From: "Frédéric Weisbecker" <fweisbec@gmail.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
Steven Noonan <steven@uplinklabs.net>
Subject: [Patch 1/3] Tracing/ftrace: Make nop tracer reset previous entries
Date: Sun, 21 Sep 2008 20:10:14 +0200 [thread overview]
Message-ID: <48D68E06.50504@gmail.com> (raw)
If nop tracer is selected, some old entries from the previous tracer could still be enqueued. Tracing have to be reset.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
---
diff -rup linux-2.6-tip (2)/kernel/trace/trace_nop.c linux-2.6-tip/kernel/trace/trace_nop.c
--- linux-2.6-tip (2)/kernel/trace/trace_nop.c 2008-09-19 18:01:26.000000000 +0200
+++ linux-2.6-tip/kernel/trace/trace_nop.c 2008-09-21 00:44:47.000000000 +0200
@@ -25,8 +25,12 @@ static void stop_nop_trace(struct trace_
}
static void nop_trace_init(struct trace_array *tr)
-{
- ctx_trace = tr;
+{
+ int cpu;
+ ctx_trace = tr;
+
+ for_each_online_cpu(cpu)
+ tracing_reset(tr->data[cpu]);
if (tr->ctrl)
start_nop_trace(tr);
next reply other threads:[~2008-09-21 18:10 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-21 18:10 Frédéric Weisbecker [this message]
2008-09-22 3:13 ` [Patch 1/3] Tracing/ftrace: Make nop tracer reset previous entries KOSAKI Motohiro
2008-09-22 9:36 ` Ingo Molnar
2008-09-22 12:06 ` Frédéric Weisbecker
2008-09-22 12:10 ` Ingo Molnar
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