Messages in this thread | | | Date | Wed, 13 May 2015 00:23:22 +0100 | From | Russell King - ARM Linux <> | Subject | Re: [PATCH] ARM: berlin: add CPU hotplug support |
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On Tue, May 12, 2015 at 04:16:26PM +0200, Antoine Tenart wrote: > Adds CPU hotplug support for Berlin SoCs (currently BG2 and BG2Q). The > CPUs are put in WFI after disabling the coherency. > > Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com> > --- > arch/arm/mach-berlin/platsmp.c | 13 +++++++++++++ > 1 file changed, 13 insertions(+) > > diff --git a/arch/arm/mach-berlin/platsmp.c b/arch/arm/mach-berlin/platsmp.c > index 702e7982015a..d9c62057be76 100644 > --- a/arch/arm/mach-berlin/platsmp.c > +++ b/arch/arm/mach-berlin/platsmp.c > @@ -14,6 +14,7 @@ > #include <linux/of_address.h> > > #include <asm/cacheflush.h> > +#include <asm/cp15.h>
I don't see anything being added by this patch which would need this include.
> #include <asm/smp_plat.h> > #include <asm/smp_scu.h> > > @@ -92,8 +93,20 @@ unmap_scu: > iounmap(scu_base); > } > > +#ifdef CONFIG_HOTPLUG_CPU > +static void berlin_cpu_die(unsigned int cpu) > +{ > + v7_exit_coherency_flush(louis); > + while (1) > + cpu_do_idle(); > +} > +#endif > + > static struct smp_operations berlin_smp_ops __initdata = { > .smp_prepare_cpus = berlin_smp_prepare_cpus, > .smp_boot_secondary = berlin_boot_secondary, > +#ifdef CONFIG_HOTPLUG_CPU > + .cpu_die = berlin_cpu_die, > +#endif > }; > CPU_METHOD_OF_DECLARE(berlin_smp, "marvell,berlin-smp", &berlin_smp_ops); > -- > 2.4.0 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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