#include <linux/cache.h>
#include <linux/profile.h>
#include <linux/errno.h>
-#include <linux/ftrace.h>
#include <linux/mm.h>
#include <linux/err.h>
#include <linux/cpu.h>
#include <asm/cacheflush.h>
#include <asm/cpu.h>
#include <asm/cputype.h>
+#include <asm/exception.h>
+#include <asm/topology.h>
#include <asm/mmu_context.h>
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
#include <asm/ptrace.h>
#include <asm/localtimer.h>
+#include <asm/smp_plat.h>
/*
* as from 2.5, kernels no longer have an init_tasks structure
}
#endif /* CONFIG_HOTPLUG_CPU */
+int __cpu_logical_map[NR_CPUS];
+
+void __init smp_setup_processor_id(void)
+{
+ int i;
+ u32 cpu = is_smp() ? read_cpuid_mpidr() & 0xff : 0;
+
+ cpu_logical_map(0) = cpu;
+ for (i = 1; i < NR_CPUS; ++i)
+ cpu_logical_map(i) = i == cpu ? 0 : i;
+
+ printk(KERN_INFO "Booting Linux on physical CPU %d\n", cpu);
+}
+
/*
* Called by both boot and secondaries to move global data into
* per-processor storage.
struct cpuinfo_arm *cpu_info = &per_cpu(cpu_data, cpuid);
cpu_info->loops_per_jiffy = loops_per_jiffy;
+
+ store_cpu_topology(cpuid);
}
/*
*/
platform_secondary_init(cpu);
- /*
- * Enable local interrupts.
- */
notify_cpu_starting(cpu);
- local_irq_enable();
- local_fiq_enable();
-
- /*
- * Setup the percpu timer for this CPU.
- */
- percpu_timer_setup();
calibrate_delay();
* before we continue.
*/
set_cpu_online(cpu, true);
+
+ /*
+ * Setup the percpu timer for this CPU.
+ */
+ percpu_timer_setup();
+
while (!cpu_active(cpu))
cpu_relax();
+ /*
+ * cpu_active bit is set, so it's safe to enalbe interrupts
+ * now.
+ */
+ local_irq_enable();
+ local_fiq_enable();
+
/*
* OK, it's off to the idle thread for us
*/
{
unsigned int ncores = num_possible_cpus();
+ init_cpu_topology();
+
smp_store_cpu_info(smp_processor_id());
/*
#ifdef CONFIG_LOCAL_TIMERS
asmlinkage void __exception_irq_entry do_local_timer(struct pt_regs *regs)
+{
+ handle_local_timer(regs);
+}
+
+void handle_local_timer(struct pt_regs *regs)
{
struct pt_regs *old_regs = set_irq_regs(regs);
int cpu = smp_processor_id();
}
#endif
-static DEFINE_SPINLOCK(stop_lock);
+static DEFINE_RAW_SPINLOCK(stop_lock);
/*
* ipi_cpu_stop - handle IPI from smp_send_stop()
{
if (system_state == SYSTEM_BOOTING ||
system_state == SYSTEM_RUNNING) {
- spin_lock(&stop_lock);
+ raw_spin_lock(&stop_lock);
printk(KERN_CRIT "CPU%u: stopping\n", cpu);
dump_stack();
- spin_unlock(&stop_lock);
+ raw_spin_unlock(&stop_lock);
}
set_cpu_online(cpu, false);
* Main handler for inter-processor interrupts
*/
asmlinkage void __exception_irq_entry do_IPI(int ipinr, struct pt_regs *regs)
+{
+ handle_IPI(ipinr, regs);
+}
+
+void handle_IPI(int ipinr, struct pt_regs *regs)
{
unsigned int cpu = smp_processor_id();
struct pt_regs *old_regs = set_irq_regs(regs);