---

yaml --- r: 116604 b: refs/heads/master c: 3b47bfc h: refs/heads/master v: v3
git-mirror · Oct 14, 2008 · 6e2a320 · 6e2a320
1 parent c06f07b
commit 6e2a320
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Showing 2 changed files with 10 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: e5a81b629ea8feb9e7530cfac35cfb41c45facf3
+refs/heads/master: 3b47bfc1fca01cccad9cce2d18b79b18ef2e4131
diff --git a/trunk/kernel/trace/ftrace.c b/trunk/kernel/trace/ftrace.c
@@ -36,6 +36,14 @@
 int ftrace_enabled __read_mostly;
 static int last_ftrace_enabled;
 
+/*
+ * Since MCOUNT_ADDR may point to mcount itself, we do not want
+ * to get it confused by reading a reference in the code as we
+ * are parsing on objcopy output of text. Use a variable for
+ * it instead.
+ */
+static unsigned long mcount_addr = MCOUNT_ADDR;
+
 /*
  * ftrace_disabled is set when an anomaly is discovered.
  * ftrace_disabled is much stronger than ftrace_enabled.
@@ -577,7 +585,7 @@ ftrace_code_disable(struct dyn_ftrace *rec)
 	ip = rec->ip;
 
 	nop = ftrace_nop_replace();
-	call = ftrace_call_replace(ip, MCOUNT_ADDR);
+	call = ftrace_call_replace(ip, mcount_addr);
 
 	failed = ftrace_modify_code(ip, call, nop);
 	if (failed) {