ftrace: warning in kernel/trace/ftrace.c

this warning:

  kernel/trace/ftrace.c:189: warning: ‘frozen_record_count’ defined but not used

triggers because frozen_record_count is only used in the KCONFIG_MARKERS
case. Move the variable it there.

Alas, this frozen-record facility seems to have little use. The
frozen_record_count variable is not used by anything, nor the flags.

So this section might need a bit of dead-code-removal care as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 2721232..7618c52 100644 (file)
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -186,7 +186,6 @@ enum {
 
 static int ftrace_filtered;
 static int tracing_on;
-static int frozen_record_count;
 
 static LIST_HEAD(ftrace_new_addrs);
 
@@ -211,6 +210,9 @@ static struct dyn_ftrace *ftrace_free_records;
 
 
 #ifdef CONFIG_KPROBES
+
+static int frozen_record_count;
+
 static inline void freeze_record(struct dyn_ftrace *rec)
 {
        if (!(rec->flags & FTRACE_FL_FROZEN)) {
@@ -1443,3 +1445,4 @@ ftrace_enable_sysctl(struct ctl_table *table, int write,
        mutex_unlock(&ftrace_sysctl_lock);
        return ret;
 }
+