tracing: Add internal ftrace trace_puts() for ftrace to use

There's a few places that ftrace uses trace_printk() for internal
use, but this requires context (normal, softirq, irq, NMI) buffers
to keep things lockless. But the trace_puts() does not, as it can
write the string directly into the ring buffer. Make a internal helper
for trace_puts() and have the internal functions use that.

This way the extra context buffers are not used.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 5043a0c4dde0..d372c6504c99 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -443,16 +443,16 @@ void tracing_snapshot(void)
         unsigned long flags;
 
         if (!tr->allocated_snapshot) {
-                trace_printk("*** SNAPSHOT NOT ALLOCATED ***\n");
-                trace_printk("*** stopping trace here!   ***\n");
+                internal_trace_puts("*** SNAPSHOT NOT ALLOCATED ***\n");
+                internal_trace_puts("*** stopping trace here!   ***\n");
                 tracing_off();
                 return;
         }
 
         /* Note, snapshot can not be used when the tracer uses it */
         if (tracer->use_max_tr) {
-                trace_printk("*** LATENCY TRACER ACTIVE ***\n");
-                trace_printk("*** Can not use snapshot (sorry) ***\n");
+                internal_trace_puts("*** LATENCY TRACER ACTIVE ***\n");
+                internal_trace_puts("*** Can not use snapshot (sorry) ***\n");
                 return;
         }