/* total number of cpus in this system (may exceed NR_CPUS) */
extern unsigned int total_cpus;
+int smp_call_function_single(int cpuid, void (*func) (void *info), void *info,
+ int wait);
+
#ifdef CONFIG_SMP
#include <linux/preempt.h>
/*
* main cross-CPU interfaces, handles INIT, TLB flush, STOP, etc.
* (defined in asm header):
- */
+ */
/*
* stops all CPUs but the current one:
void smp_call_function_many(const struct cpumask *mask,
void (*func)(void *info), void *info, bool wait);
-/* Deprecated: Use smp_call_function_many which takes a pointer to the mask. */
-static inline int
-smp_call_function_mask(cpumask_t mask, void(*func)(void *info), void *info,
- int wait)
-{
- smp_call_function_many(&mask, func, info, wait);
- return 0;
-}
-
-int smp_call_function_single(int cpuid, void (*func) (void *info), void *info,
+void __smp_call_function_single(int cpuid, struct call_single_data *data,
int wait);
-void __smp_call_function_single(int cpuid, struct call_single_data *data);
+
+int smp_call_function_any(const struct cpumask *mask,
+ void (*func)(void *info), void *info, int wait);
/*
* Generic and arch helpers
#else /* !SMP */
+static inline void smp_send_stop(void) { }
+
/*
* These macros fold the SMP functionality into a single CPU system
*/
static inline void smp_send_reschedule(int cpu) { }
#define num_booting_cpus() 1
#define smp_prepare_boot_cpu() do {} while (0)
-#define smp_call_function_single(cpuid, func, info, wait) \
-({ \
- WARN_ON(cpuid != 0); \
- local_irq_disable(); \
- (func)(info); \
- local_irq_enable(); \
- 0; \
-})
-#define smp_call_function_mask(mask, func, info, wait) \
- (up_smp_call_function(func, info))
#define smp_call_function_many(mask, func, info, wait) \
(up_smp_call_function(func, info))
-static inline void init_call_single_data(void)
+static inline void init_call_single_data(void) { }
+
+static inline int
+smp_call_function_any(const struct cpumask *mask, void (*func)(void *info),
+ void *info, int wait)
{
+ return smp_call_function_single(0, func, info, wait);
}
+
#endif /* !SMP */
/*
#define get_cpu() ({ preempt_disable(); smp_processor_id(); })
#define put_cpu() preempt_enable()
-#define put_cpu_no_resched() preempt_enable_no_resched()
+
+/*
+ * Callback to arch code if there's nosmp or maxcpus=0 on the
+ * boot command line:
+ */
+extern void arch_disable_smp_support(void);
void smp_setup_processor_id(void);