void ftrace_modify_all_code(int command)
{
int update = command & FTRACE_UPDATE_TRACE_FUNC;
+ int err = 0;
/*
* If the ftrace_caller calls a ftrace_ops func directly,
* to make sure the ops are having the right functions
* traced.
*/
- if (update)
- ftrace_update_ftrace_func(ftrace_ops_list_func);
+ if (update) {
+ err = ftrace_update_ftrace_func(ftrace_ops_list_func);
+ if (FTRACE_WARN_ON(err))
+ return;
+ }
if (command & FTRACE_UPDATE_CALLS)
ftrace_replace_code(1);
/* If irqs are disabled, we are in stop machine */
if (!irqs_disabled())
smp_call_function(ftrace_sync_ipi, NULL, 1);
- ftrace_update_ftrace_func(ftrace_trace_function);
+ err = ftrace_update_ftrace_func(ftrace_trace_function);
+ if (FTRACE_WARN_ON(err))
+ return;
}
if (command & FTRACE_START_FUNC_RET)
- ftrace_enable_ftrace_graph_caller();
+ err = ftrace_enable_ftrace_graph_caller();
else if (command & FTRACE_STOP_FUNC_RET)
- ftrace_disable_ftrace_graph_caller();
+ err = ftrace_disable_ftrace_graph_caller();
+ FTRACE_WARN_ON(err);
}
static int __ftrace_modify_code(void *data)