1 files changed, 105 insertions, 72 deletions

diff --git a/arch/mn10300/kernel/smp.c b/arch/mn10300/kernel/smp.c
index 0dcd1c686ba..f984193718b 100644
--- a/arch/mn10300/kernel/smp.c
+++ b/arch/mn10300/kernel/smp.c
@@ -24,8 +24,8 @@
 #include <linux/sched.h>
 #include <linux/profile.h>
 #include <linux/smp.h>
+#include <linux/cpu.h>
 #include <asm/tlbflush.h>
-#include <asm/system.h>
 #include <asm/bitops.h>
 #include <asm/processor.h>
 #include <asm/bug.h>
@@ -39,7 +39,6 @@
 #include "internal.h"
 
 #ifdef CONFIG_HOTPLUG_CPU
-#include <linux/cpu.h>
 #include <asm/cacheflush.h>
 
 static unsigned long sleep_mode[NR_CPUS];
@@ -113,15 +112,17 @@ static void init_ipi(void);
  */
 static void mn10300_ipi_disable(unsigned int irq);
 static void mn10300_ipi_enable(unsigned int irq);
-static void mn10300_ipi_ack(unsigned int irq);
-static void mn10300_ipi_nop(unsigned int irq);
+static void mn10300_ipi_chip_disable(struct irq_data *d);
+static void mn10300_ipi_chip_enable(struct irq_data *d);
+static void mn10300_ipi_ack(struct irq_data *d);
+static void mn10300_ipi_nop(struct irq_data *d);
 
 static struct irq_chip mn10300_ipi_type = {
 	.name		= "cpu_ipi",
-	.disable	= mn10300_ipi_disable,
-	.enable		= mn10300_ipi_enable,
-	.ack		= mn10300_ipi_ack,
-	.eoi		= mn10300_ipi_nop
+	.irq_disable	= mn10300_ipi_chip_disable,
+	.irq_enable	= mn10300_ipi_chip_enable,
+	.irq_ack	= mn10300_ipi_ack,
+	.irq_eoi	= mn10300_ipi_nop
 };
 
 static irqreturn_t smp_reschedule_interrupt(int irq, void *dev_id);
@@ -129,10 +130,12 @@ static irqreturn_t smp_call_function_interrupt(int irq, void *dev_id);
 
 static struct irqaction reschedule_ipi = {
 	.handler	= smp_reschedule_interrupt,
+	.flags		= IRQF_NOBALANCING,
 	.name		= "smp reschedule IPI"
 };
 static struct irqaction call_function_ipi = {
 	.handler	= smp_call_function_interrupt,
+	.flags		= IRQF_NOBALANCING,
 	.name		= "smp call function IPI"
 };
 
@@ -140,7 +143,7 @@ static struct irqaction call_function_ipi = {
 static irqreturn_t smp_ipi_timer_interrupt(int irq, void *dev_id);
 static struct irqaction local_timer_ipi = {
 	.handler	= smp_ipi_timer_interrupt,
-	.flags		= IRQF_DISABLED,
+	.flags		= IRQF_NOBALANCING,
 	.name		= "smp local timer IPI"
 };
 #endif
@@ -154,15 +157,15 @@ static void init_ipi(void)
 	u16 tmp16;
 
 	/* set up the reschedule IPI */
-	set_irq_chip_and_handler(RESCHEDULE_IPI,
-				 &mn10300_ipi_type, handle_percpu_irq);
+	irq_set_chip_and_handler(RESCHEDULE_IPI, &mn10300_ipi_type,
+				 handle_percpu_irq);
 	setup_irq(RESCHEDULE_IPI, &reschedule_ipi);
 	set_intr_level(RESCHEDULE_IPI, RESCHEDULE_GxICR_LV);
 	mn10300_ipi_enable(RESCHEDULE_IPI);
 
 	/* set up the call function IPI */
-	set_irq_chip_and_handler(CALL_FUNC_SINGLE_IPI,
-				 &mn10300_ipi_type, handle_percpu_irq);
+	irq_set_chip_and_handler(CALL_FUNC_SINGLE_IPI, &mn10300_ipi_type,
+				 handle_percpu_irq);
 	setup_irq(CALL_FUNC_SINGLE_IPI, &call_function_ipi);
 	set_intr_level(CALL_FUNC_SINGLE_IPI, CALL_FUNCTION_GxICR_LV);
 	mn10300_ipi_enable(CALL_FUNC_SINGLE_IPI);
@@ -170,8 +173,8 @@ static void init_ipi(void)
 	/* set up the local timer IPI */
 #if !defined(CONFIG_GENERIC_CLOCKEVENTS) || \
     defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST)
-	set_irq_chip_and_handler(LOCAL_TIMER_IPI,
-				 &mn10300_ipi_type, handle_percpu_irq);
+	irq_set_chip_and_handler(LOCAL_TIMER_IPI, &mn10300_ipi_type,
+				 handle_percpu_irq);
 	setup_irq(LOCAL_TIMER_IPI, &local_timer_ipi);
 	set_intr_level(LOCAL_TIMER_IPI, LOCAL_TIMER_GxICR_LV);
 	mn10300_ipi_enable(LOCAL_TIMER_IPI);
@@ -179,6 +182,7 @@ static void init_ipi(void)
 
