nvdla: kmd: Add ftrace support

+ Replace eventlib with ftrace for Linux-OOT kernel
+ Added event logging for:
 * job_submit
 * job_prefence
 * job_postfence
 * job_timestamps

JIRA DLA-6820

Change-Id: I4d1ad1b535b2422257e9e1dce8d94ee317c65feb
Signed-off-by: Akshata Bhat <akshatab@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2906273
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Amit Sharma (SW-TEGRA) <amisharma@nvidia.com>
Reviewed-by: Arvind M <am@nvidia.com>
Reviewed-by: Ken Adams <kadams@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>

drivers/video/tegra/host/nvdla/nvdla_queue.c

@@ -22,6 +22,9 @@
 #include "nvdla_debug.h"
 #include "dla_os_interface.h"
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/nvdla_ftrace.h>
+
 #define NVDLA_QUEUE_ABORT_TIMEOUT	10000	/* 10 sec */
 #define NVDLA_QUEUE_ABORT_RETRY_PERIOD	500	/* 500 ms */
 
@@ -31,6 +34,12 @@ struct nvdla_add_fence_action_cb_args {
 	u8 **mem;
 };
 
+/* Computing a unique id to identify a task in a particular queue */
+static uint32_t nvdla_compute_task_id(u16 sequence_id, u16 queue_id)
+{
+	return (queue_id << 16 | sequence_id);
+}
+
 /* task management API's */
 static void nvdla_queue_dump_op(struct nvdla_queue *queue, struct seq_file *s)
 {
@@ -330,14 +339,16 @@ static void nvdla_queue_update(void *priv)
 	u64 timestamp_start, timestamp_end;
 	u64 *timestamp_ptr;
 	int n_tasks_completed = 0;
-
+	uint32_t task_id;
+	int i;
 	mutex_lock(&queue->list_lock);
 
 	nvdla_dbg_fn(pdev, "");
 
 	/* check which task(s) finished */
 	list_for_each_entry_safe(task, safe, &queue->tasklist, list) {
-
+		task_id = nvdla_compute_task_id(task->task_desc->sequence,
+				task->task_desc->queue_id);
 		task_complete = nvhost_syncpt_is_expired_ext(pdev,
 					queue->syncpt_id, task->fence);
 
@@ -354,21 +365,16 @@ static void nvdla_queue_update(void *priv)
 			timestamp_end = *timestamp_ptr >> 5;
 			timestamp_start = (*timestamp_ptr -
 					(tsp_notifier->info32 * 1000)) >> 5;
-			nvhost_eventlib_log_task(pdev,
+
-				queue->syncpt_id,
+		if (IS_ENABLED(CONFIG_TRACING)) {
-				task->fence,
+			trace_job_timestamps(task_id, timestamp_start, timestamp_end);
-				timestamp_start,
-				timestamp_end);
 
 			/* Record task postfences */
-			nvhost_eventlib_log_fences(pdev,
+			for (i = 0; i < task->num_postfences; i++) {
-				queue->syncpt_id,
+				trace_job_postfence(task_id, task->postfences[i].syncpoint_index,
-				task->fence,
+						task->postfences[i].syncpoint_value);
-				task->postfences,
+			}
-				task->num_postfences,
+		}
-				NVDEV_FENCE_KIND_POST,
-				timestamp_end);
-
 			nvdla_task_free_locked(task);
 			n_tasks_completed++;
 		}
@@ -1179,7 +1185,7 @@ int nvdla_emulator_submit(struct nvdla_queue *queue, struct nvdla_emu_task *task
 			continue;
 
 		if ((task->prefences[i].type == NVDEV_FENCE_TYPE_SYNCPT) ||
-		    (task->prefences[i].type == NVDEV_FENCE_TYPE_SYNC_FD)) {
+			(task->prefences[i].type == NVDEV_FENCE_TYPE_SYNC_FD)) {
 			task->prefences[i].syncpoint_index =
 					queue->syncpt_id;
 			task->prefences[i].syncpoint_value =
@@ -1198,7 +1204,7 @@ int nvdla_emulator_submit(struct nvdla_queue *queue, struct nvdla_emu_task *task
 			continue;
 
 		if ((task->postfences[i].type == NVDEV_FENCE_TYPE_SYNCPT) ||
-		    (task->postfences[i].type == NVDEV_FENCE_TYPE_SYNC_FD)) {
+			(task->postfences[i].type == NVDEV_FENCE_TYPE_SYNC_FD)) {
 			task->postfences[i].syncpoint_index =
 					queue->syncpt_id;
 			task->postfences[i].syncpoint_value =
@@ -1238,7 +1244,7 @@ int nvdla_get_signal_fences(struct nvdla_queue *queue, void *in_task)
 			continue;
 
 		if ((task->prefences[i].type == NVDEV_FENCE_TYPE_SYNCPT) ||
-		    (task->prefences[i].type == NVDEV_FENCE_TYPE_SYNC_FD)) {
+			(task->prefences[i].type == NVDEV_FENCE_TYPE_SYNC_FD)) {
 			task->prefences[i].syncpoint_index =
 					queue->syncpt_id;
 			task->prefences[i].syncpoint_value =
@@ -1257,7 +1263,7 @@ int nvdla_get_signal_fences(struct nvdla_queue *queue, void *in_task)
 			continue;
 
 		if ((task->postfences[i].type == NVDEV_FENCE_TYPE_SYNCPT) ||
-		    (task->postfences[i].type == NVDEV_FENCE_TYPE_SYNC_FD)) {
+			(task->postfences[i].type == NVDEV_FENCE_TYPE_SYNC_FD)) {
 			task->postfences[i].syncpoint_index =
 					queue->syncpt_id;
 			task->postfences[i].syncpoint_value =
@@ -1285,7 +1291,9 @@ static int nvdla_queue_submit_op(struct nvdla_queue *queue, void *in_task)
 	struct nvdla_cmd_data cmd_data;
 	uint32_t method_data;
 	uint32_t method_id;
+	uint32_t task_id;
 	int err = 0;
+	int i;
 	u64 timestamp;
 
 	nvdla_dbg_fn(pdev, "");
@@ -1295,6 +1303,8 @@ static int nvdla_queue_submit_op(struct nvdla_queue *queue, void *in_task)
 	/* Get a reference before registration or submission */
 	nvdla_task_get(task);
 
