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-rw-r--r--drivers/acpi/Kconfig1
-rw-r--r--drivers/acpi/Makefile1
-rw-r--r--drivers/acpi/hmat/Kconfig11
-rw-r--r--drivers/acpi/hmat/Makefile1
-rw-r--r--drivers/acpi/hmat/hmat.c666
-rw-r--r--drivers/acpi/numa.c16
-rw-r--r--drivers/acpi/scan.c4
-rw-r--r--drivers/acpi/tables.c76
-rw-r--r--drivers/base/Kconfig9
-rw-r--r--drivers/base/arch_topology.c36
-rw-r--r--drivers/base/core.c5
-rw-r--r--drivers/base/dd.c5
-rw-r--r--drivers/base/firmware_loader/Kconfig1
-rw-r--r--drivers/base/firmware_loader/builtin/.gitignore1
-rw-r--r--drivers/base/firmware_loader/fallback.c6
-rw-r--r--drivers/base/node.c352
-rw-r--r--drivers/base/platform.c12
-rw-r--r--drivers/base/power/clock_ops.c3
-rw-r--r--drivers/base/power/common.c4
-rw-r--r--drivers/base/power/domain.c4
-rw-r--r--drivers/base/power/domain_governor.c4
-rw-r--r--drivers/base/power/generic_ops.c4
-rw-r--r--drivers/base/power/main.c4
-rw-r--r--drivers/base/power/qos.c6
-rw-r--r--drivers/base/power/runtime.c4
-rw-r--r--drivers/base/power/sysfs.c6
-rw-r--r--drivers/base/power/trace.c2
-rw-r--r--drivers/base/power/wakeirq.c15
-rw-r--r--drivers/base/power/wakeup.c4
-rw-r--r--drivers/base/test/Makefile1
-rw-r--r--drivers/irqchip/irq-gic-v2m.c2
-rw-r--r--drivers/irqchip/irq-gic-v3-its-pci-msi.c2
-rw-r--r--drivers/irqchip/irq-gic-v3-its-platform-msi.c2
-rw-r--r--drivers/irqchip/irq-gic-v3-its.c6
-rw-r--r--drivers/irqchip/irq-gic-v3.c10
-rw-r--r--drivers/irqchip/irq-gic.c4
-rw-r--r--drivers/mailbox/pcc.c2
37 files changed, 1164 insertions, 128 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 4e015c77e48e..283ee94224c6 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -475,6 +475,7 @@ config ACPI_REDUCED_HARDWARE_ONLY
If you are unsure what to do, do not enable this option.
source "drivers/acpi/nfit/Kconfig"
+source "drivers/acpi/hmat/Kconfig"
source "drivers/acpi/apei/Kconfig"
source "drivers/acpi/dptf/Kconfig"
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index bb857421c2e8..5d361e4e3405 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -80,6 +80,7 @@ obj-$(CONFIG_ACPI_PROCESSOR) += processor.o
obj-$(CONFIG_ACPI) += container.o
obj-$(CONFIG_ACPI_THERMAL) += thermal.o
obj-$(CONFIG_ACPI_NFIT) += nfit/
+obj-$(CONFIG_ACPI_HMAT) += hmat/
obj-$(CONFIG_ACPI) += acpi_memhotplug.o
obj-$(CONFIG_ACPI_HOTPLUG_IOAPIC) += ioapic.o
obj-$(CONFIG_ACPI_BATTERY) += battery.o
diff --git a/drivers/acpi/hmat/Kconfig b/drivers/acpi/hmat/Kconfig
new file mode 100644
index 000000000000..95a29964dbea
--- /dev/null
+++ b/drivers/acpi/hmat/Kconfig
@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: GPL-2.0
+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),
+ register memory initiators with their targets, and export
+ performance attributes through the node's sysfs device if
+ provided.
diff --git a/drivers/acpi/hmat/Makefile b/drivers/acpi/hmat/Makefile
new file mode 100644
index 000000000000..e909051d3d00
--- /dev/null
+++ b/drivers/acpi/hmat/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_ACPI_HMAT) := hmat.o
diff --git a/drivers/acpi/hmat/hmat.c b/drivers/acpi/hmat/hmat.c
new file mode 100644
index 000000000000..96b7d39a97c6
--- /dev/null
+++ b/drivers/acpi/hmat/hmat.c
@@ -0,0 +1,666 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2019, Intel Corporation.
+ *
+ * Heterogeneous Memory Attributes Table (HMAT) representation
+ *
+ * This program parses and reports the platform's HMAT tables, and registers
+ * the applicable attributes with the node's interfaces.
+ */
+
+#include <linux/acpi.h>
+#include <linux/bitops.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/list_sort.h>
+#include <linux/node.h>
+#include <linux/sysfs.h>
+
+static __initdata u8 hmat_revision;
+
+static __initdata LIST_HEAD(targets);
+static __initdata LIST_HEAD(initiators);
+static __initdata LIST_HEAD(localities);
+
+/*
+ * The defined enum order is used to prioritize attributes to break ties when
+ * selecting the best performing node.
+ */
+enum locality_types {
+ WRITE_LATENCY,
+ READ_LATENCY,
+ WRITE_BANDWIDTH,
+ READ_BANDWIDTH,
+};
+
+static struct memory_locality *localities_types[4];
+
+struct memory_target {
+ struct list_head node;
+ unsigned int memory_pxm;
+ unsigned int processor_pxm;
+ struct node_hmem_attrs hmem_attrs;
+};
+
+struct memory_initiator {
+ struct list_head node;
+ unsigned int processor_pxm;
+};
+
+struct memory_locality {
+ struct list_head node;
+ struct acpi_hmat_locality *hmat_loc;
+};
+
+static __init struct memory_initiator *find_mem_initiator(unsigned int cpu_pxm)
+{
+ struct memory_initiator *initiator;
+
+ list_for_each_entry(initiator, &initiators, node)
+ if (initiator->processor_pxm == cpu_pxm)
+ return initiator;
+ return NULL;
+}
+
+static __init struct memory_target *find_mem_target(unsigned int mem_pxm)
+{
+ struct memory_target *target;
+
+ list_for_each_entry(target, &targets, node)
+ if (target->memory_pxm == mem_pxm)
+ return target;
+ return NULL;
+}
+
+static __init void alloc_memory_initiator(unsigned int cpu_pxm)
+{
+ struct memory_initiator *initiator;
+
+ if (pxm_to_node(cpu_pxm) == NUMA_NO_NODE)
+ return;
+
+ initiator = find_mem_initiator(cpu_pxm);
+ if (initiator)
+ return;
+
+ initiator = kzalloc(sizeof(*initiator), GFP_KERNEL);
+ if (!initiator)
+ return;
+
+ initiator->processor_pxm = cpu_pxm;
+ list_add_tail(&initiator->node, &initiators);
+}
+
+static __init void alloc_memory_target(unsigned int mem_pxm)
+{
+ struct memory_target *target;
+
+ if (pxm_to_node(mem_pxm) == NUMA_NO_NODE)
+ return;
+
+ target = find_mem_target(mem_pxm);
+ if (target)
+ return;
+
+ target = kzalloc(sizeof(*target), GFP_KERNEL);
+ if (!target)
+ return;
+
+ target->memory_pxm = mem_pxm;
+ target->processor_pxm = PXM_INVAL;
+ list_add_tail(&target->node, &targets);
+}
+
+static __init const char *hmat_data_type(u8 type)
+{
+ switch (type) {
+ case ACPI_HMAT_ACCESS_LATENCY:
+ return "Access Latency";
+ case ACPI_HMAT_READ_LATENCY:
+ return "Read Latency";
+ case ACPI_HMAT_WRITE_LATENCY:
+ return "Write Latency";
+ case ACPI_HMAT_ACCESS_BANDWIDTH:
+ return "Access Bandwidth";
+ case ACPI_HMAT_READ_BANDWIDTH:
+ return "Read Bandwidth";
+ case ACPI_HMAT_WRITE_BANDWIDTH:
+ return "Write Bandwidth";
+ default:
+ return "Reserved";
+ }
+}
+
+static __init const char *hmat_data_type_suffix(u8 type)
+{
+ switch (type) {
+ case ACPI_HMAT_ACCESS_LATENCY:
+ case ACPI_HMAT_READ_LATENCY:
+ case ACPI_HMAT_WRITE_LATENCY:
+ return " nsec";
+ case ACPI_HMAT_ACCESS_BANDWIDTH:
+ case ACPI_HMAT_READ_BANDWIDTH:
+ case ACPI_HMAT_WRITE_BANDWIDTH:
+ return " MB/s";
+ default:
+ return "";
+ }
+}
+
+static __init u32 hmat_normalize(u16 entry, u64 base, u8 type)
+{
+ u32 value;
+
+ /*
+ * Check for invalid and overflow values
+ */
+ if (entry == 0xffff || !entry)
+ return 0;
+ else if (base > (UINT_MAX / (entry)))
+ return 0;
+
+ /*
+ * Divide by the base unit for version 1, convert latency from
+ * picosenonds to nanoseconds if revision 2.
