1 files changed, 74 insertions, 0 deletions
diff --git a/tools/gator/daemon/PerfGroup.h b/tools/gator/daemon/PerfGroup.h
new file mode 100644
index 000000000000..f30d3a6a9c68
--- /dev/null
+++ b/tools/gator/daemon/PerfGroup.h
@@ -0,0 +1,74 @@
+ /**
+ * Copyright (C) ARM Limited 2013-2015. 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
+
+#include <stdint.h>
+
+// 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,
+	PERF_GROUP_PER_CPU       = 1 << 5,
+	PERF_GROUP_LEADER        = 1 << 6,
+	PERF_GROUP_CPU           = 1 << 7,
+};
+
+enum {
+	PG_SUCCESS = 0,
+	PG_FAILURE,
+	PG_CPU_OFFLINE,
+};
+
+class PerfGroup {
+public:
+	PerfGroup(PerfBuffer *const pb);
+	~PerfGroup();
+
+	bool createCpuGroup(const uint64_t currTime, Buffer *const buffer);
+	bool add(const uint64_t currTime, 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
+	int prepareCPU(const int cpu, Monitor *const monitor);
+	// Not safe to call concurrently. Returns the number of events enabled
+	int onlineCPU(const uint64_t currTime, const int cpu, const bool enable, Buffer *const buffer);
+	bool offlineCPU(int cpu);
+	bool start();
+	void stop();
+
+private:
+	int getEffectiveType(const int type, const int flags);
+	int doAdd(const uint64_t currTime, Buffer *const buffer, const int key, const __u32 type, const __u64 config, const __u64 sample, const __u64 sampleType, const int flags);
+
+	// 2* to be conservative for sched_switch, cpu_idle, hrtimer and non-CPU groups
+	struct perf_event_attr mAttrs[2*MAX_PERFORMANCE_COUNTERS];
+	PerfBuffer *const mPb;
+	int mFlags[2*MAX_PERFORMANCE_COUNTERS];
+	int mKeys[2*MAX_PERFORMANCE_COUNTERS];
+	int mFds[NR_CPUS * (2*MAX_PERFORMANCE_COUNTERS)];
+	// Offset in mAttrs, mFlags and mKeys of the group leaders for each perf type
+	int mLeaders[16];
+	int mSchedSwitchId;
+
+	// Intentionally undefined
+	PerfGroup(const PerfGroup &);
+	PerfGroup &operator=(const PerfGroup &);
+};
+
+#endif // PERF_GROUP