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-rw-r--r--arch/powerpc/Kconfig2
-rw-r--r--arch/powerpc/include/asm/topology.h6
-rw-r--r--arch/powerpc/include/uapi/asm/ioctls.h1
-rw-r--r--arch/powerpc/kernel/rtasd.c2
-rw-r--r--arch/powerpc/kernel/smp.c2
-rw-r--r--arch/powerpc/kvm/book3s_hv.c14
-rw-r--r--arch/powerpc/mm/numa.c22
-rw-r--r--arch/powerpc/platforms/powernv/subcore.c7
-rw-r--r--arch/powerpc/platforms/ps3/system-bus.c10
-rw-r--r--arch/powerpc/platforms/pseries/dlpar.c2
-rw-r--r--arch/powerpc/platforms/pseries/ibmebus.c16
-rw-r--r--arch/powerpc/platforms/pseries/mobility.c7
-rw-r--r--arch/powerpc/platforms/pseries/vio.c72
13 files changed, 104 insertions, 59 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index bf4391d18923..6189238e69f8 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -184,7 +184,7 @@ config PPC
select HAVE_FUNCTION_GRAPH_TRACER
select HAVE_FUNCTION_TRACER
select HAVE_GCC_PLUGINS
- select HAVE_GENERIC_RCU_GUP
+ select HAVE_GENERIC_GUP
select HAVE_HW_BREAKPOINT if PERF_EVENTS && (PPC_BOOK3S || PPC_8xx)
select HAVE_IDE
select HAVE_IOREMAP_PROT
diff --git a/arch/powerpc/include/asm/topology.h b/arch/powerpc/include/asm/topology.h
index 329771559cbb..dc4e15937ccf 100644
--- a/arch/powerpc/include/asm/topology.h
+++ b/arch/powerpc/include/asm/topology.h
@@ -43,6 +43,7 @@ extern void __init dump_numa_cpu_topology(void);
extern int sysfs_add_device_to_node(struct device *dev, int nid);
extern void sysfs_remove_device_from_node(struct device *dev, int nid);
+extern int numa_update_cpu_topology(bool cpus_locked);
static inline int early_cpu_to_node(int cpu)
{
@@ -71,6 +72,11 @@ static inline void sysfs_remove_device_from_node(struct device *dev,
int nid)
{
}
+
+static inline int numa_update_cpu_topology(bool cpus_locked)
+{
+ return 0;
+}
#endif /* CONFIG_NUMA */
#if defined(CONFIG_NUMA) && defined(CONFIG_PPC_SPLPAR)
diff --git a/arch/powerpc/include/uapi/asm/ioctls.h b/arch/powerpc/include/uapi/asm/ioctls.h
index 49a25796a61a..bfd609a3e928 100644
--- a/arch/powerpc/include/uapi/asm/ioctls.h
+++ b/arch/powerpc/include/uapi/asm/ioctls.h
@@ -100,6 +100,7 @@
#define TIOCGPKT _IOR('T', 0x38, int) /* Get packet mode state */
#define TIOCGPTLCK _IOR('T', 0x39, int) /* Get Pty lock state */
#define TIOCGEXCL _IOR('T', 0x40, int) /* Get exclusive mode state */
+#define TIOCGPTPEER _IOR('T', 0x41, int) /* Safely open the slave */
#define TIOCSERCONFIG 0x5453
#define TIOCSERGWILD 0x5454
diff --git a/arch/powerpc/kernel/rtasd.c b/arch/powerpc/kernel/rtasd.c
index 3650732639ed..0f0b1b2f3b60 100644
--- a/arch/powerpc/kernel/rtasd.c
+++ b/arch/powerpc/kernel/rtasd.c
@@ -283,7 +283,7 @@ static void prrn_work_fn(struct work_struct *work)
* the RTAS event.
*/
pseries_devicetree_update(-prrn_update_scope);
- arch_update_cpu_topology();
+ numa_update_cpu_topology(false);
}
static DECLARE_WORK(prrn_work, prrn_work_fn);
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index df2a41647d8e..1069f74fca47 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -97,7 +97,7 @@ int smp_generic_cpu_bootable(unsigned int nr)
/* Special case - we inhibit secondary thread startup
* during boot if the user requests it.
