diff options
Diffstat (limited to 'kernel/trace/ftrace.c')
| -rw-r--r-- | kernel/trace/ftrace.c | 17 |
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) |