Add generic helpers for arch IPI function calls

[linux-2.6-omap-h63xx.git] / include / linux / smp.h

diff --git a/include/linux/smp.h b/include/linux/smp.h
index 96ac21f8dd735ae2db06d9f16048bec4c8e40a23..eac3e062250f7e24e98ac6355daa5ef280b98dda 100644 (file)
--- a/include/linux/smp.h
+++ b/include/linux/smp.h
@@ -7,9 +7,19 @@
  */
 
 #include <linux/errno.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/cpumask.h>
 
 extern void cpu_idle(void);
 
+struct call_single_data {
+       struct list_head list;
+       void (*func) (void *info);
+       void *info;
+       unsigned int flags;
+};
+
 #ifdef CONFIG_SMP
 
 #include <linux/preempt.h>
@@ -53,9 +63,28 @@ extern void smp_cpus_done(unsigned int max_cpus);
  * Call a function on all other processors
  */
 int smp_call_function(void(*func)(void *info), void *info, int retry, int wait);
-
+int smp_call_function_mask(cpumask_t mask, void(*func)(void *info), void *info,
+                               int wait);
 int smp_call_function_single(int cpuid, void (*func) (void *info), void *info,
                                int retry, int wait);
+void __smp_call_function_single(int cpuid, struct call_single_data *data);
+
+/*
+ * Generic and arch helpers
+ */
+#ifdef CONFIG_USE_GENERIC_SMP_HELPERS
+void generic_smp_call_function_single_interrupt(void);
+void generic_smp_call_function_interrupt(void);
+void init_call_single_data(void);
+void ipi_call_lock(void);
+void ipi_call_unlock(void);
+void ipi_call_lock_irq(void);
+void ipi_call_unlock_irq(void);
+#else
+static inline void init_call_single_data(void)
+{
+}
+#endif
 
 /*
  * Call a function on all processors
@@ -78,17 +107,20 @@ int on_each_cpu(void (*func) (void *info), void *info, int retry, int wait);
  */
 void smp_prepare_boot_cpu(void);
 
+extern unsigned int setup_max_cpus;
+
 #else /* !SMP */
 
 /*
  *     These macros fold the SMP functionality into a single CPU system
  */
 #define raw_smp_processor_id()                 0
-static inline int up_smp_call_function(void)
+static inline int up_smp_call_function(void (*func)(void *), void *info)
 {
        return 0;
 }
-#define smp_call_function(func,info,retry,wait)        (up_smp_call_function())
+#define smp_call_function(func, info, retry, wait) \
+                       (up_smp_call_function(func, info))
 #define on_each_cpu(func,info,retry,wait)      \
        ({                                      \
                local_irq_disable();            \
@@ -99,12 +131,19 @@ 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)
+#define smp_call_function_single(cpuid, func, info, retry, 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))
+static inline void init_call_single_data(void)
 {
-       return -EBUSY;
 }
-
 #endif /* !SMP */
 
 /*