trace-cmd: Reset page at ever read by tracecmd_read_at()

The timestamp was getting messed up by various reads of
tracecmd_read_at(). This resets the page everytime that
function is used.

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

1 files changed, 8 insertions, 7 deletions

diff --git a/trace-input.c b/trace-input.c
index d6fc93e..80de3cf 100644
--- a/trace-input.c
+++ b/trace-input.c
@@ -723,14 +723,15 @@ read_event(struct tracecmd_input *handle, unsigned long long offset,
 
         /*
          * Since the timestamp is calculated from the beginnnig
-         * of the page and through each event, we need to start
-         * with the timestamp. We can't go backwards.
-         * If the offset is behind the current offset then we
-         * need to calculate it again.
+         * of the page and through each event, we reset the
+         * page to the beginning. This is just used by
+         * tracecmd_read_at.
          */
-        if (offset < handle->cpu_data[cpu].offset +
-            handle->cpu_data[cpu].index)
-                handle->cpu_data[cpu].index = 0;
+        update_page_info(handle, cpu);
+        if (handle->cpu_data[cpu].next) {
+                free_record(handle->cpu_data[cpu].next);
+                handle->cpu_data[cpu].next = NULL;
+        }
 
         do {
                 if (record)