+ */
+ value = entry * base;
+ if (hmat_revision == 1) {
+ if (value < 10)
+ return 0;
+ value = DIV_ROUND_UP(value, 10);
+ } else if (hmat_revision == 2) {
+ switch (type) {
+ case ACPI_HMAT_ACCESS_LATENCY:
+ case ACPI_HMAT_READ_LATENCY:
+ case ACPI_HMAT_WRITE_LATENCY:
+ value = DIV_ROUND_UP(value, 1000);
+ break;
+ default:
+ break;
+ }
+ }
+ return value;
+}
+
+static __init void hmat_update_target_access(struct memory_target *target,
+ u8 type, u32 value)
+{
+ switch (type) {
+ case ACPI_HMAT_ACCESS_LATENCY:
+ target->hmem_attrs.read_latency = value;
+ target->hmem_attrs.write_latency = value;
+ break;
+ case ACPI_HMAT_READ_LATENCY:
+ target->hmem_attrs.read_latency = value;
+ break;
+ case ACPI_HMAT_WRITE_LATENCY:
+ target->hmem_attrs.write_latency = value;
+ break;
+ case ACPI_HMAT_ACCESS_BANDWIDTH:
+ target->hmem_attrs.read_bandwidth = value;
+ target->hmem_attrs.write_bandwidth = value;
+ break;
+ case ACPI_HMAT_READ_BANDWIDTH:
+ target->hmem_attrs.read_bandwidth = value;
+ break;
+ case ACPI_HMAT_WRITE_BANDWIDTH:
+ target->hmem_attrs.write_bandwidth = value;
+ break;
+ default:
+ break;
+ }
+}
+
+static __init void hmat_add_locality(struct acpi_hmat_locality *hmat_loc)
+{
+ struct memory_locality *loc;
+
+ loc = kzalloc(sizeof(*loc), GFP_KERNEL);
+ if (!loc) {
+ pr_notice_once("Failed to allocate HMAT locality\n");
+ return;
+ }
+
+ loc->hmat_loc = hmat_loc;
+ list_add_tail(&loc->node, &localities);
+
+ switch (hmat_loc->data_type) {
+ case ACPI_HMAT_ACCESS_LATENCY:
+ localities_types[READ_LATENCY] = loc;
+ localities_types[WRITE_LATENCY] = loc;
+ break;
+ case ACPI_HMAT_READ_LATENCY:
+ localities_types[READ_LATENCY] = loc;
+ break;
+ case ACPI_HMAT_WRITE_LATENCY:
+ localities_types[WRITE_LATENCY] = loc;
+ break;
+ case ACPI_HMAT_ACCESS_BANDWIDTH:
+ localities_types[READ_BANDWIDTH] = loc;
+ localities_types[WRITE_BANDWIDTH] = loc;
+ break;
+ case ACPI_HMAT_READ_BANDWIDTH:
+ localities_types[READ_BANDWIDTH] = loc;
+ break;
+ case ACPI_HMAT_WRITE_BANDWIDTH:
+ localities_types[WRITE_BANDWIDTH] = loc;
+ break;
+ default:
+ break;
+ }
+}
+
+static __init int hmat_parse_locality(union acpi_subtable_headers *header,
+ const unsigned long end)
+{
+ struct acpi_hmat_locality *hmat_loc = (void *)header;
+ struct memory_target *target;
+ unsigned int init, targ, total_size, ipds, tpds;
+ u32 *inits, *targs, value;
+ u16 *entries;
+ u8 type, mem_hier;
+
+ if (hmat_loc->header.length < sizeof(*hmat_loc)) {
+ pr_notice("HMAT: Unexpected locality header length: %d\n",
+ hmat_loc->header.length);
+ return -EINVAL;
+ }
+
+ type = hmat_loc->data_type;
+ mem_hier = hmat_loc->flags & ACPI_HMAT_MEMORY_HIERARCHY;
+ ipds = hmat_loc->number_of_initiator_Pds;
+ tpds = hmat_loc->number_of_target_Pds;
+ total_size = sizeof(*hmat_loc) + sizeof(*entries) * ipds * tpds +
+ sizeof(*inits) * ipds + sizeof(*targs) * tpds;
+ if (hmat_loc->header.length < total_size) {
+ pr_notice("HMAT: Unexpected locality header length:%d, minimum required:%d\n",
+ hmat_loc->header.length, total_size);
+ return -EINVAL;
+ }
+
+ pr_info("HMAT: Locality: Flags:%02x Type:%s Initiator Domains:%d Target Domains:%d Base:%lld\n",
+ hmat_loc->flags, hmat_data_type(type), ipds, tpds,
+ hmat_loc->entry_base_unit);
+
+ inits = (u32 *)(hmat_loc + 1);
+ targs = inits + ipds;
+ entries = (u16 *)(targs + tpds);
+ for (init = 0; init < ipds; init++) {
+ alloc_memory_initiator(inits[init]);
+ for (targ = 0; targ < tpds; targ++) {
+ value = hmat_normalize(entries[init * tpds + targ],
+ hmat_loc->entry_base_unit,
+ type);
+ pr_info(" Initiator-Target[%d-%d]:%d%s\n",
+ inits[init], targs[targ], value,
+ hmat_data_type_suffix(type));
+
+ if (mem_hier == ACPI_HMAT_MEMORY) {
+ target = find_mem_target(targs[targ]);
+ if (target && target->processor_pxm == inits[init])
+ hmat_update_target_access(target, type, value);
+ }
+ }
+ }
+
+ if (mem_hier == ACPI_HMAT_MEMORY)
+ hmat_add_locality(hmat_loc);
+
+ return 0;
+}
+
+static __init int hmat_parse_cache(union acpi_subtable_headers *header,
+ const unsigned long end)
+{
+ struct acpi_hmat_cache *cache = (void *)header;
+ struct node_cache_attrs cache_attrs;
+ u32 attrs;
+
+ if (cache->header.length < sizeof(*cache)) {
+ pr_notice("HMAT: Unexpected cache header length: %d\n",
+ cache->header.length);
+ return -EINVAL;
+ }
+
+ attrs = cache->cache_attributes;
+ pr_info("HMAT: Cache: Domain:%d Size:%llu Attrs:%08x SMBIOS Handles:%d\n",
+ cache->memory_PD, cache->cache_size, attrs,
+ cache->number_of_SMBIOShandles);
+
+ cache_attrs.size = cache->cache_size;
+ cache_attrs.level = (attrs & ACPI_HMAT_CACHE_LEVEL) >> 4;
+ cache_attrs.line_size = (attrs & ACPI_HMAT_CACHE_LINE_SIZE) >> 16;
+
+ switch ((attrs & ACPI_HMAT_CACHE_ASSOCIATIVITY) >> 8) {
+ case ACPI_HMAT_CA_DIRECT_MAPPED:
+ cache_attrs.indexing = NODE_CACHE_DIRECT_MAP;
+ break;
+ case ACPI_HMAT_CA_COMPLEX_CACHE_INDEXING:
+ cache_attrs.indexing = NODE_CACHE_INDEXED;
+ break;
+ case ACPI_HMAT_CA_NONE:
+ default:
+ cache_attrs.indexing = NODE_CACHE_OTHER;
+ break;
+ }
+
