On 31-07-19, 13:35, Mark Rutland wrote:
> On Fri, Jul 12, 2019 at 10:58:03AM +0530, Viresh Kumar wrote:
> > From: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
> >
> > commit fce6361fe9b0caeba0c05b7d72ceda406f8780df upstream.
> >
> > This patch moves cpu_die_early to smp.c, where it fits better.
> > No functional changes, except for adding the necessary checks
> > for CONFIG_HOTPLUG_CPU.
> >
> > Cc: Mark Rutland <mark.rutland@xxxxxxx>
> > Acked-by: Will Deacon <will.deacon@xxxxxxx>
> > Signed-off-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
> > Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx>
> > [ Viresh: Resolved rebase conflict ]
> > Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
>
> > +void cpu_die_early(void)
>
> > + asm(
> > + "1: wfe\n"
> > + " wfi\n"
> > + " b 1b");
> > +}
>
> Rather than open-coding this loop differently from upstream and the
> v4.9.y backport, please backport commit:
>
> c4bc34d20273db69 ("arm64: Add a helper for parking CPUs in a loop")
>
> ... as a prerequisite of this patch.
Done, thanks.
--
viresh
