[PATCH 3/6] trace: qpace: Add tracepoints for QPaCE operations

[Georgi Djakov]

Add ftrace tracepoints for the Qualcomm Page Compression Engine
to allow performance analysis and debugging of QPaCE hardware
operations.

Signed-off-by: Georgi Djakov <georgi.djakov@xxxxxxxxxxxxxxxx>
---
 drivers/soc/qcom/qpace.c     | 12 +++++
 include/trace/events/qpace.h | 99 ++++++++++++++++++++++++++++++++++++
 2 files changed, 111 insertions(+)
 create mode 100644 include/trace/events/qpace.h

diff --git a/drivers/soc/qcom/qpace.c b/drivers/soc/qcom/qpace.c
index 69aa14b7c477..f5b21ffbcbff 100644
--- a/drivers/soc/qcom/qpace.c
+++ b/drivers/soc/qcom/qpace.c
@@ -23,6 +23,9 @@
 
 #include "qpace_internal.h"
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/qpace.h>
+
 #define QPACE_REG_PAGE_SIZE 4096
 #define QPACE_CORE_CACHEINDEX_SIZE 4
 
@@ -310,6 +313,8 @@ int qpace_urgent_compress(dma_addr_t input_addr,
 	if (ret)
 		return ret;
 
+	trace_start_qpace_urgent_compress((u64)input_addr, (u64)output_addr);
+
 	urg_reg_num = get_cpu() % NUM_TRS_ERS_URG_CMD_REGS;
 	stat_reg = qpace_urgent_command_trigger(input_addr, output_addr, urg_reg_num,
 						algo->urg_comp_cntxt);
@@ -338,6 +343,7 @@ int qpace_urgent_compress(dma_addr_t input_addr,
 
 	ret = FIELD_GET(URG_CMD_0_ED_STAT_SIZE, stat_reg);
 out:
+	trace_end_qpace_urgent_compress((u64)input_addr, (u64)output_addr, ret);
 	return ret;
 }
 EXPORT_SYMBOL_GPL(qpace_urgent_compress);
@@ -356,6 +362,9 @@ int qpace_urgent_decompress(dma_addr_t input_addr,
 	if (ret)
 		goto out;
 
+	trace_start_qpace_urgent_decompress((u64)input_addr,
+					    (u64)output_addr, input_size);
+
 	urg_reg_num = get_cpu() % NUM_TRS_ERS_URG_CMD_REGS;
 	qpace_write_urg_cmd_ctx(qpace_priv, QPACE_URG_CMD_0_CFG_CNTXT_SIZE_n_OFFSET,
 				urg_reg_num, algo->urg_decomp_cntxt,
@@ -381,6 +390,9 @@ int qpace_urgent_decompress(dma_addr_t input_addr,
 
 	ret = FIELD_GET(URG_CMD_0_ED_STAT_SIZE, stat_reg);
 out:
+	trace_end_qpace_urgent_decompress((u64)input_addr,
+					  (u64)output_addr,
+					  input_size, ret);
 	return ret;
 }
 EXPORT_SYMBOL_GPL(qpace_urgent_decompress);
diff --git a/include/trace/events/qpace.h b/include/trace/events/qpace.h
new file mode 100644
index 000000000000..3f0ccdb8f206
--- /dev/null
+++ b/include/trace/events/qpace.h
@@ -0,0 +1,99 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
+ */
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM qpace
+
+#if !defined(_TRACE_QPACE_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_QPACE_H
+#include <linux/tracepoint.h>
+
+TRACE_EVENT(start_qpace_urgent_decompress,
+
+	TP_PROTO(u64 src, u64 dst, unsigned int size),
+	TP_ARGS(src, dst, size),
+
+	 TP_STRUCT__entry(
+		 __field(u64, src)
+		 __field(u64, dst)
+		 __field(unsigned int, size)
+	 ),
+
+	 TP_fast_assign(
+		 __entry->src = src;
+		 __entry->dst = dst;
+		 __entry->size = size;
+	 ),
+
+	 TP_printk("src=0x%llx dst=0x%llx size=%u",
+		   __entry->src, __entry->dst, __entry->size)
+);
+
+TRACE_EVENT(end_qpace_urgent_decompress,
+
+	 TP_PROTO(u64 src, u64 dst, unsigned int size, int ret),
+	 TP_ARGS(src, dst, size, ret),
+
+	 TP_STRUCT__entry(
+		 __field(u64, src)
+		 __field(u64, dst)
+		 __field(unsigned int, size)
+		 __field(int, ret)
+	 ),
+
+	 TP_fast_assign(
+		 __entry->src = src;
+		 __entry->dst = dst;
+		 __entry->size = size;
+		 __entry->ret = ret;
+	 ),
+
+	 TP_printk("src=0x%llx dst=0x%llx size=%u ret=%d",
+		   __entry->src, __entry->dst, __entry->size, __entry->ret)
+);
+
+TRACE_EVENT(start_qpace_urgent_compress,
+
+	 TP_PROTO(u64 src, u64 dst),
+	 TP_ARGS(src, dst),
+
+	 TP_STRUCT__entry(
+		 __field(u64, src)
+		 __field(u64, dst)
+	 ),
+
+	 TP_fast_assign(
+		 __entry->src = src;
+		 __entry->dst = dst;
+	 ),
+
+	 TP_printk("src=0x%llx dst=0x%llx",
+		   __entry->src, __entry->dst)
+);
+
+TRACE_EVENT(end_qpace_urgent_compress,
+
+	 TP_PROTO(u64 src, u64 dst, int ret),
+	 TP_ARGS(src, dst, ret),
+
+	 TP_STRUCT__entry(
+		 __field(u64, src)
+		 __field(u64, dst)
+		 __field(int, ret)
+	 ),
+
+	 TP_fast_assign(
+		 __entry->src = src;
+		 __entry->dst = dst;
+		 __entry->ret = ret;
+	 ),
+
+	 TP_printk("src=0x%llx dst=0x%llx ret=%d",
+		   __entry->src, __entry->dst, __entry->ret)
+);
+
+#endif /* _TRACE_QPACE_H */
+
+#include <trace/define_trace.h>