Commit 4d37cc2d authored Mar 23, 2020 by Qais Yousef Committed by Thomas Gleixner Mar 25, 2020

powerpc: Replace cpu_up/down() with add/remove_cpu()



The core device API performs extra housekeeping bits that are missing
from directly calling cpu_up/down.

See commit a6717c01 ("powerpc/rtas: use device model APIs and
serialization during LPM") for an example description of what might go
wrong.

This also prepares to make cpu_up/down() a private interface of the CPU
subsystem.

Signed-off-by: Qais Yousef <qais.yousef@arm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lkml.kernel.org/r/20200323135110.30522-11-qais.yousef@arm.com

parent af7aa046

arch/powerpc/kexec/core_64.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -212,7 +212,7 @@ static void wake_offline_cpus(void)
		if (!cpu_online(cpu)) {
		printk(KERN_INFO "kexec: Waking offline cpu %d.\n",
		cpu);
		WARN_ON(cpu_up(cpu));
		WARN_ON(add_cpu(cpu));
		}
		}
		}

Admin message