summaryrefslogtreecommitdiffstats
path: root/kernel/trace/ftrace.c
diff options
context:
space:
mode:
authorSteven Rostedt (Red Hat) <rostedt@goodmis.org>2015-09-30 01:06:50 +0200
committerSteven Rostedt <rostedt@goodmis.org>2015-09-30 21:22:42 +0200
commit55577204154c7a95c6bce4cb185366d638b238b5 (patch)
tree9cbfd57e11d2ee00c015980459fe978b99a8d597 /kernel/trace/ftrace.c
parenttracing: Remove access to trace_flags in trace_printk.c (diff)
downloadlinux-55577204154c7a95c6bce4cb185366d638b238b5.tar.xz
linux-55577204154c7a95c6bce4cb185366d638b238b5.zip
tracing: Move sleep-time and graph-time options out of the core trace_flags
The sleep-time and graph-time options are only for the function graph tracer and are not used by anything else. As tracer options are now visible when the tracer is not activated, its better to move the function graph specific tracer options into the function graph tracer. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/ftrace.c')
-rw-r--r--kernel/trace/ftrace.c19
1 files changed, 17 insertions, 2 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index b0623ac785a2..e76384894147 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -243,6 +243,11 @@ static void ftrace_sync_ipi(void *data)
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
static void update_function_graph_func(void);
+
+/* Both enabled by default (can be cleared by function_graph tracer flags */
+static bool fgraph_sleep_time = true;
+static bool fgraph_graph_time = true;
+
#else
static inline void update_function_graph_func(void) { }
#endif
@@ -917,7 +922,7 @@ static void profile_graph_return(struct ftrace_graph_ret *trace)
calltime = trace->rettime - trace->calltime;
- if (!(trace_flags & TRACE_ITER_GRAPH_TIME)) {
+ if (!fgraph_graph_time) {
int index;
index = trace->depth;
@@ -5639,6 +5644,16 @@ static struct ftrace_ops graph_ops = {
ASSIGN_OPS_HASH(graph_ops, &global_ops.local_hash)
};
+void ftrace_graph_sleep_time_control(bool enable)
+{
+ fgraph_sleep_time = enable;
+}
+
+void ftrace_graph_graph_time_control(bool enable)
+{
+ fgraph_graph_time = enable;
+}
+
int ftrace_graph_entry_stub(struct ftrace_graph_ent *trace)
{
return 0;
@@ -5707,7 +5722,7 @@ ftrace_graph_probe_sched_switch(void *ignore,
* Does the user want to count the time a function was asleep.
* If so, do not update the time stamps.
*/
- if (trace_flags & TRACE_ITER_SLEEP_TIME)
+ if (fgraph_sleep_time)
return;
timestamp = trace_clock_local();