The sparc64 kernel's EXPORT_SYMBOL(_mcount) is inside an
#ifdef CONFIG_SMP. This breaks modules in non-SMP kernels
built with stack overflow checking (CONFIG_STACK_DEBUG=y),
as modules_install reports:
WARNING: /lib/modules/2.6.17/kernel/drivers/ide/ide-cd.ko needs unknown symbol _mcount
Trivially fixed by moving EXPORT_SYMBOL(_mcount) outside of
the #ifdef CONFIG_SMP.
Signed-off-by: Mikael Pettersson <[email protected]>
--- linux-2.6.17/arch/sparc64/kernel/sparc64_ksyms.c.~1~ 2006-06-18 12:13:02.000000000 +0200
+++ linux-2.6.17/arch/sparc64/kernel/sparc64_ksyms.c 2006-07-04 20:41:07.000000000 +0200
@@ -128,11 +128,6 @@ EXPORT_SYMBOL(__write_trylock);
/* Hard IRQ locking */
EXPORT_SYMBOL(synchronize_irq);
-#if defined(CONFIG_MCOUNT)
-extern void _mcount(void);
-EXPORT_SYMBOL(_mcount);
-#endif
-
/* CPU online map and active count. */
EXPORT_SYMBOL(cpu_online_map);
EXPORT_SYMBOL(phys_cpu_present_map);
@@ -140,6 +135,11 @@ EXPORT_SYMBOL(phys_cpu_present_map);
EXPORT_SYMBOL(smp_call_function);
#endif /* CONFIG_SMP */
+#if defined(CONFIG_MCOUNT)
+extern void _mcount(void);
+EXPORT_SYMBOL(_mcount);
+#endif
+
EXPORT_SYMBOL(sparc64_get_clock_tick);
/* semaphores */
-
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