check in the original version of dde linux26.

1 files changed, 181 insertions, 0 deletions

diff --git a/libdde_linux26/contrib/include/linux/smp.h b/libdde_linux26/contrib/include/linux/smp.h
new file mode 100644
index 00000000..715196b0
--- /dev/null
+++ b/libdde_linux26/contrib/include/linux/smp.h
@@ -0,0 +1,181 @@
+#ifndef __LINUX_SMP_H
+#define __LINUX_SMP_H
+
+/*
+ *	Generic SMP support
+ *		Alan Cox. <alan@redhat.com>
+ */
+
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/cpumask.h>
+
+extern void cpu_idle(void);
+
+struct call_single_data {
+	struct list_head list;
+	void (*func) (void *info);
+	void *info;
+	u16 flags;
+	u16 priv;
+};
+
+/* 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>
+#include <linux/kernel.h>
+#include <linux/compiler.h>
+#include <linux/thread_info.h>
+#include <asm/smp.h>
+
+/*
+ * main cross-CPU interfaces, handles INIT, TLB flush, STOP, etc.
+ * (defined in asm header):
+ */ 
+
+/*
+ * stops all CPUs but the current one:
+ */
+extern void smp_send_stop(void);
+
+/*
+ * sends a 'reschedule' event to another CPU:
+ */
+extern void smp_send_reschedule(int cpu);
+
+
+/*
+ * Prepare machine for booting other CPUs.
+ */
+extern void smp_prepare_cpus(unsigned int max_cpus);
+
+/*
+ * Bring a CPU up
+ */
+extern int __cpu_up(unsigned int cpunum);
+
+/*
+ * Final polishing of CPUs
+ */
+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 wait);
+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;
+}
+
+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 ipi_call_lock(void);
+void ipi_call_unlock(void);
+void ipi_call_lock_irq(void);
+void ipi_call_unlock_irq(void);
+#endif
+
+/*
+ * Call a function on all processors
+ */
+int on_each_cpu(void (*func) (void *info), void *info, int wait);
+
+#define MSG_ALL_BUT_SELF	0x8000	/* Assume <32768 CPU's */
+#define MSG_ALL			0x8001
+
+#define MSG_INVALIDATE_TLB	0x0001	/* Remote processor TLB invalidate */
+#define MSG_STOP_CPU		0x0002	/* Sent to shut down slave CPU's
+					 * when rebooting
+					 */
+#define MSG_RESCHEDULE		0x0003	/* Reschedule request from master CPU*/
+#define MSG_CALL_FUNCTION       0x0004  /* Call function on all other CPUs */
+
+/*
+ * Mark the boot cpu "online" so that it can call console drivers in
+ * printk() and can access its per-cpu storage.
+ */
+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 (*func)(void *), void *info)
+{
+	return 0;
+}
+#define smp_call_function(func, info, wait) \
+			(up_smp_call_function(func, info))
+#define on_each_cpu(func,info,wait)		\
+	({					\
+		local_irq_disable();		\
+		func(info);			\
+		local_irq_enable();		\
+		0;				\
+	})
+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_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)
+{
+}
+#endif /* !SMP */
+
+/*
+ * smp_processor_id(): get the current CPU ID.
+ *
+ * if DEBUG_PREEMPT is enabled the we check whether it is
+ * used in a preemption-safe way. (smp_processor_id() is safe
+ * if it's used in a preemption-off critical section, or in
+ * a thread that is bound to the current CPU.)
+ *
+ * NOTE: raw_smp_processor_id() is for internal use only
+ * (smp_processor_id() is the preferred variant), but in rare
+ * instances it might also be used to turn off false positives
+ * (i.e. smp_processor_id() use that the debugging code reports but
+ * which use for some reason is legal). Don't use this to hack around
+ * the warning message, as your code might not work under PREEMPT.
+ */
+#ifdef CONFIG_DEBUG_PREEMPT
+  extern unsigned int debug_smp_processor_id(void);
+# define smp_processor_id() debug_smp_processor_id()
+#else
+# define smp_processor_id() raw_smp_processor_id()
+#endif
+
+#define get_cpu()		({ preempt_disable(); smp_processor_id(); })
+#define put_cpu()		preempt_enable()
+#define put_cpu_no_resched()	preempt_enable_no_resched()
+
+void smp_setup_processor_id(void);
+
+#endif /* __LINUX_SMP_H */