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-rw-r--r--kernel/cpu.c97
-rw-r--r--kernel/cpuset.c4
-rw-r--r--kernel/irq/chip.c2
-rw-r--r--kernel/irq/manage.c22
-rw-r--r--kernel/irq/migration.c14
-rw-r--r--kernel/irq/proc.c29
-rw-r--r--kernel/profile.c4
-rw-r--r--kernel/sched.c10
-rw-r--r--kernel/sched_stats.h2
-rw-r--r--kernel/smp.c143
-rw-r--r--kernel/taskstats.c2
-rw-r--r--kernel/time/clockevents.c2
-rw-r--r--kernel/time/tick-broadcast.c2
-rw-r--r--kernel/time/tick-common.c12
-rw-r--r--kernel/trace/trace.c4
15 files changed, 184 insertions, 165 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 8ea32e8d68b0..2c9f78f3a2fc 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -15,29 +15,8 @@
#include <linux/stop_machine.h>
#include <linux/mutex.h>
-/*
- * Represents all cpu's present in the system
- * In systems capable of hotplug, this map could dynamically grow
- * as new cpu's are detected in the system via any platform specific
- * method, such as ACPI for e.g.
- */
-cpumask_t cpu_present_map __read_mostly;
-EXPORT_SYMBOL(cpu_present_map);
-
-#ifndef CONFIG_SMP
-
-/*
- * Represents all cpu's that are currently online.
- */
-cpumask_t cpu_online_map __read_mostly = CPU_MASK_ALL;
-EXPORT_SYMBOL(cpu_online_map);
-
-cpumask_t cpu_possible_map __read_mostly = CPU_MASK_ALL;
-EXPORT_SYMBOL(cpu_possible_map);
-
-#else /* CONFIG_SMP */
-
-/* Serializes the updates to cpu_online_map, cpu_present_map */
+#ifdef CONFIG_SMP
+/* Serializes the updates to cpu_online_mask, cpu_present_mask */
static DEFINE_MUTEX(cpu_add_remove_lock);
static __cpuinitdata RAW_NOTIFIER_HEAD(cpu_chain);
@@ -64,8 +43,6 @@ void __init cpu_hotplug_init(void)
cpu_hotplug.refcount = 0;
}
-cpumask_t cpu_active_map;
-
#ifdef CONFIG_HOTPLUG_CPU
void get_online_cpus(void)
@@ -96,7 +73,7 @@ EXPORT_SYMBOL_GPL(put_online_cpus);
/*
* The following two API's must be used when attempting
- * to serialize the updates to cpu_online_map, cpu_present_map.
+ * to serialize the updates to cpu_online_mask, cpu_present_mask.
*/
void cpu_maps_update_begin(void)
{
@@ -502,3 +479,71 @@ EXPORT_SYMBOL_GPL(cpu_bit_bitmap);
const DECLARE_BITMAP(cpu_all_bits, NR_CPUS) = CPU_BITS_ALL;
EXPORT_SYMBOL(cpu_all_bits);
+
+#ifdef CONFIG_INIT_ALL_POSSIBLE
+static DECLARE_BITMAP(cpu_possible_bits, CONFIG_NR_CPUS) __read_mostly
+ = CPU_BITS_ALL;
+#else
+static DECLARE_BITMAP(cpu_possible_bits, CONFIG_NR_CPUS) __read_mostly;
+#endif
+const struct cpumask *const cpu_possible_mask = to_cpumask(cpu_possible_bits);
+EXPORT_SYMBOL(cpu_possible_mask);
+
+static DECLARE_BITMAP(cpu_online_bits, CONFIG_NR_CPUS) __read_mostly;
+const struct cpumask *const cpu_online_mask = to_cpumask(cpu_online_bits);
+EXPORT_SYMBOL(cpu_online_mask);
+
+static DECLARE_BITMAP(cpu_present_bits, CONFIG_NR_CPUS) __read_mostly;
+const struct cpumask *const cpu_present_mask = to_cpumask(cpu_present_bits);
+EXPORT_SYMBOL(cpu_present_mask);
+
+static DECLARE_BITMAP(cpu_active_bits, CONFIG_NR_CPUS) __read_mostly;
+const struct cpumask *const cpu_active_mask = to_cpumask(cpu_active_bits);
+EXPORT_SYMBOL(cpu_active_mask);
+
+void set_cpu_possible(unsigned int cpu, bool possible)
+{
+ if (possible)
+ cpumask_set_cpu(cpu, to_cpumask(cpu_possible_bits));
+ else
+ cpumask_clear_cpu(cpu, to_cpumask(cpu_possible_bits));
+}
+
+void set_cpu_present(unsigned int cpu, bool present)