+ switch ((attrs & ACPI_HMAT_WRITE_POLICY) >> 12) {
+ case ACPI_HMAT_CP_WB:
+ cache_attrs.write_policy = NODE_CACHE_WRITE_BACK;
+ break;
+ case ACPI_HMAT_CP_WT:
+ cache_attrs.write_policy = NODE_CACHE_WRITE_THROUGH;
+ break;
+ case ACPI_HMAT_CP_NONE:
+ default:
+ cache_attrs.write_policy = NODE_CACHE_WRITE_OTHER;
+ break;
+ }
+
+ node_add_cache(pxm_to_node(cache->memory_PD), &cache_attrs);
+ return 0;
+}
+
+static int __init hmat_parse_proximity_domain(union acpi_subtable_headers *header,
+ const unsigned long end)
+{
+ struct acpi_hmat_proximity_domain *p = (void *)header;
+ struct memory_target *target = NULL;
+
+ if (p->header.length != sizeof(*p)) {
+ pr_notice("HMAT: Unexpected address range header length: %d\n",
+ p->header.length);
+ return -EINVAL;
+ }
+
+ if (hmat_revision == 1)
+ pr_info("HMAT: Memory (%#llx length %#llx) Flags:%04x Processor Domain:%d Memory Domain:%d\n",
+ p->reserved3, p->reserved4, p->flags, p->processor_PD,
+ p->memory_PD);
+ else
+ pr_info("HMAT: Memory Flags:%04x Processor Domain:%d Memory Domain:%d\n",
+ p->flags, p->processor_PD, p->memory_PD);
+
+ if (p->flags & ACPI_HMAT_MEMORY_PD_VALID) {
+ target = find_mem_target(p->memory_PD);
+ if (!target) {
+ pr_debug("HMAT: Memory Domain missing from SRAT\n");
+ return -EINVAL;
+ }
+ }
+ if (target && p->flags & ACPI_HMAT_PROCESSOR_PD_VALID) {
+ int p_node = pxm_to_node(p->processor_PD);
+
+ if (p_node == NUMA_NO_NODE) {
+ pr_debug("HMAT: Invalid Processor Domain\n");
+ return -EINVAL;
+ }
+ target->processor_pxm = p_node;
+ }
+
+ return 0;
+}
+
+static int __init hmat_parse_subtable(union acpi_subtable_headers *header,
+ const unsigned long end)
+{
+ struct acpi_hmat_structure *hdr = (void *)header;
+
+ if (!hdr)
+ return -EINVAL;
+
+ switch (hdr->type) {
+ case ACPI_HMAT_TYPE_PROXIMITY:
+ return hmat_parse_proximity_domain(header, end);
+ case ACPI_HMAT_TYPE_LOCALITY:
+ return hmat_parse_locality(header, end);
+ case ACPI_HMAT_TYPE_CACHE:
+ return hmat_parse_cache(header, end);
+ default:
+ return -EINVAL;
+ }
+}
+
+static __init int srat_parse_mem_affinity(union acpi_subtable_headers *header,
+ const unsigned long end)
+{
+ struct acpi_srat_mem_affinity *ma = (void *)header;
+
+ if (!ma)
+ return -EINVAL;
+ if (!(ma->flags & ACPI_SRAT_MEM_ENABLED))
+ return 0;
+ alloc_memory_target(ma->proximity_domain);
+ return 0;
+}
+
+static __init u32 hmat_initiator_perf(struct memory_target *target,
+ struct memory_initiator *initiator,
+ struct acpi_hmat_locality *hmat_loc)
+{
+ unsigned int ipds, tpds, i, idx = 0, tdx = 0;
+ u32 *inits, *targs;
+ u16 *entries;
+
+ ipds = hmat_loc->number_of_initiator_Pds;
+ tpds = hmat_loc->number_of_target_Pds;
+ inits = (u32 *)(hmat_loc + 1);
+ targs = inits + ipds;
+ entries = (u16 *)(targs + tpds);
+
+ for (i = 0; i < ipds; i++) {
+ if (inits[i] == initiator->processor_pxm) {
+ idx = i;
+ break;
+ }
+ }
+
+ if (i == ipds)
+ return 0;
+
+ for (i = 0; i < tpds; i++) {
+ if (targs[i] == target->memory_pxm) {
+ tdx = i;
+ break;
+ }
+ }
+ if (i == tpds)
+ return 0;
+
+ return hmat_normalize(entries[idx * tpds + tdx],
+ hmat_loc->entry_base_unit,
+ hmat_loc->data_type);
+}
+
+static __init bool hmat_update_best(u8 type, u32 value, u32 *best)
+{
+ bool updated = false;
+
+ if (!value)
+ return false;
+
+ switch (type) {
+ case ACPI_HMAT_ACCESS_LATENCY:
+ case ACPI_HMAT_READ_LATENCY:
+ case ACPI_HMAT_WRITE_LATENCY:
+ if (!*best || *best > value) {
+ *best = value;
+ updated = true;
+ }
+ break;
+ case ACPI_HMAT_ACCESS_BANDWIDTH:
+ case ACPI_HMAT_READ_BANDWIDTH:
+ case ACPI_HMAT_WRITE_BANDWIDTH:
+ if (!*best || *best < value) {
+ *best = value;
+ updated = true;
+ }
+ break;
+ }
+
+ return updated;
+}
+
+static int initiator_cmp(void *priv, struct list_head *a, struct list_head *b)
+{
+ struct memory_initiator *ia;
+ struct memory_initiator *ib;
+ unsigned long *p_nodes = priv;
+
+ ia = list_entry(a, struct memory_initiator, node);
+ ib = list_entry(b, struct memory_initiator, node);
+
+ set_bit(ia->processor_pxm, p_nodes);
+ set_bit(ib->processor_pxm, p_nodes);
+
+ return ia->processor_pxm - ib->processor_pxm;
+}
+
+static __init void hmat_register_target_initiators(struct memory_target *target)
+{
+ static DECLARE_BITMAP(p_nodes, MAX_NUMNODES);
+ struct memory_initiator *initiator;
+ unsigned int mem_nid, cpu_nid;
+ struct memory_locality *loc = NULL;
+ u32 best = 0;
+ int i;
+
+ mem_nid = pxm_to_node(target->memory_pxm);
+ /*
+ * If the Address Range Structure provides a local processor pxm, link
+ * only that one. Otherwise, find the best performance attributes and
+ * register all initiators that match.
+ */
+ if (target->processor_pxm != PXM_INVAL) {
+ cpu_nid = pxm_to_node(target->processor_pxm);
+ register_memory_node_under_compute_node(mem_nid, cpu_nid, 0);
+ return;
+ }
+
+ if (list_empty(&localities))
+ return;
+
+ /*
+ * We need the initiator list sorted so we can use bitmap_clear for
+ * previously set initiators when we find a better memory accessor.
+ * We'll also use the sorting to prime the candidate nodes with known
+ * initiators.
