>I built sd_mod.o and sr_mod.o with COMFIG_MODVERSIONS and without SMP and both
>fail to load with an unresolved symbol local_irq_count. Both modules use
>linux/interrupt.h which includes asm/hardirq.h which declares local_irq_count.
>It's defined in arch/i386/kernel/irq.c but never used in this case.
>Maybe it would be a good idea to wrap both the declaration and the definition
>inside ifdef __SMP__.
The following patch should go into 2.1.33 (I lost the e-mail address of the
original poster, but Ingo Molnar and I agree on this one):
--- linux/include/asm-i386/hardirq.h.orig Sat Apr 5 23:43:26 1997
+++ linux/include/asm-i386/hardirq.h Sat Apr 5 23:44:12 1997
@@ -1,9 +1,6 @@
#ifndef __ASM_HARDIRQ_H
#define __ASM_HARDIRQ_H
-extern unsigned int local_irq_count[NR_CPUS];
-#define in_interrupt() (local_irq_count[smp_processor_id()] != 0)
-
#ifndef __SMP__
#define hardirq_trylock(cpu) ((cpu)==0) /* always true */
@@ -12,9 +9,14 @@
#define hardirq_enter(cpu) (local_irq_count[cpu]++)
#define hardirq_exit(cpu) (local_irq_count[cpu]--)
+#define in_interrupt() (intr_count != 0)
+
#define synchronize_irq() do { } while (0)
#else
+
+extern unsigned int local_irq_count[NR_CPUS];
+#define in_interrupt() (local_irq_count[smp_processor_id()] != 0)
extern unsigned char global_irq_holder;
extern unsigned volatile int global_irq_lock;
-- John GOTTS <jgotts@engin.umich.edu> http://www-personal.engin.umich.edu/~jgotts Senior, EE/Motif Programmer/SysAdmin/Linux Hacker/Amateur Radio Callsign N8QDW