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path: root/drivers/acpi/numa/srat.c
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Diffstat (limited to 'drivers/acpi/numa/srat.c')
-rw-r--r--drivers/acpi/numa/srat.c118
1 files changed, 104 insertions, 14 deletions
diff --git a/drivers/acpi/numa/srat.c b/drivers/acpi/numa/srat.c
index bec0dcd1f9c3..0a725e46d017 100644
--- a/drivers/acpi/numa/srat.c
+++ b/drivers/acpi/numa/srat.c
@@ -18,6 +18,7 @@
#include <linux/nodemask.h>
#include <linux/topology.h>
#include <linux/numa_memblks.h>
+#include <linux/string_choices.h>
static nodemask_t nodes_found_map = NODE_MASK_NONE;
@@ -51,6 +52,7 @@ int node_to_pxm(int node)
return PXM_INVAL;
return node_to_pxm_map[node];
}
+EXPORT_SYMBOL_GPL(node_to_pxm);
static void __acpi_map_pxm_to_node(int pxm, int node)
{
@@ -81,6 +83,101 @@ int acpi_map_pxm_to_node(int pxm)
}
EXPORT_SYMBOL(acpi_map_pxm_to_node);
+#ifdef CONFIG_NUMA_EMU
+/*
+ * Take max_nid - 1 fake-numa nodes into account in both
+ * pxm_to_node_map()/node_to_pxm_map[] tables.
+ */
+int __init fix_pxm_node_maps(int max_nid)
+{
+ static int pxm_to_node_map_copy[MAX_PXM_DOMAINS] __initdata
+ = { [0 ... MAX_PXM_DOMAINS - 1] = NUMA_NO_NODE };
+ static int node_to_pxm_map_copy[MAX_NUMNODES] __initdata
+ = { [0 ... MAX_NUMNODES - 1] = PXM_INVAL };
+ int i, j, index = -1, count = 0;
+ nodemask_t nodes_to_enable;
+
+ if (numa_off)
+ return -1;
+
+ /* no or incomplete node/PXM mapping set, nothing to do */
+ if (srat_disabled())
+ return 0;
+
+ /* find fake nodes PXM mapping */
+ for (i = 0; i < MAX_NUMNODES; i++) {
+ if (node_to_pxm_map[i] != PXM_INVAL) {
+ for (j = 0; j <= max_nid; j++) {
+ if ((emu_nid_to_phys[j] == i) &&
+ WARN(node_to_pxm_map_copy[j] != PXM_INVAL,
+ "Node %d is already binded to PXM %d\n",
+ j, node_to_pxm_map_copy[j]))
+ return -1;
+ if (emu_nid_to_phys[j] == i) {
+ node_to_pxm_map_copy[j] =
+ node_to_pxm_map[i];
+ if (j > index)
+ index = j;
+ count++;
+ }
+ }
+ }
+ }
+ if (index == -1) {
+ pr_debug("No node/PXM mapping has been set\n");
+ /* nothing more to be done */
+ return 0;
+ }
+ if (WARN(index != max_nid, "%d max nid when expected %d\n",
+ index, max_nid))
+ return -1;
+
+ nodes_clear(nodes_to_enable);
+
+ /* map phys nodes not used for fake nodes */
+ for (i = 0; i < MAX_NUMNODES; i++) {
+ if (node_to_pxm_map[i] != PXM_INVAL) {
+ for (j = 0; j <= max_nid; j++)
+ if (emu_nid_to_phys[j] == i)
+ break;
+ /* fake nodes PXM mapping has been done */
+ if (j <= max_nid)
+ continue;
+ /* find first hole */
+ for (j = 0;
+ j < MAX_NUMNODES &&
+ node_to_pxm_map_copy[j] != PXM_INVAL;
+ j++)
+ ;
+ if (WARN(j == MAX_NUMNODES,
+ "Number of nodes exceeds MAX_NUMNODES\n"))
+ return -1;
+ node_to_pxm_map_copy[j] = node_to_pxm_map[i];
+ node_set(j, nodes_to_enable);
+ count++;
+ }
+ }
+
+ /* creating reverse mapping in pxm_to_node_map[] */
+ for (i = 0; i < MAX_NUMNODES; i++)
+ if (node_to_pxm_map_copy[i] != PXM_INVAL &&
+ pxm_to_node_map_copy[node_to_pxm_map_copy[i]] == NUMA_NO_NODE)
+ pxm_to_node_map_copy[node_to_pxm_map_copy[i]] = i;
+
+ /* overwrite with new mapping */
+ for (i = 0; i < MAX_NUMNODES; i++) {
+ node_to_pxm_map[i] = node_to_pxm_map_copy[i];
+ pxm_to_node_map[i] = pxm_to_node_map_copy[i];
+ }
+
+ /* enable other nodes found in PXM for hotplug */
+ nodes_or(numa_nodes_parsed, nodes_to_enable, numa_nodes_parsed);
+
+ pr_debug("found %d total number of nodes\n", count);
+ return 0;
+}
+#endif
+
static void __init
acpi_table_print_srat_entry(struct acpi_subtable_header *header)
{
@@ -92,8 +189,7 @@ acpi_table_print_srat_entry(struct acpi_subtable_header *header)
pr_debug("SRAT Processor (id[0x%02x] eid[0x%02x]) in proximity domain %d %s\n",
p->apic_id, p->local_sapic_eid,
p->proximity_domain_lo,
- (p->flags & ACPI_SRAT_CPU_ENABLED) ?