+ */
+ bitmap_zero(p_nodes, MAX_NUMNODES);
+ list_sort(p_nodes, &initiators, initiator_cmp);
+ for (i = WRITE_LATENCY; i <= READ_BANDWIDTH; i++) {
+ loc = localities_types[i];
+ if (!loc)
+ continue;
+
+ best = 0;
+ list_for_each_entry(initiator, &initiators, node) {
+ u32 value;
+
+ if (!test_bit(initiator->processor_pxm, p_nodes))
+ continue;
+
+ value = hmat_initiator_perf(target, initiator, loc->hmat_loc);
+ if (hmat_update_best(loc->hmat_loc->data_type, value, &best))
+ bitmap_clear(p_nodes, 0, initiator->processor_pxm);
+ if (value != best)
+ clear_bit(initiator->processor_pxm, p_nodes);
+ }
+ if (best)
+ hmat_update_target_access(target, loc->hmat_loc->data_type, best);
+ }
+
+ for_each_set_bit(i, p_nodes, MAX_NUMNODES) {
+ cpu_nid = pxm_to_node(i);
+ register_memory_node_under_compute_node(mem_nid, cpu_nid, 0);
+ }
+}
+
+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) {
+ hmat_register_target_initiators(target);
+ hmat_register_target_perf(target);
+ }
+}
+
+static __init void hmat_free_structures(void)
+{
+ struct memory_target *target, *tnext;
+ struct memory_locality *loc, *lnext;
+ struct memory_initiator *initiator, *inext;
+
+ list_for_each_entry_safe(target, tnext, &targets, node) {
+ list_del(&target->node);
+ kfree(target);
+ }
+
+ list_for_each_entry_safe(initiator, inext, &initiators, node) {
+ list_del(&initiator->node);
+ kfree(initiator);
+ }
+
+ list_for_each_entry_safe(loc, lnext, &localities, node) {
+ list_del(&loc->node);
+ kfree(loc);
+ }
+}
+
+static __init int hmat_init(void)
+{
+ struct acpi_table_header *tbl;
+ enum acpi_hmat_type i;
+ acpi_status status;
+
+ if (srat_disabled())
+ return 0;
+
+ status = acpi_get_table(ACPI_SIG_SRAT, 0, &tbl);
+ if (ACPI_FAILURE(status))
+ return 0;
+
+ if (acpi_table_parse_entries(ACPI_SIG_SRAT,
+ sizeof(struct acpi_table_srat),
+ ACPI_SRAT_TYPE_MEMORY_AFFINITY,
+ srat_parse_mem_affinity, 0) < 0)
+ goto out_put;
+ acpi_put_table(tbl);
+
+ status = acpi_get_table(ACPI_SIG_HMAT, 0, &tbl);
+ if (ACPI_FAILURE(status))
+ goto out_put;
+
+ hmat_revision = tbl->revision;
+ switch (hmat_revision) {
+ case 1:
+ case 2:
+ break;
+ default:
+ pr_notice("Ignoring HMAT: Unknown revision:%d\n", hmat_revision);
+ goto out_put;
+ }
+
+ for (i = ACPI_HMAT_TYPE_PROXIMITY; i < ACPI_HMAT_TYPE_RESERVED; i++) {
+ if (acpi_table_parse_entries(ACPI_SIG_HMAT,
+ sizeof(struct acpi_table_hmat), i,
+ hmat_parse_subtable, 0) < 0) {
+ pr_notice("Ignoring HMAT: Invalid table");
+ goto out_put;
+ }
+ }
+ hmat_register_targets();
+out_put:
+ hmat_free_structures();
+ acpi_put_table(tbl);
+ return 0;
+}
+subsys_initcall(hmat_init);
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
index 867f6e3f2b4f..30995834ad70 100644
--- a/drivers/acpi/numa.c
+++ b/drivers/acpi/numa.c
@@ -339,7 +339,7 @@ acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa)
}
static int __init
-acpi_parse_x2apic_affinity(struct acpi_subtable_header *header,
+acpi_parse_x2apic_affinity(union acpi_subtable_headers *header,
const unsigned long end)
{
struct acpi_srat_x2apic_cpu_affinity *processor_affinity;
@@ -348,7 +348,7 @@ acpi_parse_x2apic_affinity(struct acpi_subtable_header *header,
if (!processor_affinity)
return -EINVAL;
- acpi_table_print_srat_entry(header);
+ acpi_table_print_srat_entry(&header->common);
/* let architecture-dependent part to do it */
acpi_numa_x2apic_affinity_init(processor_affinity);
@@ -357,7 +357,7 @@ acpi_parse_x2apic_affinity(struct acpi_subtable_header *header,
}
static int __init
-acpi_parse_processor_affinity(struct acpi_subtable_header *header,
+acpi_parse_processor_affinity(union acpi_subtable_headers *header,
const unsigned long end)
{
struct acpi_srat_cpu_affinity *processor_affinity;
@@ -366,7 +366,7 @@ acpi_parse_processor_affinity(struct acpi_subtable_header *header,
if (!processor_affinity)
return -EINVAL;
- acpi_table_print_srat_entry(header);
+ acpi_table_print_srat_entry(&header->common);
/* let architecture-dependent part to do it */
acpi_numa_processor_affinity_init(processor_affinity);
@@ -375,7 +375,7 @@ acpi_parse_processor_affinity(struct acpi_subtable_header *header,
}
static int __init
-acpi_parse_gicc_affinity(struct acpi_subtable_header *header,
+acpi_parse_gicc_affinity(union acpi_subtable_headers *header,
const unsigned long end)
{
struct acpi_srat_gicc_affinity *processor_affinity;
@@ -384,7 +384,7 @@ acpi_parse_gicc_affinity(struct acpi_subtable_header *header,
if (!processor_affinity)
return -EINVAL;
- acpi_table_print_srat_entry(header);
+ acpi_table_print_srat_entry(&header->common);
/* let architecture-dependent part to do it */
acpi_numa_gicc_affinity_init(processor_affinity);
@@ -395,7 +395,7 @@ acpi_parse_gicc_affinity(struct acpi_subtable_header *header,
static int __initdata parsed_numa_memblks;
static int __init
-acpi_parse_memory_affinity(struct acpi_subtable_header * header,
+acpi_parse_memory_affinity(union acpi_subtable_headers * header,
const unsigned long end)
{
struct acpi_srat_mem_affinity *memory_affinity;
@@ -404,7 +404,7 @@ acpi_parse_memory_affinity(struct acpi_subtable_header * header,
if (!memory_affinity)
return -EINVAL;
- acpi_table_print_srat_entry(header);
+ acpi_table_print_srat_entry(&header->common);
/* let architecture-dependent part to do it */
if (!acpi_numa_memory_affinity_init(memory_affinity))
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index b845dc3e0ba9..566270d0e91a 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -2238,10 +2238,10 @@ static struct acpi_probe_entry *ape;
static int acpi_probe_count;
static DEFINE_MUTEX(acpi_probe_mutex);
-static int __init acpi_match_madt(struct acpi_subtable_header *header,
+static int __init acpi_match_madt(union acpi_subtable_headers *header,
const unsigned long end)
{
- if (!ape->subtable_valid || ape->subtable_valid(header, ape))
+ if (!ape->subtable_valid || ape->subtable_valid(&header->common, ape))
if (!ape->probe_subtbl(header, end))
acpi_probe_count++;
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index d7bf936b1646..3b5d04fd5e3e 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -49,6 +49,16 @@ static struct acpi_table_desc initial_tables[ACPI_MAX_TABLES] __initdata;
static int acpi_apic_instance __initdata;
+enum acpi_subtable_type {
+ ACPI_SUBTABLE_COMMON,
+ ACPI_SUBTABLE_HMAT,
+};
+
+struct acpi_subtable_entry {
+ union acpi_subtable_headers *hdr;
+ enum acpi_subtable_type type;
+};
+
/*
* Disable table checksum verification for the early stage due to the size
* limitation of the current x86 early mapping implementation.
@@ -217,6 +227,50 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header)
}
}
+static unsigned long __init
+acpi_get_entry_type(struct acpi_subtable_entry *entry)
+{
+ switch (entry->type) {
+ case ACPI_SUBTABLE_COMMON:
+ return entry->hdr->common.type;
+ case ACPI_SUBTABLE_HMAT:
+ return entry->hdr->hmat.type;
+ }
+ return 0;
+}
+
+static unsigned long __init
+acpi_get_entry_length(struct acpi_subtable_entry *entry)
+{
+ switch (entry->type) {
+ case ACPI_SUBTABLE_COMMON:
+ return entry->hdr->common.length;
+ case ACPI_SUBTABLE_HMAT:
+ return entry->hdr->hmat.length;
+ }
+ return 0;
+}
+
+static unsigned long __init
+acpi_get_subtable_header_length(struct acpi_subtable_entry *entry)
+{
+ switch (entry->type) {
+ case ACPI_SUBTABLE_COMMON:
+ return sizeof(entry->hdr->common);
+ case ACPI_SUBTABLE_HMAT:
+ return sizeof(entry->hdr->hmat);
+ }
+ return 0;
+}
+
+static enum acpi_subtable_type __init
+acpi_get_subtable_type(char *id)
+{
+ if (strncmp(id, ACPI_SIG_HMAT, 4) == 0)
+ return ACPI_SUBTABLE_HMAT;
+ return ACPI_SUBTABLE_COMMON;
+}
+
/**
* acpi_parse_entries_array - for each proc_num find a suitable subtable
*
@@ -245,8 +299,8 @@ static int __init acpi_parse_entries_array(char *id, unsigned long table_size,
struct acpi_subtable_proc *proc, int proc_num,
unsigned int max_entries)
{
- struct acpi_subtable_header *entry;
- unsigned long table_end;
+ struct acpi_subtable_entry entry;
+ unsigned long table_end, subtable_len, entry_len;
int count = 0;
int errs = 0;
int i;
@@ -269,19 +323,20 @@ static int __init acpi_parse_entries_array(char *id, unsigned long table_size,
/* Parse all entries looking for a match. */
- entry = (struct acpi_subtable_header *)
+ entry.type = acpi_get_subtable_type(id);
+ entry.hdr = (union acpi_subtable_headers *)
((unsigned long)table_header + table_size);
+ subtable_len = acpi_get_subtable_header_length(&entry);
- while (((unsigned long)entry) + sizeof(struct acpi_subtable_header) <
- table_end) {
+ while (((unsigned long)entry.hdr) + subtable_len < table_end) {
if (max_entries && count >= max_entries)
break;
for (i = 0; i < proc_num; i++) {
- if (entry->type != proc[i].id)
+ if (acpi_get_entry_type(&entry) != proc[i].id)
continue;
if (!proc[i].handler ||
- (!errs && proc[i].handler(entry, table_end))) {
+ (!errs && proc[i].handler(entry.hdr, table_end))) {
errs++;
continue;
}
@@ -296,13 +351,14 @@ static int __init acpi_parse_entries_array(char *id, unsigned long table_size,
* If entry->length is 0, break from this loop to avoid
* infinite loop.
