Merge branch 'core/percpu' into x86/core

Conflicts:
	kernel/irq/handle.c

14 files changed, 95 insertions, 43 deletions

diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index 719ee5c1c8d..5b257a57bc5 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -107,7 +107,7 @@ static SYSDEV_ATTR(crash_notes, 0400, show_crash_notes, NULL);
 /*
  * Print cpu online, possible, present, and system maps
  */
-static ssize_t print_cpus_map(char *buf, cpumask_t *map)
+static ssize_t print_cpus_map(char *buf, const struct cpumask *map)
 {
 	int n = cpulist_scnprintf(buf, PAGE_SIZE-2, map);
 
diff --git a/drivers/base/topology.c b/drivers/base/topology.c
index a778fb52b11..bf6b13206d0 100644
--- a/drivers/base/topology.c
+++ b/drivers/base/topology.c
@@ -31,7 +31,10 @@
 #include <linux/hardirq.h>
 #include <linux/topology.h>
 
-#define define_one_ro(_name) 		\
+#define define_one_ro_named(_name, _func)				\
+static SYSDEV_ATTR(_name, 0444, _func, NULL)
+
+#define define_one_ro(_name)				\
 static SYSDEV_ATTR(_name, 0444, show_##_name, NULL)
 
 #define define_id_show_func(name)				\
@@ -42,8 +45,8 @@ static ssize_t show_##name(struct sys_device *dev,		\
 	return sprintf(buf, "%d\n", topology_##name(cpu));	\
 }
 
-#if defined(topology_thread_siblings) || defined(topology_core_siblings)
-static ssize_t show_cpumap(int type, cpumask_t *mask, char *buf)
+#if defined(topology_thread_cpumask) || defined(topology_core_cpumask)
+static ssize_t show_cpumap(int type, const struct cpumask *mask, char *buf)
 {
 	ptrdiff_t len = PTR_ALIGN(buf + PAGE_SIZE - 1, PAGE_SIZE) - buf;
 	int n = 0;
@@ -65,7 +68,7 @@ static ssize_t show_##name(struct sys_device *dev,			\
 			   struct sysdev_attribute *attr, char *buf)	\
 {									\
 	unsigned int cpu = dev->id;					\
-	return show_cpumap(0, &(topology_##name(cpu)), buf);		\
+	return show_cpumap(0, topology_##name(cpu), buf);		\
 }
 
 #define define_siblings_show_list(name)					\
@@ -74,7 +77,7 @@ static ssize_t show_##name##_list(struct sys_device *dev,		\
 				  char *buf)				\
 {									\
 	unsigned int cpu = dev->id;					\
-	return show_cpumap(1, &(topology_##name(cpu)), buf);		\
+	return show_cpumap(1, topology_##name(cpu), buf);		\
 }
 
 #else
@@ -82,9 +85,7 @@ static ssize_t show_##name##_list(struct sys_device *dev,		\
 static ssize_t show_##name(struct sys_device *dev,			\
 			   struct sysdev_attribute *attr, char *buf)	\
 {									\
-	unsigned int cpu = dev->id;					\
-	cpumask_t mask = topology_##name(cpu);				\
-	return show_cpumap(0, &mask, buf);				\
+	return show_cpumap(0, topology_##name(dev->id), buf);		\
 }
 
 #define define_siblings_show_list(name)					\
@@ -92,9 +93,7 @@ static ssize_t show_##name##_list(struct sys_device *dev,		\
 				  struct sysdev_attribute *attr,	\
 				  char *buf)				\
 {									\
-	unsigned int cpu = dev->id;					\
-	cpumask_t mask = topology_##name(cpu);				\
-	return show_cpumap(1, &mask, buf);				\
+	return show_cpumap(1, topology_##name(dev->id), buf);		\
 }
 #endif
 
@@ -107,13 +106,13 @@ define_one_ro(physical_package_id);
 define_id_show_func(core_id);
 define_one_ro(core_id);
 
-define_siblings_show_func(thread_siblings);
-define_one_ro(thread_siblings);
-define_one_ro(thread_siblings_list);
+define_siblings_show_func(thread_cpumask);
+define_one_ro_named(thread_siblings, show_thread_cpumask);
+define_one_ro_named(thread_siblings_list, show_thread_cpumask_list);
 
