tracing: remove /debug/tracing/latency_trace

Impact: remove old debug/tracing API

/debug/tracing/latency_trace is an old legacy format we kept from
the old latency tracer. Remove the file for now. If there's any
useful bit missing then we'll propagate any useful output bits into
the /debug/tracing/trace output.

Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 0 insertions, 5 deletions

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index e1f3b99a2e52..11ba100f9a9e 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -2938,11 +2938,6 @@ static __init int tracer_init_debugfs(void)
         if (!entry)
                 pr_warning("Could not create debugfs 'tracing_cpumask' entry\n");
 
-        entry = debugfs_create_file("latency_trace", 0444, d_tracer,
-                                    &global_trace, &tracing_lt_fops);
-        if (!entry)
-                pr_warning("Could not create debugfs 'latency_trace' entry\n");
-
         entry = debugfs_create_file("trace", 0444, d_tracer,
                                     &global_trace, &tracing_fops);
         if (!entry)