Instead of initializing the pm notifier block in register_ftrace_graph(),
initialize it statically. This safes us some code.
Found in the PaX patch, written by the PaX Team.
Cc: PaX Team <pagee...@freemail.hu>
Signed-off-by: Mathias Krause <mini...@googlemail.com>
---
kernel/trace/ftrace.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index cd7f76d1eb..a4d74eb000 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -4909,7 +4909,6 @@ ftrace_enable_sysctl(struct ctl_table *table, int write,
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
static int ftrace_graph_active;
-static struct notifier_block ftrace_suspend_notifier;
int ftrace_graph_entry_stub(struct ftrace_graph_ent *trace)
{
@@ -5086,6 +5085,10 @@ static void update_function_graph_func(void)
ftrace_graph_entry = ftrace_graph_entry_test;
}
+static struct notifier_block ftrace_suspend_notifier = {
+ .notifier_call = ftrace_suspend_notifier_call,
+};
+
int register_ftrace_graph(trace_func_graph_ret_t retfunc,
trace_func_graph_ent_t entryfunc)
{
@@ -5099,7 +5102,6 @@ int register_ftrace_graph(trace_func_graph_ret_t retfunc,
goto out;
}
- ftrace_suspend_notifier.notifier_call = ftrace_suspend_notifier_call;
register_pm_notifier(&ftrace_suspend_notifier);
ftrace_graph_active++;
--
1.7.10.4
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