On Tue, 2 Sep 2014, Bartlomiej Zolnierkiewicz wrote:
> Commit 532d0d0690d1 ("irqchips: Replace __this_cpu_ptr uses")
> incorrectly converted *__this_cpu_ptr() to raw_cpu_read() instead
> of *raw_cpu_ptr(). Fix it.
Oww.. This is double indirection deal there. A percpu offset pointing to
a pointer?
Generally the following is true (definition from
include/asm-generic/percpu.h that is used for ARM for raw_cpu_read):
#define raw_cpu_read_4(pcp) (*raw_cpu_ptr(&(pcp)))
> Index: b/drivers/irqchip/irq-gic.c
> ===================================================================
> --- a/drivers/irqchip/irq-gic.c 2014-09-02 14:03:41.026758653 +0200
> +++ b/drivers/irqchip/irq-gic.c 2014-09-02 14:37:04.466811546 +0200
> @@ -102,7 +102,7 @@ static struct gic_chip_data gic_data[MAX
> #ifdef CONFIG_GIC_NON_BANKED
> static void __iomem *gic_get_percpu_base(union gic_base *base)
> {
> - return raw_cpu_read(base->percpu_base);
> + return *raw_cpu_ptr(base->percpu_base);
> }
>
> static void __iomem *gic_get_common_base(union gic_base *base)
>
>
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