+{
+ if (present)
+ cpumask_set_cpu(cpu, to_cpumask(cpu_present_bits));
+ else
+ cpumask_clear_cpu(cpu, to_cpumask(cpu_present_bits));
+}
+
+void set_cpu_online(unsigned int cpu, bool online)
+{
+ if (online)
+ cpumask_set_cpu(cpu, to_cpumask(cpu_online_bits));
+ else
+ cpumask_clear_cpu(cpu, to_cpumask(cpu_online_bits));
+}
+
+void set_cpu_active(unsigned int cpu, bool active)
+{
+ if (active)
+ cpumask_set_cpu(cpu, to_cpumask(cpu_active_bits));
+ else
+ cpumask_clear_cpu(cpu, to_cpumask(cpu_active_bits));
+}
+
+void init_cpu_present(const struct cpumask *src)
+{
+ cpumask_copy(to_cpumask(cpu_present_bits), src);
+}
+
+void init_cpu_possible(const struct cpumask *src)
+{
+ cpumask_copy(to_cpumask(cpu_possible_bits), src);
+}
+
+void init_cpu_online(const struct cpumask *src)
+{
+ cpumask_copy(to_cpumask(cpu_online_bits), src);
+}
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 96c0ba13b8cd..39c1a4c1c5a9 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -896,7 +896,7 @@ static int update_cpumask(struct cpuset *cs, const char *buf)
if (!*buf) {
cpus_clear(trialcs.cpus_allowed);
} else {
- retval = cpulist_parse(buf, trialcs.cpus_allowed);
+ retval = cpulist_parse(buf, &trialcs.cpus_allowed);
if (retval < 0)
return retval;
@@ -1482,7 +1482,7 @@ static int cpuset_sprintf_cpulist(char *page, struct cpuset *cs)
mask = cs->cpus_allowed;
mutex_unlock(&callback_mutex);
- return cpulist_scnprintf(page, PAGE_SIZE, mask);
+ return cpulist_scnprintf(page, PAGE_SIZE, &mask);
}
static int cpuset_sprintf_memlist(char *page, struct cpuset *cs)
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index 6eb3c7952b64..f63c706d25e1 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -46,7 +46,7 @@ void dynamic_irq_init(unsigned int irq)
desc->irq_count = 0;
desc->irqs_unhandled = 0;
#ifdef CONFIG_SMP
- cpus_setall(desc->affinity);
+ cpumask_setall(&desc->affinity);
#endif
spin_unlock_irqrestore(&desc->lock, flags);
}
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 540f6c49f3fa..61c4a9b62165 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -79,7 +79,7 @@ int irq_can_set_affinity(unsigned int irq)
* @cpumask: cpumask
*
*/
-int irq_set_affinity(unsigned int irq, cpumask_t cpumask)
+int irq_set_affinity(unsigned int irq, const struct cpumask *cpumask)
{
struct irq_desc *desc = irq_to_desc(irq);
unsigned long flags;
@@ -91,14 +91,14 @@ int irq_set_affinity(unsigned int irq, cpumask_t cpumask)
#ifdef CONFIG_GENERIC_PENDING_IRQ
if (desc->status & IRQ_MOVE_PCNTXT || desc->status & IRQ_DISABLED) {
- desc->affinity = cpumask;
+ cpumask_copy(&desc->affinity, cpumask);
desc->chip->set_affinity(irq, cpumask);
} else {
desc->status |= IRQ_MOVE_PENDING;
- desc->pending_mask = cpumask;
+ cpumask_copy(&desc->pending_mask, cpumask);
}
#else
- desc->affinity = cpumask;
+ cpumask_copy(&desc->affinity, cpumask);
desc->chip->set_affinity(irq, cpumask);
#endif
desc->status |= IRQ_AFFINITY_SET;
@@ -112,26 +112,24 @@ int irq_set_affinity(unsigned int irq, cpumask_t cpumask)
*/
int do_irq_select_affinity(unsigned int irq, struct irq_desc *desc)
{
- cpumask_t mask;
-
if (!irq_can_set_affinity(irq))
return 0;
- cpus_and(mask, cpu_online_map, irq_default_affinity);
-
/*
* Preserve an userspace affinity setup, but make sure that
* one of the targets is online.
