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-rw-r--r--arch/powerpc/kernel/Makefile1
-rw-r--r--arch/powerpc/kernel/align.c34
-rw-r--r--arch/powerpc/kernel/asm-offsets.c11
-rw-r--r--arch/powerpc/kernel/crash.c2
-rw-r--r--arch/powerpc/kernel/epapr_paravirt.c7
-rw-r--r--arch/powerpc/kernel/fadump.c4
-rw-r--r--arch/powerpc/kernel/kvm.c4
-rw-r--r--arch/powerpc/kernel/machine_kexec_64.c2
-rw-r--r--arch/powerpc/kernel/paca.c3
-rw-r--r--arch/powerpc/kernel/pci-common.c20
-rw-r--r--arch/powerpc/kernel/pci-hotplug.c3
-rw-r--r--arch/powerpc/kernel/pci_of_scan.c3
-rw-r--r--arch/powerpc/kernel/prom.c82
-rw-r--r--arch/powerpc/kernel/rtas.c2
-rw-r--r--arch/powerpc/kernel/smp.c31
15 files changed, 72 insertions, 137 deletions
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index fcc9a89a4695..fab19ec25597 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -2,6 +2,7 @@
# Makefile for the linux kernel.
#
+CFLAGS_prom.o = -I$(src)/../../../scripts/dtc/libfdt
CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"'
subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c
index 94908af308d8..34f55524d456 100644
--- a/arch/powerpc/kernel/align.c
+++ b/arch/powerpc/kernel/align.c
@@ -25,14 +25,13 @@
#include <asm/cputable.h>
#include <asm/emulated_ops.h>
#include <asm/switch_to.h>
+#include <asm/disassemble.h>
struct aligninfo {
unsigned char len;
unsigned char flags;
};
-#define IS_XFORM(inst) (((inst) >> 26) == 31)
-#define IS_DSFORM(inst) (((inst) >> 26) >= 56)
#define INVALID { 0, 0 }
@@ -192,37 +191,6 @@ static struct aligninfo aligninfo[128] = {
};
/*
- * Create a DSISR value from the instruction
- */
-static inline unsigned make_dsisr(unsigned instr)
-{
- unsigned dsisr;
-
-
- /* bits 6:15 --> 22:31 */
- dsisr = (instr & 0x03ff0000) >> 16;
-
- if (IS_XFORM(instr)) {
- /* bits 29:30 --> 15:16 */
- dsisr |= (instr & 0x00000006) << 14;
- /* bit 25 --> 17 */
- dsisr |= (instr & 0x00000040) << 8;
- /* bits 21:24 --> 18:21 */
- dsisr |= (instr & 0x00000780) << 3;
- } else {
- /* bit 5 --> 17 */
- dsisr |= (instr & 0x04000000) >> 12;
- /* bits 1: 4 --> 18:21 */
- dsisr |= (instr & 0x78000000) >> 17;
- /* bits 30:31 --> 12:13 */
- if (IS_DSFORM(instr))
- dsisr |= (instr & 0x00000003) << 18;
- }
-
- return dsisr;
-}
-
-/*
* The dcbz (data cache block zero) instruction
* gives an alignment fault if used on non-cacheable
* memory. We handle the fault mainly for the
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index dba8140ebc20..93e1465c8496 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -54,6 +54,7 @@
#endif
#if defined(CONFIG_KVM) && defined(CONFIG_PPC_BOOK3S)
#include <asm/kvm_book3s.h>
+#include <asm/kvm_ppc.h>
#endif
#ifdef CONFIG_PPC32
@@ -445,7 +446,9 @@ int main(void)
DEFINE(VCPU_XER, offsetof(struct kvm_vcpu, arch.xer));
DEFINE(VCPU_CTR, offsetof(struct kvm_vcpu, arch.ctr));