-define_siblings_show_func(core_siblings);
-define_one_ro(core_siblings);
-define_one_ro(core_siblings_list);
+define_siblings_show_func(core_cpumask);
+define_one_ro_named(core_siblings, show_core_cpumask);
+define_one_ro_named(core_siblings_list, show_core_cpumask_list);
 
 static struct attribute *default_attrs[] = {
 	&attr_physical_package_id.attr,
diff --git a/drivers/firmware/dcdbas.c b/drivers/firmware/dcdbas.c
index 777fba48d2d..3009e0171e5 100644
--- a/drivers/firmware/dcdbas.c
+++ b/drivers/firmware/dcdbas.c
@@ -244,7 +244,7 @@ static ssize_t host_control_on_shutdown_store(struct device *dev,
  */
 int dcdbas_smi_request(struct smi_cmd *smi_cmd)
 {
-	cpumask_t old_mask;
+	cpumask_var_t old_mask;
 	int ret = 0;
 
 	if (smi_cmd->magic != SMI_CMD_MAGIC) {
@@ -254,8 +254,11 @@ int dcdbas_smi_request(struct smi_cmd *smi_cmd)
 	}
 
 	/* SMI requires CPU 0 */
-	old_mask = current->cpus_allowed;
-	set_cpus_allowed_ptr(current, &cpumask_of_cpu(0));
+	if (!alloc_cpumask_var(&old_mask, GFP_KERNEL))
+		return -ENOMEM;
+
+	cpumask_copy(old_mask, &current->cpus_allowed);
+	set_cpus_allowed_ptr(current, cpumask_of(0));
 	if (smp_processor_id() != 0) {
 		dev_dbg(&dcdbas_pdev->dev, "%s: failed to get CPU 0\n",
 			__func__);
@@ -275,7 +278,8 @@ int dcdbas_smi_request(struct smi_cmd *smi_cmd)
 	);
 
 out:
-	set_cpus_allowed_ptr(current, &old_mask);
+	set_cpus_allowed_ptr(current, old_mask);
+	free_cpumask_var(old_mask);
 	return ret;
 }
 
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 56073199ceb..396d935012f 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -162,7 +162,7 @@ config ENCLOSURE_SERVICES
 config SGI_XP
 	tristate "Support communication between SGI SSIs"
 	depends on NET
-	depends on (IA64_GENERIC || IA64_SGI_SN2 || IA64_SGI_UV || X86_64) && SMP
+	depends on (IA64_GENERIC || IA64_SGI_SN2 || IA64_SGI_UV || X86_UV) && SMP
 	select IA64_UNCACHED_ALLOCATOR if IA64_GENERIC || IA64_SGI_SN2
 	select GENERIC_ALLOCATOR if IA64_GENERIC || IA64_SGI_SN2
 	select SGI_GRU if (IA64_GENERIC || IA64_SGI_UV || X86_64) && SMP
@@ -189,7 +189,7 @@ config HP_ILO
 
 config SGI_GRU
 	tristate "SGI GRU driver"
-	depends on (X86_64 || IA64_SGI_UV || IA64_GENERIC) && SMP
+	depends on (X86_UV || IA64_SGI_UV || IA64_GENERIC) && SMP
 	default n
 	select MMU_NOTIFIER
 	---help---
diff --git a/drivers/misc/sgi-gru/gru.h b/drivers/misc/sgi-gru/gru.h
index f93f03a9e6e..1b5f579df15 100644
--- a/drivers/misc/sgi-gru/gru.h
+++ b/drivers/misc/sgi-gru/gru.h
@@ -19,6 +19,8 @@
 #ifndef __GRU_H__
 #define __GRU_H__
 
+#include <asm/uv/uv.h>
+
 /*
  * GRU architectural definitions
  */
diff --git a/drivers/misc/sgi-xp/xp.h b/drivers/misc/sgi-xp/xp.h
index 7b4cbd5e03e..069ad3a1c2a 100644
--- a/drivers/misc/sgi-xp/xp.h
+++ b/drivers/misc/sgi-xp/xp.h
@@ -15,6 +15,8 @@
 
 #include <linux/mutex.h>
 
+#include <asm/uv/uv.h>
+
 #ifdef CONFIG_IA64
 #include <asm/system.h>
 #include <asm/sn/arch.h>	/* defines is_shub1() and is_shub2() */
diff --git a/drivers/misc/sgi-xp/xpc_main.c b/drivers/misc/sgi-xp/xpc_main.c
index 89218f7cfaa..6576170de96 100644
--- a/drivers/misc/sgi-xp/xpc_main.c
+++ b/drivers/misc/sgi-xp/xpc_main.c
@@ -318,7 +318,7 @@ xpc_hb_checker(void *ignore)
 
 	/* this thread was marked active by xpc_hb_init() */
 
-	set_cpus_allowed_ptr(current, &cpumask_of_cpu(XPC_HB_CHECK_CPU));
+	set_cpus_allowed_ptr(current, cpumask_of(XPC_HB_CHECK_CPU));
 
