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cpu/hotplug: Move bringup of secondary CPUs out of smp_init()

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This is the last direct user of cpu_up() before it can become an internal
implementation detail of the cpu subsystem.

Signed-off-by: Qais Yousef <qais.yousef@arm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200323135110.30522-17-qais.yousef@arm.com
This commit is contained in:
Qais Yousef
2020-03-23 13:51:09 +00:00
committed by Thomas Gleixner
parent 457bc8ed3e
commit b99a26593b
3 changed files with 14 additions and 8 deletions
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12
kernel/cpu.c
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@@ -1298,6 +1298,18 @@ int bringup_hibernate_cpu(unsigned int sleep_cpu)
return 0;
}
void bringup_nonboot_cpus(unsigned int setup_max_cpus)
{
unsigned int cpu;
for_each_present_cpu(cpu) {
if (num_online_cpus() >= setup_max_cpus)
break;
if (!cpu_online(cpu))
cpu_up(cpu);
}
}
#ifdef CONFIG_PM_SLEEP_SMP
static cpumask_var_t frozen_cpus;