DEFINE(VCPU_LR, offsetof(struct kvm_vcpu, arch.lr));
+#ifdef CONFIG_PPC_BOOK3S
DEFINE(VCPU_TAR, offsetof(struct kvm_vcpu, arch.tar));
+#endif
DEFINE(VCPU_CR, offsetof(struct kvm_vcpu, arch.cr));
DEFINE(VCPU_PC, offsetof(struct kvm_vcpu, arch.pc));
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
@@ -467,6 +470,9 @@ int main(void)
DEFINE(VCPU_SHARED, offsetof(struct kvm_vcpu, arch.shared));
DEFINE(VCPU_SHARED_MSR, offsetof(struct kvm_vcpu_arch_shared, msr));
DEFINE(VCPU_SHADOW_MSR, offsetof(struct kvm_vcpu, arch.shadow_msr));
+#if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
+ DEFINE(VCPU_SHAREDBE, offsetof(struct kvm_vcpu, arch.shared_big_endian));
+#endif
DEFINE(VCPU_SHARED_MAS0, offsetof(struct kvm_vcpu_arch_shared, mas0));
DEFINE(VCPU_SHARED_MAS1, offsetof(struct kvm_vcpu_arch_shared, mas1));
@@ -493,7 +499,6 @@ int main(void)
DEFINE(VCPU_DAR, offsetof(struct kvm_vcpu, arch.shregs.dar));
DEFINE(VCPU_VPA, offsetof(struct kvm_vcpu, arch.vpa.pinned_addr));
DEFINE(VCPU_VPA_DIRTY, offsetof(struct kvm_vcpu, arch.vpa.dirty));
- DEFINE(VCPU_INTR_MSR, offsetof(struct kvm_vcpu, arch.intr_msr));
#endif
#ifdef CONFIG_PPC_BOOK3S
DEFINE(VCPU_VCPUID, offsetof(struct kvm_vcpu, vcpu_id));
@@ -528,11 +533,13 @@ int main(void)
DEFINE(VCPU_SLB_NR, offsetof(struct kvm_vcpu, arch.slb_nr));
DEFINE(VCPU_FAULT_DSISR, offsetof(struct kvm_vcpu, arch.fault_dsisr));
DEFINE(VCPU_FAULT_DAR, offsetof(struct kvm_vcpu, arch.fault_dar));
+ DEFINE(VCPU_INTR_MSR, offsetof(struct kvm_vcpu, arch.intr_msr));
DEFINE(VCPU_LAST_INST, offsetof(struct kvm_vcpu, arch.last_inst));
DEFINE(VCPU_TRAP, offsetof(struct kvm_vcpu, arch.trap));
DEFINE(VCPU_CFAR, offsetof(struct kvm_vcpu, arch.cfar));
DEFINE(VCPU_PPR, offsetof(struct kvm_vcpu, arch.ppr));
DEFINE(VCPU_FSCR, offsetof(struct kvm_vcpu, arch.fscr));
+ DEFINE(VCPU_SHADOW_FSCR, offsetof(struct kvm_vcpu, arch.shadow_fscr));
DEFINE(VCPU_PSPB, offsetof(struct kvm_vcpu, arch.pspb));
DEFINE(VCPU_EBBHR, offsetof(struct kvm_vcpu, arch.ebbhr));
DEFINE(VCPU_EBBRR, offsetof(struct kvm_vcpu, arch.ebbrr));
@@ -614,6 +621,7 @@ int main(void)
#ifdef CONFIG_PPC64
SVCPU_FIELD(SVCPU_SLB, slb);
SVCPU_FIELD(SVCPU_SLB_MAX, slb_max);
+ SVCPU_FIELD(SVCPU_SHADOW_FSCR, shadow_fscr);
#endif
HSTATE_FIELD(HSTATE_HOST_R1, host_r1);
@@ -649,6 +657,7 @@ int main(void)
#ifdef CONFIG_PPC_BOOK3S_64
HSTATE_FIELD(HSTATE_CFAR, cfar);
HSTATE_FIELD(HSTATE_PPR, ppr);
+ HSTATE_FIELD(HSTATE_HOST_FSCR, host_fscr);
#endif /* CONFIG_PPC_BOOK3S_64 */
#else /* CONFIG_PPC_BOOK3S */
diff --git a/arch/powerpc/kernel/crash.c b/arch/powerpc/kernel/crash.c
index 18d7c80ddeb9..51dbace3269b 100644
--- a/arch/powerpc/kernel/crash.c
+++ b/arch/powerpc/kernel/crash.c
@@ -81,7 +81,7 @@ void crash_ipi_callback(struct pt_regs *regs)
}
atomic_inc(&cpus_in_crash);
- smp_mb__after_atomic_inc();
+ smp_mb__after_atomic();
/*
* Starting the kdump boot.
