linux-kernel - [PATCH 3.17 069/146] arm64: Fix compilation error on UP builds

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Message-Id: <20141028033346.374601462@linuxfoundation.org>
Date:	Tue, 28 Oct 2014 11:33:31 +0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Catalin Marinas <catalin.marinas@....com>,
	Guenter Roeck <linux@...ck-us.net>
Subject: [PATCH 3.17 069/146] arm64: Fix compilation error on UP builds

3.17-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Catalin Marinas <catalin.marinas@....com>

commit ceab3fe69408cb98f437dad3b4b4bb79434370ef upstream.

In file included from ./arch/arm64/include/asm/irq_work.h:4:0,
        from include/linux/irq_work.h:46,
        from include/linux/perf_event.h:49,
        from include/linux/ftrace_event.h:9,
        from include/trace/syscall.h:6,
        from include/linux/syscalls.h:81,
        from init/main.c:18:
./arch/arm64/include/asm/smp.h:24:3:
        error: #error "<asm/smp.h> included in non-SMP build"
 # error "<asm/smp.h> included in non-SMP build"

Signed-off-by: Catalin Marinas <catalin.marinas@....com>
Fixes: 3631073659d0 ("arm64: Tell irq work about self IPI support")
Reported-by: Guenter Roeck <linux@...ck-us.net>
Tested-by: Guenter Roeck <linux@...ck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm64/include/asm/irq_work.h |   11 +++++++++++
 1 file changed, 11 insertions(+)

--- a/arch/arm64/include/asm/irq_work.h
+++ b/arch/arm64/include/asm/irq_work.h
@@ -1,6 +1,8 @@
 #ifndef __ASM_IRQ_WORK_H
 #define __ASM_IRQ_WORK_H
 
+#ifdef CONFIG_SMP
+
 #include <asm/smp.h>
 
 static inline bool arch_irq_work_has_interrupt(void)
@@ -8,4 +10,13 @@ static inline bool arch_irq_work_has_int
 	return !!__smp_cross_call;
 }
 
+#else
+
+static inline bool arch_irq_work_has_interrupt(void)
+{
+	return false;
+}
+
+#endif
+
 #endif /* __ASM_IRQ_WORK_H */


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