1 files changed, 4 insertions, 0 deletions

diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index f765465bffe4..49491fa7daa2 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -3239,6 +3239,10 @@ rb_get_reader_page(struct ring_buffer_per_cpu *cpu_buffer)
         if (cpu_buffer->commit_page == cpu_buffer->reader_page)
                 goto out;
 
+        /* Don't bother swapping if the ring buffer is empty */
+        if (rb_num_of_entries(cpu_buffer) == 0)
+                goto out;
+
         /*
          * Reset the reader page to size zero.
          */