diff --git a/arch/powerpc/kernel/epapr_paravirt.c b/arch/powerpc/kernel/epapr_paravirt.c
index 7898be90f2dc..60d1a2259dbe 100644
--- a/arch/powerpc/kernel/epapr_paravirt.c
+++ b/arch/powerpc/kernel/epapr_paravirt.c
@@ -36,7 +36,7 @@ static int __init early_init_dt_scan_epapr(unsigned long node,
int depth, void *data)
{
const u32 *insts;
- unsigned long len;
+ int len;
int i;
insts = of_get_flat_dt_prop(node, "hcall-instructions", &len);
@@ -47,9 +47,10 @@ static int __init early_init_dt_scan_epapr(unsigned long node,
return -1;
for (i = 0; i < (len / 4); i++) {
- patch_instruction(epapr_hypercall_start + i, insts[i]);
+ u32 inst = be32_to_cpu(insts[i]);
+ patch_instruction(epapr_hypercall_start + i, inst);
#if !defined(CONFIG_64BIT) || defined(CONFIG_PPC_BOOK3E_64)
- patch_instruction(epapr_ev_idle_start + i, insts[i]);
+ patch_instruction(epapr_ev_idle_start + i, inst);
#endif
}
diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c
index 2230fd0ca3e4..7213d930918d 100644
--- a/arch/powerpc/kernel/fadump.c
+++ b/arch/powerpc/kernel/fadump.c
@@ -55,9 +55,9 @@ int crash_mem_ranges;
int __init early_init_dt_scan_fw_dump(unsigned long node,
const char *uname, int depth, void *data)
{
- __be32 *sections;
+ const __be32 *sections;
int i, num_sections;
- unsigned long size;
+ int size;
const int *token;
if (depth != 1 || strcmp(uname, "rtas") != 0)
diff --git a/arch/powerpc/kernel/kvm.c b/arch/powerpc/kernel/kvm.c
index 6a0175297b0d..33aa4ddf597d 100644
--- a/arch/powerpc/kernel/kvm.c
+++ b/arch/powerpc/kernel/kvm.c
@@ -74,7 +74,7 @@
#define KVM_INST_MTSRIN 0x7c0001e4
static bool kvm_patching_worked = true;
-static char kvm_tmp[1024 * 1024];
+char kvm_tmp[1024 * 1024];
static int kvm_tmp_index;
static inline void kvm_patch_ins(u32 *inst, u32 new_inst)
@@ -417,7 +417,7 @@ static void kvm_map_magic_page(void *data)
ulong out[8];
in[0] = KVM_MAGIC_PAGE;
- in[1] = KVM_MAGIC_PAGE;
+ in[1] = KVM_MAGIC_PAGE | MAGIC_PAGE_FLAG_NOT_MAPPED_NX;
epapr_hypercall(in, out, KVM_HCALL_TOKEN(KVM_HC_PPC_MAP_MAGIC_PAGE));
diff --git a/arch/powerpc/kernel/machine_kexec_64.c b/arch/powerpc/kernel/machine_kexec_64.c
index 59d229a2a3e0..879b3aacac32 100644
--- a/arch/powerpc/kernel/machine_kexec_64.c
+++ b/arch/powerpc/kernel/machine_kexec_64.c
@@ -237,7 +237,7 @@ static void wake_offline_cpus(void)
if (!cpu_online(cpu)) {
printk(KERN_INFO "kexec: Waking offline cpu %d.\n",
cpu);
- cpu_up(cpu);
+ WARN_ON(cpu_up(cpu));
}
}
}
diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c
index ad302f845e5d..d6e195e8cd4c 100644
--- a/arch/powerpc/kernel/paca.c
+++ b/arch/powerpc/kernel/paca.c
@@ -98,6 +98,9 @@ static inline void free_lppacas(void) { }
/*
* 3 persistent SLBs are registered here. The buffer will be zero
* initially, hence will all be invaild until we actually write them.
