1 files changed, 60 insertions, 0 deletions
diff --git a/overlay/perf.h b/overlay/perf.h
new file mode 100644
index 00000000..e2be0f7e
--- /dev/null
+++ b/overlay/perf.h
@@ -0,0 +1,60 @@
+#ifndef I915_PERF_H
+#define I915_PERF_H
+
+#include <linux/perf_event.h>
+
+#define I915_SAMPLE_BUSY	0
+#define I915_SAMPLE_WAIT	1
+#define I915_SAMPLE_SEMA	2
+
+#define I915_SAMPLE_RCS		0
+#define I915_SAMPLE_VCS		1
+#define I915_SAMPLE_BCS		2
+#define I915_SAMPLE_VECS	3
+
+#define __I915_PERF_COUNT(ring, id) ((ring) << 4 | (id))
+
+#define I915_PERF_COUNT_RCS_BUSY __I915_PERF_COUNT(I915_SAMPLE_RCS, I915_SAMPLE_BUSY)
+#define I915_PERF_COUNT_RCS_WAIT __I915_PERF_COUNT(I915_SAMPLE_RCS, I915_SAMPLE_WAIT)
+#define I915_PERF_COUNT_RCS_SEMA __I915_PERF_COUNT(I915_SAMPLE_RCS, I915_SAMPLE_SEMA)
+
+#define I915_PERF_COUNT_VCS_BUSY __I915_PERF_COUNT(I915_SAMPLE_VCS, I915_SAMPLE_BUSY)
+#define I915_PERF_COUNT_VCS_WAIT __I915_PERF_COUNT(I915_SAMPLE_VCS, I915_SAMPLE_WAIT)
+#define I915_PERF_COUNT_VCS_SEMA __I915_PERF_COUNT(I915_SAMPLE_VCS, I915_SAMPLE_SEMA)
+
+#define I915_PERF_COUNT_BCS_BUSY __I915_PERF_COUNT(I915_SAMPLE_BCS, I915_SAMPLE_BUSY)
+#define I915_PERF_COUNT_BCS_WAIT __I915_PERF_COUNT(I915_SAMPLE_BCS, I915_SAMPLE_WAIT)
+#define I915_PERF_COUNT_BCS_SEMA __I915_PERF_COUNT(I915_SAMPLE_BCS, I915_SAMPLE_SEMA)
+
+#define I915_PERF_COUNT_VECS_BUSY __I915_PERF_COUNT(I915_SAMPLE_VECS, I915_SAMPLE_BUSY)
+#define I915_PERF_COUNT_VECS_WAIT __I915_PERF_COUNT(I915_SAMPLE_VECS, I915_SAMPLE_WAIT)
+#define I915_PERF_COUNT_VECS_SEMA __I915_PERF_COUNT(I915_SAMPLE_VECS, I915_SAMPLE_SEMA)
+
+#define I915_PERF_ACTUAL_FREQUENCY 32
+#define I915_PERF_REQUESTED_FREQUENCY 33
+#define I915_PERF_ENERGY 34
+#define I915_PERF_INTERRUPTS 35
+
+static inline int
+perf_event_open(struct perf_event_attr *attr,
+		pid_t pid,
+		int cpu,
+		int group_fd,
+		unsigned long flags)
+{
+#ifndef __NR_perf_event_open
+#if defined(__i386__)
+#define __NR_perf_event_open 336
+#elif defined(__x86_64__)
+#define __NR_perf_event_open 298
+#else
+#define __NR_perf_event_open 0
+#endif
+#endif
+    attr->size = sizeof(*attr);
+    return syscall(__NR_perf_event_open, attr, pid, cpu, group_fd, flags);
+}
+
+uint64_t i915_type_id(void);
+
+#endif /* I915_PERF_H */