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Subject: Re: 2.5.4-pre6 fails to build on UP (sched.c)
From: Robert Love <rml@tech9.net>
To: Alessandro Suardi <alessandro.suardi@oracle.com>
Cc: linux-kernel@vger.kernel.org
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Date: 10 Feb 2002 18:23:27 -0500
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On Sun, 2002-02-10 at 17:44, Alessandro Suardi wrote:

> It appears that global_irq_holder will only be seen from
>  <asm/hardirq.h> if CONFIG_SMP is defined. I haven't dug
>  deeper to see whether this is due to CONFIG_PREEMPT (to
>  which I said 'Y') or not.

Indeed, there is a compile error if preemption is enabled but SMP is
not.  I apologize.  Fix is attached.

	Robert Love

diff -urN linux-2.5.4-pre6/include/asm-i386/smplock.h linux/include/asm-i386/smplock.h
--- linux-2.5.4-pre6/include/asm-i386/smplock.h	Sun Feb 10 15:35:55 2002
+++ linux/include/asm-i386/smplock.h	Sun Feb 10 18:15:55 2002
@@ -15,6 +15,7 @@
 #else
 #ifdef CONFIG_PREEMPT
 #define kernel_locked()		preempt_get_count()
+#define global_irq_holder	0
 #else
 #define kernel_locked()		1
 #endif

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