+ *
+ * If you make the number of persistent SLB entries dynamic, please also
+ * update PR KVM to flush and restore them accordingly.
*/
static struct slb_shadow *slb_shadow;
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index d9476c1fc959..24d342e91790 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -201,26 +201,6 @@ struct pci_controller* pci_find_hose_for_OF_device(struct device_node* node)
return NULL;
}
-static ssize_t pci_show_devspec(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct pci_dev *pdev;
- struct device_node *np;
-
- pdev = to_pci_dev (dev);
- np = pci_device_to_OF_node(pdev);
- if (np == NULL || np->full_name == NULL)
- return 0;
- return sprintf(buf, "%s", np->full_name);
-}
-static DEVICE_ATTR(devspec, S_IRUGO, pci_show_devspec, NULL);
-
-/* Add sysfs properties */
-int pcibios_add_platform_entries(struct pci_dev *pdev)
-{
- return device_create_file(&pdev->dev, &dev_attr_devspec);
-}
-
/*
* Reads the interrupt pin to determine if interrupt is use by card.
* If the interrupt is used, then gets the interrupt line from the
diff --git a/arch/powerpc/kernel/pci-hotplug.c b/arch/powerpc/kernel/pci-hotplug.c
index c1e17ae68a08..5b789177aa29 100644
--- a/arch/powerpc/kernel/pci-hotplug.c
+++ b/arch/powerpc/kernel/pci-hotplug.c
@@ -98,8 +98,7 @@ void pcibios_add_pci_devices(struct pci_bus * bus)
max = bus->busn_res.start;
for (pass = 0; pass < 2; pass++) {
list_for_each_entry(dev, &bus->devices, bus_list) {
- if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
- dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)
+ if (pci_is_bridge(dev))
max = pci_scan_bridge(bus, dev,
max, pass);
}
diff --git a/arch/powerpc/kernel/pci_of_scan.c b/arch/powerpc/kernel/pci_of_scan.c
index 83c26d829991..059e244484fe 100644
--- a/arch/powerpc/kernel/pci_of_scan.c
+++ b/arch/powerpc/kernel/pci_of_scan.c
@@ -362,8 +362,7 @@ static void __of_scan_bus(struct device_node *node, struct pci_bus *bus,
/* Now scan child busses */
list_for_each_entry(dev, &bus->devices, bus_list) {
- if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
- dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) {
+ if (pci_is_bridge(dev)) {
of_scan_pci_bridge(dev);
}
}
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 668aa4791fd7..613a860a203c 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -29,11 +29,11 @@
#include <linux/bitops.h>
#include <linux/export.h>
#include <linux/kexec.h>
-#include <linux/debugfs.h>
#include <linux/irq.h>
#include <linux/memblock.h>
#include <linux/of.h>
#include <linux/of_fdt.h>
+#include <linux/libfdt.h>
#include <asm/prom.h>
#include <asm/rtas.h>
@@ -118,14 +118,14 @@ static void __init move_device_tree(void)
DBG("-> move_device_tree\n");
start = __pa(initial_boot_params);
- size = be32_to_cpu(initial_boot_params->totalsize);
+ size = fdt_totalsize(initial_boot_params);
if ((memory_limit && (start + size) > PHYSICAL_START + memory_limit) ||
overlaps_crashkernel(start, size) ||
overlaps_initrd(start, size)) {
p = __va(memblock_alloc(size, PAGE_SIZE));
memcpy(p, initial_boot_params, size);
- initial_boot_params = (struct boot_param_header *)p;
+ initial_boot_params = p;
DBG("Moved device tree to 0x%p\n", p);
}
@@ -163,7 +163,7 @@ static struct ibm_pa_feature {
{CPU_FTR_REAL_LE, PPC_FEATURE_TRUE_LE, 5, 0, 0},
};
-static void __init scan_features(unsigned long node, unsigned char *ftrs,
+static void __init scan_features(unsigned long node, const unsigned char *ftrs,
