#include <asm/desc.h>
#include <asm/nmi.h>
#include <asm/irq.h>
-#include <asm/idle.h>
#include <asm/realmode.h>
#include <asm/cpu.h>
#include <asm/numa.h>
unsigned int __max_logical_packages __read_mostly;
EXPORT_SYMBOL(__max_logical_packages);
static unsigned int logical_packages __read_mostly;
-static bool logical_packages_frozen __read_mostly;
/* Maximum number of SMT threads on any online core */
int __max_smt_threads __read_mostly;
+/* Flag to indicate if a complete sched domain rebuild is required */
+bool x86_topology_update;
+
+int arch_update_cpu_topology(void)
+{
+ int retval = x86_topology_update;
+
+ x86_topology_update = false;
+ return retval;
+}
+
static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip)
{
unsigned long flags;
cpu_startup_entry(CPUHP_AP_ONLINE_IDLE);
}
-int topology_update_package_map(unsigned int apicid, unsigned int cpu)
+/**
+ * topology_update_package_map - Update the physical to logical package map
+ * @pkg: The physical package id as retrieved via CPUID
+ * @cpu: The cpu for which this is updated
+ */
+int topology_update_package_map(unsigned int pkg, unsigned int cpu)
{
- unsigned int new, pkg = apicid >> boot_cpu_data.x86_coreid_bits;
+ unsigned int new;
/* Called from early boot ? */
if (!physical_package_map)
if (test_and_set_bit(pkg, physical_package_map))
goto found;
- if (logical_packages_frozen) {
- physical_to_logical_pkg[pkg] = -1;
- pr_warn("APIC(%x) Package %u exceeds logical package max\n",
- apicid, pkg);
+ if (logical_packages >= __max_logical_packages) {
+ pr_warn("Package %u of CPU %u exceeds BIOS package data %u.\n",
+ logical_packages, cpu, __max_logical_packages);
return -ENOSPC;
}
new = logical_packages++;
- pr_info("APIC(%x) Converting physical %u to logical package %u\n",
- apicid, pkg, new);
+ if (new != pkg) {
+ pr_info("CPU %u Converting physical %u to logical package %u\n",
+ cpu, pkg, new);
+ }
physical_to_logical_pkg[pkg] = new;
found:
}
EXPORT_SYMBOL(topology_phys_to_logical_pkg);
-static void __init smp_init_package_map(void)
+static void __init smp_init_package_map(struct cpuinfo_x86 *c, unsigned int cpu)
{
- unsigned int ncpus, cpu;
+ unsigned int ncpus;
size_t size;
/*
size = BITS_TO_LONGS(max_physical_pkg_id) * sizeof(unsigned long);
physical_package_map = kzalloc(size, GFP_KERNEL);
- for_each_present_cpu(cpu) {
- unsigned int apicid = apic->cpu_present_to_apicid(cpu);
-
- if (apicid == BAD_APICID || !apic->apic_id_valid(apicid))
- continue;
- if (!topology_update_package_map(apicid, cpu))
- continue;
- pr_warn("CPU %u APICId %x disabled\n", cpu, apicid);
- per_cpu(x86_bios_cpu_apicid, cpu) = BAD_APICID;
- set_cpu_possible(cpu, false);
- set_cpu_present(cpu, false);
- }
-
- if (logical_packages > __max_logical_packages) {
- pr_warn("Detected more packages (%u), then computed by BIOS data (%u).\n",
- logical_packages, __max_logical_packages);
- logical_packages_frozen = true;
- __max_logical_packages = logical_packages;
- }
-
pr_info("Max logical packages: %u\n", __max_logical_packages);
+
+ topology_update_package_map(c->phys_proc_id, cpu);
}
void __init smp_store_boot_cpu_info(void)
*c = boot_cpu_data;
c->cpu_index = id;
- smp_init_package_map();
+ smp_init_package_map(c, id);
}
/*
int cpu1 = c->cpu_index, cpu2 = o->cpu_index;
if (c->phys_proc_id == o->phys_proc_id &&