*/
- if (entry->length == 0) {
+ entry_len = acpi_get_entry_length(&entry);
+ if (entry_len == 0) {
pr_err("[%4.4s:0x%02x] Invalid zero length\n", id, proc->id);
return -EINVAL;
}
- entry = (struct acpi_subtable_header *)
- ((unsigned long)entry + entry->length);
+ entry.hdr = (union acpi_subtable_headers *)
+ ((unsigned long)entry.hdr + entry_len);
}
if (max_entries && count > max_entries) {
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index 03f067da12ee..dc404492381d 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -3,7 +3,6 @@ menu "Generic Driver Options"
config UEVENT_HELPER
bool "Support for uevent helper"
- default y
help
The uevent helper program is forked by the kernel for
every uevent.
@@ -149,6 +148,14 @@ config DEBUG_TEST_DRIVER_REMOVE
unusable. You should say N here unless you are explicitly looking to
test this functionality.
+config HMEM_REPORTING
+ bool
+ default n
+ depends on NUMA
+ help
+ Enable reporting for heterogenous memory access attributes under
+ their non-uniform memory nodes.
+
source "drivers/base/test/Kconfig"
config SYS_HYPERVISOR
diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c
index edfcf8d982e4..1739d7e1952a 100644
--- a/drivers/base/arch_topology.c
+++ b/drivers/base/arch_topology.c
@@ -7,7 +7,6 @@
*/
#include <linux/acpi.h>
-#include <linux/arch_topology.h>
#include <linux/cpu.h>
#include <linux/cpufreq.h>
#include <linux/device.h>
@@ -31,7 +30,6 @@ void arch_set_freq_scale(struct cpumask *cpus, unsigned long cur_freq,
per_cpu(freq_scale, i) = scale;
}
-static DEFINE_MUTEX(cpu_scale_mutex);
DEFINE_PER_CPU(unsigned long, cpu_scale) = SCHED_CAPACITY_SCALE;
void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity)
@@ -51,37 +49,7 @@ static ssize_t cpu_capacity_show(struct device *dev,
static void update_topology_flags_workfn(struct work_struct *work);
static DECLARE_WORK(update_topology_flags_work, update_topology_flags_workfn);
-static ssize_t cpu_capacity_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf,
- size_t count)
-{
- struct cpu *cpu = container_of(dev, struct cpu, dev);
- int this_cpu = cpu->dev.id;
- int i;
- unsigned long new_capacity;
- ssize_t ret;
-
- if (!count)
- return 0;
-
- ret = kstrtoul(buf, 0, &new_capacity);
- if (ret)
- return ret;
- if (new_capacity > SCHED_CAPACITY_SCALE)
- return -EINVAL;
-
- mutex_lock(&cpu_scale_mutex);
- for_each_cpu(i, &cpu_topology[this_cpu].core_sibling)
- topology_set_cpu_scale(i, new_capacity);
- mutex_unlock(&cpu_scale_mutex);
-
- schedule_work(&update_topology_flags_work);
-
- return count;
-}
-
-static DEVICE_ATTR_RW(cpu_capacity);
+static DEVICE_ATTR_RO(cpu_capacity);
static int register_cpu_capacity_sysctl(void)
{
@@ -141,7 +109,6 @@ void topology_normalize_cpu_scale(void)
return;
pr_debug("cpu_capacity: capacity_scale=%u\n", capacity_scale);
- mutex_lock(&cpu_scale_mutex);
for_each_possible_cpu(cpu) {
pr_debug("cpu_capacity: cpu=%d raw_capacity=%u\n",
cpu, raw_capacity[cpu]);
@@ -151,7 +118,6 @@ void topology_normalize_cpu_scale(void)
pr_debug("cpu_capacity: CPU%d cpu_capacity=%lu\n",
cpu, topology_get_cpu_scale(NULL, cpu));
}
- mutex_unlock(&cpu_scale_mutex);
}
bool __init topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu)
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 4aeaa0c92bda..fd7511e04e62 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -1999,6 +1999,11 @@ static int device_private_init(struct device *dev)
* NOTE: _Never_ directly free @dev after calling this function, even
* if it returned an error! Always use put_device() to give up your
* reference instead.
+ *
+ * Rule of thumb is: if device_add() succeeds, you should call
+ * device_del() when you want to get rid of it. If device_add() has
+ * *not* succeeded, use *only* put_device() to drop the reference
+ * count.
*/
int device_add(struct device *dev)
{
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index a823f469e53f..0df9b4461766 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -490,7 +490,7 @@ re_probe:
if (dev->bus->dma_configure) {
ret = dev->bus->dma_configure(dev);
if (ret)
- goto dma_failed;
+ goto probe_failed;
}
if (driver_sysfs_add(dev)) {
@@ -546,14 +546,13 @@ re_probe:
goto done;
probe_failed:
- arch_teardown_dma_ops(dev);
-dma_failed:
if (dev->bus)
blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
BUS_NOTIFY_DRIVER_NOT_BOUND, dev);
pinctrl_bind_failed:
device_links_no_driver(dev);
devres_release_all(dev);
+ arch_teardown_dma_ops(dev);
driver_sysfs_remove(dev);
dev->driver = NULL;
dev_set_drvdata(dev, NULL);
diff --git a/drivers/base/firmware_loader/Kconfig b/drivers/base/firmware_loader/Kconfig
index eb15d976a9ea..38f2da6f5c2b 100644
--- a/drivers/base/firmware_loader/Kconfig
+++ b/drivers/base/firmware_loader/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
menu "Firmware loader"
config FW_LOADER
diff --git a/drivers/base/firmware_loader/builtin/.gitignore b/drivers/base/firmware_loader/builtin/.gitignore
index 9c8bdb9fdcc3..166f76b43049 100644
--- a/drivers/base/firmware_loader/builtin/.gitignore
+++ b/drivers/base/firmware_loader/builtin/.gitignore
@@ -1 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
*.gen.S
diff --git a/drivers/base/firmware_loader/fallback.c b/drivers/base/firmware_loader/fallback.c
index b5c865fe263b..f962488546b6 100644
--- a/drivers/base/firmware_loader/fallback.c
+++ b/drivers/base/firmware_loader/fallback.c
@@ -674,8 +674,8 @@ static bool fw_run_sysfs_fallback(enum fw_opt opt_flags)
*
* This function is called if direct lookup for the firmware failed, it enables
* a fallback mechanism through userspace by exposing a sysfs loading
- * interface. Userspace is in charge of loading the firmware through the syfs
- * loading interface. This syfs fallback mechanism may be disabled completely
+ * interface. Userspace is in charge of loading the firmware through the sysfs
+ * loading interface. This sysfs fallback mechanism may be disabled completely
* on a system by setting the proc sysctl value ignore_sysfs_fallback to true.
