linux-kernel - Re: [PATCH v5 04/14] acpi, numa: Move acpi_numa_arch

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Message-ID: <571EF95D.5090703@linaro.org>
Date:	Tue, 26 Apr 2016 13:15:09 +0800
From:	Hanjun Guo <hanjun.guo@...aro.org>
To:	David Daney <ddaney.cavm@...il.com>,
	Will Deacon <will.deacon@....com>,
	linux-arm-kernel@...ts.infradead.org,
	Mark Rutland <mark.rutland@....com>,
	Catalin Marinas <catalin.marinas@....com>,
	Tony Luck <tony.luck@...el.com>,
	Fenghua Yu <fenghua.yu@...el.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Len Brown <lenb@...nel.org>, Rob Herring <robh+dt@...nel.org>,
	Frank Rowand <frowand.list@...il.com>,
	Grant Likely <grant.likely@...aro.org>,
	Robert Moore <robert.moore@...el.com>,
	Lv Zheng <lv.zheng@...el.com>,
	Marc Zyngier <Marc.Zyngier@....com>,
	linux-ia64@...r.kernel.org, linux-acpi@...r.kernel.org,
	devel@...ica.org
Cc:	linux-kernel@...r.kernel.org, Robert Richter <rrichter@...ium.com>,
	David Daney <david.daney@...ium.com>
Subject: Re: [PATCH v5 04/14] acpi, numa: Move acpi_numa_arch_fixup() to ia64
 only

On 2016/4/20 9:40, David Daney wrote:
> From: Robert Richter <rrichter@...ium.com>
>
> Since acpi_numa_arch_fixup() is only used in arch ia64, move it there
> to make a generic interface easier. This avoids empty function stubs
> or some complex kconfig options for x86 and arm64.
>
> Signed-off-by: Robert Richter <rrichter@...ium.com>
> Signed-off-by: David Daney <david.daney@...ium.com>
> ---
>   arch/ia64/include/asm/acpi.h | 3 +++
>   arch/ia64/kernel/acpi.c      | 2 +-
>   arch/ia64/kernel/setup.c     | 1 +
>   arch/x86/mm/srat.c           | 2 --
>   drivers/acpi/numa.c          | 2 --
>   include/linux/acpi.h         | 1 -
>   6 files changed, 5 insertions(+), 6 deletions(-)
>
> diff --git a/arch/ia64/include/asm/acpi.h b/arch/ia64/include/asm/acpi.h
> index aa0fdf1..a3d0211 100644
> --- a/arch/ia64/include/asm/acpi.h
> +++ b/arch/ia64/include/asm/acpi.h
> @@ -140,6 +140,9 @@ static inline void per_cpu_scan_finalize(int min_cpus, int reserve_cpus)
>   		}
>   	}
>   }
> +
> +extern void acpi_numa_fixup(void);
> +
>   #endif /* CONFIG_ACPI_NUMA */
>
>   #endif /*__KERNEL__*/
> diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
> index b1698bc..92b7bc9 100644
> --- a/arch/ia64/kernel/acpi.c
> +++ b/arch/ia64/kernel/acpi.c
> @@ -524,7 +524,7 @@ acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
>   	return 0;
>   }
>
> -void __init acpi_numa_arch_fixup(void)
> +void __init acpi_numa_fixup(void)
>   {
>   	int i, j, node_from, node_to;
>
> diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
> index 2029a38..afddb3e 100644
> --- a/arch/ia64/kernel/setup.c
> +++ b/arch/ia64/kernel/setup.c
> @@ -552,6 +552,7 @@ setup_arch (char **cmdline_p)
>   	early_acpi_boot_init();
>   # ifdef CONFIG_ACPI_NUMA
>   	acpi_numa_init();
> +	acpi_numa_fixup();
>   #  ifdef CONFIG_ACPI_HOTPLUG_CPU
>   	prefill_possible_map();
>   #  endif
> diff --git a/arch/x86/mm/srat.c b/arch/x86/mm/srat.c
> index b5f8218..90b6ed9 100644
> --- a/arch/x86/mm/srat.c
> +++ b/arch/x86/mm/srat.c
> @@ -212,8 +212,6 @@ out_err:
>   	return -1;
>   }
>
> -void __init acpi_numa_arch_fixup(void) {}
> -
>   int __init x86_acpi_numa_init(void)
>   {
>   	int ret;
> diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
> index 2de6068..f41f06b 100644
> --- a/drivers/acpi/numa.c
> +++ b/drivers/acpi/numa.c
> @@ -316,8 +316,6 @@ int __init acpi_numa_init(void)
>   	/* SLIT: System Locality Information Table */
>   	acpi_table_parse(ACPI_SIG_SLIT, acpi_parse_slit);
>
> -	acpi_numa_arch_fixup();
> -
>   	if (cnt < 0)
>   		return cnt;
>   	else if (!parsed_numa_memblks)
> diff --git a/include/linux/acpi.h b/include/linux/acpi.h
> index 06ed7e5..ab6fd96 100644
> --- a/include/linux/acpi.h
> +++ b/include/linux/acpi.h
> @@ -244,7 +244,6 @@ void acpi_numa_slit_init (struct acpi_table_slit *slit);
>   void acpi_numa_processor_affinity_init (struct acpi_srat_cpu_affinity *pa);
>   void acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa);
>   int acpi_numa_memory_affinity_init (struct acpi_srat_mem_affinity *ma);
> -void acpi_numa_arch_fixup(void);
>
>   #ifndef PHYS_CPUID_INVALID
>   typedef u32 phys_cpuid_t;

Reviewed-by: Hanjun Guo <hanjun.guo@...aro.org>

Thanks
Hanjun