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Subject[PATCH] smp_call_function_single() should be a macro on UP
... or we end up with header include order problems from hell.
E.g. on m68k this is 100% fatal - local_irq_enable() there
wants preempt_count(), which wants task_struct fields, which
we won't have when we are in smp.h pulled from sched.h.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/include/linux/smp.h b/include/linux/smp.h
index 8039dac..259a13c 100644
--- a/include/linux/smp.h
+++ b/include/linux/smp.h
@@ -7,7 +7,6 @@
*/

#include <linux/errno.h>
-#include <asm/system.h>

extern void cpu_idle(void);

@@ -100,15 +99,14 @@ static inline int up_smp_call_function(void)
static inline void smp_send_reschedule(int cpu) { }
#define num_booting_cpus() 1
#define smp_prepare_boot_cpu() do {} while (0)
-static inline int smp_call_function_single(int cpuid, void (*func) (void *info),
- void *info, int retry, int wait)
-{
- WARN_ON(cpuid != 0);
- local_irq_disable();
- func(info);
- local_irq_enable();
- return 0;
-}
+#define smp_call_function_single(cpuid, func, info, retry, wait) \
+({ \
+ WARN_ON(cpuid != 0); \
+ local_irq_disable(); \
+ (func)(info); \
+ local_irq_enable(); \
+ 0; \
+})

#endif /* !SMP */

-
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