The functions get_online_cpus() and put_online_cpus() have been
deprecated during the CPU hotplug rework. They map directly to
cpus_read_lock() and cpus_read_unlock().
Replace deprecated CPU-hotplug functions with the official version.
The behavior remains unchanged.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: https://lore.kernel.org/r/20210803141621.780504-5-bigeasy@linutronix.de
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
unsigned int cpu_count, cpu, i;
void **cpu_vec;
- get_online_cpus();
+ cpus_read_lock();
cpu_count = num_online_cpus();
cpu_vec = kmalloc_array(num_possible_cpus(), sizeof(*cpu_vec),
GFP_KERNEL);
if (!cpu_vec)
- goto fail_put_online_cpus;
+ goto fail_unlock_cpus;
/* Note: Diag 0c needs 8 byte alignment and real storage */
diag0c_data = kzalloc(struct_size(diag0c_data, entry, cpu_count),
GFP_KERNEL | GFP_DMA);
on_each_cpu(diag0c_fn, cpu_vec, 1);
*count = cpu_count;
kfree(cpu_vec);
- put_online_cpus();
+ cpus_read_unlock();
return diag0c_data;
fail_kfree_cpu_vec:
kfree(cpu_vec);
-fail_put_online_cpus:
- put_online_cpus();
+fail_unlock_cpus:
+ cpus_read_unlock();
return ERR_PTR(-ENOMEM);
}
unsigned long n = (unsigned long) v - 1;
int cpu, prec, tmp;
- get_online_cpus();
+ cpus_read_lock();
if (n == 0) {
seq_puts(m, " ");
}
seq_printf(m, " %s\n", diag_map[n-1].name);
}
- put_online_cpus();
+ cpus_read_unlock();
return 0;
}
int index = *(loff_t *) v;
int cpu, irq;
- get_online_cpus();
+ cpus_read_lock();
if (index == 0) {
seq_puts(p, " ");
for_each_online_cpu(cpu)
seq_putc(p, '\n');
}
out:
- put_online_cpus();
+ cpus_read_unlock();
return 0;
}
{
int ret;
- get_online_cpus();
+ cpus_read_lock();
mutex_lock(&cfset_ctrset_mutex);
switch (cmd) {
case S390_HWCTR_START:
break;
}
mutex_unlock(&cfset_ctrset_mutex);
- put_online_cpus();
+ cpus_read_unlock();
return ret;
}
static void *c_start(struct seq_file *m, loff_t *pos)
{
- get_online_cpus();
+ cpus_read_lock();
return c_update(pos);
}
static void c_stop(struct seq_file *m, void *v)
{
- put_online_cpus();
+ cpus_read_unlock();
}
const struct seq_operations cpuinfo_op = {
u16 core_id;
int nr, i;
- get_online_cpus();
+ cpus_read_lock();
mutex_lock(&smp_cpu_state_mutex);
nr = 0;
cpumask_xor(&avail, cpu_possible_mask, cpu_present_mask);
nr += smp_add_core(&info->core[i], &avail, configured, early);
}
mutex_unlock(&smp_cpu_state_mutex);
- put_online_cpus();
+ cpus_read_unlock();
return nr;
}
return -EINVAL;
if (val != 0 && val != 1)
return -EINVAL;
- get_online_cpus();
+ cpus_read_lock();
mutex_lock(&smp_cpu_state_mutex);
rc = -EBUSY;
/* disallow configuration changes of online cpus and cpu 0 */
}
out:
mutex_unlock(&smp_cpu_state_mutex);
- put_online_cpus();
+ cpus_read_unlock();
return rc ? rc : count;
}
static DEVICE_ATTR(configure, 0644, cpu_configure_show, cpu_configure_store);
if (val != 0 && val != 1)
return -EINVAL;
rc = 0;
- get_online_cpus();
+ cpus_read_lock();
mutex_lock(&smp_cpu_state_mutex);
if (cpu_management == val)
goto out;
topology_expect_change();
out:
mutex_unlock(&smp_cpu_state_mutex);
- put_online_cpus();
+ cpus_read_unlock();
return rc ? rc : count;
}
static DEVICE_ATTR_RW(dispatching);
void *bounce = (void *) addr;
unsigned long size;
- get_online_cpus();
+ cpus_read_lock();
preempt_disable();
if (is_swapped(addr)) {
size = PAGE_SIZE - (addr & ~PAGE_MASK);
memcpy_absolute(bounce, (void *) addr, size);
}
preempt_enable();
- put_online_cpus();
+ cpus_read_unlock();
return bounce;
}