[PATCH v4 1/2] powerpc/crash: Remove the test for cpu_online in the IPI callback

[Nicholas Piggin]

On Fri, 15 Dec 2017 19:14:54 +1100
Balbir Singh <bsingharora at gmail.com> wrote:

> Our check was extra cautious, we've audited crash_send_ipi
> and it sends an IPI only to online CPU's. Removal of this
> check should have not functional impact on crash kdump.
> 

Reviewed-by: Nicholas Piggin <npiggin at gmail.com>

> Signed-off-by: Balbir Singh <bsingharora at gmail.com>
> ---
>  arch/powerpc/kernel/crash.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/arch/powerpc/kernel/crash.c b/arch/powerpc/kernel/crash.c
> index cbabb5adccd9..29c56ca2ddfd 100644
> --- a/arch/powerpc/kernel/crash.c
> +++ b/arch/powerpc/kernel/crash.c
> @@ -69,9 +69,6 @@ static void crash_ipi_callback(struct pt_regs *regs)
>  
>  	int cpu = smp_processor_id();
>  
> -	if (!cpu_online(cpu))
> -		return;
> -
>  	hard_irq_disable();
>  	if (!cpumask_test_cpu(cpu, &cpus_state_saved)) {
>  		crash_save_cpu(regs, cpu);