diff options
Diffstat (limited to 'kernel/trace/trace_functions.c')
| -rw-r--r-- | kernel/trace/trace_functions.c | 33 |
1 files changed, 16 insertions, 17 deletions
diff --git a/kernel/trace/trace_functions.c b/kernel/trace/trace_functions.c index e467c0c7bdd5..38cfb290ecd9 100644 --- a/kernel/trace/trace_functions.c +++ b/kernel/trace/trace_functions.c @@ -214,38 +214,37 @@ static struct tracer function_trace __read_mostly = }; #ifdef CONFIG_DYNAMIC_FTRACE -static void -ftrace_traceon(unsigned long ip, unsigned long parent_ip, void **data) +static int update_count(void **data) { - long *count = (long *)data; - - if (tracing_is_on()) - return; + unsigned long *count = (long *)data; if (!*count) - return; + return 0; if (*count != -1) (*count)--; - tracing_on(); + return 1; } static void -ftrace_traceoff(unsigned long ip, unsigned long parent_ip, void **data) +ftrace_traceon(unsigned long ip, unsigned long parent_ip, void **data) { - long *count = (long *)data; - - if (!tracing_is_on()) + if (tracing_is_on()) return; - if (!*count) - return; + if (update_count(data)) + tracing_on(); +} - if (*count != -1) - (*count)--; +static void +ftrace_traceoff(unsigned long ip, unsigned long parent_ip, void **data) +{ + if (!tracing_is_on()) + return; - tracing_off(); + if (update_count(data)) + tracing_off(); } static int |