1 files changed, 55 insertions, 0 deletions
diff --git a/tools/gator/daemon/PerfGroup.h b/tools/gator/daemon/PerfGroup.h
new file mode 100644
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+++ b/tools/gator/daemon/PerfGroup.h
@@ -0,0 +1,55 @@
+ /**
+ * Copyright (C) ARM Limited 2013-2014. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef PERF_GROUP
+#define PERF_GROUP
+
+// Use a snapshot of perf_event.h as it may be more recent than what is on the target and if not newer features won't be supported anyways
+#include "k/perf_event.h"
+
+#include "Config.h"
+
+class Buffer;
+class Monitor;
+class PerfBuffer;
+
+enum PerfGroupFlags {
+	PERF_GROUP_MMAP          = 1 << 0,
+	PERF_GROUP_COMM          = 1 << 1,
+	PERF_GROUP_FREQ          = 1 << 2,
+	PERF_GROUP_TASK          = 1 << 3,
+	PERF_GROUP_SAMPLE_ID_ALL = 1 << 4,
+};
+
+class PerfGroup {
+public:
+	PerfGroup(PerfBuffer *const pb);
+	~PerfGroup();
+
+	bool add(Buffer *const buffer, const int key, const __u32 type, const __u64 config, const __u64 sample, const __u64 sampleType, const int flags);
+	// Safe to call concurrently
+	bool prepareCPU(const int cpu);
+	// Not safe to call concurrently. Returns the number of events enabled
+	int onlineCPU(const int cpu, const bool start, Buffer *const buffer, Monitor *const monitor);
+	bool offlineCPU(int cpu);
+	bool start();
+	void stop();
+
+private:
+	// +1 for the group leader
+	struct perf_event_attr mAttrs[MAX_PERFORMANCE_COUNTERS + 1];
+	int mKeys[MAX_PERFORMANCE_COUNTERS + 1];
+	int mFds[NR_CPUS * (MAX_PERFORMANCE_COUNTERS + 1)];
+	PerfBuffer *const mPb;
+
+	// Intentionally undefined
+	PerfGroup(const PerfGroup &);
+	PerfGroup &operator=(const PerfGroup &);
+};
+
+#endif // PERF_GROUP