misc: tegra-profiler: add group samples

Group CPU cycles and cache misses samples.
To reduce the amount of data passed from the target to the host,
we can group samples that have a lot of common information.

Bug 1447582

Change-Id: I9b16bf4f18455ff6219fd58373eceba4cb71e352
Signed-off-by: Igor Nabirushkin <inabirushkin@nvidia.com>
Reviewed-on: http://git-master/r/360133
(cherry picked from commit c71f7e558a9c36752d8f845a17e64aaa9ccf90a2)

1 files changed, 51 insertions, 36 deletions

diff --git a/include/linux/tegra_profiler.h b/include/linux/tegra_profiler.h
index b122b97dd..e3f90a268 100644
--- a/include/linux/tegra_profiler.h
+++ b/include/linux/tegra_profiler.h
@@ -1,7 +1,7 @@
 /*
  * include/linux/tegra_profiler.h
  *
- * Copyright (c) 2013, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2014, NVIDIA CORPORATION.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -19,7 +19,7 @@
 
 #include <linux/ioctl.h>
 
-#define QUADD_SAMPLES_VERSION   17
+#define QUADD_SAMPLES_VERSION   18
 #define QUADD_IO_VERSION        9
 
 #define QUADD_IO_VERSION_DYNAMIC_RB             5
@@ -29,6 +29,7 @@
 #define QUADD_IO_VERSION_GET_MMAP               9
 
 #define QUADD_SAMPLE_VERSION_THUMB_MODE_FLAG    17
+#define QUADD_SAMPLE_VERSION_GROUP_SAMPLES      18
 
 #define QUADD_MAX_COUNTERS      32
 #define QUADD_MAX_PROCESS       64
@@ -93,8 +94,6 @@ enum quadd_events_id {
         QUADD_EVENT_TYPE_MAX,
 };
 
-#pragma pack(push, 4)
-
 struct event_data {
         int event_source;
         int event_id;
@@ -125,49 +124,56 @@ enum quadd_cpu_mode {
         QUADD_CPU_MODE_NONE,
 };
 
-struct quadd_sample_data {
-        u32 event_id;
+typedef u32 quadd_bt_addr_t;
+
+#pragma pack(push, 1)
 
-        u32 ip;
+struct quadd_sample_data {
+        u64 ip;
         u32 pid;
         u64 time;
-        u32 cpu;
-        u64 period;
 
-        u32 callchain_nr;
+        u16     cpu:6,
+                user_mode:1,
+                lp_mode:1,
+                thumb_mode:1,
+                reserved:7;
+
+        u8 callchain_nr;
+        u32 events_flags;
 };
 
 struct quadd_mmap_data {
         u32 pid;
-        u32 addr;
+        u64 addr;
         u64 len;
-        u64 pgoff;
+        u32 pgoff;
 
-        u32 filename_length;
+        u16 filename_length;
 };
 
 struct quadd_ma_data {
         u32 pid;
         u64 time;
 
-        u64 vm_size;
-        u64 rss_size;
+        u32 vm_size;
+        u32 rss_size;
 };
 
 struct quadd_power_rate_data {
         u64 time;
 
-        u32 nr_cpus;
+        u8 nr_cpus;
 
         u32 gpu;
         u32 emc;
 };
 
 struct quadd_additional_sample {
-        u32 type;
+        u8 type;
 
-        u32 values[8];
-        u32 extra_length;
+        u32 values[6];
+        u16 extra_length;
 };
 
 enum {
@@ -186,42 +192,48 @@ enum {
 };
 
 struct quadd_debug_data {
-        u32 type;
+        u8 type;
 
-        u32 cpu;
         u32 pid;
         u64 time;
 
-        u64 timer_period;
+        u16     cpu:6,
+                user_mode:1,
+                lp_mode:1,
+                thumb_mode:1,
+                reserved:7;
 
-        u32 extra_value1;
-        u32 extra_value2;
-        u32 extra_value3;
+        u32 extra_value[2];
+        u16 extra_length;
 };
 
+#define QUADD_HEADER_MAGIC      0x1122
 
 struct quadd_header_data {
-        u32 version;
+        u16 magic;
+        u16 version;
 
         u32     backtrace:1,
                 use_freq:1,
                 system_wide:1,
                 power_rate:1,
-                debug_samples:1;
+                debug_samples:1,
+                get_mmap:1,
+                reserved:26;    /* reserved fields for future extensions */
 
-        u64 period;
-        u32 ma_period;
-        u32 power_rate_period;
+        u32 freq;
+        u16 ma_freq;
+        u16 power_rate_freq;
 
-        u32 reserved[4];        /* reserved fields for future extensions */
+        u8 nr_events;
+        u16 extra_length;
 };
 
-#define QUADD_RECORD_MAGIC      0x33557799
+#define QUADD_RECORD_MAGIC      0x335577aa
 
 struct quadd_record_data {
-        u32 magic;      /* for debug */
-        u32 record_type;
-        u32 cpu_mode;
+        u32 magic;      /* temporary, it will be removed later */
+        u8 record_type;
 
         union {
                 struct quadd_sample_data        sample;
@@ -232,7 +244,9 @@ struct quadd_record_data {
                 struct quadd_power_rate_data    power_rate;
                 struct quadd_additional_sample  additional_sample;
         };
-};
+} __aligned(4);
+
+#pragma pack(4)
 
 #define QUADD_MAX_PACKAGE_NAME  320
 
@@ -286,6 +300,7 @@ enum {
 
 #define QUADD_COMM_CAP_EXTRA_BT_KERNEL_CTX      (1 << 0)
 #define QUADD_COMM_CAP_EXTRA_GET_MMAP           (1 << 1)
+#define QUADD_COMM_CAP_EXTRA_GROUP_SAMPLES      (1 << 2)
 
 struct quadd_comm_cap {
         u32     pmu:1,