 	/* set our heartbeating to other partitions into motion */
 	xpc_hb_check_timeout = jiffies + (xpc_hb_check_interval * HZ);
diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index 7673fd92eaf..101c00a7bb7 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -854,20 +854,27 @@ static void efx_fini_io(struct efx_nic *efx)
  * interrupts across them. */
 static int efx_wanted_rx_queues(void)
 {
-	cpumask_t core_mask;
+	cpumask_var_t core_mask;
 	int count;
 	int cpu;
 
-	cpus_clear(core_mask);
+	if (!alloc_cpumask_var(&core_mask, GFP_KERNEL)) {
+		printk(KERN_WARNING
+		       "efx.c: allocation failure, irq balancing hobbled\n");
+		return 1;
+	}
+
+	cpumask_clear(core_mask);
 	count = 0;
 	for_each_online_cpu(cpu) {
-		if (!cpu_isset(cpu, core_mask)) {
+		if (!cpumask_test_cpu(cpu, core_mask)) {
 			++count;
-			cpus_or(core_mask, core_mask,
-				topology_core_siblings(cpu));
+			cpumask_or(core_mask, core_mask,
+				   topology_core_cpumask(cpu));
 		}
 	}
 
+	free_cpumask_var(core_mask);
 	return count;
 }
 
diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c
index 9da5a4b8113..c3ea5fa7d05 100644
--- a/drivers/oprofile/buffer_sync.c
+++ b/drivers/oprofile/buffer_sync.c
@@ -38,7 +38,7 @@
 
 static LIST_HEAD(dying_tasks);
 static LIST_HEAD(dead_tasks);
-static cpumask_t marked_cpus = CPU_MASK_NONE;
+static cpumask_var_t marked_cpus;
 static DEFINE_SPINLOCK(task_mortuary);
 static void process_task_mortuary(void);
 
@@ -456,10 +456,10 @@ static void mark_done(int cpu)
 {
 	int i;
 
-	cpu_set(cpu, marked_cpus);
+	cpumask_set_cpu(cpu, marked_cpus);
 
 	for_each_online_cpu(i) {
-		if (!cpu_isset(i, marked_cpus))
+		if (!cpumask_test_cpu(i, marked_cpus))
 			return;
 	}
 
@@ -468,7 +468,7 @@ static void mark_done(int cpu)
 	 */
 	process_task_mortuary();
 
-	cpus_clear(marked_cpus);
+	cpumask_clear(marked_cpus);
 }
 
 
@@ -565,6 +565,20 @@ void sync_buffer(int cpu)
 	mutex_unlock(&buffer_mutex);
 }
 
+int __init buffer_sync_init(void)
+{
+	if (!alloc_cpumask_var(&marked_cpus, GFP_KERNEL))
+		return -ENOMEM;
+
+	cpumask_clear(marked_cpus);
+		return 0;
+}
+
+void __exit buffer_sync_cleanup(void)
+{
+	free_cpumask_var(marked_cpus);
+}
+
 /* The function can be used to add a buffer worth of data directly to
  * the kernel buffer. The buffer is assumed to be a circular buffer.
  * Take the entries from index start and end at index end, wrapping
diff --git a/drivers/oprofile/buffer_sync.h b/drivers/oprofile/buffer_sync.h
index 3110732c183..0ebf5db6267 100644
--- a/drivers/oprofile/buffer_sync.h
+++ b/drivers/oprofile/buffer_sync.h
@@ -19,4 +19,8 @@ void sync_stop(void);
 /* sync the given CPU's buffer */
 void sync_buffer(int cpu);
 
+/* initialize/destroy the buffer system. */
+int buffer_sync_init(void);
+void buffer_sync_cleanup(void);
+
 #endif /* OPROFILE_BUFFER_SYNC_H */
diff --git a/drivers/oprofile/oprof.c b/drivers/oprofile/oprof.c
index 3cffce90f82..ced39f60229 100644
--- a/drivers/oprofile/oprof.c
+++ b/drivers/oprofile/oprof.c
@@ -183,6 +183,10 @@ static int __init oprofile_init(void)
 {
 	int err;
 
+	err = buffer_sync_init();
+	if (err)
+		return err;
+
 	err = oprofile_arch_init(&oprofile_ops);
 
 	if (err < 0 || timer) {
@@ -191,8 +195,10 @@ static int __init oprofile_init(void)
 	}
 
 	err = oprofilefs_register();
-	if (err)
+	if (err) {
 		oprofile_arch_exit();
+		buffer_sync_cleanup();
+	}
 
 	return err;
 }
@@ -202,6 +208,7 @@ static void __exit oprofile_exit(void)
 {
 	oprofilefs_unregister();
 	oprofile_arch_exit();
+	buffer_sync_cleanup();
 }
 
 
diff --git a/drivers/pci/intr_remapping.c b/drivers/pci/intr_remapping.c
index f78371b2252..5a57753ea9f 100644
--- a/drivers/pci/intr_remapping.c
+++ b/drivers/pci/intr_remapping.c
@@ -6,6 +6,7 @@
 #include <linux/irq.h>
 #include <asm/io_apic.h>
 #include <asm/smp.h>
+#include <asm/cpu.h>
 #include <linux/intel-iommu.h>
 #include "intr_remapping.h"
 
