X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Flinux%2Foprofile.h;h=041bb31100f48fd780b9505cf21842be36cdb68f;hb=2e824ad59f678a1ff920144fda9b7dd0815fc010;hp=0d514b252454478a71e4706bc3b693e6b3d7941a;hpb=3e8e7c93d7eb091463839b5212789c4aae09459e;p=linux-2.6

diff --git a/include/linux/oprofile.h b/include/linux/oprofile.h
index 0d514b2524..041bb31100 100644
--- a/include/linux/oprofile.h
+++ b/include/linux/oprofile.h
@@ -17,6 +17,26 @@
 #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
+
 struct super_block;
 struct dentry;
 struct file_operations;
@@ -35,6 +55,14 @@ 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);
 	/* CPU identification string. */
@@ -55,6 +83,13 @@ int oprofile_arch_init(struct oprofile_operations * ops);
  */
 void oprofile_arch_exit(void);
 
+/**
+ * Add data to the event buffer.
+ * The data passed is free-form, but typically consists of
+ * file offsets, dcookies, context information, and ESCAPE codes.
+ */
+void add_event_entry(unsigned long data);
+
 /**
  * Add a sample. This may be called from any context. Pass
  * smp_processor_id() as cpu.