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Subject[PATCH 5/5] tracing: make power tracer start/stop methods lighter weight
From: Steven Rostedt <srostedt@redhat.com>

The start/stop methods of a tracer should be able to be executed
in all contexts. This patch converts the power tracer to do so.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
kernel/trace/trace_power.c | 8 ++++++--
1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/kernel/trace/trace_power.c b/kernel/trace/trace_power.c
index 91ce672..bae791e 100644
--- a/kernel/trace/trace_power.c
+++ b/kernel/trace/trace_power.c
@@ -122,12 +122,16 @@ fail_start:
static void start_power_trace(struct trace_array *tr)
{
trace_power_enabled = 1;
- tracing_power_register();
}

static void stop_power_trace(struct trace_array *tr)
{
trace_power_enabled = 0;
+}
+
+static void power_trace_reset(struct trace_array *tr)
+{
+ trace_power_enabled = 0;
unregister_trace_power_start(probe_power_start);
unregister_trace_power_end(probe_power_end);
unregister_trace_power_mark(probe_power_mark);
@@ -188,7 +192,7 @@ static struct tracer power_tracer __read_mostly =
.init = power_trace_init,
.start = start_power_trace,
.stop = stop_power_trace,
- .reset = stop_power_trace,
+ .reset = power_trace_reset,
.print_line = power_print_line,
};

--
1.6.2
--


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