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authorSteven Rostedt (Red Hat) <rostedt@goodmis.org>2014-01-10 14:31:31 -0500
committerSteven Rostedt <rostedt@goodmis.org>2014-02-20 12:13:14 -0500
commite6435e96ec6f31a05690876a19e63e451f7b37e2 (patch)
treec4826eb16d4160749f80b2092b74020b7f6055aa /kernel/trace
parentb7e00a6c53e9134d5cf7631582acaf027a5ded26 (diff)
downloadblackbird-op-linux-e6435e96ec6f31a05690876a19e63e451f7b37e2.tar.gz
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ftrace: Copy ops private to global_ops private
If global_ops function is being called directly, instead of the global_ops list function, set the global_ops private to be the same as the ops private that's being called directly. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace')
-rw-r--r--kernel/trace/ftrace.c17
1 files changed, 8 insertions, 9 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index cd7f76d1eb86..98ae4ed965db 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -244,7 +244,11 @@ static void control_ops_free(struct ftrace_ops *ops)
static void update_global_ops(void)
{
- ftrace_func_t func;
+ ftrace_func_t func = ftrace_global_list_func;
+ void *private = NULL;
+
+ /* The list has its own recursion protection. */
+ global_ops.flags |= FTRACE_OPS_FL_RECURSION_SAFE;
/*
* If there's only one function registered, then call that
@@ -254,23 +258,17 @@ static void update_global_ops(void)
if (ftrace_global_list == &ftrace_list_end ||
ftrace_global_list->next == &ftrace_list_end) {
func = ftrace_global_list->func;
+ private = ftrace_global_list->private;
/*
* As we are calling the function directly.
* If it does not have recursion protection,
* the function_trace_op needs to be updated
* accordingly.
*/
- if (ftrace_global_list->flags & FTRACE_OPS_FL_RECURSION_SAFE)
- global_ops.flags |= FTRACE_OPS_FL_RECURSION_SAFE;
- else
+ if (!(ftrace_global_list->flags & FTRACE_OPS_FL_RECURSION_SAFE))
global_ops.flags &= ~FTRACE_OPS_FL_RECURSION_SAFE;
- } else {
- func = ftrace_global_list_func;
- /* The list has its own recursion protection. */
- global_ops.flags |= FTRACE_OPS_FL_RECURSION_SAFE;
}
-
/* If we filter on pids, update to use the pid function */
if (!list_empty(&ftrace_pids)) {
set_ftrace_pid_function(func);
@@ -278,6 +276,7 @@ static void update_global_ops(void)
}
global_ops.func = func;
+ global_ops.private = private;
}
static void ftrace_sync(struct work_struct *work)
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