perf counters: clean up state transitions
Impact: cleanup
Introduce a proper enum for the 3 states of a counter:
PERF_COUNTER_STATE_OFF = -1
PERF_COUNTER_STATE_INACTIVE = 0
PERF_COUNTER_STATE_ACTIVE = 1
and rename counter->active to counter->state and propagate the
changes everywhere.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h
index 97d86c2..8cb095f 100644
--- a/include/linux/perf_counter.h
+++ b/include/linux/perf_counter.h
@@ -128,6 +128,15 @@
};
/**
+ * enum perf_counter_active_state - the states of a counter
+ */
+enum perf_counter_active_state {
+ PERF_COUNTER_STATE_OFF = -1,
+ PERF_COUNTER_STATE_INACTIVE = 0,
+ PERF_COUNTER_STATE_ACTIVE = 1,
+};
+
+/**
* struct perf_counter - performance counter kernel representation:
*/
struct perf_counter {
@@ -136,7 +145,7 @@
struct perf_counter *group_leader;
const struct hw_perf_counter_ops *hw_ops;
- int active;
+ enum perf_counter_active_state state;
#if BITS_PER_LONG == 64
atomic64_t count;
#else