unsigned long tablelen,
struct ibm_pa_feature *fp,
unsigned long ft_size)
@@ -202,8 +202,8 @@ static void __init scan_features(unsigned long node, unsigned char *ftrs,
static void __init check_cpu_pa_features(unsigned long node)
{
- unsigned char *pa_ftrs;
- unsigned long tablelen;
+ const unsigned char *pa_ftrs;
+ int tablelen;
pa_ftrs = of_get_flat_dt_prop(node, "ibm,pa-features", &tablelen);
if (pa_ftrs == NULL)
@@ -216,7 +216,7 @@ static void __init check_cpu_pa_features(unsigned long node)
#ifdef CONFIG_PPC_STD_MMU_64
static void __init check_cpu_slb_size(unsigned long node)
{
- __be32 *slb_size_ptr;
+ const __be32 *slb_size_ptr;
slb_size_ptr = of_get_flat_dt_prop(node, "slb-size", NULL);
if (slb_size_ptr != NULL) {
@@ -257,7 +257,7 @@ static struct feature_property {
static inline void identical_pvr_fixup(unsigned long node)
{
unsigned int pvr;
- char *model = of_get_flat_dt_prop(node, "model", NULL);
+ const char *model = of_get_flat_dt_prop(node, "model", NULL);
/*
* Since 440GR(x)/440EP(x) processors have the same pvr,
@@ -295,11 +295,11 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
const char *uname, int depth,
void *data)
{
- char *type = of_get_flat_dt_prop(node, "device_type", NULL);
+ const char *type = of_get_flat_dt_prop(node, "device_type", NULL);
const __be32 *prop;
const __be32 *intserv;
int i, nthreads;
- unsigned long len;
+ int len;
int found = -1;
int found_thread = 0;
@@ -325,9 +325,9 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
* version 2 of the kexec param format adds the phys cpuid of
* booted proc.
*/
- if (be32_to_cpu(initial_boot_params->version) >= 2) {
+ if (fdt_version(initial_boot_params) >= 2) {
if (be32_to_cpu(intserv[i]) ==
- be32_to_cpu(initial_boot_params->boot_cpuid_phys)) {
+ fdt_boot_cpuid_phys(initial_boot_params)) {
found = boot_cpu_count;
found_thread = i;
}
@@ -392,7 +392,7 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
int __init early_init_dt_scan_chosen_ppc(unsigned long node, const char *uname,
int depth, void *data)
{
- unsigned long *lprop; /* All these set by kernel, so no need to convert endian */
+ const unsigned long *lprop; /* All these set by kernel, so no need to convert endian */
/* Use common scan routine to determine if this is the chosen node */
if (early_init_dt_scan_chosen(node, uname, depth, data) == 0)
@@ -443,8 +443,9 @@ int __init early_init_dt_scan_chosen_ppc(unsigned long node, const char *uname,
*/
static int __init early_init_dt_scan_drconf_memory(unsigned long node)
{
- __be32 *dm, *ls, *usm;
- unsigned long l, n, flags;
+ const __be32 *dm, *ls, *usm;
+ int l;
+ unsigned long n, flags;
u64 base, size, memblock_size;
unsigned int is_kexec_kdump = 0, rngs;
@@ -564,9 +565,12 @@ void __init early_init_dt_add_memory_arch(u64 base, u64 size)
static void __init early_reserve_mem_dt(void)
{
- unsigned long i, len, dt_root;
+ unsigned long i, dt_root;
+ int len;
const __be32 *prop;
+ early_init_fdt_scan_reserved_mem();
+
dt_root = of_get_flat_dt_root();
prop = of_get_flat_dt_prop(dt_root, "reserved-ranges", &len);
@@ -589,24 +593,14 @@ static void __init early_reserve_mem_dt(void)
memblock_reserve(base, size);
}
}
-
- early_init_fdt_scan_reserved_mem();
}
static void __init early_reserve_mem(void)
{
- u64 base, size;
__be64 *reserve_map;
- unsigned long self_base;
- unsigned long self_size;
reserve_map = (__be64 *)(((unsigned long)initial_boot_params) +