- "enabled" : "disabled");
+ str_enabled_disabled(p->flags & ACPI_SRAT_CPU_ENABLED));
}
break;
@@ -105,8 +201,7 @@ acpi_table_print_srat_entry(struct acpi_subtable_header *header)
(unsigned long long)p->base_address,
(unsigned long long)p->length,
p->proximity_domain,
- (p->flags & ACPI_SRAT_MEM_ENABLED) ?
- "enabled" : "disabled",
+ str_enabled_disabled(p->flags & ACPI_SRAT_MEM_ENABLED),
(p->flags & ACPI_SRAT_MEM_HOT_PLUGGABLE) ?
" hot-pluggable" : "",
(p->flags & ACPI_SRAT_MEM_NON_VOLATILE) ?
@@ -121,8 +216,7 @@ acpi_table_print_srat_entry(struct acpi_subtable_header *header)
pr_debug("SRAT Processor (x2apicid[0x%08x]) in proximity domain %d %s\n",
p->apic_id,
p->proximity_domain,
- (p->flags & ACPI_SRAT_CPU_ENABLED) ?
- "enabled" : "disabled");
+ str_enabled_disabled(p->flags & ACPI_SRAT_CPU_ENABLED));
}
break;
@@ -133,8 +227,7 @@ acpi_table_print_srat_entry(struct acpi_subtable_header *header)
pr_debug("SRAT Processor (acpi id[0x%04x]) in proximity domain %d %s\n",
p->acpi_processor_uid,
p->proximity_domain,
- (p->flags & ACPI_SRAT_GICC_ENABLED) ?
- "enabled" : "disabled");
+ str_enabled_disabled(p->flags & ACPI_SRAT_GICC_ENABLED));
}
break;
@@ -152,8 +245,7 @@ acpi_table_print_srat_entry(struct acpi_subtable_header *header)
*(u16 *)(&p->device_handle[0]),
*(u16 *)(&p->device_handle[2]),
p->proximity_domain,
- (p->flags & ACPI_SRAT_GENERIC_AFFINITY_ENABLED) ?
- "enabled" : "disabled");
+ str_enabled_disabled(p->flags & ACPI_SRAT_GENERIC_AFFINITY_ENABLED));
} else {
/*
* In this case we can rely on the device having a
@@ -163,8 +255,7 @@ acpi_table_print_srat_entry(struct acpi_subtable_header *header)
(char *)(&p->device_handle[0]),
(char *)(&p->device_handle[8]),
p->proximity_domain,
- (p->flags & ACPI_SRAT_GENERIC_AFFINITY_ENABLED) ?
- "enabled" : "disabled");
+ str_enabled_disabled(p->flags & ACPI_SRAT_GENERIC_AFFINITY_ENABLED));
}
}
break;
@@ -176,8 +267,7 @@ acpi_table_print_srat_entry(struct acpi_subtable_header *header)
pr_debug("SRAT Processor (acpi id[0x%04x]) in proximity domain %d %s\n",
p->acpi_processor_uid,
p->proximity_domain,
- (p->flags & ACPI_SRAT_RINTC_ENABLED) ?
- "enabled" : "disabled");
+ str_enabled_disabled(p->flags & ACPI_SRAT_RINTC_ENABLED));
}
break;
generated by cgit v1.2.3 (git 2.39.0) at 2025-08-21 04:38:21 +0300