diff options
| -rw-r--r-- | kernel/trace/ftrace.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 4d90c916b2b..c7f4a4be05d 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -347,8 +347,10 @@ static int function_stat_cmp(void *p1, void *p2) static int function_stat_headers(struct seq_file *m) { #ifdef CONFIG_FUNCTION_GRAPH_TRACER - seq_printf(m, " Function Hit Time\n" - " -------- --- ----\n"); + seq_printf(m, " Function " + "Hit Time Avg\n" + " -------- " + "--- ---- ---\n"); #else seq_printf(m, " Function Hit\n" " -------- ---\n"); @@ -361,12 +363,9 @@ static int function_stat_show(struct seq_file *m, void *v) struct ftrace_profile *rec = v; char str[KSYM_SYMBOL_LEN]; #ifdef CONFIG_FUNCTION_GRAPH_TRACER - static struct trace_seq s; static DEFINE_MUTEX(mutex); - - mutex_lock(&mutex); - trace_seq_init(&s); - trace_print_graph_duration(rec->time, &s); + static struct trace_seq s; + unsigned long long avg; #endif kallsyms_lookup(rec->ip, NULL, NULL, NULL, str); @@ -374,6 +373,14 @@ static int function_stat_show(struct seq_file *m, void *v) #ifdef CONFIG_FUNCTION_GRAPH_TRACER seq_printf(m, " "); + avg = rec->time; + do_div(avg, rec->counter); + + mutex_lock(&mutex); + trace_seq_init(&s); + trace_print_graph_duration(rec->time, &s); + trace_seq_puts(&s, " "); + trace_print_graph_duration(avg, &s); trace_print_seq(m, &s); mutex_unlock(&mutex); #endif |