*/
- if (system_state == SYSTEM_BOOTING && cpu_has_feature(CPU_FTR_SMT)) {
+ if (system_state < SYSTEM_RUNNING && cpu_has_feature(CPU_FTR_SMT)) {
if (!smt_enabled_at_boot && cpu_thread_in_core(nr) != 0)
return 0;
if (smt_enabled_at_boot
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 8d1a365b8edc..773b35d16a0b 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -3368,7 +3368,7 @@ void kvmppc_alloc_host_rm_ops(void)
return;
}
- get_online_cpus();
+ cpus_read_lock();
for (cpu = 0; cpu < nr_cpu_ids; cpu += threads_per_core) {
if (!cpu_online(cpu))
@@ -3390,17 +3390,17 @@ void kvmppc_alloc_host_rm_ops(void)
l_ops = (unsigned long) ops;
if (cmpxchg64((unsigned long *)&kvmppc_host_rm_ops_hv, 0, l_ops)) {
- put_online_cpus();
+ cpus_read_unlock();
kfree(ops->rm_core);
kfree(ops);
return;
}
- cpuhp_setup_state_nocalls(CPUHP_KVM_PPC_BOOK3S_PREPARE,
- "ppc/kvm_book3s:prepare",
- kvmppc_set_host_core,
- kvmppc_clear_host_core);
- put_online_cpus();
+ cpuhp_setup_state_nocalls_cpuslocked(CPUHP_KVM_PPC_BOOK3S_PREPARE,
+ "ppc/kvm_book3s:prepare",
+ kvmppc_set_host_core,
+ kvmppc_clear_host_core);
+ cpus_read_unlock();
}
void kvmppc_free_host_rm_ops(void)
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 371792e4418f..b95c584ce19d 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -1311,8 +1311,10 @@ static int update_lookup_table(void *data)
/*
* Update the node maps and sysfs entries for each cpu whose home node
* has changed. Returns 1 when the topology has changed, and 0 otherwise.
+ *
+ * cpus_locked says whether we already hold cpu_hotplug_lock.
*/
-int arch_update_cpu_topology(void)
+int numa_update_cpu_topology(bool cpus_locked)
{
unsigned int cpu, sibling, changed = 0;
struct topology_update_data *updates, *ud;
@@ -1400,15 +1402,23 @@ int arch_update_cpu_topology(void)
if (!cpumask_weight(&updated_cpus))
goto out;
- stop_machine(update_cpu_topology, &updates[0], &updated_cpus);
+ if (cpus_locked)
+ stop_machine_cpuslocked(update_cpu_topology, &updates[0],
+ &updated_cpus);
+ else
+ stop_machine(update_cpu_topology, &updates[0], &updated_cpus);
/*
* Update the numa-cpu lookup table with the new mappings, even for
* offline CPUs. It is best to perform this update from the stop-
* machine context.
*/
- stop_machine(update_lookup_table, &updates[0],
+ if (cpus_locked)
+ stop_machine_cpuslocked(update_lookup_table, &updates[0],
cpumask_of(raw_smp_processor_id()));
+ else
+ stop_machine(update_lookup_table, &updates[0],
+ cpumask_of(raw_smp_processor_id()));
for (ud = &updates[0]; ud; ud = ud->next) {
unregister_cpu_under_node(ud->cpu, ud->old_nid);
@@ -1426,6 +1436,12 @@ out:
return changed;
}
+int arch_update_cpu_topology(void)
+{
+ lockdep_assert_cpus_held();
+ return numa_update_cpu_topology(true);
+}
+
static void topology_work_fn(struct work_struct *work)
{
rebuild_sched_domains();
diff --git a/arch/powerpc/platforms/powernv/subcore.c b/arch/powerpc/platforms/powernv/subcore.c
index 8c6119280c13..309876d699e9 100644
--- a/arch/powerpc/platforms/powernv/subcore.c
+++ b/arch/powerpc/platforms/powernv/subcore.c
@@ -348,7 +348,7 @@ static int set_subcores_per_core(int new_mode)
state->master = 0;
}
- get_online_cpus();
+ cpus_read_lock();