*/
if (desc->status & (IRQ_AFFINITY_SET | IRQ_NO_BALANCING)) {
- if (cpus_intersects(desc->affinity, cpu_online_map))
- mask = desc->affinity;
+ if (cpumask_any_and(&desc->affinity, cpu_online_mask)
+ < nr_cpu_ids)
+ goto set_affinity;
else
desc->status &= ~IRQ_AFFINITY_SET;
}
- desc->affinity = mask;
- desc->chip->set_affinity(irq, mask);
+ cpumask_and(&desc->affinity, cpu_online_mask, &irq_default_affinity);
+set_affinity:
+ desc->chip->set_affinity(irq, &desc->affinity);
return 0;
}
diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c
index 9db681d95814..bd72329e630c 100644
--- a/kernel/irq/migration.c
+++ b/kernel/irq/migration.c
@@ -4,7 +4,6 @@
void move_masked_irq(int irq)
{
struct irq_desc *desc = irq_to_desc(irq);
- cpumask_t tmp;
if (likely(!(desc->status & IRQ_MOVE_PENDING)))
return;
@@ -19,7 +18,7 @@ void move_masked_irq(int irq)
desc->status &= ~IRQ_MOVE_PENDING;
- if (unlikely(cpus_empty(desc->pending_mask)))
+ if (unlikely(cpumask_empty(&desc->pending_mask)))
return;
if (!desc->chip->set_affinity)
@@ -27,8 +26,6 @@ void move_masked_irq(int irq)
assert_spin_locked(&desc->lock);
- cpus_and(tmp, desc->pending_mask, cpu_online_map);
-
/*
* If there was a valid mask to work with, please
* do the disable, re-program, enable sequence.
@@ -41,10 +38,13 @@ void move_masked_irq(int irq)
* For correct operation this depends on the caller
* masking the irqs.
*/
- if (likely(!cpus_empty(tmp))) {
- desc->chip->set_affinity(irq,tmp);
+ if (likely(cpumask_any_and(&desc->pending_mask, cpu_online_mask)
+ < nr_cpu_ids)) {
+ cpumask_and(&desc->affinity,
+ &desc->pending_mask, cpu_online_mask);
+ desc->chip->set_affinity(irq, &desc->affinity);
}
- cpus_clear(desc->pending_mask);
+ cpumask_clear(&desc->pending_mask);
}
void move_native_irq(int irq)
diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index f6b3440f05bc..d2c0e5ee53c5 100644
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -40,33 +40,42 @@ static ssize_t irq_affinity_proc_write(struct file *file,
const char __user *buffer, size_t count, loff_t *pos)
{
unsigned int irq = (int)(long)PDE(file->f_path.dentry->d_inode)->data;
- cpumask_t new_value;
+ cpumask_var_t new_value;
int err;
if (!irq_to_desc(irq)->chip->set_affinity || no_irq_affinity ||
irq_balancing_disabled(irq))
return -EIO;
+ if (!alloc_cpumask_var(&new_value, GFP_KERNEL))
+ return -ENOMEM;
+
err = cpumask_parse_user(buffer, count, new_value);
if (err)
- return err;
+ goto free_cpumask;
- if (!is_affinity_mask_valid(new_value))
- return -EINVAL;
+ if (!is_affinity_mask_valid(*new_value)) {
+ err = -EINVAL;
+ goto free_cpumask;
+ }
/*
* Do not allow disabling IRQs completely - it's a too easy
* way to make the system unusable accidentally :-) At least
* one online CPU still has to be targeted.
