Merge master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb

[powerpc.git] / arch / powerpc / kernel / smp.c

diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 62dfc5b..d381ec9 100644 (file)
--- 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>
@@ -49,15 +50,16 @@
 #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();
@@ -451,10 +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
         */
@@ -553,6 +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