/* This cpu will update the globals before exiting stop machine */
this_cpu_ptr(&split_state)->master = 1;
@@ -356,9 +356,10 @@ static int set_subcores_per_core(int new_mode)
/* Ensure state is consistent before we call the other cpus */
mb();
- stop_machine(cpu_update_split_mode, &new_mode, cpu_online_mask);
+ stop_machine_cpuslocked(cpu_update_split_mode, &new_mode,
+ cpu_online_mask);
- put_online_cpus();
+ cpus_read_unlock();
return 0;
}
diff --git a/arch/powerpc/platforms/ps3/system-bus.c b/arch/powerpc/platforms/ps3/system-bus.c
index 2d2e5f80a3d3..5cc35d6b94b6 100644
--- a/arch/powerpc/platforms/ps3/system-bus.c
+++ b/arch/powerpc/platforms/ps3/system-bus.c
@@ -471,11 +471,13 @@ static ssize_t modalias_show(struct device *_dev, struct device_attribute *a,
return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
}
+static DEVICE_ATTR_RO(modalias);
-static struct device_attribute ps3_system_bus_dev_attrs[] = {
- __ATTR_RO(modalias),
- __ATTR_NULL,
+static struct attribute *ps3_system_bus_dev_attrs[] = {
+ &dev_attr_modalias.attr,
+ NULL,
};
+ATTRIBUTE_GROUPS(ps3_system_bus_dev);
struct bus_type ps3_system_bus_type = {
.name = "ps3_system_bus",
@@ -484,7 +486,7 @@ struct bus_type ps3_system_bus_type = {
.probe = ps3_system_bus_probe,
.remove = ps3_system_bus_remove,
.shutdown = ps3_system_bus_shutdown,
- .dev_attrs = ps3_system_bus_dev_attrs,
+ .dev_groups = ps3_system_bus_dev_groups,
};
static int __init ps3_system_bus_init(void)
diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c
index bda18d8e1674..39187696ee74 100644
--- a/arch/powerpc/platforms/pseries/dlpar.c
+++ b/arch/powerpc/platforms/pseries/dlpar.c
@@ -588,7 +588,7 @@ static ssize_t dlpar_show(struct class *class, struct class_attribute *attr,
return sprintf(buf, "%s\n", "memory,cpu");
}
-static CLASS_ATTR(dlpar, S_IWUSR | S_IRUSR, dlpar_show, dlpar_store);
+static CLASS_ATTR_RW(dlpar);
static int __init pseries_dlpar_init(void)
{
diff --git a/arch/powerpc/platforms/pseries/ibmebus.c b/arch/powerpc/platforms/pseries/ibmebus.c
index b363e439ddb9..52146b1356d2 100644
--- a/arch/powerpc/platforms/pseries/ibmebus.c
+++ b/arch/powerpc/platforms/pseries/ibmebus.c
@@ -397,6 +397,7 @@ static ssize_t devspec_show(struct device *dev,
ofdev = to_platform_device(dev);
return sprintf(buf, "%s\n", ofdev->dev.of_node->full_name);
}
+static DEVICE_ATTR_RO(devspec);
static ssize_t name_show(struct device *dev,
struct device_attribute *attr, char *buf)
@@ -406,19 +407,22 @@ static ssize_t name_show(struct device *dev,
ofdev = to_platform_device(dev);
return sprintf(buf, "%s\n", ofdev->dev.of_node->name);
}
+static DEVICE_ATTR_RO(name);
static ssize_t modalias_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return of_device_modalias(dev, buf, PAGE_SIZE);
}
+static DEVICE_ATTR_RO(modalias);
-static struct device_attribute ibmebus_bus_device_attrs[] = {
- __ATTR_RO(devspec),
- __ATTR_RO(name),
- __ATTR_RO(modalias),
- __ATTR_NULL
+static struct attribute *ibmebus_bus_device_attrs[] = {
+ &dev_attr_devspec.attr,
+ &dev_attr_name.attr,
+ &dev_attr_modalias.attr,
+ NULL,
};
+ATTRIBUTE_GROUPS(ibmebus_bus_device);
struct bus_type ibmebus_bus_type = {
.name = "ibmebus",
@@ -428,7 +432,7 @@ struct bus_type ibmebus_bus_type = {
.probe = ibmebus_bus_device_probe,