*/
- if (!cpus_intersects(new_value, cpu_online_map))
+ if (!cpumask_intersects(new_value, cpu_online_mask)) {
/* Special case for empty set - allow the architecture
code to set default SMP affinity. */
- return irq_select_affinity_usr(irq) ? -EINVAL : count;
-
- irq_set_affinity(irq, new_value);
+ err = irq_select_affinity_usr(irq) ? -EINVAL : count;
+ } else {
+ irq_set_affinity(irq, new_value);
+ err = count;
+ }
- return count;
+free_cpumask:
+ free_cpumask_var(new_value);
+ return err;
}
static int irq_affinity_proc_open(struct inode *inode, struct file *file)
@@ -95,7 +104,7 @@ static ssize_t default_affinity_write(struct file *file,
cpumask_t new_value;
int err;
- err = cpumask_parse_user(buffer, count, new_value);
+ err = cpumask_parse_user(buffer, count, &new_value);
if (err)
return err;
diff --git a/kernel/profile.c b/kernel/profile.c
index 60adefb59b5e..4cb7d68fed82 100644
--- a/kernel/profile.c
+++ b/kernel/profile.c
@@ -442,7 +442,7 @@ void profile_tick(int type)
static int prof_cpu_mask_read_proc(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
- int len = cpumask_scnprintf(page, count, *(cpumask_t *)data);
+ int len = cpumask_scnprintf(page, count, (cpumask_t *)data);
if (count - len < 2)
return -EINVAL;
len += sprintf(page + len, "\n");
@@ -456,7 +456,7 @@ static int prof_cpu_mask_write_proc(struct file *file,
unsigned long full_count = count, err;
cpumask_t new_value;
- err = cpumask_parse_user(buffer, count, new_value);
+ err = cpumask_parse_user(buffer, count, &new_value);
if (err)
return err;
diff --git a/kernel/sched.c b/kernel/sched.c
index fff1c4a20b65..f2095660efec 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -6644,7 +6644,7 @@ static int sched_domain_debug_one(struct sched_domain *sd, int cpu, int level,
struct sched_group *group = sd->groups;
char str[256];
- cpulist_scnprintf(str, sizeof(str), sd->span);
+ cpulist_scnprintf(str, sizeof(str), &sd->span);
cpus_clear(*groupmask);
printk(KERN_DEBUG "%*s domain %d: ", level, "", level);
@@ -6697,7 +6697,7 @@ static int sched_domain_debug_one(struct sched_domain *sd, int cpu, int level,
cpus_or(*groupmask, *groupmask, group->cpumask);
- cpulist_scnprintf(str, sizeof(str), group->cpumask);
+ cpulist_scnprintf(str, sizeof(str), &group->cpumask);
printk(KERN_CONT " %s", str);
group = group->next;
@@ -7098,7 +7098,7 @@ cpu_to_phys_group(int cpu, const cpumask_t *cpu_map, struct sched_group **sg,
{
int group;
#ifdef CONFIG_SCHED_MC
- *mask = cpu_coregroup_map(cpu);
+ *mask = *cpu_coregroup_mask(cpu);
cpus_and(*mask, *mask, *cpu_map);
group = first_cpu(*mask);
#elif defined(CONFIG_SCHED_SMT)
@@ -7471,7 +7471,7 @@ static int __build_sched_domains(const cpumask_t *cpu_map,
sd = &per_cpu(core_domains, i);
SD_INIT(sd, MC);
set_domain_attribute(sd, attr);
- sd->span = cpu_coregroup_map(i);
+ sd->span = *cpu_coregroup_mask(i);
cpus_and(sd->span, sd->span, *cpu_map);
sd->parent = p;
p->child = sd;
@@ -7514,7 +7514,7 @@ static int __build_sched_domains(const cpumask_t *cpu_map,
SCHED_CPUMASK_VAR(this_core_map, allmasks);
SCHED_CPUMASK_VAR(send_covered, allmasks);
- *this_core_map = cpu_coregroup_map(i);
+ *this_core_map = *cpu_coregroup_mask(i);
cpus_and(*this_core_map, *this_core_map, *cpu_map);
if (i != first_cpu(*this_core_map))
continue;
diff --git a/kernel/sched_stats.h b/kernel/sched_stats.h
index 3b01098164c8..b59fd9cdc1b6 100644
--- a/kernel/sched_stats.h
+++ b/kernel/sched_stats.h
@@ -42,7 +42,7 @@ static int show_schedstat(struct seq_file *seq, void *v)
for_each_domain(cpu, sd) {
enum cpu_idle_type itype;
- cpumask_scnprintf(mask_str, mask_len, sd->span);
+ cpumask_scnprintf(mask_str, mask_len, &sd->span);
seq_printf(seq, "domain%d %s", dcount++, mask_str);
for (itype = CPU_IDLE; itype < CPU_MAX_IDLE_TYPES;
itype++) {
diff --git a/kernel/smp.c b/kernel/smp.c
index 75c8dde58c55..172b18268909 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -24,8 +24,8 @@ struct call_function_data {
struct call_single_data csd;
spinlock_t lock;
unsigned int refs;
- cpumask_t cpumask;
struct rcu_head rcu_head;
+ unsigned long cpumask_bits[];
};
struct call_single_queue {
@@ -110,13 +110,13 @@ void generic_smp_call_function_interrupt(void)
list_for_each_entry_rcu(data, &call_function_queue, csd.list) {
int refs;
- if (!cpu_isset(cpu, data->cpumask))
+ if (!cpumask_test_cpu(cpu, to_cpumask(data->cpumask_bits)))
continue;
data->csd.func(data->csd.info);
spin_lock(&data->lock);
- cpu_clear(cpu, data->cpumask);
+ cpumask_clear_cpu(cpu, to_cpumask(data->cpumask_bits));
WARN_ON(data->refs == 0);
data->refs--;
refs = data->refs;
@@ -266,51 +266,19 @@ void __smp_call_function_single(int cpu, struct call_single_data *data)
generic_exec_single(cpu, data);
}
-/* Dummy function */
-static void quiesce_dummy(void *unused)
-{
-}
-
-/*
- * Ensure stack based data used in call function mask is safe to free.