 #ifdef CONFIG_MN10300_CACHE_ENABLED
 	/* set up the cache flush IPI */
+	irq_set_chip(FLUSH_CACHE_IPI, &mn10300_ipi_type);
 	flags = arch_local_cli_save();
 	__set_intr_stub(NUM2EXCEP_IRQ_LEVEL(FLUSH_CACHE_GxICR_LV),
 			mn10300_low_ipi_handler);
@@ -188,6 +192,7 @@ static void init_ipi(void)
 #endif
 
 	/* set up the NMI call function IPI */
+	irq_set_chip(CALL_FUNCTION_NMI_IPI, &mn10300_ipi_type);
 	flags = arch_local_cli_save();
 	GxICR(CALL_FUNCTION_NMI_IPI) = GxICR_NMI | GxICR_ENABLE | GxICR_DETECT;
 	tmp16 = GxICR(CALL_FUNCTION_NMI_IPI);
@@ -198,6 +203,10 @@ static void init_ipi(void)
 	__set_intr_stub(NUM2EXCEP_IRQ_LEVEL(SMP_BOOT_GxICR_LV),
 			mn10300_low_ipi_handler);
 	arch_local_irq_restore(flags);
+
+#ifdef CONFIG_KERNEL_DEBUGGER
+	irq_set_chip(DEBUGGER_NMI_IPI, &mn10300_ipi_type);
+#endif
 }
 
 /**
@@ -236,6 +245,11 @@ static void mn10300_ipi_enable(unsigned int irq)
 	arch_local_irq_restore(flags);
 }
 
+static void mn10300_ipi_chip_enable(struct irq_data *d)
+{
+	mn10300_ipi_enable(d->irq);
+}
+
 /**
  * mn10300_ipi_disable - Disable an IPI
  * @irq: The IPI to be disabled.
@@ -254,6 +268,12 @@ static void mn10300_ipi_disable(unsigned int irq)
 	arch_local_irq_restore(flags);
 }
 
+static void mn10300_ipi_chip_disable(struct irq_data *d)
+{
+	mn10300_ipi_disable(d->irq);
+}
+
+
 /**
  * mn10300_ipi_ack - Acknowledge an IPI interrupt in the PIC
  * @irq: The IPI to be acknowledged.
@@ -261,8 +281,9 @@ static void mn10300_ipi_disable(unsigned int irq)
  * Clear the interrupt detection flag for the IPI on the appropriate interrupt
  * channel in the PIC.
  */
-static void mn10300_ipi_ack(unsigned int irq)
+static void mn10300_ipi_ack(struct irq_data *d)
 {
+	unsigned int irq = d->irq;
 	unsigned long flags;
 	u16 tmp;
 
@@ -276,7 +297,7 @@ static void mn10300_ipi_ack(unsigned int irq)
  * mn10300_ipi_nop - Dummy IPI action
  * @irq: The IPI to be acted upon.
  */
-static void mn10300_ipi_nop(unsigned int irq)
+static void mn10300_ipi_nop(struct irq_data *d)
 {
 }
 
@@ -295,7 +316,7 @@ static void send_IPI_mask(const cpumask_t *cpumask, int irq)
 	u16 tmp;
 
 	for (i = 0; i < NR_CPUS; i++) {
-		if (cpu_isset(i, *cpumask)) {
+		if (cpumask_test_cpu(i, cpumask)) {
 			/* send IPI */
 			tmp = CROSS_GxICR(irq, i);
 			CROSS_GxICR(irq, i) =
@@ -328,8 +349,8 @@ void send_IPI_allbutself(int irq)
 {
 	cpumask_t cpumask;
 
-	cpumask = cpu_online_map;
-	cpu_clear(smp_processor_id(), cpumask);
+	cpumask_copy(&cpumask, cpu_online_mask);
+	cpumask_clear_cpu(smp_processor_id(), &cpumask);
 	send_IPI_mask(&cpumask, irq);
 }
 
