Messages in this thread | | | Date | Mon, 13 Dec 2010 15:12:15 +0000 | Subject | Re: [PATCH v3 4/5] msm: hotplug: support cpu hotplug on msm | From | Catalin Marinas <> |
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On 13 December 2010 01:20, <ykaoua@qualcomm.com> wrote: > --- /dev/null > +++ b/arch/arm/mach-msm/hotplug.c [...] > +static inline void platform_do_lowpower(unsigned int cpu) > +{ > + /* Just enter wfe for now. */ > + for (;;) { > + asm("wfe"); > + if (pen_release == cpu) { > + /* > + * OK, proper wakeup, we're done > + */ > + break; > + } > + smp_rmb();
Do you need some barrier after wfe?
-- Catalin
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