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index eb0dfdeaa94..3141e149d59 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -26,6 +26,7 @@
 #include <linux/irq.h>
 #include <linux/module.h>
 #include <linux/string.h>
+#include <linux/bootmem.h>
 
 #include <asm/ptrace.h>
 #include <asm/irq.h>
@@ -75,7 +76,14 @@ enum {
 static int evtchn_to_irq[NR_EVENT_CHANNELS] = {
 	[0 ... NR_EVENT_CHANNELS-1] = -1
 };
-static unsigned long cpu_evtchn_mask[NR_CPUS][NR_EVENT_CHANNELS/BITS_PER_LONG];
+struct cpu_evtchn_s {
+	unsigned long bits[NR_EVENT_CHANNELS/BITS_PER_LONG];
+};
+static struct cpu_evtchn_s *cpu_evtchn_mask_p;
+static inline unsigned long *cpu_evtchn_mask(int cpu)
+{
+	return cpu_evtchn_mask_p[cpu].bits;
+}
 static u8 cpu_evtchn[NR_EVENT_CHANNELS];
 
 /* Reference counts for bindings to IRQs. */
@@ -115,7 +123,7 @@ static inline unsigned long active_evtchns(unsigned int cpu,
 					   unsigned int idx)
 {
 	return (sh->evtchn_pending[idx] &
-		cpu_evtchn_mask[cpu][idx] &
+		cpu_evtchn_mask(cpu)[idx] &
 		~sh->evtchn_mask[idx]);
 }
 
@@ -125,11 +133,11 @@ static void bind_evtchn_to_cpu(unsigned int chn, unsigned int cpu)
 
 	BUG_ON(irq == -1);
 #ifdef CONFIG_SMP
-	irq_to_desc(irq)->affinity = cpumask_of_cpu(cpu);
+	cpumask_copy(irq_to_desc(irq)->affinity, cpumask_of(cpu));
 #endif
 
-	__clear_bit(chn, cpu_evtchn_mask[cpu_evtchn[chn]]);
-	__set_bit(chn, cpu_evtchn_mask[cpu]);
+	__clear_bit(chn, cpu_evtchn_mask(cpu_evtchn[chn]));
+	__set_bit(chn, cpu_evtchn_mask(cpu));
 
 	cpu_evtchn[chn] = cpu;
 }
@@ -142,12 +150,12 @@ static void init_evtchn_cpu_bindings(void)
 
 	/* By default all event channels notify CPU#0. */
 	for_each_irq_desc(i, desc) {
-		desc->affinity = cpumask_of_cpu(0);
+		cpumask_copy(desc->affinity, cpumask_of(0));
 	}
 #endif
 
 	memset(cpu_evtchn, 0, sizeof(cpu_evtchn));
-	memset(cpu_evtchn_mask[0], ~0, sizeof(cpu_evtchn_mask[0]));
+	memset(cpu_evtchn_mask(0), ~0, sizeof(cpu_evtchn_mask(0)));
 }
 
 static inline unsigned int cpu_from_evtchn(unsigned int evtchn)
@@ -822,6 +830,10 @@ static struct irq_chip xen_dynamic_chip __read_mostly = {
 void __init xen_init_IRQ(void)
 {
 	int i;
+	size_t size = nr_cpu_ids * sizeof(struct cpu_evtchn_s);
+
+	cpu_evtchn_mask_p = alloc_bootmem(size);
+	BUG_ON(cpu_evtchn_mask_p == NULL);
 
 	init_evtchn_cpu_bindings();
 
diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c
index 9b91617b958..e7e83b65c18 100644
--- a/drivers/xen/manage.c
+++ b/drivers/xen/manage.c
@@ -100,7 +100,7 @@ static void do_suspend(void)
 	/* XXX use normal device tree? */
 	xenbus_suspend();
 
-	err = stop_machine(xen_suspend, &cancelled, &cpumask_of_cpu(0));
+	err = stop_machine(xen_suspend, &cancelled, cpumask_of(0));
 	if (err) {
 		printk(KERN_ERR "failed to start xen_suspend: %d\n", err);
 		goto out;