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Message-ID: <20160815153546.GF22320@e104818-lin.cambridge.arm.com>
Date: Mon, 15 Aug 2016 16:35:46 +0100
From: Catalin Marinas <catalin.marinas@....com>
To: David Daney <ddaney.cavm@...il.com>
Cc: Will Deacon <will.deacon@....com>,
linux-arm-kernel@...ts.infradead.org,
Mark Rutland <mark.rutland@....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>,
Hanjun Guo <hanjun.guo@...aro.org>,
Marc Zyngier <Marc.Zyngier@....com>,
linux-ia64@...r.kernel.org, linux-acpi@...r.kernel.org,
devel@...ica.org, Robert Richter <rrichter@...ium.com>,
Ganapatrao Kulkarni <gkulkarni@...iumnetworks.com>,
linux-kernel@...r.kernel.org, David Daney <david.daney@...ium.com>
Subject: Re: [PATCH v7 14/15] arm64, acpi, numa: NUMA support based on SRAT
and SLIT
On Tue, May 24, 2016 at 03:35:44PM -0700, David Daney wrote:
> diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h
> index aee323b..4b13ecd 100644
> --- a/arch/arm64/include/asm/acpi.h
> +++ b/arch/arm64/include/asm/acpi.h
> @@ -113,4 +113,12 @@ static inline const char *acpi_get_enable_method(int cpu)
> pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr);
> #endif
>
> +#ifdef CONFIG_ACPI_NUMA
> +int arm64_acpi_numa_init(void);
> +int acpi_numa_get_nid(unsigned int cpu, u64 hwid);
> +#else
> +static inline int arm64_acpi_numa_init(void) { return -ENOSYS; }
> +static inline int acpi_numa_get_nid(unsigned int cpu, u64 hwid) { return NUMA_NO_NODE; }
> +#endif /* CONFIG_ACPI_NUMA */
> +
> #endif /*_ASM_ACPI_H*/
Apparently this doesn't always build since asm/acpi.h is conditionally
included from linux/acpi.h only when CONFIG_ACPI is enabled. Disabling
this option on arm64 leads to:
arch/arm64/mm/numa.c: In function ‘arm64_numa_init’:
arch/arm64/mm/numa.c:395:24: error: ‘arm64_acpi_numa_init’ undeclared (first use in this function)
if (!acpi_disabled && !numa_init(arm64_acpi_numa_init))
I'll fix it in arch/arm64 by including asm/acpi.h directly as we do in a
couple of other files:
------------------8<------------------------------
>From 9a83bf400e0b4ef066b83eeaecdbca909b8491ea Mon Sep 17 00:00:00 2001
From: Catalin Marinas <catalin.marinas@....com>
Date: Mon, 15 Aug 2016 16:33:10 +0100
Subject: [PATCH] arm64: Fix NUMA build error when !CONFIG_ACPI
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Since asm/acpi.h is only included by linux/acpi.h when CONFIG_ACPI is
enabled, disabling the latter leads to the following build error on
arm64:
arch/arm64/mm/numa.c: In function ‘arm64_numa_init’:
arch/arm64/mm/numa.c:395:24: error: ‘arm64_acpi_numa_init’ undeclared (first use in this function)
if (!acpi_disabled && !numa_init(arm64_acpi_numa_init))
This patch include the asm/acpi.h explicitly in arch/arm64/mm/numa.c for
the arm64_acpi_numa_init() definition.
Fixes: d8b47fca8c23 ("arm64, ACPI, NUMA: NUMA support based on SRAT and SLIT")
Signed-off-by: Catalin Marinas <catalin.marinas@....com>
---
arch/arm64/mm/numa.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/mm/numa.c b/arch/arm64/mm/numa.c
index c7fe3ec70774..5bb15eab6f00 100644
--- a/arch/arm64/mm/numa.c
+++ b/arch/arm64/mm/numa.c
@@ -23,6 +23,8 @@
#include <linux/module.h>
#include <linux/of.h>
+#include <asm/acpi.h>
+
struct pglist_data *node_data[MAX_NUMNODES] __read_mostly;
EXPORT_SYMBOL(node_data);
nodemask_t numa_nodes_parsed __initdata;
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