On Fri, Feb 20, 2015 at 11:13:33AM -0600, Paul Clarke wrote:
>
> implement arch_irq_work_has_interrupt() for powerpc
>
> (resending because I messed up the e-mail addresses)
>
> Commit 9b01f5bf3 introduced a dependency on "IRQ work self-IPIs" for
> full dynamic ticks to be enabled, by expecting architectures to
> implement a suitable arch_irq_work_has_interrupt() routine.
>
> Several arches have implemented this routine, including x86
> (3010279f) and arm (09f6edd4), but powerpc was omitted.
>
> This patch implements this routine for powerpc.
>
> The symptom, at boot (on powerpc arch systems) with "nohz_full=<CPU
> list>" is displayed:
> NO_HZ: Can't run full dynticks because arch doesn't support irq
> work self-IPIs
>
> after this patch:
> NO_HZ: Full dynticks CPUs: <CPU list>.
>
> Tested against 3.19.
>
> v2: changed "return 1" to "return true", per Michael Ellerman
>
> CC: Frederic Weisbecker <fweis...@gmail.com>
> CC: Paul E. McKenney <paul...@linux.vnet.ibm.com>
> Signed-off-by: Paul A. Clarke <p...@us.ibm.com>
Reviewed-by: Paul E. McKenney <paul...@linux.vnet.ibm.com>
> diff --git a/arch/powerpc/include/asm/irq_work.h
> b/arch/powerpc/include/asm/irq_work.h
> new file mode 100644
> index 0000000..99cc0aa
> --- /dev/null
> +++ b/arch/powerpc/include/asm/irq_work.h
> @@ -0,0 +1,11 @@
> +#ifndef _ASM_IRQ_WORK_H
> +#define _ASM_IRQ_WORK_H
> +
> +#include <asm/processor.h>
> +
> +static inline bool arch_irq_work_has_interrupt(void)
> +{
> + return true;
> +}
> +
> +#endif /* _ASM_IRQ_WORK_H */
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@lists.ozlabs.org
https://lists.ozlabs.org/listinfo/linuxppc-dev
