[PATCH 6/9] arm64: Add new routine local_disable

Catalin Marinas
2014-08-26T16:04:43Z

On Fri, Aug 22, 2014 at 08:49:16PM +0100, Geoff Levand wrote:
> Add the new arm64 routine local_disable() to allow the masking of several DAIF
> flags in one operation. Currently, we only have routines to mask individual
> flags, and to mask several flags multiple calls to daifset are required.
>
> Signed-off-by: Geoff Levand <geoff@infradead.org>
> ---
> arch/arm64/include/asm/irqflags.h | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
>
> diff --git a/arch/arm64/include/asm/irqflags.h b/arch/arm64/include/asm/irqflags.h
> index 11cc941..28521d4 100644
> --- a/arch/arm64/include/asm/irqflags.h
> +++ b/arch/arm64/include/asm/irqflags.h
> @@ -113,5 +113,18 @@ static inline int arch_irqs_disabled_flags(unsigned long flags)
> #define local_dbg_enable() asm("msr daifclr, #8" : : : "memory")
> #define local_dbg_disable() asm("msr daifset, #8" : : : "memory")
>
> +enum daif_flag {
> + DAIF_FIQ = (1UL << 6),
> + DAIF_IRQ = (1UL << 7),
> + DAIF_ASYNC = (1UL << 8),
> + DAIF_DBG = (1UL << 9),
> + DAIF_ALL = (0xffUL << 6),
> +};
> +
> +static inline void local_disable(unsigned long daif_flags)
> +{
> + arch_local_irq_restore(daif_flags | arch_local_save_flags());
> +}

Who's using this function? I don't see any patch in this series calling
it.

--
Catalin