* If this false we check if the internal API caller set the @FW_OPT_NOFALLBACK
* flag, if so it would also disable the fallback mechanism. A system may want
@@ -693,7 +693,7 @@ int firmware_fallback_sysfs(struct firmware *fw, const char *name,
return ret;
if (!(opt_flags & FW_OPT_NO_WARN))
- dev_warn(device, "Falling back to syfs fallback for: %s\n",
+ dev_warn(device, "Falling back to sysfs fallback for: %s\n",
name);
else
dev_dbg(device, "Falling back to sysfs fallback for: %s\n",
diff --git a/drivers/base/node.c b/drivers/base/node.c
index 86d6cd92ce3d..8598fcbd2a17 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -17,6 +17,7 @@
#include <linux/nodemask.h>
#include <linux/cpu.h>
#include <linux/device.h>
+#include <linux/pm_runtime.h>
#include <linux/swap.h>
#include <linux/slab.h>
@@ -59,6 +60,302 @@ static inline ssize_t node_read_cpulist(struct device *dev,
static DEVICE_ATTR(cpumap, S_IRUGO, node_read_cpumask, NULL);
static DEVICE_ATTR(cpulist, S_IRUGO, node_read_cpulist, NULL);
+/**
+ * struct node_access_nodes - Access class device to hold user visible
+ * relationships to other nodes.
+ * @dev: Device for this memory access class
+ * @list_node: List element in the node's access list
+ * @access: The access class rank
+ */
+struct node_access_nodes {
+ struct device dev;
+ struct list_head list_node;
+ unsigned access;
+#ifdef CONFIG_HMEM_REPORTING
+ struct node_hmem_attrs hmem_attrs;
+#endif
+};
+#define to_access_nodes(dev) container_of(dev, struct node_access_nodes, dev)
+
+static struct attribute *node_init_access_node_attrs[] = {
+ NULL,
+};
+
+static struct attribute *node_targ_access_node_attrs[] = {
+ NULL,
+};
+
+static const struct attribute_group initiators = {
+ .name = "initiators",
+ .attrs = node_init_access_node_attrs,
+};
+
+static const struct attribute_group targets = {
+ .name = "targets",
+ .attrs = node_targ_access_node_attrs,
+};
+
+static const struct attribute_group *node_access_node_groups[] = {
+ &initiators,
+ &targets,
+ NULL,
+};
+
+static void node_remove_accesses(struct node *node)
+{
+ struct node_access_nodes *c, *cnext;
+
+ list_for_each_entry_safe(c, cnext, &node->access_list, list_node) {
+ list_del(&c->list_node);
+ device_unregister(&c->dev);
+ }
+}
+
+static void node_access_release(struct device *dev)
+{
+ kfree(to_access_nodes(dev));
+}
+
+static struct node_access_nodes *node_init_node_access(struct node *node,
+ unsigned access)
+{
+ struct node_access_nodes *access_node;
+ struct device *dev;
+
+ list_for_each_entry(access_node, &node->access_list, list_node)
+ if (access_node->access == access)
+ return access_node;
+
+ access_node = kzalloc(sizeof(*access_node), GFP_KERNEL);
+ if (!access_node)
+ return NULL;
+
+ access_node->access = access;
+ dev = &access_node->dev;
+ dev->parent = &node->dev;
+ dev->release = node_access_release;
+ dev->groups = node_access_node_groups;
+ if (dev_set_name(dev, "access%u", access))
+ goto free;
+
+ if (device_register(dev))
+ goto free_name;
+
+ pm_runtime_no_callbacks(dev);
+ list_add_tail(&access_node->list_node, &node->access_list);
+ return access_node;
+free_name:
+ kfree_const(dev->kobj.name);
+free:
+ kfree(access_node);
+ return NULL;
+}
+
+#ifdef CONFIG_HMEM_REPORTING
+#define ACCESS_ATTR(name) \
+static ssize_t name##_show(struct device *dev, \
+ struct device_attribute *attr, \
+ char *buf) \
+{ \
+ return sprintf(buf, "%u\n", to_access_nodes(dev)->hmem_attrs.name); \
+} \
+static DEVICE_ATTR_RO(name);
+
+ACCESS_ATTR(read_bandwidth)
+ACCESS_ATTR(read_latency)
+ACCESS_ATTR(write_bandwidth)
+ACCESS_ATTR(write_latency)
+
+static struct attribute *access_attrs[] = {
+ &dev_attr_read_bandwidth.attr,
+ &dev_attr_read_latency.attr,
+ &dev_attr_write_bandwidth.attr,
+ &dev_attr_write_latency.attr,
+ NULL,
+};
+
+/**
+ * node_set_perf_attrs - Set the performance values for given access class
+ * @nid: Node identifier to be set
+ * @hmem_attrs: Heterogeneous memory performance attributes
+ * @access: The access class the for the given attributes
+ */
+void node_set_perf_attrs(unsigned int nid, struct node_hmem_attrs *hmem_attrs,
+ unsigned access)
+{
+ struct node_access_nodes *c;
+ struct node *node;
+ int i;
+
+ if (WARN_ON_ONCE(!node_online(nid)))
+ return;
+
+ node = node_devices[nid];
+ c = node_init_node_access(node, access);
+ if (!c)
+ return;
+
+ c->hmem_attrs = *hmem_attrs;
+ for (i = 0; access_attrs[i] != NULL; i++) {
+ if (sysfs_add_file_to_group(&c->dev.kobj, access_attrs[i],
+ "initiators")) {
+ pr_info("failed to add performance attribute to node %d\n",
+ nid);
+ break;
+ }
+ }
+}
+
+/**
+ * struct node_cache_info - Internal tracking for memory node caches
+ * @dev: Device represeting the cache level
+ * @node: List element for tracking in the node
+ * @cache_attrs:Attributes for this cache level
+ */
+struct node_cache_info {
+ struct device dev;
+ struct list_head node;
+ struct node_cache_attrs cache_attrs;
+};
+#define to_cache_info(device) container_of(device, struct node_cache_info, dev)
+
+#define CACHE_ATTR(name, fmt) \
+static ssize_t name##_show(struct device *dev, \
+ struct device_attribute *attr, \
+ char *buf) \
+{ \
+ return sprintf(buf, fmt "\n", to_cache_info(dev)->cache_attrs.name);\
+} \
+DEVICE_ATTR_RO(name);
+
+CACHE_ATTR(size, "%llu")
+CACHE_ATTR(line_size, "%u")
+CACHE_ATTR(indexing, "%u")
+CACHE_ATTR(write_policy, "%u")
+
+static struct attribute *cache_attrs[] = {
+ &dev_attr_indexing.attr,
+ &dev_attr_size.attr,
+ &dev_attr_line_size.attr,
+ &dev_attr_write_policy.attr,
+ NULL,
+};
+ATTRIBUTE_GROUPS(cache);
+
+static void node_cache_release(struct device *dev)
+{
+ kfree(dev);
+}
+
+static void node_cacheinfo_release(struct device *dev)
+{
+ struct node_cache_info *info = to_cache_info(dev);
+ kfree(info);
+}
+
+static void node_init_cache_dev(struct node *node)
+{
+ struct device *dev;
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return;
+
+ dev->parent = &node->dev;
+ dev->release = node_cache_release;
+ if (dev_set_name(dev, "memory_side_cache"))
+ goto free_dev;
+
+ if (device_register(dev))
+ goto free_name;
+
+ pm_runtime_no_callbacks(dev);
+ node->cache_dev = dev;
+ return;
+free_name:
+ kfree_const(dev->kobj.name);
+free_dev:
+ kfree(dev);
+}
+
+/**
+ * node_add_cache() - add cache attribute to a memory node
+ * @nid: Node identifier that has new cache attributes
+ * @cache_attrs: Attributes for the cache being added
+ */
+void node_add_cache(unsigned int nid, struct node_cache_attrs *cache_attrs)
+{
+ struct node_cache_info *info;
+ struct device *dev;
+ struct node *node;
+
+ if (!node_online(nid) || !node_devices[nid])
+ return;
+
+ node = node_devices[nid];
+ list_for_each_entry(info, &node->cache_attrs, node) {
+ if (info->cache_attrs.level == cache_attrs->level) {
+ dev_warn(&node->dev,
+ "attempt to add duplicate cache level:%d\n",
+ cache_attrs->level);
+ return;
+ }
+ }
+
+ if (!node->cache_dev)
+ node_init_cache_dev(node);
+ if (!node->cache_dev)
+ return;
+
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return;
+
+ dev = &info->dev;
+ dev->parent = node->cache_dev;
+ dev->release = node_cacheinfo_release;
+ dev->groups = cache_groups;
+ if (dev_set_name(dev, "index%d", cache_attrs->level))
+ goto free_cache;
+
+ info->cache_attrs = *cache_attrs;
+ if (device_register(dev)) {
+ dev_warn(&node->dev, "failed to add cache level:%d\n",
+ cache_attrs->level);
+ goto free_name;
+ }
+ pm_runtime_no_callbacks(dev);
+ list_add_tail(&info->node, &node->cache_attrs);
+ return;
+free_name:
+ kfree_const(dev->kobj.name);
+free_cache:
+ kfree(info);
+}
+
+static void node_remove_caches(struct node *node)
+{
+ struct node_cache_info *info, *next;
+
+ if (!node->cache_dev)
+ return;
+
+ list_for_each_entry_safe(info, next, &node->cache_attrs, node) {
+ list_del(&info->node);
+ device_unregister(&info->dev);
+ }
+ device_unregister(node->cache_dev);
+}
+
+static void node_init_caches(unsigned int nid)
+{
+ INIT_LIST_HEAD(&node_devices[nid]->cache_attrs);
+}
+#else
+static void node_init_caches(unsigned int nid) { }
+static void node_remove_caches(struct node *node) { }
+#endif
+
#define K(x) ((x) << (PAGE_SHIFT - 10))
static ssize_t node_read_meminfo(struct device *dev,
struct device_attribute *attr, char *buf)
@@ -340,7 +637,8 @@ static int register_node(struct node *node, int num)
void unregister_node(struct node *node)
{
hugetlb_unregister_node(node); /* no-op, if memoryless node */
-
+ node_remove_accesses(node);
+ node_remove_caches(node);
device_unregister(&node->dev);
}
@@ -372,6 +670,56 @@ int register_cpu_under_node(unsigned int cpu, unsigned int nid)
kobject_name(&node_devices[nid]->dev.kobj));
}
+/**
+ * register_memory_node_under_compute_node - link memory node to its compute
+ * node for a given access class.
