tracing: Remove lock_depth from event entry

The lock_depth field in the event headers was added as a temporary
data point for help in removing the BKL. Now that the BKL is pretty
much been removed, we can remove this field.

This in turn changes the header from 12 bytes to 8 bytes,
removing the 4 byte buffer that gcc would insert if the first field
in the data load was 8 bytes in size.

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

1 files changed, 2 insertions, 8 deletions

diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index 02272baa2206..151f32e5f2c6 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -529,7 +529,7 @@ seq_print_ip_sym(struct trace_seq *s, unsigned long ip, unsigned long sym_flags)
  * @entry: The trace entry field from the ring buffer
  *
  * Prints the generic fields of irqs off, in hard or softirq, preempt
- * count and lock depth.
+ * count.
  */
 int trace_print_lat_fmt(struct trace_seq *s, struct trace_entry *entry)
 {
@@ -554,13 +554,7 @@ int trace_print_lat_fmt(struct trace_seq *s, struct trace_entry *entry)
         else
                 ret = trace_seq_putc(s, '.');
 
-        if (!ret)
-                return 0;
-
-        if (entry->lock_depth < 0)
-                return trace_seq_putc(s, '.');
-
-        return trace_seq_printf(s, "%d", entry->lock_depth);
+        return ret;
 }
 
 static int