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authorQais Yousef <qais.yousef@arm.com>2020-03-23 14:51:09 +0100
committerThomas Gleixner <tglx@linutronix.de>2020-03-25 12:59:37 +0100
commitb99a26593b5190fac6b5c1f81a7f8cc128a25c98 (patch)
treea55fd32a562cd6b03405f9bd1b954d0fae284bfd /kernel/cpu.c
parenttorture: Replace cpu_up/down() with add/remove_cpu() (diff)
downloadlinux-b99a26593b5190fac6b5c1f81a7f8cc128a25c98.tar.xz
linux-b99a26593b5190fac6b5c1f81a7f8cc128a25c98.zip
cpu/hotplug: Move bringup of secondary CPUs out of smp_init()
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
Diffstat (limited to 'kernel/cpu.c')
-rw-r--r--kernel/cpu.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c
index f803678684e9..4783d811ccf8 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -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;