@@ -379,8 +400,8 @@ int smp_nmi_call_function(smp_call_func_t func, void *info, int wait)
 
 	data.func = func;
 	data.info = info;
-	data.started = cpu_online_map;
-	cpu_clear(smp_processor_id(), data.started);
+	cpumask_copy(&data.started, cpu_online_mask);
+	cpumask_clear_cpu(smp_processor_id(), &data.started);
 	data.wait = wait;
 	if (wait)
 		data.finished = data.started;
@@ -396,14 +417,14 @@ int smp_nmi_call_function(smp_call_func_t func, void *info, int wait)
 	if (CALL_FUNCTION_NMI_IPI_TIMEOUT > 0) {
 		for (cnt = 0;
 		     cnt < CALL_FUNCTION_NMI_IPI_TIMEOUT &&
-			     !cpus_empty(data.started);
+			     !cpumask_empty(&data.started);
 		     cnt++)
 			mdelay(1);
 
 		if (wait && cnt < CALL_FUNCTION_NMI_IPI_TIMEOUT) {
 			for (cnt = 0;
 			     cnt < CALL_FUNCTION_NMI_IPI_TIMEOUT &&
-				     !cpus_empty(data.finished);
+				     !cpumask_empty(&data.finished);
 			     cnt++)
 				mdelay(1);
 		}
@@ -414,10 +435,10 @@ int smp_nmi_call_function(smp_call_func_t func, void *info, int wait)
 	} else {
 		/* If timeout value is zero, wait until cpumask has been
 		 * cleared */
-		while (!cpus_empty(data.started))
+		while (!cpumask_empty(&data.started))
 			barrier();
 		if (wait)
-			while (!cpus_empty(data.finished))
+			while (!cpumask_empty(&data.finished))
 				barrier();
 	}
 
@@ -426,6 +447,22 @@ int smp_nmi_call_function(smp_call_func_t func, void *info, int wait)
 }
 
 /**
+ * smp_jump_to_debugger - Make other CPUs enter the debugger by sending an IPI
+ *
+ * Send a non-maskable request to all other CPUs in the system, instructing
+ * them to jump into the debugger.  The caller is responsible for checking that
+ * the other CPUs responded to the instruction.
+ *
+ * The caller should make sure that this CPU's debugger IPI is disabled.
+ */
+void smp_jump_to_debugger(void)
+{
+	if (num_online_cpus() > 1)
+		/* Send a message to all other CPUs */
+		send_IPI_allbutself(DEBUGGER_NMI_IPI);
+}
+
+/**
  * stop_this_cpu - Callback to stop a CPU.
  * @unused: Callback context (ignored).
  */
@@ -442,12 +479,12 @@ void stop_this_cpu(void *unused)
 #endif	/* CONFIG_GDBSTUB */
 
 	flags = arch_local_cli_save();
-	cpu_clear(smp_processor_id(), cpu_online_map);
+	set_cpu_online(smp_processor_id(), false);
 
 	while (!stopflag)
 		cpu_relax();
 
-	cpu_set(smp_processor_id(), cpu_online_map);
+	set_cpu_online(smp_processor_id(), true);
 	arch_local_irq_restore(flags);
 }
 
@@ -464,14 +501,11 @@ void smp_send_stop(void)
  * @irq: The interrupt number.
  * @dev_id: The device ID.
  *
- * We need do nothing here, since the scheduling will be effected on our way
- * back through entry.S.
- *
  * Returns IRQ_HANDLED to indicate we handled the interrupt successfully.
  */
 static irqreturn_t smp_reschedule_interrupt(int irq, void *dev_id)
 {
-	/* do nothing */
+	scheduler_ipi();
 	return IRQ_HANDLED;
 }
 
@@ -502,12 +536,13 @@ void smp_nmi_call_function_interrupt(void)
 	 * execute the function
 	 */
 	smp_mb();
-	cpu_clear(smp_processor_id(), nmi_call_data->started);
+	cpumask_clear_cpu(smp_processor_id(), &nmi_call_data->started);
 	(*func)(info);
 
 	if (wait) {
 		smp_mb();
-		cpu_clear(smp_processor_id(), nmi_call_data->finished);
+		cpumask_clear_cpu(smp_processor_id(),
+				  &nmi_call_data->finished);
 	}
 }
 
