Re: [PATCH v2 07/17] cxl: Add new header for call backs and structs

Michael Ellerman
2014-10-01T12:00:13Z

On Tue, 2014-30-09 at 10:34:56 UTC, Michael Neuling wrote:
> From: Ian Munsie <imunsie@au1.ibm.com>
>
> This new header add defines for callbacks and structs needed by the rest of the
adds
> kernel to hook into the cxl infrastructure.
>
> Empty functions are provided when CONFIG CXL_BASE is not enabled.
>
> Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
> Signed-off-by: Michael Neuling <mikey@neuling.org>
> ---
> include/misc/cxl.h | 34 ++++++++++++++++++++++++++++++++++

include/misc is kind of weird. I guess it's a misc device.

Any reason not to have it in arch/powerpc/include ?

> diff --git a/include/misc/cxl.h b/include/misc/cxl.h
> new file mode 100644
> index 0000000..bde46a3
> --- /dev/null
> +++ b/include/misc/cxl.h
> @@ -0,0 +1,34 @@
> +/*
> + * Copyright 2014 IBM Corp.
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License
> + * as published by the Free Software Foundation; either version
> + * 2 of the License, or (at your option) any later version.
> + */
> +
> +#ifndef _MISC_ASM_CXL_H

No ASM.

> +#define _MISC_ASM_CXL_H
> +
> +#define CXL_IRQ_RANGES 4
> +
> +struct cxl_irq_ranges {
> + irq_hw_number_t offset[CXL_IRQ_RANGES];
> + irq_hw_number_t range[CXL_IRQ_RANGES];
> +};
> +
> +#ifdef CONFIG_CXL_BASE
> +
> +void cxl_slbia(struct mm_struct *mm);
> +void cxl_ctx_get(void);
> +void cxl_ctx_put(void);
> +bool cxl_ctx_in_use(void);
> +
> +#else /* CONFIG_CXL_BASE */
> +
> +#define cxl_slbia(...) do { } while (0)
> +#define cxl_ctx_in_use(...) false

Any reason these shouldn't be static inlines?

cheers