- *
- * This is needed by smp_call_function_mask when using on-stack data, because
- * a single call function queue is shared by all CPUs, and any CPU may pick up
- * the data item on the queue at any time before it is deleted. So we need to
- * ensure that all CPUs have transitioned through a quiescent state after
- * this call.
- *
- * This is a very slow function, implemented by sending synchronous IPIs to
- * all possible CPUs. For this reason, we have to alloc data rather than use
- * stack based data even in the case of synchronous calls. The stack based
- * data is then just used for deadlock/oom fallback which will be very rare.
- *
- * If a faster scheme can be made, we could go back to preferring stack based
- * data -- the data allocation/free is non-zero cost.
- */
-static void smp_call_function_mask_quiesce_stack(cpumask_t mask)
-{
- struct call_single_data data;
- int cpu;
-
- data.func = quiesce_dummy;
- data.info = NULL;
-
- for_each_cpu_mask(cpu, mask) {
- data.flags = CSD_FLAG_WAIT;
- generic_exec_single(cpu, &data);
- }
-}
+/* FIXME: Shim for archs using old arch_send_call_function_ipi API. */
+#ifndef arch_send_call_function_ipi_mask
+#define arch_send_call_function_ipi_mask(maskp) \
+ arch_send_call_function_ipi(*(maskp))
+#endif
/**
- * smp_call_function_mask(): Run a function on a set of other CPUs.
- * @mask: The set of cpus to run on.
+ * smp_call_function_many(): Run a function on a set of other CPUs.
+ * @mask: The set of cpus to run on (only runs on online subset).
* @func: The function to run. This must be fast and non-blocking.
* @info: An arbitrary pointer to pass to the function.
* @wait: If true, wait (atomically) until function has completed on other CPUs.
*
- * Returns 0 on success, else a negative status code.
- *
* If @wait is true, then returns once @func has returned. Note that @wait
* will be implicitly turned on in case of allocation failures, since
* we fall back to on-stack allocation.
@@ -319,53 +287,57 @@ static void smp_call_function_mask_quiesce_stack(cpumask_t mask)
* hardware interrupt handler or from a bottom half handler. Preemption
* must be disabled when calling this function.
*/
-int smp_call_function_mask(cpumask_t mask, void (*func)(void *), void *info,
- int wait)
+void smp_call_function_many(const struct cpumask *mask,
+ void (*func)(void *), void *info,
+ bool wait)
{
- struct call_function_data d;
- struct call_function_data *data = NULL;
- cpumask_t allbutself;
+ struct call_function_data *data;
unsigned long flags;
- int cpu, num_cpus;
- int slowpath = 0;
+ int cpu, next_cpu;
/* Can deadlock when called with interrupts disabled */
WARN_ON(irqs_disabled());
- cpu = smp_processor_id();
- allbutself = cpu_online_map;
- cpu_clear(cpu, allbutself);
- cpus_and(mask, mask, allbutself);
- num_cpus = cpus_weight(mask);
-
- /*
- * If zero CPUs, return. If just a single CPU, turn this request
- * into a targetted single call instead since it's faster.
