X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fpowerpc%2Fkernel%2Fsmp.c;h=0e8beca460af59d8b814e99701a1bc65560ba4ba;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=13595a64f013a2c1b31f2ce0d7cf86be2b1c3ae9;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git

diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 13595a64f..0e8beca46 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -17,7 +17,6 @@
 
 #undef DEBUG
 
-#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/sched.h>
@@ -66,6 +65,7 @@ cpumask_t cpu_sibling_map[NR_CPUS] = { [0 ... NR_CPUS-1] = CPU_MASK_NONE };
 
 EXPORT_SYMBOL(cpu_online_map);
 EXPORT_SYMBOL(cpu_possible_map);
+EXPORT_SYMBOL(cpu_sibling_map);
 
 /* SMP operations for this machine */
 struct smp_ops_t *smp_ops;
@@ -116,7 +116,7 @@ void __devinit smp_generic_kick_cpu(int nr)
 }
 #endif
 
-void smp_message_recv(int msg, struct pt_regs *regs)
+void smp_message_recv(int msg)
 {
 	switch(msg) {
 	case PPC_MSG_CALL_FUNCTION:
@@ -128,11 +128,11 @@ void smp_message_recv(int msg, struct pt_regs *regs)
 		break;
 	case PPC_MSG_DEBUGGER_BREAK:
 		if (crash_ipi_function_ptr) {
-			crash_ipi_function_ptr(regs);
+			crash_ipi_function_ptr(get_irq_regs());
 			break;
 		}
 #ifdef CONFIG_DEBUGGER
-		debugger_ipi(regs);
+		debugger_ipi(get_irq_regs());
 		break;
 #endif /* CONFIG_DEBUGGER */
 		/* FALLTHROUGH */
@@ -145,13 +145,15 @@ void smp_message_recv(int msg, struct pt_regs *regs)
 
 void smp_send_reschedule(int cpu)
 {
-	smp_ops->message_pass(cpu, PPC_MSG_RESCHEDULE);
+	if (likely(smp_ops))
+		smp_ops->message_pass(cpu, PPC_MSG_RESCHEDULE);
 }
 
 #ifdef CONFIG_DEBUGGER
 void smp_send_debugger_break(int cpu)
 {
-	smp_ops->message_pass(cpu, PPC_MSG_DEBUGGER_BREAK);
+	if (likely(smp_ops))
+		smp_ops->message_pass(cpu, PPC_MSG_DEBUGGER_BREAK);
 }
 #endif
 
@@ -159,7 +161,7 @@ void smp_send_debugger_break(int cpu)
 void crash_send_ipi(void (*crash_ipi_callback)(struct pt_regs *))
 {
 	crash_ipi_function_ptr = crash_ipi_callback;
-	if (crash_ipi_callback) {
+	if (crash_ipi_callback && smp_ops) {
 		mb();
 		smp_ops->message_pass(MSG_ALL_BUT_SELF, PPC_MSG_DEBUGGER_BREAK);
 	}
@@ -221,6 +223,9 @@ int smp_call_function (void (*func) (void *info), void *info, int nonatomic,
 	/* Can deadlock when called with interrupts disabled */
 	WARN_ON(irqs_disabled());
 
+	if (unlikely(smp_ops == NULL))
+		return -1;
+
 	data.func = func;
 	data.info = info;
 	atomic_set(&data.started, 0);
@@ -358,11 +363,14 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 	smp_store_cpu_info(boot_cpuid);
 	cpu_callin_map[boot_cpuid] = 1;
 
-	max_cpus = smp_ops->probe();
+	if (smp_ops)
+		max_cpus = smp_ops->probe();
+	else
+		max_cpus = 1;
  
 	smp_space_timers(max_cpus);
 
-	for_each_cpu(cpu)
+	for_each_possible_cpu(cpu)
 		if (cpu != boot_cpuid)
 			smp_create_idle(cpu);
 }
@@ -454,13 +462,13 @@ void generic_mach_cpu_die(void)
 
 static int __devinit cpu_enable(unsigned int cpu)
 {
-	if (smp_ops->cpu_enable)
+	if (smp_ops && smp_ops->cpu_enable)
 		return smp_ops->cpu_enable(cpu);
 
 	return -ENOSYS;
 }
 
-int __devinit __cpu_up(unsigned int cpu)
+int __cpuinit __cpu_up(unsigned int cpu)
 {
 	int c;
 
@@ -468,7 +476,8 @@ int __devinit __cpu_up(unsigned int cpu)
 	if (!cpu_enable(cpu))
 		return 0;
 
-	if (smp_ops->cpu_bootable && !smp_ops->cpu_bootable(cpu))
+	if (smp_ops == NULL ||
+	    (smp_ops->cpu_bootable && !smp_ops->cpu_bootable(cpu)))
 		return -EINVAL;
 
 	/* Make sure callin-map entry is 0 (can be leftover a CPU
@@ -492,7 +501,7 @@ int __devinit __cpu_up(unsigned int cpu)
 	 * -- Cort
 	 */
 	if (system_state < SYSTEM_RUNNING)
-		for (c = 5000; c && !cpu_callin_map[cpu]; c--)
+		for (c = 50000; c && !cpu_callin_map[cpu]; c--)
 			udelay(100);
 #ifdef CONFIG_HOTPLUG_CPU
 	else
@@ -541,7 +550,7 @@ int __devinit start_secondary(void *unused)
 		smp_ops->take_timebase();
 
 	if (system_state > SYSTEM_BOOTING)
-		per_cpu(last_jiffy, cpu) = get_tb();
+		snapshot_timebase();
 
 	spin_lock(&call_lock);
 	cpu_set(cpu, cpu_online_map);
@@ -569,10 +578,13 @@ void __init smp_cpus_done(unsigned int max_cpus)
 	old_mask = current->cpus_allowed;
 	set_cpus_allowed(current, cpumask_of_cpu(boot_cpuid));
 	
-	smp_ops->setup_cpu(boot_cpuid);
+	if (smp_ops)
+		smp_ops->setup_cpu(boot_cpuid);
 
 	set_cpus_allowed(current, old_mask);
 
+	snapshot_timebases();
+
 	dump_numa_cpu_topology();
 }