X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=arch%2Fpowerpc%2Fkernel%2Fsmp.c;h=c8458c531b255f3dbb97b94b5023ead71b6f5193;hb=088186ded490ced80758200cf8f906ed741df306;hp=1794a694a92868d75adbd5584b6b6ac4fa72f9a7;hpb=5ad570786158e327a1c5d32dd3d66f26d8de6340;p=powerpc.git

diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 1794a694a9..c8458c531b 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -31,6 +31,7 @@
 #include <linux/sysdev.h>
 #include <linux/cpu.h>
 #include <linux/notifier.h>
+#include <linux/topology.h>
 
 #include <asm/ptrace.h>
 #include <asm/atomic.h>
@@ -40,24 +41,25 @@
 #include <asm/prom.h>
 #include <asm/smp.h>
 #include <asm/time.h>
-#include <asm/xmon.h>
 #include <asm/machdep.h>
 #include <asm/cputable.h>
 #include <asm/system.h>
 #include <asm/mpic.h>
+#include <asm/vdso_datapage.h>
 #ifdef CONFIG_PPC64
 #include <asm/paca.h>
 #endif
 
-int smp_hw_index[NR_CPUS];
-struct thread_info *secondary_ti;
-
 #ifdef DEBUG
+#include <asm/udbg.h>
 #define DBG(fmt...) udbg_printf(fmt)
 #else
 #define DBG(fmt...)
 #endif
 
+int smp_hw_index[NR_CPUS];
+struct thread_info *secondary_ti;
+
 cpumask_t cpu_possible_map = CPU_MASK_NONE;
 cpumask_t cpu_online_map = CPU_MASK_NONE;
 cpumask_t cpu_sibling_map[NR_CPUS] = { [0 ... NR_CPUS-1] = CPU_MASK_NONE };
@@ -74,6 +76,8 @@ void smp_call_function_interrupt(void);
 
 int smt_enabled_at_boot = 1;
 
+static void (*crash_ipi_function_ptr)(struct pt_regs *) = NULL;
+
 #ifdef CONFIG_MPIC
 int __init smp_mpic_probe(void)
 {
@@ -122,11 +126,16 @@ void smp_message_recv(int msg, struct pt_regs *regs)
 		/* XXX Do we have to do this? */
 		set_need_resched();
 		break;
-#ifdef CONFIG_DEBUGGER
 	case PPC_MSG_DEBUGGER_BREAK:
+		if (crash_ipi_function_ptr) {
+			crash_ipi_function_ptr(regs);
+			break;
+		}
+#ifdef CONFIG_DEBUGGER
 		debugger_ipi(regs);
 		break;
-#endif
+#endif /* CONFIG_DEBUGGER */
+		/* FALLTHROUGH */
 	default:
 		printk("SMP %d: smp_message_recv(): unknown msg %d\n",
 		       smp_processor_id(), msg);
@@ -146,6 +155,17 @@ void smp_send_debugger_break(int cpu)
 }
 #endif
 
+#ifdef CONFIG_KEXEC
+void crash_send_ipi(void (*crash_ipi_callback)(struct pt_regs *))
+{
+	crash_ipi_function_ptr = crash_ipi_callback;
+	if (crash_ipi_callback) {
+		mb();
+		smp_ops->message_pass(MSG_ALL_BUT_SELF, PPC_MSG_DEBUGGER_BREAK);
+	}
+}
+#endif
+
 static void stop_this_cpu(void *dummy)
 {
 	local_irq_disable();
@@ -318,8 +338,8 @@ static void __init smp_create_idle(unsigned int cpu)
 #ifdef CONFIG_PPC64
 	paca[cpu].__current = p;
 #endif
-	current_set[cpu] = p->thread_info;
-	p->thread_info->cpu = cpu;
+	current_set[cpu] = task_thread_info(p);
+	task_thread_info(p)->cpu = cpu;
 }
 
 void __init smp_prepare_cpus(unsigned int max_cpus)
@@ -355,7 +375,7 @@ void __devinit smp_prepare_boot_cpu(void)
 #ifdef CONFIG_PPC64
 	paca[boot_cpuid].__current = current;
 #endif
-	current_set[boot_cpuid] = current->thread_info;
+	current_set[boot_cpuid] = task_thread_info(current);
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
@@ -369,9 +389,11 @@ int generic_cpu_disable(void)
 	if (cpu == boot_cpuid)
 		return -EBUSY;
 
-	systemcfg->processorCount--;
 	cpu_clear(cpu, cpu_online_map);
+#ifdef CONFIG_PPC64
+	vdso_data->processorCount--;
 	fixup_irqs(cpu_online_map);
+#endif
 	return 0;
 }
 
@@ -389,9 +411,11 @@ int generic_cpu_enable(unsigned int cpu)
 	while (!cpu_online(cpu))
 		cpu_relax();
 
+#ifdef CONFIG_PPC64
 	fixup_irqs(cpu_online_map);
 	/* counter the irq disable in fixup_irqs */
 	local_irq_enable();
+#endif
 	return 0;
 }
 
@@ -420,7 +444,9 @@ void generic_mach_cpu_die(void)
 	while (__get_cpu_var(cpu_state) != CPU_UP_PREPARE)
 		cpu_relax();
 
+#ifdef CONFIG_PPC64
 	flush_tlb_pending();
+#endif
 	cpu_set(cpu, cpu_online_map);
 	local_irq_enable();
 }
@@ -445,10 +471,6 @@ int __devinit __cpu_up(unsigned int cpu)
 	if (smp_ops->cpu_bootable && !smp_ops->cpu_bootable(cpu))
 		return -EINVAL;
 
-#ifdef CONFIG_PPC64
-	paca[cpu].default_decr = tb_ticks_per_jiffy;
-#endif
-
 	/* Make sure callin-map entry is 0 (can be leftover a CPU
 	 * hotplug
 	 */
@@ -511,6 +533,7 @@ int __devinit start_secondary(void *unused)
 
 	smp_store_cpu_info(cpu);
 	set_dec(tb_ticks_per_jiffy);
+	preempt_disable();
 	cpu_callin_map[cpu] = 1;
 
 	smp_ops->setup_cpu(cpu);
@@ -546,6 +569,8 @@ void __init smp_cpus_done(unsigned int max_cpus)
 	smp_ops->setup_cpu(boot_cpuid);
 
 	set_cpus_allowed(current, old_mask);
+
+	dump_numa_cpu_topology();
 }
 
 #ifdef CONFIG_HOTPLUG_CPU