- */
- if (!num_cpus)
- return 0;
- else if (num_cpus == 1) {
- cpu = first_cpu(mask);
- return smp_call_function_single(cpu, func, info, wait);
+ /* So, what's a CPU they want? Ignoring this one. */
+ cpu = cpumask_first_and(mask, cpu_online_mask);
+ if (cpu == smp_processor_id())
+ cpu = cpumask_next_and(cpu, mask, cpu_online_mask);
+ /* No online cpus? We're done. */
+ if (cpu >= nr_cpu_ids)
+ return;
+
+ /* Do we have another CPU which isn't us? */
+ next_cpu = cpumask_next_and(cpu, mask, cpu_online_mask);
+ if (next_cpu == smp_processor_id())
+ next_cpu = cpumask_next_and(next_cpu, mask, cpu_online_mask);
+
+ /* Fastpath: do that cpu by itself. */
+ if (next_cpu >= nr_cpu_ids) {
+ smp_call_function_single(cpu, func, info, wait);
+ return;
}
- data = kmalloc(sizeof(*data), GFP_ATOMIC);
- if (data) {
- data->csd.flags = CSD_FLAG_ALLOC;
- if (wait)
- data->csd.flags |= CSD_FLAG_WAIT;
- } else {
- data = &d;
- data->csd.flags = CSD_FLAG_WAIT;
- wait = 1;
- slowpath = 1;
+ data = kmalloc(sizeof(*data) + cpumask_size(), GFP_ATOMIC);
+ if (unlikely(!data)) {
+ /* Slow path. */
+ for_each_online_cpu(cpu) {
+ if (cpu == smp_processor_id())
+ continue;
+ if (cpumask_test_cpu(cpu, mask))
+ smp_call_function_single(cpu, func, info, wait);
+ }
+ return;
}
spin_lock_init(&data->lock);
+ data->csd.flags = CSD_FLAG_ALLOC;
+ if (wait)
+ data->csd.flags |= CSD_FLAG_WAIT;
data->csd.func = func;
data->csd.info = info;
- data->refs = num_cpus;
- data->cpumask = mask;
+ cpumask_and(to_cpumask(data->cpumask_bits), mask, cpu_online_mask);
+ cpumask_clear_cpu(smp_processor_id(), to_cpumask(data->cpumask_bits));
+ data->refs = cpumask_weight(to_cpumask(data->cpumask_bits));
spin_lock_irqsave(&call_function_lock, flags);
list_add_tail_rcu(&data->csd.list, &call_function_queue);
@@ -377,18 +349,13 @@ int smp_call_function_mask(cpumask_t mask, void (*func)(void *), void *info,
smp_mb();
/* Send a message to all CPUs in the map */
- arch_send_call_function_ipi(mask);
+ arch_send_call_function_ipi_mask(to_cpumask(data->cpumask_bits));
/* optionally wait for the CPUs to complete */
- if (wait) {
+ if (wait)
csd_flag_wait(&data->csd);
- if (unlikely(slowpath))
- smp_call_function_mask_quiesce_stack(mask);
- }
-
- return 0;
}
-EXPORT_SYMBOL(smp_call_function_mask);
+EXPORT_SYMBOL(smp_call_function_many);
/**
* smp_call_function(): Run a function on all other CPUs.
@@ -396,7 +363,7 @@ EXPORT_SYMBOL(smp_call_function_mask);
* @info: An arbitrary pointer to pass to the function.
* @wait: If true, wait (atomically) until function has completed on other CPUs.
*
- * Returns 0 on success, else a negative status code.
+ * Returns 0.