.remove = ibmebus_bus_device_remove,
.shutdown = ibmebus_bus_device_shutdown,
- .dev_attrs = ibmebus_bus_device_attrs,
+ .dev_groups = ibmebus_bus_device_groups,
};
EXPORT_SYMBOL(ibmebus_bus_type);
diff --git a/arch/powerpc/platforms/pseries/mobility.c b/arch/powerpc/platforms/pseries/mobility.c
index 5a0c7ba429ce..2da4851eff99 100644
--- a/arch/powerpc/platforms/pseries/mobility.c
+++ b/arch/powerpc/platforms/pseries/mobility.c
@@ -349,8 +349,9 @@ void post_mobility_fixup(void)
return;
}
-static ssize_t migrate_store(struct class *class, struct class_attribute *attr,
- const char *buf, size_t count)
+static ssize_t migration_store(struct class *class,
+ struct class_attribute *attr, const char *buf,
+ size_t count)
{
u64 streamid;
int rc;
@@ -380,7 +381,7 @@ static ssize_t migrate_store(struct class *class, struct class_attribute *attr,
*/
#define MIGRATION_API_VERSION 1
-static CLASS_ATTR(migration, S_IWUSR, NULL, migrate_store);
+static CLASS_ATTR_WO(migration);
static CLASS_ATTR_STRING(api_version, S_IRUGO, __stringify(MIGRATION_API_VERSION));
static int __init mobility_sysfs_init(void)
diff --git a/arch/powerpc/platforms/pseries/vio.c b/arch/powerpc/platforms/pseries/vio.c
index 28b09fd797ec..117beb9e8786 100644
--- a/arch/powerpc/platforms/pseries/vio.c
+++ b/arch/powerpc/platforms/pseries/vio.c
@@ -948,21 +948,21 @@ static void vio_cmo_bus_init(void)
/* sysfs device functions and data structures for CMO */
#define viodev_cmo_rd_attr(name) \
-static ssize_t viodev_cmo_##name##_show(struct device *dev, \
+static ssize_t cmo_##name##_show(struct device *dev, \
struct device_attribute *attr, \
char *buf) \
{ \
return sprintf(buf, "%lu\n", to_vio_dev(dev)->cmo.name); \
}
-static ssize_t viodev_cmo_allocs_failed_show(struct device *dev,
+static ssize_t cmo_allocs_failed_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct vio_dev *viodev = to_vio_dev(dev);
return sprintf(buf, "%d\n", atomic_read(&viodev->cmo.allocs_failed));
}
-static ssize_t viodev_cmo_allocs_failed_reset(struct device *dev,
+static ssize_t cmo_allocs_failed_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct vio_dev *viodev = to_vio_dev(dev);
@@ -970,7 +970,7 @@ static ssize_t viodev_cmo_allocs_failed_reset(struct device *dev,
return count;
}
-static ssize_t viodev_cmo_desired_set(struct device *dev,
+static ssize_t cmo_desired_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct vio_dev *viodev = to_vio_dev(dev);
@@ -993,27 +993,37 @@ static ssize_t name_show(struct device *, struct device_attribute *, char *);
static ssize_t devspec_show(struct device *, struct device_attribute *, char *);
static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
char *buf);
-static struct device_attribute vio_cmo_dev_attrs[] = {
- __ATTR_RO(name),
- __ATTR_RO(devspec),
- __ATTR_RO(modalias),
- __ATTR(cmo_desired, S_IWUSR|S_IRUSR|S_IWGRP|S_IRGRP|S_IROTH,
- viodev_cmo_desired_show, viodev_cmo_desired_set),
- __ATTR(cmo_entitled, S_IRUGO, viodev_cmo_entitled_show, NULL),
- __ATTR(cmo_allocated, S_IRUGO, viodev_cmo_allocated_show, NULL),
- __ATTR(cmo_allocs_failed, S_IWUSR|S_IRUSR|S_IWGRP|S_IRGRP|S_IROTH,
- viodev_cmo_allocs_failed_show, viodev_cmo_allocs_failed_reset),
- __ATTR_NULL
+