@@ -589,7 +624,7 @@ static void __init smp_cpu_init(void)
 /**
  * smp_prepare_cpu_init - Initialise CPU in startup_secondary
  *
- * Set interrupt level 0-6 setting and init ICR of gdbstub.
+ * Set interrupt level 0-6 setting and init ICR of the kernel debugger.
  */
 void smp_prepare_cpu_init(void)
 {
@@ -608,15 +643,15 @@ void smp_prepare_cpu_init(void)
 	for (loop = 0; loop < GxICR_NUM_IRQS; loop++)
 		GxICR(loop) = GxICR_LEVEL_6 | GxICR_DETECT;
 
-#ifdef CONFIG_GDBSTUB
-	/* initialise GDB-stub */
+#ifdef CONFIG_KERNEL_DEBUGGER
+	/* initialise the kernel debugger interrupt */
 	do {
 		unsigned long flags;
 		u16 tmp16;
 
 		flags = arch_local_cli_save();
-		GxICR(GDB_NMI_IPI) = GxICR_NMI | GxICR_ENABLE | GxICR_DETECT;
-		tmp16 = GxICR(GDB_NMI_IPI);
+		GxICR(DEBUGGER_NMI_IPI) = GxICR_NMI | GxICR_ENABLE | GxICR_DETECT;
+		tmp16 = GxICR(DEBUGGER_NMI_IPI);
 		arch_local_irq_restore(flags);
 	} while (0);
 #endif
@@ -630,7 +665,7 @@ int __init start_secondary(void *unused)
 {
 	smp_cpu_init();
 	smp_callin();
-	while (!cpu_isset(smp_processor_id(), smp_commenced_mask))
+	while (!cpumask_test_cpu(smp_processor_id(), &smp_commenced_mask))
 		cpu_relax();
 
 	local_flush_tlb();
@@ -640,7 +675,7 @@ int __init start_secondary(void *unused)
 #ifdef CONFIG_GENERIC_CLOCKEVENTS
 	init_clockevents();
 #endif
-	cpu_idle();
+	cpu_startup_entry(CPUHP_ONLINE);
 	return 0;
 }
 
@@ -753,13 +788,14 @@ static int __init do_boot_cpu(int phy_id)
 
 	if (send_status == 0) {
 		/* Allow AP to start initializing */
-		cpu_set(cpu_id, cpu_callout_map);
+		cpumask_set_cpu(cpu_id, &cpu_callout_map);
 
 		/* Wait for setting cpu_callin_map */
 		timeout = 0;
 		do {
 			udelay(1000);
-			callin_status = cpu_isset(cpu_id, cpu_callin_map);
+			callin_status = cpumask_test_cpu(cpu_id,
+							 &cpu_callin_map);
 		} while (callin_status == 0 && timeout++ < 5000);
 
 		if (callin_status == 0)
@@ -769,9 +805,9 @@ static int __init do_boot_cpu(int phy_id)
 	}
 
 	if (send_status == GxICR_REQUEST || callin_status == 0) {
-		cpu_clear(cpu_id, cpu_callout_map);
-		cpu_clear(cpu_id, cpu_callin_map);
-		cpu_clear(cpu_id, cpu_initialized);
+		cpumask_clear_cpu(cpu_id, &cpu_callout_map);
+		cpumask_clear_cpu(cpu_id, &cpu_callin_map);
+		cpumask_clear_cpu(cpu_id, &cpu_initialized);
 		cpucount--;
 		return 1;
 	}
@@ -806,7 +842,7 @@ static void __init smp_callin(void)
 	cpu = smp_processor_id();
 	timeout = jiffies + (2 * HZ);
 
-	if (cpu_isset(cpu, cpu_callin_map)) {
+	if (cpumask_test_cpu(cpu, &cpu_callin_map)) {
 		printk(KERN_ERR "CPU#%d already present.\n", cpu);
 		BUG();
 	}
@@ -814,7 +850,7 @@ static void __init smp_callin(void)
 
 	/* Wait for AP startup 2s total */
 	while (time_before(jiffies, timeout)) {
-		if (cpu_isset(cpu, cpu_callout_map))
+		if (cpumask_test_cpu(cpu, &cpu_callout_map))
 			break;
 		cpu_relax();
 	}
@@ -834,11 +870,11 @@ static void __init smp_callin(void)
 	smp_store_cpu_info(cpu);
 
 	/* Allow the boot processor to continue */
-	cpu_set(cpu, cpu_callin_map);
+	cpumask_set_cpu(cpu, &cpu_callin_map);
 }
 
 /**
- * smp_online - Set cpu_online_map
+ * smp_online - Set cpu_online_mask
  */
 static void __init smp_online(void)
 {
@@ -846,10 +882,11 @@ static void __init smp_online(void)
 
 	cpu = smp_processor_id();
 
