X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=arch%2Fpowerpc%2Fkernel%2Fsmp.c;h=d381ec90b759e27fe5242d9f7c3e66bb4b7ca939;hb=593195f9b2309693f27b402f34573f7920b82c3e;hp=36d67a8d7cbbb1b1d2c798dc0958f4f5d792e756;hpb=3b44f137b9a846c5452d9e6e1271b79b1dbcc942;p=powerpc.git

diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 36d67a8d7c..d381ec90b7 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>
@@ -44,19 +45,21 @@
 #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 };
@@ -73,6 +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)
 {
@@ -121,11 +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);
@@ -145,6 +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();
@@ -368,9 +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;
 }
 
@@ -388,9 +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;
 }
 
@@ -419,7 +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();
 }
@@ -444,10 +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
 	 */
@@ -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