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tracing/ftrace: make nop tracer reset previous entries

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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>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Steven Noonan <steven@uplinklabs.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Frédéric Weisbecker 2008-09-21 20:10:14 +02:00 committed by Ingo Molnar
parent 8925b394ec
commit 35cb5ed012
1 changed files with 4 additions and 0 deletions
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4
kernel/trace/trace_nop.c
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@ -26,8 +26,12 @@ static void stop_nop_trace(struct trace_array *tr)
static void nop_trace_init(struct trace_array *tr) static void nop_trace_init(struct trace_array *tr)
{ {
int cpu;
ctx_trace = tr; ctx_trace = tr;
for_each_online_cpu(cpu)
tracing_reset(tr->data[cpu]);
if (tr->ctrl) if (tr->ctrl)
start_nop_trace(tr); start_nop_trace(tr);
} }