-	local_irq_enable();
+	notify_cpu_starting(cpu);
 
-	cpu_set(cpu, cpu_online_map);
-	smp_wmb();
+	set_cpu_online(cpu, true);
+
+	local_irq_enable();
 }
 
 /**
@@ -865,13 +902,13 @@ void __init smp_cpus_done(unsigned int max_cpus)
 /*
  * smp_prepare_boot_cpu - Set up stuff for the boot processor.
  *
- * Set up the cpu_online_map, cpu_callout_map and cpu_callin_map of the boot
+ * Set up the cpu_online_mask, cpu_callout_map and cpu_callin_map of the boot
  * processor (CPU 0).
  */
-void __devinit smp_prepare_boot_cpu(void)
+void smp_prepare_boot_cpu(void)
 {
-	cpu_set(0, cpu_callout_map);
-	cpu_set(0, cpu_callin_map);
+	cpumask_set_cpu(0, &cpu_callout_map);
+	cpumask_set_cpu(0, &cpu_callin_map);
 	current_thread_info()->cpu = 0;
 }
 
@@ -893,27 +930,25 @@ void initialize_secondary(void)
  * __cpu_up - Set smp_commenced_mask for the nominated CPU
  * @cpu: The target CPU.
  */
-int __devinit __cpu_up(unsigned int cpu)
+int __cpu_up(unsigned int cpu, struct task_struct *tidle)
 {
 	int timeout;
 
 #ifdef CONFIG_HOTPLUG_CPU
-	if (num_online_cpus() == 1)
-		disable_hlt();
 	if (sleep_mode[cpu])
 		run_wakeup_cpu(cpu);
 #endif /* CONFIG_HOTPLUG_CPU */
 
-	cpu_set(cpu, smp_commenced_mask);
+	cpumask_set_cpu(cpu, &smp_commenced_mask);
 
 	/* Wait 5s total for a response */
 	for (timeout = 0 ; timeout < 5000 ; timeout++) {
-		if (cpu_isset(cpu, cpu_online_map))
+		if (cpu_online(cpu))
 			break;
 		udelay(1000);
 	}
 
-	BUG_ON(!cpu_isset(cpu, cpu_online_map));
+	BUG_ON(!cpu_online(cpu));
 	return 0;
 }
 
@@ -959,16 +994,13 @@ int __cpu_disable(void)
 		return -EBUSY;
 
 	migrate_irqs();
-	cpu_clear(cpu, current->active_mm->cpu_vm_mask);
+	cpumask_clear_cpu(cpu, &mm_cpumask(current->active_mm));
 	return 0;
 }
 
 void __cpu_die(unsigned int cpu)
 {
 	run_sleep_cpu(cpu);
-
-	if (num_online_cpus() == 1)
-		enable_hlt();
 }
 
 #ifdef CONFIG_MN10300_CACHE_ENABLED
@@ -1064,13 +1096,13 @@ static int hotplug_cpu_nmi_call_function(cpumask_t cpumask,
 	do {
 		mn10300_local_dcache_inv_range(start, end);
 		barrier();
-	} while (!cpus_empty(nmi_call_func_mask_data.started));
+	} while (!cpumask_empty(&nmi_call_func_mask_data.started));
 
 	if (wait) {
 		do {
 			mn10300_local_dcache_inv_range(start, end);
 			barrier();
-		} while (!cpus_empty(nmi_call_func_mask_data.finished));
+		} while (!cpumask_empty(&nmi_call_func_mask_data.finished));
 	}
 
 	spin_unlock(&smp_nmi_call_lock);
@@ -1081,9 +1113,9 @@ static void restart_wakeup_cpu(void)
 {
 	unsigned int cpu = smp_processor_id();
 
-	cpu_set(cpu, cpu_callin_map);
+	cpumask_set_cpu(cpu, &cpu_callin_map);
 	local_flush_tlb();
-	cpu_set(cpu, cpu_online_map);
+	set_cpu_online(cpu, true);
 	smp_wmb();
 }
 
@@ -1114,8 +1146,9 @@ static void sleep_cpu(void *unused)
 static void run_sleep_cpu(unsigned int cpu)
 {
 	unsigned long flags;
-	cpumask_t cpumask = cpumask_of(cpu);
+	cpumask_t cpumask;
 
+	cpumask_copy(&cpumask, &cpumask_of(cpu));
 	flags = arch_local_cli_save();
 	hotplug_cpu_nmi_call_function(cpumask, prepare_sleep_cpu, NULL, 1);
 	hotplug_cpu_nmi_call_function(cpumask, sleep_cpu, NULL, 0);