Reset the ftrace buffer on close. Since we use cyclic buffers, the
trace is not contiguous, anyway.
Signed-off-by: Markus Metzger <[email protected]>
---
Index: ftrace/kernel/trace/trace_hw_branches.c
===================================================================
--- ftrace.orig/kernel/trace/trace_hw_branches.c 2009-01-16 16:20:04.000000000 +0100
+++ ftrace/kernel/trace/trace_hw_branches.c 2009-01-19 09:18:54.000000000 +0100
@@ -270,6 +270,11 @@ static void trace_bts_prepare(struct tra
mutex_unlock(&bts_tracer_mutex);
}
+static void trace_bts_close(struct trace_iterator *iter)
+{
+ tracing_reset_online_cpus(iter->tr);
+}
+
void trace_hw_branch_oops(void)
{
mutex_lock(&bts_tracer_mutex);
@@ -288,7 +293,8 @@ struct tracer bts_tracer __read_mostly =
.print_line = bts_trace_print_line,
.start = bts_trace_start,
.stop = bts_trace_stop,
- .open = trace_bts_prepare
+ .open = trace_bts_prepare,
+ .close = trace_bts_close
};
__init static int init_bts_trace(void)
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