf.rst Add brief description for access class 1.
  node: Add access1 class to represent CPU to memory characteristics
  ACPI: HMAT: Fix handling of changes from ACPI 6.2 to ACPI 6.3
  ACPI: Let ACPI know we support Generic Initiator Affinity Structures
  x86: Support Generic Initiator only proximity domains
  ACPI: Support Generic Initiator only domains
  ACPI / NUMA: Add stub function for pxm_to_node()
  irq-chip/gic-v3-its: Fix crash if ITS is in a proximity domain without processor or memory
  ACPI: Remove side effect of partly creating a node in acpi_get_node()
  ACPI: Rename acpi_map_pxm_to_online_node() to pxm_to_online_node()
  ACPI: Remove side effect of partly creating a node in acpi_map_pxm_to_online_node()
  ACPI: Do not create new NUMA domains from ACPI static tables that are not SRAT
  ACPI: Add out of bounds and numa_off protections to pxm_to_node()
This commit is contained in:
Rafael J. Wysocki 2020-10-13 14:44:50 +02:00
commit e4174ff78b
15 changed files with 206 additions and 40 deletions
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16
include/linux/acpi.h
View file

@ -420,28 +420,27 @@ int acpi_map_pxm_to_node(int pxm);
int acpi_get_node(acpi_handle handle);
/**
* acpi_map_pxm_to_online_node - Map proximity ID to online node
* pxm_to_online_node - Map proximity ID to online node
* @pxm: ACPI proximity ID
*
* This is similar to acpi_map_pxm_to_node(), but always returns an online
* This is similar to pxm_to_node(), but always returns an online
* node. When the mapped node from a given proximity ID is offline, it
* looks up the node distance table and returns the nearest online node.
*
* ACPI device drivers, which are called after the NUMA initialization has
* completed in the kernel, can call this interface to obtain their device
* NUMA topology from ACPI tables. Such drivers do not have to deal with
* offline nodes. A node may be offline when a device proximity ID is
* unique, SRAT memory entry does not exist, or NUMA is disabled, ex.
* "numa=off" on x86.
* offline nodes. A node may be offline when SRAT memory entry does not exist,
* or NUMA is disabled, ex. "numa=off" on x86.
*/
static inline int acpi_map_pxm_to_online_node(int pxm)
static inline int pxm_to_online_node(int pxm)
{
int node = acpi_map_pxm_to_node(pxm);
int node = pxm_to_node(pxm);
return numa_map_to_online_node(node);
}
#else
static inline int acpi_map_pxm_to_online_node(int pxm)
static inline int pxm_to_online_node(int pxm)
{
return 0;
}
@ -546,6 +545,7 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context);
#define OSC_SB_PCLPI_SUPPORT 0x00000080
#define OSC_SB_OSLPI_SUPPORT 0x00000100
#define OSC_SB_CPC_DIVERSE_HIGH_SUPPORT 0x00001000
#define OSC_SB_GENERIC_INITIATOR_SUPPORT 0x00002000
extern bool osc_sb_apei_support_acked;
extern bool osc_pc_lpi_support_confirmed;

1
include/linux/nodemask.h
View file

@ -399,6 +399,7 @@ enum node_states {
#endif
N_MEMORY, /* The node has memory(regular, high, movable) */
N_CPU, /* The node has one or more cpus */
N_GENERIC_INITIATOR, /* The node has one or more Generic Initiators */
NR_NODE_STATES
};