- per_cpu(cpu_llc_id, cpu1) == per_cpu(cpu_llc_id, cpu2) &&
- c->cpu_core_id == o->cpu_core_id)
- return topology_sane(c, o, "smt");
+ per_cpu(cpu_llc_id, cpu1) == per_cpu(cpu_llc_id, cpu2)) {
+ if (c->cpu_core_id == o->cpu_core_id)
+ return topology_sane(c, o, "smt");
+
+ if ((c->cu_id != 0xff) &&
+ (o->cu_id != 0xff) &&
+ (c->cu_id == o->cu_id))
+ return topology_sane(c, o, "smt");
+ }
} else if (c->phys_proc_id == o->phys_proc_id &&
c->cpu_core_id == o->cpu_core_id) {
return false;
}
+#if defined(CONFIG_SCHED_SMT) || defined(CONFIG_SCHED_MC)
+static inline int x86_sched_itmt_flags(void)
+{
+ return sysctl_sched_itmt_enabled ? SD_ASYM_PACKING : 0;
+}
+
+#ifdef CONFIG_SCHED_MC
+static int x86_core_flags(void)
+{
+ return cpu_core_flags() | x86_sched_itmt_flags();
+}
+#endif
+#ifdef CONFIG_SCHED_SMT
+static int x86_smt_flags(void)
+{
+ return cpu_smt_flags() | x86_sched_itmt_flags();
+}
+#endif
+#endif
+
static struct sched_domain_topology_level x86_numa_in_package_topology[] = {
#ifdef CONFIG_SCHED_SMT
- { cpu_smt_mask, cpu_smt_flags, SD_INIT_NAME(SMT) },
+ { cpu_smt_mask, x86_smt_flags, SD_INIT_NAME(SMT) },
#endif
#ifdef CONFIG_SCHED_MC
- { cpu_coregroup_mask, cpu_core_flags, SD_INIT_NAME(MC) },
+ { cpu_coregroup_mask, x86_core_flags, SD_INIT_NAME(MC) },
#endif
{ NULL, },
};
static struct sched_domain_topology_level x86_topology[] = {
#ifdef CONFIG_SCHED_SMT
- { cpu_smt_mask, cpu_smt_flags, SD_INIT_NAME(SMT) },
+ { cpu_smt_mask, x86_smt_flags, SD_INIT_NAME(SMT) },
#endif
#ifdef CONFIG_SCHED_MC
- { cpu_coregroup_mask, cpu_core_flags, SD_INIT_NAME(MC) },
+ { cpu_coregroup_mask, x86_core_flags, SD_INIT_NAME(MC) },
#endif
{ cpu_cpu_mask, SD_INIT_NAME(DIE) },
{ NULL, },
return (send_status | accept_status);
}
-void smp_announce(void)
-{
- int num_nodes = num_online_nodes();
-
- printk(KERN_INFO "x86: Booted up %d node%s, %d CPUs\n",
- num_nodes, (num_nodes > 1 ? "s" : ""), num_online_cpus());
-}
-
/* reduce the number of lines printed when booting a large cpu count system */
static void announce_cpu(int cpu, int apicid)
{
int cpu0_nmi_registered = 0;
unsigned long timeout;
- idle->thread.sp = (unsigned long) (((struct pt_regs *)
- (THREAD_SIZE + task_stack_page(idle))) - 1);
-
+ idle->thread.sp = (unsigned long)task_pt_regs(idle);
early_gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu);
initial_code = (unsigned long)start_secondary;
initial_stack = idle->thread.sp;
return err;
/* the FPU context is blank, nobody can own it */
- __cpu_disable_lazy_restore(cpu);
+ per_cpu(fpu_fpregs_owner_ctx, cpu) = NULL;
common_cpu_up(cpu, tidle);
default_setup_apic_routing();
cpu0_logical_apicid = apic_bsp_setup(false);
- pr_info("CPU%d: ", 0);
+ pr_info("CPU0: ");
print_cpu_info(&cpu_data(0));
- if (is_uv_system())
- uv_system_init();
+ uv_system_init();
set_mtrr_aps_delayed_init();
possible = i;
}
+ nr_cpu_ids = possible;
+
pr_info("Allowing %d CPUs, %d hotplug CPUs\n",
possible, max_t(int, possible - num_processors, 0));
+ reset_cpu_possible_mask();
+
for (i = 0; i < possible; i++)
set_cpu_possible(i, true);
- for (; i < NR_CPUS; i++)
- set_cpu_possible(i, false);
-
- nr_cpu_ids = possible;
}
#ifdef CONFIG_HOTPLUG_CPU
{
idle_task_exit();
reset_lazy_tlbstate();
- amd_e400_remove_cpu(raw_smp_processor_id());
/* Ack it */
(void)cpu_report_death();
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