[PATCH 5/5] ring-buffer: reset timestamps when ring buffer is reset

[Steven Rostedt <rostedt@goodmis.org>]

[-- Attachment #1: 0005-ring-buffer-reset-timestamps-when-ring-buffer-is-re.patch --]
[-- Type: text/plain, Size: 814 bytes --]

From: Steven Rostedt <srostedt@redhat.com>

Impact: fix bad times of recent resets

The ring buffer needs to reset its timestamps when reseting of the
buffer, otherwise the timestamps are stale and might be used to
calculate times in the buffer causing funny timestamps to appear.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
 kernel/trace/ring_buffer.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index cb260dd..b36d737 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -2166,6 +2166,9 @@ rb_reset_cpu(struct ring_buffer_per_cpu *cpu_buffer)
 
 	cpu_buffer->overrun = 0;
 	cpu_buffer->entries = 0;
+
+	cpu_buffer->write_stamp = 0;
+	cpu_buffer->read_stamp = 0;
 }
 
 /**
-- 
1.5.6.5

--