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smp_call_function_single() should be a macro on UP

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... 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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Al Viro 2007-07-17 22:29:46 +01:00 committed by Linus Torvalds
parent 44052e0d91
commit 8dfd588c31
1 changed files with 8 additions and 10 deletions
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18
include/linux/smp.h
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@ -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 */