From 5a90d39d40a4360db4715408190aee558dbc3813 Mon Sep 17 00:00:00 2001
From: hunt <hunt>
Date: Wed, 31 Aug 2005 18:24:26 +0000
Subject: [PATCH] 2005-08-31  Martin Hunt  <hunt@redhat.com>

	* sym.c (_stp_kallsyms_lookup): Moved to runtime.h.
	* stack.c (_stp_kta): Moved to runtime.h.
	* runtime.h (init_module): Initialize _stp_kallsyms_lookup
	and _stp_kta.
	* probes.c (_stp_lookup_name): Replaced by kallsyms_lookup_name().
---
 runtime/ChangeLog |  5 +++++
 runtime/probes.c  | 13 +++----------
 runtime/runtime.h |  8 ++++++++
 runtime/stack.c   |  2 --
 runtime/sym.c     | 11 -----------
 5 files changed, 16 insertions(+), 23 deletions(-)

diff --git a/runtime/ChangeLog b/runtime/ChangeLog
index aeb21685e..b8d8087d6 100644
--- a/runtime/ChangeLog
+++ b/runtime/ChangeLog
@@ -1,5 +1,10 @@
 2005-08-31  Martin Hunt  <hunt@redhat.com>
 
+	* sym.c (_stp_kallsyms_lookup): Moved to runtime.h. 
+	* stack.c (_stp_kta): Moved to runtime.h.
+	* runtime.h (init_module): Initialize _stp_kallsyms_lookup
+	and _stp_kta.
+	* probes.c (_stp_lookup_name): Replaced by kallsyms_lookup_name().
 	* list.c (_stp_copy_argv_from_user): ifdef this function
 	NEED_STRING_VALS.
 
diff --git a/runtime/probes.c b/runtime/probes.c
index bb4109158..139d53aa2 100644
--- a/runtime/probes.c
+++ b/runtime/probes.c
@@ -5,13 +5,6 @@
  * @brief Functions to assist loading and unloading groups of probes.
  */
 
-/** Lookup name.
- * This simply calls the kernel function kallsyms_lookup_name().
- * That function is not exported, so this workaround is required.
- * See the kernel source, kernel/kallsyms.c for more information.
- */
-static unsigned long (*_stp_lookup_name)(char *name)=(void *)KALLSYMS_LOOKUP_NAME;
-
 /** Unregister a group of jprobes.
  * @param probes Pointer to an array of struct jprobe.
  * @param num_probes Number of probes in the array.
@@ -37,7 +30,7 @@ int _stp_register_jprobes (struct jprobe *probes, int num_probes)
 	unsigned long addr;
 
 	for (i = 0; i < num_probes; i++) {
-		addr =_stp_lookup_name((char *)probes[i].kp.addr);
+		addr =kallsyms_lookup_name((char *)probes[i].kp.addr);
 		if (addr == 0) {
 			_stp_warn("function %s not found!\n", (char *)probes[i].kp.addr);
 			ret = -1; /* FIXME */
@@ -95,7 +88,7 @@ int _stp_register_kprobes (struct kprobe *probes, int num_probes)
 	unsigned long addr;
 
 	for (i = 0; i < num_probes; i++) {
-		addr =_stp_lookup_name((char *)probes[i].addr);
+		addr = kallsyms_lookup_name((char *)probes[i].addr);
 		if (addr == 0) {
 			_stp_warn("function %s not found!\n", (char *)probes[i].addr);
 			ret = -1;
@@ -126,7 +119,7 @@ int _stp_register_kretprobes (struct kretprobe *probes, int num_probes)
 	unsigned long addr;
 
 	for (i = 0; i < num_probes; i++) {
-		addr =_stp_lookup_name((char *)probes[i].kp.addr);
+		addr = kallsyms_lookup_name((char *)probes[i].kp.addr);
 		if (addr == 0) {
 			_stp_warn("function %s not found!\n", 
 				   (char *)probes[i].kp.addr);
diff --git a/runtime/runtime.h b/runtime/runtime.h
index 5e77505b3..6189a92c1 100644
--- a/runtime/runtime.h
+++ b/runtime/runtime.h
@@ -61,11 +61,19 @@ static struct
 #include "arith.c"
 #include "copy.c"
 
+static int (*_stp_kta)(unsigned long addr);
+static const char * (*_stp_kallsyms_lookup)(unsigned long addr,
+					    unsigned long *symbolsize,
+					    unsigned long *offset,
+					    char **modname, char *namebuf);
+
 /************* Module Stuff ********************/
 int probe_start(void);
 
 int init_module (void)
 {
+  _stp_kta = (int (*)(unsigned long))kallsyms_lookup_name("__kernel_text_address");
+  _stp_kallsyms_lookup = (const char * (*)())kallsyms_lookup_name("kallsyms_lookup");
   return _stp_transport_init();
 }
 
diff --git a/runtime/stack.c b/runtime/stack.c
index 1f7073f54..ba0c9935b 100644
--- a/runtime/stack.c
+++ b/runtime/stack.c
@@ -20,8 +20,6 @@
 #include "sym.c"
 #include "regs.h"
 
-static int (*_stp_kta)(unsigned long addr)=(void *)KTA;
-
 #if defined (__x86_64__)
 
 static void __stp_stack_sprint (String str, unsigned long *stack, int verbose, int levels)
diff --git a/runtime/sym.c b/runtime/sym.c
index a1c04a65d..107f6b338 100644
--- a/runtime/sym.c
+++ b/runtime/sym.c
@@ -9,17 +9,6 @@
  * @{
  */
 
-/** Lookup symbol.
- * This simply calls the kernel function kallsyms_lookup().
- * That function is not exported, so this workaround is required.
- * See the kernel source, kernel/kallsyms.c for more information.
- */
-static const char * (*_stp_kallsyms_lookup)(unsigned long addr,
-			    unsigned long *symbolsize,
-			    unsigned long *offset,
-			    char **modname, char *namebuf)=(void *)KALLSYMS_LOOKUP;
-
-
 /** Write addresses symbolically into a String
  * @param str String
  * @param address The address to lookup.
-- 
2.43.5