Messages in this thread Patch in this message | | | Date | Mon, 19 Jan 2009 19:15:45 -0500 | From | Steven Rostedt <> | Subject | [PATCH 3/8] x86, ftrace, hw-branch-tracer: reset trace buffer on close |
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From: Markus Metzger <markus.t.metzger@intel.com>
Reset the ftrace buffer on close. Since we use cyclic buffers, the trace is not contiguous, anyway.
Signed-off-by: Markus Metzger <markus.t.metzger@intel.com> Signed-off-by: Steven Rostedt <srostedt@redhat.com> --- kernel/trace/trace_hw_branches.c | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/kernel/trace/trace_hw_branches.c b/kernel/trace/trace_hw_branches.c index e56df2c..372b47a 100644 --- a/kernel/trace/trace_hw_branches.c +++ b/kernel/trace/trace_hw_branches.c @@ -274,6 +274,11 @@ static void trace_bts_prepare(struct trace_iterator *iter) 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); @@ -292,7 +297,8 @@ 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) -- 1.5.6.5 --
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