+static struct device_attribute dev_attr_name;
+static struct device_attribute dev_attr_devspec;
+static struct device_attribute dev_attr_modalias;
+
+static DEVICE_ATTR_RO(cmo_entitled);
+static DEVICE_ATTR_RO(cmo_allocated);
+static DEVICE_ATTR_RW(cmo_desired);
+static DEVICE_ATTR_RW(cmo_allocs_failed);
+
+static struct attribute *vio_cmo_dev_attrs[] = {
+ &dev_attr_name.attr,
+ &dev_attr_devspec.attr,
+ &dev_attr_modalias.attr,
+ &dev_attr_cmo_entitled.attr,
+ &dev_attr_cmo_allocated.attr,
+ &dev_attr_cmo_desired.attr,
+ &dev_attr_cmo_allocs_failed.attr,
+ NULL,
};
+ATTRIBUTE_GROUPS(vio_cmo_dev);
/* sysfs bus functions and data structures for CMO */
#define viobus_cmo_rd_attr(name) \
-static ssize_t cmo_##name##_show(struct bus_type *bt, char *buf) \
+static ssize_t cmo_bus_##name##_show(struct bus_type *bt, char *buf) \
{ \
return sprintf(buf, "%lu\n", vio_cmo.name); \
} \
-static BUS_ATTR_RO(cmo_##name)
+static struct bus_attribute bus_attr_cmo_bus_##name = \
+ __ATTR(cmo_##name, S_IRUGO, cmo_bus_##name##_show, NULL)
#define viobus_cmo_pool_rd_attr(name, var) \
static ssize_t \
@@ -1051,11 +1061,11 @@ static ssize_t cmo_high_store(struct bus_type *bt, const char *buf,
static BUS_ATTR_RW(cmo_high);
static struct attribute *vio_bus_attrs[] = {
- &bus_attr_cmo_entitled.attr,
- &bus_attr_cmo_spare.attr,
- &bus_attr_cmo_min.attr,
- &bus_attr_cmo_desired.attr,
- &bus_attr_cmo_curr.attr,
+ &bus_attr_cmo_bus_entitled.attr,
+ &bus_attr_cmo_bus_spare.attr,
+ &bus_attr_cmo_bus_min.attr,
+ &bus_attr_cmo_bus_desired.attr,
+ &bus_attr_cmo_bus_curr.attr,
&bus_attr_cmo_high.attr,
&bus_attr_cmo_reserve_size.attr,
&bus_attr_cmo_excess_size.attr,
@@ -1066,7 +1076,7 @@ ATTRIBUTE_GROUPS(vio_bus);
static void vio_cmo_sysfs_init(void)
{
- vio_bus_type.dev_attrs = vio_cmo_dev_attrs;
+ vio_bus_type.dev_groups = vio_cmo_dev_groups;
vio_bus_type.bus_groups = vio_bus_groups;
}
#else /* CONFIG_PPC_SMLPAR */
@@ -1537,6 +1547,7 @@ static ssize_t name_show(struct device *dev,
{
return sprintf(buf, "%s\n", to_vio_dev(dev)->name);
}
+static DEVICE_ATTR_RO(name);
static ssize_t devspec_show(struct device *dev,
struct device_attribute *attr, char *buf)
@@ -1545,6 +1556,7 @@ static ssize_t devspec_show(struct device *dev,
return sprintf(buf, "%s\n", of_node_full_name(of_node));
}
+static DEVICE_ATTR_RO(devspec);
static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
char *buf)
@@ -1566,13 +1578,15 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
return sprintf(buf, "vio:T%sS%s\n", vio_dev->type, cp);
}
+static DEVICE_ATTR_RO(modalias);
-static struct device_attribute vio_dev_attrs[] = {
- __ATTR_RO(name),
- __ATTR_RO(devspec),
- __ATTR_RO(modalias),
- __ATTR_NULL
+static struct attribute *vio_dev_attrs[] = {
+ &dev_attr_name.attr,
+ &dev_attr_devspec.attr,
+ &dev_attr_modalias.attr,
+ NULL,
};
+ATTRIBUTE_GROUPS(vio_dev);
void vio_unregister_device(struct vio_dev *viodev)
{
@@ -1608,7 +1622,7 @@ static int vio_hotplug(struct device *dev, struct kobj_uevent_env *env)
struct bus_type vio_bus_type = {
.name = "vio",
- .dev_attrs = vio_dev_attrs,
+ .dev_groups = vio_dev_groups,
.uevent = vio_hotplug,
.match = vio_bus_match,
.probe = vio_bus_probe,
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