Merge branch 'user_unwind'

1 files changed, 29 insertions, 2 deletions

diff --git a/runtime/sym.c b/runtime/sym.c
index f6f97ac2..013edd0c 100644
--- a/runtime/sym.c
+++ b/runtime/sym.c
@@ -329,8 +329,35 @@ static void _stp_symbol_print(unsigned long address)
 	}
 }
 
+/** Print an user space address from a specific task symbolically.
+ * @param address The address to lookup.
+ * @param task The address to lookup.
+ * @note Symbolic lookups should not normally be done within
+ * a probe because it is too time-consuming. Use at module exit time.
+ */
+
+static void _stp_usymbol_print(unsigned long address, struct task_struct *task)
+{
+	const char *modname;
+	const char *name;
+	unsigned long offset, size;
+
+	name = _stp_kallsyms_lookup(address, &size, &offset, &modname, NULL,
+                                    task);
+
+	_stp_printf("%p", (int64_t) address);
+
+	if (name) {
+		if (modname && *modname)
+			_stp_printf(" : %s+%#lx/%#lx [%s]", name, offset, size, modname);
+		else
+			_stp_printf(" : %s+%#lx/%#lx", name, offset, size);
+	}
+}
+
 /* Like _stp_symbol_print, except only print if the address is a valid function address */
-static int _stp_func_print(unsigned long address, int verbose, int exact)
+static int _stp_func_print(unsigned long address, int verbose, int exact,
+                           struct task_struct *task)
 {
 	const char *modname;
 	const char *name;
@@ -342,7 +369,7 @@ static int _stp_func_print(unsigned long address, int verbose, int exact)
 	else
 		exstr = " (inexact)";
 
-	name = _stp_kallsyms_lookup(address, &size, &offset, &modname, NULL, NULL);
+	name = _stp_kallsyms_lookup(address, &size, &offset, &modname, NULL, task);
 
 	if (name) {
 		if (verbose) {