+ * @mem_node: Memory node number
+ * @cpu_node: Cpu node number
+ * @access: Access class to register
+ *
+ * Description:
+ * For use with platforms that may have separate memory and compute nodes.
+ * This function will export node relationships linking which memory
+ * initiator nodes can access memory targets at a given ranked access
+ * class.
+ */
+int register_memory_node_under_compute_node(unsigned int mem_nid,
+ unsigned int cpu_nid,
+ unsigned access)
+{
+ struct node *init_node, *targ_node;
+ struct node_access_nodes *initiator, *target;
+ int ret;
+
+ if (!node_online(cpu_nid) || !node_online(mem_nid))
+ return -ENODEV;
+
+ init_node = node_devices[cpu_nid];
+ targ_node = node_devices[mem_nid];
+ initiator = node_init_node_access(init_node, access);
+ target = node_init_node_access(targ_node, access);
+ if (!initiator || !target)
+ return -ENOMEM;
+
+ ret = sysfs_add_link_to_group(&initiator->dev.kobj, "targets",
+ &targ_node->dev.kobj,
+ dev_name(&targ_node->dev));
+ if (ret)
+ return ret;
+
+ ret = sysfs_add_link_to_group(&target->dev.kobj, "initiators",
+ &init_node->dev.kobj,
+ dev_name(&init_node->dev));
+ if (ret)
+ goto err;
+
+ return 0;
+ err:
+ sysfs_remove_link_from_group(&initiator->dev.kobj, "targets",
+ dev_name(&targ_node->dev));
+ return ret;
+}
+
int unregister_cpu_under_node(unsigned int cpu, unsigned int nid)
{
struct device *obj;
@@ -580,8 +928,10 @@ int __register_one_node(int nid)
register_cpu_under_node(cpu, nid);
}
+ INIT_LIST_HEAD(&node_devices[nid]->access_list);
/* initialize work queue for memory hot plug */
init_node_hugetlb_work(nid);
+ node_init_caches(nid);
return error;
}
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index dab0a5abc391..4d1729853d1a 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -84,7 +84,7 @@ EXPORT_SYMBOL_GPL(platform_get_resource);
* device
*
* @pdev: platform device to use both for memory resource lookup as well as
- * resource managemend
+ * resource management
* @index: resource index
*/
#ifdef CONFIG_HAS_IOMEM
@@ -438,10 +438,12 @@ int platform_device_add(struct platform_device *pdev)
p = &ioport_resource;
}
- if (p && insert_resource(p, r)) {
- dev_err(&pdev->dev, "failed to claim resource %d: %pR\n", i, r);
- ret = -EBUSY;
- goto failed;
+ if (p) {
+ ret = insert_resource(p, r);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to claim resource %d: %pR\n", i, r);
+ goto failed;
+ }
}
}
diff --git a/drivers/base/power/clock_ops.c b/drivers/base/power/clock_ops.c
index 365ad751ce0f..59d19dd64928 100644
--- a/drivers/base/power/clock_ops.c
+++ b/drivers/base/power/clock_ops.c
@@ -1,9 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* drivers/base/power/clock_ops.c - Generic clock manipulation PM callbacks
*
* Copyright (c) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
- *
- * This file is released under the GPLv2.
*/
#include <linux/kernel.h>
diff --git a/drivers/base/power/common.c b/drivers/base/power/common.c
index 22aedb28aad7..8db98a1f83dc 100644
--- a/drivers/base/power/common.c
+++ b/drivers/base/power/common.c
@@ -1,11 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* drivers/base/power/common.c - Common device power management code.
*
* Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
- *
- * This file is released under the GPLv2.
*/
-
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/export.h>
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 3d899e8abd58..7a6aa2318915 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -1,11 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* drivers/base/power/domain.c - Common code related to device power domains.
*
* Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
- *
- * This file is released under the GPLv2.
*/
-
#define pr_fmt(fmt) "PM: " fmt
#include <linux/delay.h>
diff --git a/drivers/base/power/domain_governor.c b/drivers/base/power/domain_governor.c
index 7912bc957244..3838045c9277 100644
--- a/drivers/base/power/domain_governor.c
+++ b/drivers/base/power/domain_governor.c
@@ -1,11 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* drivers/base/power/domain_governor.c - Governors for device PM domains.
*
* Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
- *
- * This file is released under the GPLv2.
*/
-
#include <linux/kernel.h>
#include <linux/pm_domain.h>
#include <linux/pm_qos.h>
diff --git a/drivers/base/power/generic_ops.c b/drivers/base/power/generic_ops.c
index b2ed606265a8..4fa525668cb7 100644
--- a/drivers/base/power/generic_ops.c
+++ b/drivers/base/power/generic_ops.c
@@ -1,11 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* drivers/base/power/generic_ops.c - Generic PM callbacks for subsystems
*
* Copyright (c) 2010 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
- *
- * This file is released under the GPLv2.
*/
-
#include <linux/pm.h>
#include <linux/pm_runtime.h>
#include <linux/export.h>
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 10528a7747bf..dcfc0a36c8f7 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -1,12 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* drivers/base/power/main.c - Where the driver meets power management.
*
* Copyright (c) 2003 Patrick Mochel
* Copyright (c) 2003 Open Source Development Lab
*
- * This file is released under the GPLv2
- *
- *
* The driver model core calls device_pm_add() when a device is registered.
* This will initialize the embedded device_pm_info object in the device
* and add it to the list of power-controlled devices. sysfs entries for
diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c
index f80e402ef778..6c91f8df1d59 100644
--- a/drivers/base/power/qos.c
+++ b/drivers/base/power/qos.c
@@ -1,13 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Devices PM QoS constraints management
*
* Copyright (C) 2011 Texas Instruments, Inc.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- *
* This module exposes the interface to kernel space for specifying
* per-device PM QoS dependencies. It provides infrastructure for registration
* of:
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index 977db40378b0..952a1e7057c7 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -1,12 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* drivers/base/power/runtime.c - Helper functions for device runtime PM
*
* Copyright (c) 2009 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
* Copyright (C) 2010 Alan Stern <stern@rowland.harvard.edu>
- *
- * This file is released under the GPLv2.
*/
-
#include <linux/sched/mm.h>
#include <linux/ktime.h>
#include <linux/hrtimer.h>
diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c
index 1226e441ddfe..1b9c281cbe41 100644
--- a/drivers/base/power/sysfs.c
+++ b/drivers/base/power/sysfs.c
@@ -1,7 +1,5 @@
-/*
- * drivers/base/power/sysfs.c - sysfs entries for device PM
- */
-
+// SPDX-License-Identifier: GPL-2.0
+/* sysfs entries for device PM */
#include <linux/device.h>
#include <linux/string.h>
#include <linux/export.h>
diff --git a/drivers/base/power/trace.c b/drivers/base/power/trace.c
index 2bd9d2c744ca..977d27bd1a22 100644
--- a/drivers/base/power/trace.c
+++ b/drivers/base/power/trace.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* drivers/base/power/trace.c
*
@@ -6,7 +7,6 @@
* Trace facility for suspend/resume problems, when none of the
* devices may be working.
