diff options
Diffstat (limited to 'kernel/trace/fgraph.c')
| -rw-r--r-- | kernel/trace/fgraph.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/kernel/trace/fgraph.c b/kernel/trace/fgraph.c index 8f4fb328133a..218cd95bf8e4 100644 --- a/kernel/trace/fgraph.c +++ b/kernel/trace/fgraph.c @@ -30,6 +30,26 @@ int ftrace_graph_active; /* Both enabled by default (can be cleared by function_graph tracer flags */ static bool fgraph_sleep_time = true; +#ifdef CONFIG_DYNAMIC_FTRACE +/* + * archs can override this function if they must do something + * to enable hook for graph tracer. + */ +int __weak ftrace_enable_ftrace_graph_caller(void) +{ + return 0; +} + +/* + * archs can override this function if they must do something + * to disable hook for graph tracer. + */ +int __weak ftrace_disable_ftrace_graph_caller(void) +{ + return 0; +} +#endif + /** * ftrace_graph_stop - set to permanently disable function graph tracing * @@ -404,9 +424,9 @@ free: static void ftrace_graph_probe_sched_switch(void *ignore, bool preempt, - unsigned int prev_state, struct task_struct *prev, - struct task_struct *next) + struct task_struct *next, + unsigned int prev_state) { unsigned long long timestamp; int index; |