*
* If @wait is true, then returns once @func has returned; otherwise
* it returns just before the target cpu calls @func. In case of allocation
@@ -407,12 +374,10 @@ EXPORT_SYMBOL(smp_call_function_mask);
*/
int smp_call_function(void (*func)(void *), void *info, int wait)
{
- int ret;
-
preempt_disable();
- ret = smp_call_function_mask(cpu_online_map, func, info, wait);
+ smp_call_function_many(cpu_online_mask, func, info, wait);
preempt_enable();
- return ret;
+ return 0;
}
EXPORT_SYMBOL(smp_call_function);
diff --git a/kernel/taskstats.c b/kernel/taskstats.c
index bd6be76303cf..6d7dc4ec4aa5 100644
--- a/kernel/taskstats.c
+++ b/kernel/taskstats.c
@@ -352,7 +352,7 @@ static int parse(struct nlattr *na, cpumask_t *mask)
if (!data)
return -ENOMEM;
nla_strlcpy(data, na, len);
- ret = cpulist_parse(data, *mask);
+ ret = cpulist_parse(data, mask);
kfree(data);
return ret;
}
diff --git a/kernel/time/clockevents.c b/kernel/time/clockevents.c
index f8d968063cea..ea2f48af83cf 100644
--- a/kernel/time/clockevents.c
+++ b/kernel/time/clockevents.c
@@ -166,6 +166,8 @@ static void clockevents_notify_released(void)
void clockevents_register_device(struct clock_event_device *dev)
{
BUG_ON(dev->mode != CLOCK_EVT_MODE_UNUSED);
+ BUG_ON(!dev->cpumask);
+
/*
* A nsec2cyc multiplicator of 0 is invalid and we'd crash
* on it, so fix it up and emit a warning:
diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c
index f98a1b7b16e9..9590af2327be 100644
--- a/kernel/time/tick-broadcast.c
+++ b/kernel/time/tick-broadcast.c
@@ -150,7 +150,7 @@ static void tick_do_broadcast(cpumask_t mask)
*/
cpu = first_cpu(mask);
td = &per_cpu(tick_cpu_device, cpu);
- td->evtdev->broadcast(mask);
+ td->evtdev->broadcast(&mask);
}
}
diff --git a/kernel/time/tick-common.c b/kernel/time/tick-common.c
index df12434b43ca..f8372be74122 100644
--- a/kernel/time/tick-common.c
+++ b/kernel/time/tick-common.c
@@ -136,7 +136,7 @@ void tick_setup_periodic(struct clock_event_device *dev, int broadcast)
*/
static void tick_setup_device(struct tick_device *td,
struct clock_event_device *newdev, int cpu,
- const cpumask_t *cpumask)
+ const struct cpumask *cpumask)
{
ktime_t next_event;
void (*handler)(struct clock_event_device *) = NULL;
@@ -171,8 +171,8 @@ static void tick_setup_device(struct tick_device *td,
* When the device is not per cpu, pin the interrupt to the
* current cpu:
*/
- if (!cpus_equal(newdev->cpumask, *cpumask))
- irq_set_affinity(newdev->irq, *cpumask);
+ if (!cpumask_equal(newdev->cpumask, cpumask))
+ irq_set_affinity(newdev->irq, cpumask);
/*
* When global broadcasting is active, check if the current
@@ -202,14 +202,14 @@ static int tick_check_new_device(struct clock_event_device *newdev)
spin_lock_irqsave(&tick_device_lock, flags);
cpu = smp_processor_id();
- if (!cpu_isset(cpu, newdev->cpumask))
+ if (!cpumask_test_cpu(cpu, newdev->cpumask))
goto out_bc;
td = &per_cpu(tick_cpu_device, cpu);
curdev = td->evtdev;
/* cpu local device ? */
- if (!cpus_equal(newdev->cpumask, cpumask_of_cpu(cpu))) {
+ if (!cpumask_equal(newdev->cpumask, cpumask_of(cpu))) {
/*
* If the cpu affinity of the device interrupt can not
@@ -222,7 +222,7 @@ static int tick_check_new_device(struct clock_event_device *newdev)
* If we have a cpu local device already, do not replace it
* by a non cpu local device
*/
- if (curdev && cpus_equal(curdev->cpumask, cpumask_of_cpu(cpu)))
+ if (curdev && cpumask_equal(curdev->cpumask, cpumask_of(cpu)))
goto out_bc;
}
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 4185d5221633..0e91f43b6baf 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -2674,7 +2674,7 @@ tracing_cpumask_read(struct file *filp, char __user *ubuf,
mutex_lock(&tracing_cpumask_update_lock);
- len = cpumask_scnprintf(mask_str, count, tracing_cpumask);
+ len = cpumask_scnprintf(mask_str, count, &tracing_cpumask);
if (count - len < 2) {
count = -EINVAL;
goto out_err;
@@ -2695,7 +2695,7 @@ tracing_cpumask_write(struct file *filp, const char __user *ubuf,
int err, cpu;
mutex_lock(&tracing_cpumask_update_lock);
- err = cpumask_parse_user(ubuf, count, tracing_cpumask_new);
+ err = cpumask_parse_user(ubuf, count, &tracing_cpumask_new);
if (err)
goto err_unlock;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 17:43:20 +0000