rcu: Stopgap fix for synchronize_rcu_expedited() for TREE_PREEMPT_RCU

[safe/jmp/linux-2.6] / include / linux / oprofile.h

diff --git a/include/linux/oprofile.h b/include/linux/oprofile.h
index 0d514b2..5171639 100644 (file)
--- a/include/linux/oprofile.h
+++ b/include/linux/oprofile.h
@@ -17,6 +17,28 @@
 #include <linux/spinlock.h>
 #include <asm/atomic.h>
  
+/* Each escaped entry is prefixed by ESCAPE_CODE
+ * then one of the following codes, then the
+ * relevant data.
+ * These #defines live in this file so that arch-specific
+ * buffer sync'ing code can access them.
+ */
+#define ESCAPE_CODE                    ~0UL
+#define CTX_SWITCH_CODE                        1
+#define CPU_SWITCH_CODE                        2
+#define COOKIE_SWITCH_CODE             3
+#define KERNEL_ENTER_SWITCH_CODE       4
+#define KERNEL_EXIT_SWITCH_CODE                5
+#define MODULE_LOADED_CODE             6
+#define CTX_TGID_CODE                  7
+#define TRACE_BEGIN_CODE               8
+#define TRACE_END_CODE                 9
+#define XEN_ENTER_SWITCH_CODE          10
+#define SPU_PROFILING_CODE             11
+#define SPU_CTX_SWITCH_CODE            12
+#define IBS_FETCH_CODE                 13
+#define IBS_OP_CODE                    14
+
 struct super_block;
 struct dentry;
 struct file_operations;
@@ -35,8 +57,19 @@ struct oprofile_operations {
        int (*start)(void);
        /* Stop delivering interrupts. */
        void (*stop)(void);
+       /* Arch-specific buffer sync functions.
+        * Return value = 0:  Success
+        * Return value = -1: Failure
+        * Return value = 1:  Run generic sync function
+        */
+       int (*sync_start)(void);
+       int (*sync_stop)(void);
+
        /* Initiate a stack backtrace. Optional. */
        void (*backtrace)(struct pt_regs * const regs, unsigned int depth);
+
+       /* Multiplex between different events. Optional. */
+       int (*switch_events)(void);
        /* CPU identification string. */
        char * cpu_type;
 };
@@ -56,8 +89,7 @@ int oprofile_arch_init(struct oprofile_operations * ops);
 void oprofile_arch_exit(void);
 
 /**
- * Add a sample. This may be called from any context. Pass
- * smp_processor_id() as cpu.
+ * Add a sample. This may be called from any context.
  */
 void oprofile_add_sample(struct pt_regs * const regs, unsigned long event);
 
@@ -125,5 +157,32 @@ int oprofilefs_ulong_from_user(unsigned long * val, char const __user * buf, siz
 
 /** lock for read/write safety */
 extern spinlock_t oprofilefs_lock;
+
+/**
+ * Add the contents of a circular buffer to the event buffer.
+ */
+void oprofile_put_buff(unsigned long *buf, unsigned int start,
+                       unsigned int stop, unsigned int max);
+
+unsigned long oprofile_get_cpu_buffer_size(void);
+void oprofile_cpu_buffer_inc_smpl_lost(void);
  
+/* cpu buffer functions */
+
+struct op_sample;
+
+struct op_entry {
+       struct ring_buffer_event *event;
+       struct op_sample *sample;
+       unsigned long size;
+       unsigned long *data;
+};
+
+void oprofile_write_reserve(struct op_entry *entry,
+                           struct pt_regs * const regs,
+                           unsigned long pc, int code, int size);
+int oprofile_add_data(struct op_entry *entry, unsigned long val);
+int oprofile_add_data64(struct op_entry *entry, u64 val);
+int oprofile_write_commit(struct op_entry *entry);
+
 #endif /* OPROFILE_H */