retrace: add support for intel gpu/cpu monitoring

This patch adds support for CPU/GPU monitoring during the execution of a
trace for Intel GPUs. This only works on Linux OS'es, and requires
libpciaccess development library to be built.

The monitoring is controlled by the following options:
 -o output - output tab-separated values into a file
 -p frames - sample cpu/gpu usage for each N frames
 -ps frame - frame to start profiling on
 -pe frame - frame to end profiling on

For example:
eglretrace -p 1500 -ps 300000 -pe 1800000 -o profile.dat
~/intel/traces/glbenchmark.egypt.egl

will profile 'glbenchmark.egypt.egl' trace, starting on frame 300000 and
ending on frame 1800000, sampling CPU and GPU usage for each 1500 frames.
The output will be saved into 'profile.dat'.

To plot the GPU usage from said log file, the following command can be
used:

echo "pl 'profile.dat' u 2:6 w l title 'GPU usage'" | gnuplot -p

Signed-off-by: Eugeni Dodonov <eugeni@dodonov.net>

1 files changed, 72 insertions, 0 deletions

diff --git a/intel_stats.h b/intel_stats.h
new file mode 100644
index 0000000..d2accd8
--- /dev/null
+++ b/intel_stats.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright © 2012 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Eugeni Dodonov <eugeni.dodonov@intel.com>
+ *
+ */
+
+#ifndef _INTEL_STATS_HPP_
+#define _INTEL_STATS_HPP_
+
+extern "C" {
+
+#include <sys/types.h>
+#include <pthread.h>
+#include <pciaccess.h>
+#include <stdio.h>
+#include <string.h>
+
+#define LP_RING     0x2030
+#define RING_HEAD      0x04
+#define HEAD_ADDR           0x001FFFFC
+#define RING_TAIL      0x00
+#define TAIL_ADDR           0x000FFFF8
+#define SAMPLES_PER_SEC     1000000
+
+#define PCI_CHIP_I830_M			0x3577
+#define PCI_CHIP_845_G			0x2562
+#define PCI_CHIP_I855_GM		0x3582
+#define PCI_CHIP_I865_G			0x2572
+
+#define IS_GEN2(devid)      (devid == PCI_CHIP_I830_M || \
+                 devid == PCI_CHIP_845_G || \
+                 devid == PCI_CHIP_I855_GM || \
+                 devid == PCI_CHIP_I865_G)
+
+struct _Stats {
+    struct timeval user;
+    struct timeval system;
+    unsigned long long gpu;
+    unsigned long long gpuidle;
+    struct timeval time;
+};
+typedef struct _Stats Stats;
+
+void m_init();
+void m_reset();
+void *m_monitor(void *data);
+Stats m_count();
+
+}
+
+#endif /* _INTEL_STATS_HPP_ */