Re: [PATCH v2 08/15] xen/asm-generic: introduce generic header percpu.h

[Oleksii <oleksii.kurochko@xxxxxxxxx>]

I have to drop arch specific headers and switch to asm-generic version.
I'll do the same for patches 09-12 in the next patch version.

~ Oleksii
On Fri, 2023-11-10 at 18:30 +0200, Oleksii Kurochko wrote:
> Signed-off-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
> ---
> Changes in V2:
>         - use smp_processor_id() instead of get_processor_id().
>         - update commit message .
> ---
>  xen/include/asm-generic/percpu.h | 35
> ++++++++++++++++++++++++++++++++
>  1 file changed, 35 insertions(+)
>  create mode 100644 xen/include/asm-generic/percpu.h
> 
> diff --git a/xen/include/asm-generic/percpu.h b/xen/include/asm-
> generic/percpu.h
> new file mode 100644
> index 0000000000..85a3f3ef17
> --- /dev/null
> +++ b/xen/include/asm-generic/percpu.h
> @@ -0,0 +1,35 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
> +#ifndef __ASM_GENERIC_PERCPU_H__
> +#define __ASM_GENERIC_PERCPU_H__
> +
> +#ifndef __ASSEMBLY__
> +
> +#include <xen/types.h>
> +
> +extern char __per_cpu_start[], __per_cpu_data_end[];
> +extern unsigned long __per_cpu_offset[NR_CPUS];
> +void percpu_init_areas(void);
> +
> +#define per_cpu(var, cpu)  \
> +    (*RELOC_HIDE(&per_cpu__##var, __per_cpu_offset[cpu]))
> +
> +#define this_cpu(var) \
> +    (*RELOC_HIDE(&per_cpu__##var,
> __per_cpu_offset[smp_processor_id()]))
> +
> +#define per_cpu_ptr(var, cpu)  \
> +    (*RELOC_HIDE(var, __per_cpu_offset[cpu]))
> +#define this_cpu_ptr(var) \
> +    (*RELOC_HIDE(var, smp_processor_id()))
> +
> +#endif
> +
> +#endif /* __ASM_GENERIC_PERCPU_H__ */
> +
> +/*
> + * Local variables:
> + * mode: C
> + * c-file-style: "BSD"
> + * c-basic-offset: 4
> + * indent-tabs-mode: nil
> + * End:
> + */