*/
-
#define pr_fmt(fmt) "PM: " fmt
#include <linux/pm-trace.h>
diff --git a/drivers/base/power/wakeirq.c b/drivers/base/power/wakeirq.c
index b8fa5c0f2d13..5ce77d1ef9fc 100644
--- a/drivers/base/power/wakeirq.c
+++ b/drivers/base/power/wakeirq.c
@@ -1,16 +1,5 @@
-/*
- * wakeirq.c - Device wakeirq helper functions
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
- * kind, whether express or implied; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
+// SPDX-License-Identifier: GPL-2.0
+/* Device wakeirq helper functions */
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c
index 23c243a4c675..5b2b6a05a4f3 100644
--- a/drivers/base/power/wakeup.c
+++ b/drivers/base/power/wakeup.c
@@ -1,11 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* drivers/base/power/wakeup.c - System wakeup events framework
*
* Copyright (c) 2010 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
- *
- * This file is released under the GPLv2.
*/
-
#define pr_fmt(fmt) "PM: " fmt
#include <linux/device.h>
diff --git a/drivers/base/test/Makefile b/drivers/base/test/Makefile
index 90477c5fd9f9..0f1f7277a013 100644
--- a/drivers/base/test/Makefile
+++ b/drivers/base/test/Makefile
@@ -1 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_TEST_ASYNC_DRIVER_PROBE) += test_async_driver_probe.o
diff --git a/drivers/irqchip/irq-gic-v2m.c b/drivers/irqchip/irq-gic-v2m.c
index f5fe0100f9ff..de14e06fd9ec 100644
--- a/drivers/irqchip/irq-gic-v2m.c
+++ b/drivers/irqchip/irq-gic-v2m.c
@@ -446,7 +446,7 @@ static struct fwnode_handle *gicv2m_get_fwnode(struct device *dev)
}
static int __init
-acpi_parse_madt_msi(struct acpi_subtable_header *header,
+acpi_parse_madt_msi(union acpi_subtable_headers *header,
const unsigned long end)
{
int ret;
diff --git a/drivers/irqchip/irq-gic-v3-its-pci-msi.c b/drivers/irqchip/irq-gic-v3-its-pci-msi.c
index 8d6d009d1d58..c81d5b81da56 100644
--- a/drivers/irqchip/irq-gic-v3-its-pci-msi.c
+++ b/drivers/irqchip/irq-gic-v3-its-pci-msi.c
@@ -159,7 +159,7 @@ static int __init its_pci_of_msi_init(void)
#ifdef CONFIG_ACPI
static int __init
-its_pci_msi_parse_madt(struct acpi_subtable_header *header,
+its_pci_msi_parse_madt(union acpi_subtable_headers *header,
const unsigned long end)
{
struct acpi_madt_generic_translator *its_entry;
diff --git a/drivers/irqchip/irq-gic-v3-its-platform-msi.c b/drivers/irqchip/irq-gic-v3-its-platform-msi.c
index 7b8e87b493fe..9cdcda5bb3bd 100644
--- a/drivers/irqchip/irq-gic-v3-its-platform-msi.c
+++ b/drivers/irqchip/irq-gic-v3-its-platform-msi.c
@@ -117,7 +117,7 @@ static int __init its_pmsi_init_one(struct fwnode_handle *fwnode,
#ifdef CONFIG_ACPI
static int __init
-its_pmsi_parse_madt(struct acpi_subtable_header *header,
+its_pmsi_parse_madt(union acpi_subtable_headers *header,
const unsigned long end)
{
struct acpi_madt_generic_translator *its_entry;
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index 7577755bdcf4..128ac893d7e4 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -3830,13 +3830,13 @@ static int __init acpi_get_its_numa_node(u32 its_id)
return NUMA_NO_NODE;
}
-static int __init gic_acpi_match_srat_its(struct acpi_subtable_header *header,
+static int __init gic_acpi_match_srat_its(union acpi_subtable_headers *header,
const unsigned long end)
{
return 0;
}
-static int __init gic_acpi_parse_srat_its(struct acpi_subtable_header *header,
+static int __init gic_acpi_parse_srat_its(union acpi_subtable_headers *header,
const unsigned long end)
{
int node;
@@ -3903,7 +3903,7 @@ static int __init acpi_get_its_numa_node(u32 its_id) { return NUMA_NO_NODE; }
static void __init acpi_its_srat_maps_free(void) { }
#endif
-static int __init gic_acpi_parse_madt_its(struct acpi_subtable_header *header,
+static int __init gic_acpi_parse_madt_its(union acpi_subtable_headers *header,
const unsigned long end)
{
struct acpi_madt_generic_translator *its_entry;
diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
index 15e55d327505..f44cd89cfc40 100644
--- a/drivers/irqchip/irq-gic-v3.c
+++ b/drivers/irqchip/irq-gic-v3.c
@@ -1593,7 +1593,7 @@ gic_acpi_register_redist(phys_addr_t phys_base, void __iomem *redist_base)
}
static int __init
-gic_acpi_parse_madt_redist(struct acpi_subtable_header *header,
+gic_acpi_parse_madt_redist(union acpi_subtable_headers *header,
const unsigned long end)
{
struct acpi_madt_generic_redistributor *redist =
@@ -1611,7 +1611,7 @@ gic_acpi_parse_madt_redist(struct acpi_subtable_header *header,
}
static int __init
-gic_acpi_parse_madt_gicc(struct acpi_subtable_header *header,
+gic_acpi_parse_madt_gicc(union acpi_subtable_headers *header,
const unsigned long end)
{
struct acpi_madt_generic_interrupt *gicc =
@@ -1653,14 +1653,14 @@ static int __init gic_acpi_collect_gicr_base(void)
return -ENODEV;
}
-static int __init gic_acpi_match_gicr(struct acpi_subtable_header *header,
+static int __init gic_acpi_match_gicr(union acpi_subtable_headers *header,
const unsigned long end)
{
/* Subtable presence means that redist exists, that's it */
return 0;
}
-static int __init gic_acpi_match_gicc(struct acpi_subtable_header *header,
+static int __init gic_acpi_match_gicc(union acpi_subtable_headers *header,
const unsigned long end)
{
struct acpi_madt_generic_interrupt *gicc =
@@ -1726,7 +1726,7 @@ static bool __init acpi_validate_gic_table(struct acpi_subtable_header *header,
return true;
}
-static int __init gic_acpi_parse_virt_madt_gicc(struct acpi_subtable_header *header,
+static int __init gic_acpi_parse_virt_madt_gicc(union acpi_subtable_headers *header,
const unsigned long end)
{
struct acpi_madt_generic_interrupt *gicc =
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index fd3110c171ba..c6dbe5018972 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -1495,7 +1495,7 @@ static struct
} acpi_data __initdata;
static int __init
-gic_acpi_parse_madt_cpu(struct acpi_subtable_header *header,
+gic_acpi_parse_madt_cpu(union acpi_subtable_headers *header,
const unsigned long end)
{
struct acpi_madt_generic_interrupt *processor;
@@ -1527,7 +1527,7 @@ gic_acpi_parse_madt_cpu(struct acpi_subtable_header *header,
}
/* The things you have to do to just *count* something... */
-static int __init acpi_dummy_func(struct acpi_subtable_header *header,
+static int __init acpi_dummy_func(union acpi_subtable_headers *header,
const unsigned long end)
{
return 0;
diff --git a/drivers/mailbox/pcc.c b/drivers/mailbox/pcc.c
index 256f18b67e8a..08a0a3517138 100644
--- a/drivers/mailbox/pcc.c
+++ b/drivers/mailbox/pcc.c
@@ -382,7 +382,7 @@ static const struct mbox_chan_ops pcc_chan_ops = {
*
* This gets called for each entry in the PCC table.
*/
-static int parse_pcc_subspace(struct acpi_subtable_header *header,
+static int parse_pcc_subspace(union acpi_subtable_headers *header,
const unsigned long end)
{
struct acpi_pcct_subspace *ss = (struct acpi_pcct_subspace *) header;