/* tracer_enabled is used to toggle activation of a tracer */
static int tracer_enabled = 1;
+/* function tracing enabled */
+int ftrace_function_enabled;
+
/*
* trace_nr_entries is the number of entries that is allocated
* for a buffer. Note, the number of entries is always rounded
{
int cpu;
+ ftrace_function_enabled = 0;
if(tr->ctrl)
for_each_online_cpu(cpu)
tracing_reset(tr->data[cpu]);
long disabled;
int cpu;
- if (unlikely(!tracer_enabled))
+ if (unlikely(!ftrace_function_enabled))
return;
if (skip_trace(ip))
void tracing_start_function_trace(void)
{
+ ftrace_function_enabled = 0;
register_ftrace_function(&trace_ops);
+ if (tracer_enabled)
+ ftrace_function_enabled = 1;
}
void tracing_stop_function_trace(void)
{
+ ftrace_function_enabled = 0;
unregister_ftrace_function(&trace_ops);
}
#endif
static void *s_next(struct seq_file *m, void *v, loff_t *pos)
{
struct trace_iterator *iter = m->private;
- void *last_ent = iter->ent;
int i = (int)*pos;
void *ent;
iter->pos = *pos;
- if (last_ent && !ent)
- seq_puts(m, "\n\nvim:ft=help\n");
-
return ent;
}
"server",
#elif defined(CONFIG_PREEMPT_VOLUNTARY)
"desktop",
-#elif defined(CONFIG_PREEMPT_DESKTOP)
+#elif defined(CONFIG_PREEMPT)
"preempt",
#else
"unknown",
m->private = iter;
/* stop the trace while dumping */
- if (iter->tr->ctrl)
+ if (iter->tr->ctrl) {
tracer_enabled = 0;
+ ftrace_function_enabled = 0;
+ }
if (iter->trace && iter->trace->open)
iter->trace->open(iter);
iter->trace->close(iter);
/* reenable tracing if it was previously enabled */
- if (iter->tr->ctrl)
+ if (iter->tr->ctrl) {
tracer_enabled = 1;
+ /*
+ * It is safe to enable function tracing even if it
+ * isn't used
+ */
+ ftrace_function_enabled = 1;
+ }
mutex_unlock(&trace_types_lock);
seq_release(inode, file);
pr_warning("Could not create debugfs "
"'dyn_ftrace_total_info' entry\n");
#endif
+#ifdef CONFIG_SYSPROF_TRACER
+ init_tracer_sysprof_debugfs(d_tracer);
+#endif
}
static int trace_alloc_page(void)