- be32_to_cpu(initial_boot_params->off_mem_rsvmap));
-
- /* before we do anything, lets reserve the dt blob */
- self_base = __pa((unsigned long)initial_boot_params);
- self_size = be32_to_cpu(initial_boot_params->totalsize);
- memblock_reserve(self_base, self_size);
+ fdt_off_mem_rsvmap(initial_boot_params));
/* Look for the new "reserved-regions" property in the DT */
early_reserve_mem_dt();
@@ -636,26 +630,12 @@ static void __init early_reserve_mem(void)
size_32 = be32_to_cpup(reserve_map_32++);
if (size_32 == 0)
break;
- /* skip if the reservation is for the blob */
- if (base_32 == self_base && size_32 == self_size)
- continue;
DBG("reserving: %x -> %x\n", base_32, size_32);
memblock_reserve(base_32, size_32);
}
return;
}
#endif
- DBG("Processing reserve map\n");
-
- /* Handle the reserve map in the fdt blob if it exists */
- while (1) {
- base = be64_to_cpup(reserve_map++);
- size = be64_to_cpup(reserve_map++);
- if (size == 0)
- break;
- DBG("reserving: %llx -> %llx\n", base, size);
- memblock_reserve(base, size);
- }
}
void __init early_init_devtree(void *params)
@@ -922,23 +902,3 @@ bool arch_match_cpu_phys_id(int cpu, u64 phys_id)
{
return (int)phys_id == get_hard_smp_processor_id(cpu);
}
-
-#if defined(CONFIG_DEBUG_FS) && defined(DEBUG)
-static struct debugfs_blob_wrapper flat_dt_blob;
-
-static int __init export_flat_device_tree(void)
-{
- struct dentry *d;
-
- flat_dt_blob.data = initial_boot_params;
- flat_dt_blob.size = be32_to_cpu(initial_boot_params->totalsize);
-
- d = debugfs_create_blob("flat-device-tree", S_IFREG | S_IRUSR,
- powerpc_debugfs_root, &flat_dt_blob);
- if (!d)
- return 1;
-
- return 0;
-}
-__initcall(export_flat_device_tree);
-#endif
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 8cd5ed049b5d..8b4c857c1421 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -1142,7 +1142,7 @@ void __init rtas_initialize(void)
int __init early_init_dt_scan_rtas(unsigned long node,
const char *uname, int depth, void *data)
{
- u32 *basep, *entryp, *sizep;
+ const u32 *basep, *entryp, *sizep;
if (depth != 1 || strcmp(uname, "rtas") != 0)
return 0;
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index e2a4232c5871..10ffffef0414 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -766,6 +766,28 @@ int setup_profiling_timer(unsigned int multiplier)
return 0;
}
+#ifdef CONFIG_SCHED_SMT
+/* cpumask of CPUs with asymetric SMT dependancy */
+static const int powerpc_smt_flags(void)
+{
+ int flags = SD_SHARE_CPUPOWER | SD_SHARE_PKG_RESOURCES;
+
+ if (cpu_has_feature(CPU_FTR_ASYM_SMT)) {
+ printk_once(KERN_INFO "Enabling Asymmetric SMT scheduling\n");
+ flags |= SD_ASYM_PACKING;
+ }
+ return flags;
+}
+#endif
+
+static struct sched_domain_topology_level powerpc_topology[] = {
+#ifdef CONFIG_SCHED_SMT
+ { cpu_smt_mask, powerpc_smt_flags, SD_INIT_NAME(SMT) },
+#endif
+ { cpu_cpu_mask, SD_INIT_NAME(DIE) },
+ { NULL, },
+};
+
void __init smp_cpus_done(unsigned int max_cpus)
{
cpumask_var_t old_mask;
@@ -790,15 +812,8 @@ void __init smp_cpus_done(unsigned int max_cpus)
dump_numa_cpu_topology();
-}
+ set_sched_topology(powerpc_topology);
-int arch_sd_sibling_asym_packing(void)
-{
- if (cpu_has_feature(CPU_FTR_ASYM_SMT)) {
- printk_once(KERN_INFO "Enabling Asymmetric SMT scheduling\n");
- return SD_ASYM_PACKING;
- }
- return 0;
}
#ifdef CONFIG_HOTPLUG_CPU
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-30 13:26:57 +0000