+	task_id = nvdla_compute_task_id(task->task_desc->sequence, task->task_desc->queue_id);
+
 	/* get fence from nvhost for MMIO mode*/
 	if (nvdla_dev->submit_mode == NVDLA_SUBMIT_MODE_MMIO) {
 		task->fence = nvhost_syncpt_incr_max_ext(pdev,
@@ -1365,24 +1375,21 @@ static int nvdla_queue_submit_op(struct nvdla_queue *queue, void *in_task)
 			nvdla_dbg_err(pdev, "task[%p] submit failed", task);
 			/* deletes invalid task from queue, puts refs */
 			nvhost_syncpt_set_min_update(pdev, queue->syncpt_id,
-						     task->fence);
+							 task->fence);
 		}
 	}
 
-	if (!err) {
+	if (IS_ENABLED(CONFIG_TRACING)) {
-		/* If submitted, record task submit and prefences */
+		if (!err) {
-		nvhost_eventlib_log_submit(pdev,
+			/* If submitted, record task submit and prefences */
-					   queue->syncpt_id,
+			trace_job_submit(&pdev->dev, pdata->class, task_id, task->num_prefences, timestamp);
-					   task->fence,
-					   timestamp);
 
-		nvhost_eventlib_log_fences(pdev,
+			/* Record task prefences */
-					   queue->syncpt_id,
+			for (i = 0; i < task->num_prefences; i++) {
-					   task->fence,
+				trace_job_prefence(task_id, task->prefences[i].syncpoint_index,
-					   task->prefences,
+						task->prefences[i].syncpoint_value);
-					   task->num_prefences,
+			}
-					   NVDEV_FENCE_KIND_PRE,
+		}
-					   timestamp);
 	}
 
 	mutex_unlock(&queue->list_lock);

include/trace/events/nvdla_ftrace.h

@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2023, NVIDIA Corporation.  All rights reserved.
+ *
+ * NVDLA event logging to ftrace
+ */
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM nvdla_ftrace
+
+#if !defined(_TRACE_NVDLA_FTRACE_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_NVDLA_FTRACE_H
+
+#include <linux/tracepoint.h>
+#include <linux/device.h>
+
+TRACE_EVENT(job_submit,
+	TP_PROTO(struct device *dev, u32 class_id, u32 job_id, u32 num_fences, u64 hw_timestamp),
+	TP_ARGS(dev, class_id, job_id, num_fences, hw_timestamp),
+	TP_STRUCT__entry(
+		__field(struct device *, dev)
+		__field(u32, class_id)
+		__field(u32, job_id)
+		__field(u32, num_fences)
+		__field(u64, hw_timestamp)
+	),
+	TP_fast_assign(
+		__entry->dev = dev;
+		__entry->class_id = class_id;
+		__entry->job_id = job_id;
+		__entry->num_fences = num_fences;
+		__entry->hw_timestamp = hw_timestamp;
+	),
+	TP_printk("%s class=%02x id=%u fences=%u ts=%llu",
+		dev_name(__entry->dev), __entry->class_id, __entry->job_id,
+		__entry->num_fences, __entry->hw_timestamp
+	)
+);
+
+DECLARE_EVENT_CLASS(job_fence,
+	TP_PROTO(u32 job_id, u32 syncpt_id, u32 threshold),
+	TP_ARGS(job_id, syncpt_id, threshold),
+	TP_STRUCT__entry(
+		__field(u32, job_id)
+		__field(u32, syncpt_id)
+		__field(u32, threshold)
+	),
+	TP_fast_assign(
+		__entry->job_id = job_id;
+		__entry->syncpt_id = syncpt_id;
+		__entry->threshold = threshold;
+	),
+	TP_printk("job_id=%u syncpt_id=%u threshold=%u",
+		__entry->job_id, __entry->syncpt_id, __entry->threshold
+	)
+);
+
+DEFINE_EVENT(job_fence, job_prefence,
+	TP_PROTO(u32 job_id, u32 syncpt_id, u32 threshold),
+	TP_ARGS(job_id, syncpt_id, threshold));
+
+DEFINE_EVENT(job_fence, job_postfence,
+	TP_PROTO(u32 job_id, u32 syncpt_id, u32 threshold),
+	TP_ARGS(job_id, syncpt_id, threshold));
+
+TRACE_EVENT(job_timestamps,
+	TP_PROTO(u32 job_id, u64 begin, u64 end),
+	TP_ARGS(job_id, begin, end),
+	TP_STRUCT__entry(
+		__field(u32, job_id)
+		__field(u64, begin)
+		__field(u64, end)
+	),
+	TP_fast_assign(
+		__entry->job_id = job_id;
+		__entry->begin = begin;
+		__entry->end = end;
+	),
+	TP_printk("job_id=%u begin=%llu end=%llu",
+		__entry->job_id, __entry->begin, __entry->end
+	)
+);
+#endif /* End of _TRACE_NVDLA_FTRACE_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>